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Tax

BMC One Tax Every Spanish tax deadline, in plain sight

Your tax calendar is built from your profile, the DEHú is checked every hour and every return filed comes with its receipt. Our team prepares, files and responds.

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Illustration: the BMC One menu trimmed to Tax. When you sign in, you see your own data. · With your power of attorney

In short

In BMC One, your tax calendar is built from your profile: which returns apply to you, when they are due and which are filed, with the Tax Agency receipt one click away.

With your power of attorney, the DEHú is checked every hour and the Tax Agency's e-office every day; each notification reaches your adviser with its deadline and analysis.

BMC's team prepares and files each return with a person's approval. BMC One comes with every BMC engagement, and you start with a free first meeting.

Sources: Law 39/2015, art. 43 (BOE) · Order HAP/72/2013 (BOE) · Order HFP/886/2023 (BOE) With an adviser: BMC's Tax practice

Walkthrough

Four screens of your tax year

From the notification to the power of attorney, exactly as you will see them in BMC One.

The full screenOne card, close upThe BMC person in charge

1Notifications

A Tax Agency notice, on time

Your DEHú mailbox is checked every hour. Each notification arrives with its deadline, its risk and the recommended next steps, and it is not opened before it needs to be.

Close up

Official notification (DEHú)Important

Pending notification from the Tax Agency: Request for information

Deadline: 18/10/2026. The team is already preparing the response.

08 Oct 2026, 10:00

Illustration

BMC team

Your adviser receives the alert with the days remaining and the analysis of the document, and decides the next steps. If you receive a notification, a person writes to you with the deadline.

With your power of attorney: the DEHú every hour, and the Tax Agency's e-office every day. The notification is opened before the ten-day period ends and its document is stored with the access receipt.

2My tax position

Six fronts, each with its status

A panel tells you which fronts BMC monitors on your behalf and with what result: your notifications, your taxes, your debt, the DEHú, Social Security and the rules that affect you.

Close up

Single mailbox (DEHú)Active

We receive and analyse your official notifications by electronic means (DEHú mailbox).

We receive your official notifications through the electronic mailbox via BMC Connect.

Illustration

BMC team

Each front is switched on with your power of attorney. If one is missing, you request it with one click and a member of our team activates it; the confirmation arrives in your notification bell.

If you grant us power of attorney in Bizkaia, a seventh front: the Hacienda Foral, with its mailbox monitored twice a day.

3Tax calendar

Your tax calendar: every return, with its date and its receipt

It is built from your tax profile: which returns apply to you, when they fall due and which have been filed, with the PDF one click away. And your due dates, also in your phone's calendar.

Close up

Q1 all filed

Quarterly VAT (M303)Filed on 17 Apr 2026 FiledPDF
Employee withholdings (M111)Filed on 17 Apr 2026 FiledPDF
Corporate tax payment on account (M202)Filed on 17 Apr 2026 FiledPDF
Illustration

BMC team

Your adviser keeps your tax profile up to date. If you hire staff, rent premises or start selling in the EU, your calendar changes with it.

Everything your company has filed since 2020 comes in every night from the Tax Agency's e-office, with its receipt.

4Powers of attorney

Your powers of attorney, and the gaps

You see before which authorities BMC acts for you and what you still need to grant, with the steps to do it at the e-office with your certificate or Cl@ve.

Close up

3 powers of attorney still to be granted

  • General procedures (art. 46.2 LGT)
  • Access to personal tax data
  • Electronic notifications

Grant it to us at the AEAT Sede with your own certificate or Cl@ve. Representative: BMC.

Grant at the AEAT Sede
Illustration

BMC team

Every day we read the Tax Agency's register of powers of attorney. As soon as you grant one, it shows as connected here, without you having to send us anything.

No digital signature? We give you the notarial power of attorney already filled in, you sign it before a notary and we upload it.

What it solves

What happens to you, and what BMC One does

Six concerns that come up every quarter, each one next to the screen that resolves it.

“I only find out about letters from the tax authorities once the deadline is already running.”

The DEHú is checked every hour with your power of attorney. Your adviser receives the deadline and the analysis, and a person writes to you.

In BMC One: Notifications

“The bank is asking me for the corporate income tax filing receipt.”

Every return filed is in your compliance table, with the Tax Agency receipt one click away.

In BMC One: Tax › Tax compliance

“I do not know whether I am up to date with the tax authorities.”

Every week we check whether you have any tax debt. In My tax position you see whether you are up to date according to your latest certificate.

In BMC One: Tax › My tax position

And three more

“I have six months to opt into the Beckham regime.”

Your case file starts with its phases and the list of documents, and your adviser calculates the deadline for Form 149 (Modelo 149).

In BMC One: Documents › Case files

“My digital certificate expires and I find out too late.”

If we hold it in custody, we notify you 30 and 7 days before and on the day it expires, in your language.

In BMC One: Tax › Digital certificate

“A new rule comes out and I do not know whether it affects me.”

You see the BOE updates relevant to your profile and DGT doctrine on your taxes, with BMC's analysis.

In BMC One: Tax › My tax position

A sample year

Your tax year, by month

The due dates of a limited company with employees, from January to December.

NotificationsDEHú every hour, e-office every dayAll year

VAT and withholdings303 and 111, every quarterEvery quarter

Corporate income tax202 in April, October and December; 200 in July202 and 200

Annual summaries390 and 190 in January, 347 in February390, 190 and 347

Jan390 and 190 for the previous year390 and 190Feb347 for transactions with third parties347AprThe income tax return campaign opensIncome tax campaignJul200 for corporate income taxCorporate tax 200Oct303, 111 and 202 for the third quarter303, 111 and 202
Illustration: a sample year for a limited company with employees. The line marks today.

We keep watch for you

Your notifications, your deadlines and tax rules, monitored

With your power of attorney we check the DEHú every hour and the Tax Agency's e-office every day. Every morning we read the BOE and every night, DGT doctrine. Every alert reaches a person at BMC, who decides whether action is needed.DEHú, Tax Agency, BOE and DGT doctrine, every day. Every alert reaches a person at BMC.

Nothing reaches you on its own: every alert goes to the BMC person who manages your account. Notifications can also reach you, if you switch that on.

  1. DEHú Request for information from the Tax Agency, with its deadline Goes to your adviser; to you, if you switch it on
  2. BOE New ministerial order on the VAT returns: headline and impact In My tax position, according to your profile
  3. DGT New binding ruling on the VAT of your business activity In My tax position, with BMC's analysis
  4. DeadlinesBeing fine-tuned The third-quarter 303 falls due in 7 days Goes to your adviser, as a task
Illustration: sample alerts and who receives them. This is not a screen from your portal.

What we monitor, how often and who receives it

DEHú and AEAT notifications

With your power of attorney: the DEHú every hour, and the Tax Agency's e-office every day. Each notification read with its deadline, its risk, its amount and the next steps.

Received by your adviser; by you, if you switch it on

The BOE for your taxes

Every morning, Monday to Saturday: headline and impact of each provision, and full analysis of the most relevant ones. Only the state gazette.

You see it in My tax position, according to your profile

DGT doctrine

Every night, new binding rulings, summarised in plain language with their citations and published only if they pass a double verification.

You see it in My tax position

Deadlines for your obligations

Alerts 90, 30, 7 and 1 day before each due date, and on the day itself.

Being fine-tuned

Received by your adviser, as a task

Debts, certificate and renewals

Your tax debts, every week; the expiry of your certificate in custody, at 30 and 7 days; and the campaign for each annual renewal, such as Form 151.

Received by your adviser; the certificate alert, by you as well

TEAC and court judgments

The criteria of the TEAC and the TEARs, judgments of the Constitutional and Supreme Courts and consolidated legislation, in our team's search tool.

Consulted by your adviser; it does not generate alerts

Reaches you

Every DEHú and AEAT notification, analysed and with its PDF, if you switch it on; the expiry alert for your certificate; and, in My tax position, the BOE for your profile and DGT doctrine.

Received by our team

Notifications, new debts, each campaign's renewals and the deadlines for your obligations, as tasks.

Team only

The TEAC, court judgments and consolidated legislation, in the search tool used by our team and its agents. They do not generate any alerts.

Investors and non-residents

Overseas assets, crypto, non-residents and the Beckham regime

Your calendar picks up Forms 100, 210 and 720 from your tax profile. Forms 720, 721, 100 and 210 have two service levels: With an adviser, which you can already engage, and Platform, in preparation; ask about it at your first meeting.Your calendar picks up Forms 100, 210 and 720 from your tax profile. Two service levels: With an adviser, already available, and Platform, in preparation.

Form 720

Assets and rights held abroad

It enters your calendar when your profile calls for it. BMC checks it and files it on your behalf, and the receipt stays in your case file.It enters your calendar if your profile calls for it. BMC checks it and files it on your behalf.

It is filed from 1 January to 31 March. Taxpayers under the Beckham regime do not file the 720 (DGT V0092-14).From 1 January to 31 March. Not filed under the Beckham regime (DGT V0092-14).

Form 720

Form 721

Crypto assets held abroad

BMC checks it and files it on your behalf, and the receipt stays in your case file.BMC checks it and files it on your behalf.

It is filed from 1 January to 31 March (Order HFP/886/2023, art. 4).From 1 January to 31 March (Order HFP/886/2023, art. 4).

Form 721

And also

Form 210

Non-resident income

Our platform prepares the Form 210 file in the AEAT's official format; our team checks it and files it.

Your calendar picks it up from your profile; the quarterly 210 and other income are handled by your adviser.

Form 210

Beckham regime

Form 149 and the renewal of Form 151

The 151 is renewed every year. When the campaign opens, we notify you in My tax position and in your calendar, including the one you subscribe to in Google, iCloud or Outlook.

Forms 149 and 151 are filed by our team at the Tax Agency's e-office.

The full regime, further down

From anywhere

Online from any country, with offices of our own

  • The first meeting, by Google Meet
  • Signing with BMC Sign
  • You identify yourself once only
  • Your NIE, by power of attorney

If you are coming from abroad:

See how it works from anywhere 

Everything it does

Everything BMC One does in Tax

149 capabilities in six areas, each on one line: who carries it out and what it depends on.

Depending on your engagementdepends on what you authorise or engagedepending on what you authorisePartialpart of it works, the line says whichBeing fine-tunedbuilt, we are adjusting it

Official notifications24 capabilities The DEHú every hour and the Tax Agency's e-office every day, with the deadline and analysis of each notification. See all 24Close

In your portal

  • Your last ten official DEHú notifications, with authority, arrival, deadline and an “Important” or “Critical” badge.
  • On Home, the “Official deadline until…” alert when a notification has 15 days or fewer left.
  • The bell and the Notifications screen: your last 50 alerts, with their severity, their date and a link to the screen they come from.
  • Your Tax Agency e-office notifications by web service, with issuer, date and status.Being fine-tuned

Automatic

  • Your DEHú mailbox, checked every hour without marking anything as read. With your power of attorney.
  • The ten calendar-day access period, calculated, and the date on which it will be opened.
  • Opening before the ten-day period ends, with the document and the access receipt stored.
  • Each opened notification, read on our servers: type of act, risk, amount, response deadline and the recommended next steps.
  • Each notification, filed in your tax file with its document and its deadline.
  • The notification stays in your record even if it arrives in BMC's mailbox, never in another client's.
  • An email to your adviser with the days remaining, and another once it has been read and analysed.
  • An email summary of your new notifications from the tax authorities: what each one means, the key date, the amount, what to do and the PDFs. If you do not switch it on, your adviser receives it.
  • If the DEHú channel stops responding or the analysis fails, the team knows straight away.
  • The Tax Agency's e-office, every day: the notifications from the last 35 days for every company we represent, without opening any.
  • Queued indexing and download, with retries, of the notifications of each company that has granted us power of attorney; its scheduled start is in preparation.Partial

Our team

  • For each holder: what is monitored, which adviser receives the alert, from what risk level and whether we also notify you.
  • Recording a notification opened at the e-office or received in another mailbox, with its actual date and the deadline recalculated.
  • Inboxes by company, authority, risk and deadline, with the debt and the risk map, to mark each notification as read or resolved.
  • From the alert, requesting that it be opened now or at the end of the period; the email buttons are in preparation.Partial
  • Re-reading older notifications with the current analysis and opening their case file, manually.Partial
  • Retrieving years of older notifications from the e-office, month by month, manually.Partial
  • Downloading, company by company, the documents the mailbox does not provide, analysing and storing them; not yet scheduled.Partial
  • Opening a specific e-office notification by robot, in two steps and only on express instruction.Partial
  • The DEHú mailbox pending list in Operations.Being fine-tuned
E-offices and monitoring16 capabilities Your tax debt, your certificates, Tráfico, the CIRBE and the Hacienda Foral de Bizkaia, monitored on your behalf. See all 16Close

In your portal

  • The monitoring panel: which fronts BMC monitors for you and with what result, from the Tax Agency and the DEHú to Social Security and new rules.
  • If a front is switched off, you ask us with one click to activate it and receive the confirmation in the bell.
  • Whether you have outstanding tax debts and for how much, or whether you are up to date according to the latest certificate.

Automatic

  • Every week, your tax debts; if a new one appears or one increases, your adviser receives the alert. With your power of attorney.
  • Mi DGT with your certificate: vehicles, ITV, fines with their case file, licence and points, every day if you have a fleet or open fines and every week if not.
  • Your adviser receives an alert for a new fine, an enforcement procedure, a request to identify the driver, or an ITV, insurance policy or licence about to expire.
  • Your Bank of Spain CIRBE report every month, compared with the previous one: your adviser knows if a new exposure, a default or a change in amount appears. If you authorise it.
  • Your Hacienda Foral de Bizkaia mailbox, twice a day, with an alert for every pending notification and, when three days or fewer remain, every day.
  • Every month, your certificate of being up to date with tax obligations, with an alert if it comes out negative; the automated procedure is still being adjusted.Partial
  • Once you have signed the engagement letter, a reading of your e-offices with your certificate: regimes, debts, notifications and gaps, with the missing powers of attorney prepared in draft. That tax snapshot is not yet visible in your portal.Partial
  • The Tráfico sweep without your certificate's key touching the disk; being rolled out.Partial

Our team

  • Each client's Tráfico record: vehicles and fines reconciled with their accounts, and the appeal case for a fine opened from there.
  • The same by API and through our agents' tools: summary, vehicles, fines and driver.
  • Requesting tax certificates from your record: good standing, census status, balances and imputations; being adjusted with the Tax Agency.Partial
  • The good-standing certificate, the census status certificate and your register of activities and premises, by robot and manually.Partial
  • Opening a Bizkaia provincial notification as representatives and storing the PDF and the receipt, manually and with confirmation.Partial
Calendar and compliance32 capabilities Your tax calendar is built from your profile, with no false alarms, and every return filed comes with its receipt. See all 32Close

In your portal

  • Your next three obligations, with their date and whether BMC is handling them, and the annual campaigns opening soon.
  • The year's tax calendar by quarter: each return filed, pending or overdue, with its receipt.
  • The history of your returns, with the PDF receipt without leaving the portal.
  • The compliance table: filed, filed late, pending or upcoming, per company or for all of them at once, with the points to discuss with your adviser.
  • Your compliance grade from A to F, with what is pending, what is done, the risk areas and the critical items, area by area.Depending on your engagement
  • Your calendar by month, week and day, with appointments, renewals, tax due dates and notifications, and the next 60 days.
  • A link to subscribe to your calendar in Google, iCloud or Outlook, always up to date, which can be revoked.
  • Your upcoming renewal campaigns, such as the annual 151, in My tax position and in your calendar.
  • Your tax position rebuilt from what you filed: net income, revenue, expenses and payments on account; its periodic update is in preparation.Partial
  • The year's table with each obligation by month and its status; not yet with its own menu entry.Partial
  • “Your calendar”: key dates by month with who acts, and a radar of BOE items for your sector and grants in your region; not yet linked from the menu.Partial

Our team

  • Your tax profile: legal form, regimes, filing frequency, territory, employees, rentals and EU transactions.
  • Your company's matrix, return by period, with its tax position from the journal and export to CSV or Excel.
  • The table for the whole portfolio: filed, filed late, missing, upcoming and checks by severity.
  • The Tax home page: what is overdue, what is upcoming, the powers of attorney about to expire and outstanding debt, by tax and quarter.
  • The firm-wide tax calendar for the year, month by month, with what falls due within 30 days.
  • The firm's deadline radar: renewals, obligations, notifications, hearings, appointments and tasks, with overdue items in red.
  • The calendar link generated for you, and the revocation of any link.
  • Your compliance grade and your obligations across all areas, with risk areas, recommendations and six months of calendar.
  • When your profile is saved, the obligations that apply to you are recalculated without deleting the history.
  • The monitor for all accounts, with the status of their returns for the year.
  • The annual renewal of a return, such as the 151, scheduled when it is filed.
  • The list of the year's obligations with the days remaining and overdue or urgent flags, by API; today, with the returns on record.Partial
  • Your company's compliance record, with its grade, its areas, NIS2 and VeriFactu.Being fine-tuned

Automatic

  • Your tax calendar is built from your profile, in the common tax territory, the Canary Islands, Ceuta and Melilla, the Basque Country and Navarre; in the common territory, more than 20 returns with their deadlines.
  • No false alarms: the 349 only if there were EU transactions, the 347 by threshold and nothing before your first filing. And cross-checks with your books, such as payroll without a 111 or rent without a 115.
  • A catalogue of 75 business obligations (tax, employment, corporate, data, environmental and sector-specific), each with its criticality.
  • Every night, from the e-office, what your company has filed since 2020 across 15 returns, with its receipt. With your power of attorney.
  • On the day the campaign opens, an email to file the return again, or an alert to your adviser to write to you.
  • Alerts 90, 30, 7 and 1 day before each due date, and afterwards, in your bell and in your adviser's email; the next period for recurring obligations is being adjusted.Partial
  • The monthly recalculation of every client's obligations, in case something has changed; not yet scheduled.Partial
  • Recalculating your obligations when you are registered as a client or when your engagement ends.Being fine-tuned
Returns and filing21 capabilities From the books to the official file for the most common returns, cross-checked against your accounts and filed with a person's approval. See all 21Close

Our team

  • The box-by-box editor for the 303, 130, 111, 115 and 200: data from your profile, a draft that saves itself and validation with the Tax Agency.
  • The 303, 111, 115 and 130 with the official file to the byte, accepted in the Tax Agency's test environment.
  • The VAT One-Stop Shop, tax consolidation, IGIC and other returns filed elsewhere, recorded with their CSV (secure verification code) and receipt.
  • Recording a filing made at the e-office or in Renta WEB: CSV, NRC, receipt, amount and notes.
  • The firm-wide filing queue by due date, to prepare filings and mark them in bulk.
  • Views by tax (VAT, IRPF, corporate tax, withholdings and information returns), with the provisional 303 for the period and its export.
  • Your company's tax record: each return with its status and, from there, deferrals, certificates, compliance and notifications.
  • Full Intrastat: the monthly declaration, the check that you registered us as third-party declarant and four-eyes approval before filing, never twice.
  • The quarterly or monthly VAT close, with the 303 and the 390 from your invoices; the 349 and IGIC still at zero.Partial
  • Filing the 131, 200, 202, 390, 180, 190 and 347 with our own generator, until the official layout for each arrives.Partial
  • Filing another 24 returns by API with our own generator, not yet checked against the official layout, with the same safeguards.Partial
  • Filing with the Tax Agency from the record: data from your books, file, cross-check with the accounts, validation and filing, with the CSV, receipt and file hash stored; live filing still being adjusted.Partial
  • The team's command-line tool: certificates, 303, validation, lookup of filed returns and NRC; still outside the platform.Partial
  • The NRC to pay a self-assessment and the tax anagram code your bank asks for; today, manually.Partial
  • The application to defer or pay a debt in instalments, and its tracking; submission to the Tax Agency is in preparation.Partial
  • Filing from each return's editor.Being fine-tuned

Automatic

  • A catalogue of 52 Tax Agency returns, with their channel, frequency, deadline and who they apply to.
  • No live filing without express confirmation, prior validation, a closed period, a cross-check with the books and a person's approval; prior validation is available only by API today.Partial
  • Before filing, the return is cross-checked against your journal: complete books, figures that reconcile and consistent totals; the report has no screen yet.Partial

By API and from your assistant

  • Your returns and receipts, for your own programs or your assistant. Filing, never: our team does it, with a person's approval.
  • Notifications to your systems when a return is prepared or filed; today, from the bulk queue and the editor.Partial
Powers of attorney and certificate34 capabilities Your powers of attorney to BMC before each authority, and your certificate in custody with every use logged. See all 34Close

In your portal

  • My powers of attorney: before which authorities BMC acts, their status and validity, what is missing and the link to the e-office to grant it.
  • Asking us with one click to connect or withdraw your representation before the Tax Agency, Social Security, the DEHú or the REA.
  • “Power of attorney confirmed” in the activity on your Home screen, with the authority.
  • In My tax position, your powers of attorney with the Tax Agency and the procedures still missing.
  • Your digital certificate: the authorisations with their PDF, the certificates we hold with their expiry dates and the usage log in CSV.
  • Withdrawing the authorisation: we destroy your certificate and its password and send you the proof with the date, hash and evidence key.
  • Before we store your certificate, you sign which procedures you authorise and in which mode, with the legal information and the right of withdrawal if you are a consumer.
  • When you register, you prove your identity with your certificate: we read the NIF, issuer and expiry date and check that it has not been revoked, without storing it.

Our team

  • The panel of every client's powers of attorney, by status and procedure, with the detail of each.
  • An email with the exact steps to grant us power of attorney at the Tax Agency or Social Security e-office, and the request tracked until it is on record.
  • If you choose to grant it yourself, the request is prepared, without repeating it if it already exists or if the power is already on record.
  • When you tell us you have granted it, we check it with the Tax Agency at that moment; if it does not appear, a person follows it up.
  • Without a digital signature, the notarial power of attorney: we give it to you filled in, you sign it before a notary and we upload it.
  • Powers of attorney about to expire, flagged in advance, so that the extension is requested in time.
  • Each client's coverage table: Tax Agency, REA, Hacienda Foral de Bizkaia, Tráfico and the gaps.
  • Encrypted custody of your certificate on a machine with no access from the internet: neither the database nor the key, on their own, can recover it.
  • Certificates expiring soon, in the inbox and on the team's health panel.
  • Confirming, extending or renouncing powers of attorney in bulk from the panel; execution at the e-office is still manual.Partial
  • With your certificate, registering the general power of attorney to BMC with the Tax Agency without you entering the e-office; today, launched manually.Partial
  • Accepting the notifications power of attorney of a specific client, manually.Partial
  • Checking, acting as your representative, your files, returns and notifications at the e-office, manually.Partial
  • With your single-use certificate, the power of attorney to BMC in the REA before the whole central government administration, and its acceptance, manually.Partial
  • The power of attorney for all Social Security procedures in its register, the RASS; today, with a manual click.Partial
  • Accepting at the Bizkaia provincial e-office the power of attorney you grant us, with our articles of association, manually.Partial
  • Refreshing your powers of attorney from the record by web service.Being fine-tuned

Automatic

  • Every day, the Tax Agency's register of powers of attorney: which powers you have given us, their status and until when, without you sending us anything.
  • Twice every working day, the Hacienda Foral de Bizkaia register of powers of attorney, which is not in the REA or the DEHú.
  • Before filing, the system checks that BMC holds a valid power of attorney for that procedure, or your certificate is used, as agreed.
  • When your certificate is stored, we confirm by email its issuer, name, serial number, fingerprint and expiry date.
  • Your certificate is used only for what you signed for, and each use is logged before it leaves custody; if it cannot be logged, it does not leave.
  • The expiry alert for your certificate 30 and 7 days before and on the day it expires, in your language.
  • Lookup processes use your decrypted certificate only in memory, for the duration of each task.
  • If a process is interrupted midway, every half hour any key remnant in the server's temporary memory is destroyed.
  • Single-use mode: your certificate exists only during the registration and is then destroyed automatically; the closure at the end of the registration is in preparation.Partial
Regimes, investors and doctrine22 capabilities The inpatriate regime, Forms 720, 721 and 100, and the DGT doctrine and BOE items that concern your taxes. See all 22Close

In your portal

  • In My tax position, the BOE updates for your profile and DGT doctrine on your taxes, with BMC's analysis.

Our team

  • Registering your relocated employee under the inpatriate regime, with the requirements checked and the Form 149 deadline.
  • Inpatriate regime and Form 151 case files that start with their phases, their tasks and the list of documents to request from you.
  • Forms 720, 721 and 100 for investors and non-residents: our team files them at the Tax Agency's e-office or in Renta WEB, and the receipt stays in your case file.
  • The list and record of each employee under the regime, with their status and the 149 deadline; the tax estimate still uses fixed figures.Partial
  • The regime's communications (149, 151 and 296) with their legal deadline; today, based on what is entered manually.Partial
  • The regime flag in your tax profile; the calendar and renewals do not read it yet.Partial
  • The 149 with the official file, filed by API with a person's approval; no button yet.Partial
  • The annual 151 with its official file, and the following year's built from the previous one; no button yet.Partial
  • The BOE analysis articles, in files for a person to audit.Partial
  • The corrections from that audit, back onto the website, manually.Partial
  • Communicating the 149 opt-in or waiver from the employee's record.Being fine-tuned

Automatic

  • Every night, the DGT's new binding rulings, summarised in plain language with their citations and published only if they pass a double verification.
  • The full text of every DGT ruling since 2014, and the analysis of those relevant to BMC's practice.
  • An alert to the team if no new doctrine comes in within 40 days or if a full text is missing.

By API and from your assistant

  • DGT rulings for your assistant or your own programs: search, read each one in full and know up to what date they go. If we grant it to you.
  • Concept search across the DGT, the BOE and what BMC holds about your company, with the source cited, and the full source by its citation; consolidated legislation, the TEAC and court judgments, for our team only.

On the BMC website

  • Simulators for the Beckham Law, Form 149, Form 151 and the Bizkaia relocated-workers regime, in four languages; the Beckham Law ones email you the result.
  • The binding rulings observatory in four languages: the criterion, how it affects you, the full text and search by tax, topic or number.
  • On each published ruling, a BMC technical note with its PDF.
  • How the DGT's criterion has changed on each topic, with the milestones and the rulings that prove it.
  • When a ruling makes the news, an analysis article translated into English, French and German.

Your assistant, connected

Ask your assistant about your deadlines and your returns

Your compliance table, your receipts, your tax position and DGT doctrine can be consulted from the assistant you already use, through MCP or the API. Always with its own scoped access, never with your session.Your deadlines, your receipts and DGT doctrine, from the assistant you already use, with its own scoped access.

It works with any assistant that supports remote MCP connectors with OAuth sign-in. For example, Claude, which we have tested it with, or ChatGPT Business, Enterprise and Edu, as documented; with a token, also Gemini CLI.

No assistant files with the Tax Agency, moves money or signs for you.

Your assistantBMC One · Nórdica Muestra, S.L.

  1. Which returns do we have this quarter and which have already been filed?
  2. compliance_matrixRead · Analyst
  3. You have the third-quarter 303 and 111 and the 202 payment on account. They fall due on 20 October and your BMC team is preparing them. April and July are recorded as filed.The 303, 111 and 202 fall due on 20 October and your BMC team is preparing them. April and July, filed.
  4. What does the DGT say about deducting VAT on a company car?
  5. dgt_search · dgt_getRead · Analyst
  6. There are several binding rulings on VAT on vehicles. I will show you each one with its number, its date and whether BMC has verified it, and the most recent one in full.There are several binding rulings. I will show you each one with its number, its date and whether BMC has verified it.
  7. Change the tax address on the record to Calle Muestra 5, Madrid.
  8. fiscal_profile_updateWrite · Operator
  9. Changed on your BMC One record. Nothing changes with the Tax Agency as a result: if it needs to be notified, your adviser will tell you.
Illustration with fictitious data. Each answer comes from the tool shown, with the permission it requires.

What each access opens

Obligations and compliance
Read · Analyst
AEAT receipts
Read · Analyst
Tax position
Read · Analyst
Tax record
Read · AnalystWrite · Operator
DGT doctrine
Read · Analyst

Analyst: read only. Operator: read and ordinary write. Custom: permission by permission; critical actions open only with it.

Always in the hands of a person

  • Filing with the Tax Agency: no client access can do it, and every filing carries the approval of a person on our team.
  • Notifications and the DEHú are handled by your adviser; your assistant does not open them.
  • The tax position is an estimate from your accounts, not a return.

How it connects, in 3 steps

  1. Developers, in your portal Opened by the account owner or an administrator, with API access switched on by BMC.
  2. Authorise the access Choose the role, company and expiry, and whether it can see personal data. AnalystOperatorCustom
  3. Add the MCP connector in your assistant At the address https://app.bm.consulting/mcp

No assistant files with the Tax Agency, moves money or signs for you.

It works with any assistant that supports remote MCP connectors with OAuth sign-in. For example, Claude, which we have tested it with, or ChatGPT Business, Enterprise and Edu, as documented; with a token, also Gemini CLI.

If you do not authorise personal data, it reaches the assistant masked: NIF, IBAN, phone, date of birth and address. Each connection can be switched off or revoked from Credentials. With a token, your own systems can connect too, by API.

Connect your AIAPI and MCP

Who it connects with

Connected to every authority you answer to

The Tax Agency, the DEHú, the Hacienda Foral, Tráfico, the Bank of Spain and the sources of doctrine.

Tax AgencyE-office, returns and powersDEHúNotificationsHacienda Foral de BizkaiaMailbox and powersSocial SecurityPower of attorney and monitoringREACentral government powers, partialTráficoFines and pointsBank of SpainMonthly CIRBEBOEUpdates for your profileDirección General de TributosBinding rulingsCertification authoritiesYour certificate

Questions about your Spanish tax deadlines

What does my Spanish tax calendar look like in BMC One?

Your tax calendar is built from your profile: which returns apply to you, when they are due and which are filed, with the Tax Agency receipt one click away. A self-employed client sees Form 303 (quarterly VAT return) and Form 130 (income tax payment on account); a company with staff, the 303, 111, 202 and 200. Our team prepares and files each return, with a person's approval.

If you prefer an adviser to handle everything, see tax compliance in Spain with BMC.

Can I file my returns myself from BMC One?

No. Our team prepares and files them, with a person's approval; you see the status of each one and download its receipt. You do not need to hand over your digital certificate: granting us power of attorney at the Tax Agency's e-office with your certificate or Cl@ve is enough. With that power, the returns your company has filed since 2020 come in every night, with their receipts.

What happens when a DEHú notification arrives?

With your power of attorney, the DEHú (the Spanish administration's single electronic notifications mailbox) is checked every hour. Your adviser receives the deadline and the analysis, decides the next steps, and a person on our team writes to you. An unopened electronic notification is deemed rejected after ten calendar days; we open it before the ten-day period ends. If it reaches you on paper, upload it to Documents.

Sources: Law 39/2015, art. 43.2 (BOE)

When is corporate income tax due in Spain?

Payments on account (Form 202), where they apply, fall in the first 20 calendar days of April, October and December. The annual return (Form 200) is due within the 25 calendar days after the six months following the end of the financial year: in July if your year matches the calendar year. Both appear in your BMC One tax calendar with their receipts.

Sources: Law 27/2014, art. 40.1 (BOE) · Law 27/2014, art. 124.1 (BOE)

How do I apply for the Beckham regime (Form 149)?

You notify the Tax Agency on Form 149 (Modelo 149) within six months of the start date of your activity shown in your Spanish Social Security registration. In BMC One, your case file opens with its phases and the list of documents, your adviser calculates the deadline, and our team files the 149 at the Tax Agency's e-office.

Sources: Royal Decree 439/2007, art. 116.1.a (BOE)

To study your case before applying, see the Beckham regime with an adviser.

How do I submit my crypto assets held abroad (Form 721) to the Spanish tax authorities?

Form 721 (Modelo 721), and Form 720 (Modelo 720) for other assets held abroad, are filed between 1 January and 31 March. BMC checks them and files them on your behalf, and the receipt stays in your case file. Taxpayers under the Beckham regime do not file the 720.

Sources: Order HFP/886/2023, art. 4 (BOE) · Order HAP/72/2013, art. 7 (BOE) · DGT V0092-14

Who files the non-resident income tax return (Form 210)?

Our platform prepares the Form 210 file in the AEAT's official format; our team checks it and files it. Your tax calendar picks up the 210 from your tax profile, and your adviser handles the quarterly 210 and other income. If you also hold assets abroad, Form 720 enters your calendar when your profile requires it.

If you do not live in Spain, see also our fiscal representation for non-residents service.

Does artificial intelligence decide anything about my taxes?

No. We use it to read and classify each notification on our own servers, without sending it to external AI providers. The person who decides, approves and files is a member of our team, and no assistant connected to BMC One can file with the Tax Agency.

BMC

Start with a free first meeting

You tell us about your situation with the tax authorities and we tell you, in writing, what we would do, who would handle it and what it costs. If it is a fit, you sign the engagement letter with BMC Sign and, once you have signed it, we give you access to BMC One.

You can also meet us at our offices.

Getting started is easy

  1. A free first meeting to assess your case.
  2. A written proposal with the price and the first-year total: your engagement letter.
  3. Once you sign the engagement letter, we give you access to BMC One.

Self-employed from €120 + VAT a month

Limited companies from €390 + VAT a month

Free assessment and quote

Free first meeting, no commitment

Already a client: sign in

First meeting free. BMC One comes with every BMC engagement, at no separate fee.

Free assessment and quote