Corporate transactions, capital markets and strategic deals.
Independent assessment and rigorous valuation of assets and businesses.
Business reinvention, sustainability and wealth management.
Corporate governance, succession and transformation
International tax planning and cross-border structuring.
Regulatory compliance and tax reporting obligations.
Special regimes for individuals and digital assets.
Tax defense and wealth taxes
Corporate immigration, ICT transfers, investor residency, digital nomad and regularisation.
Employment relations, mobility and regulatory protection.
Protection, compliance and digital resilience
Data protection, DPO and AI regulation
Company formation, contracts, shareholder agreements and corporate operations.
Contracts, dismissals, redundancies and labour court representation.
Insolvency proceedings, fresh start, micro-enterprise procedure and dissolution.
Litigation, arbitration, mediation, IP and real estate law.
Accounting, reporting and outsourced financial management.
Entity management, governance and personnel administration.
Incorporation, incentives and business acceleration.
Risk management, continuity and recovery
New guides on the latest Spanish tax and immigration developments.
Practical tools for informed decision-making.
Everything BMC One does
Each capability links to its area. Partial: part of it works; the detail is on the area page.
Try
Business Services
Tax
Legal
Security
Nothing for “”. Try “VAT”, “payroll”, or “signature”.
By area
Business ServicesOperations
Your business, up to date in one place
Our team books, calculates and submits.
Ask your assistantExamples
How many active employees do we have, and under which collective agreement and type of contract?
Add these three employees with their DNI, Social Security number and start dateThey stay in BMC One; nothing is notified to Social Security.
Tax
Every Spanish tax deadline, in plain sight
Our team prepares, files and responds.
Ask your assistantExamples
Which returns do we have this quarter and which have already been filed?
Change the tax address on the record to Calle Muestra 5, MadridIt changes the record in BMC One; nothing changes with the AEAT.
Legal
Every phase, with its status and its date
BMC lawyers handle every matter; in BMC One you see its phases and the status of each one.
Ask your assistantExamples
Which documents are still awaiting signature and who has yet to sign?
Prepare an envelope for Lucía Prueba to sign this contract on the last pageIt stays in draft. Sending it is a critical action: only with the Custom role.
Strategy
The whole transaction in one file
The analysis and the recommendation are signed by the people on the team.
Ask your assistantExamples
Find what BMC has written to us about the capital increase
Where do the tax obligations of every company in the group stand, and which one has gaps?With a group access.
Across all areas
ConnectionsAPI, MCP and webhooks
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, Cursor, n8n, Make or Zapier; and, by API and signed webhooks, your own systems.
No assistant files with the AEAT, moves money or signs for you.
Only with the Custom role, chosen permission by permission.
API and MCPConnect your AIIntegrationsPublic administrations
Security
Its own scoped access, never your session
BMC One, its database and your documents are on our own dedicated servers in Europe. The database is not exposed to the internet.
No assistant files with the AEAT, moves money or signs for you.
Illustration of what you choose when you authorise an access. Fictitious data.
Returns
ReturnsForms 720, 721 and 210
Returns for investors and non-residents
Assets held abroad, crypto assets and non-resident income, at two levels: Platform and With an adviser.
BMC's client environment, included in your engagement: never sold separately.
Legal
A BMC lawyer handles every matter, and in BMC One you see every phase with its date. You sign from your email, with a seal that anyone can verify.A BMC lawyer handles every matter. You see every phase with its date and sign from your email.
Book a free meeting Sign in to BMC One
First meeting free. BMC One comes with every BMC engagement, at no separate fee.
In BMC One Legal, every matter has its case file with its phases, status and dates, and a BMC lawyer handles it.
Commercial contracts, confidentiality agreements and authorisations are signed from your email with BMC Sign: each document carries BMC's advanced electronic seal, a qualified timestamp and a QR code that anyone can check.
Every day we check the BORME, insolvency filings for your customers and suppliers, your court deadlines and sanctions lists; BMC One comes with your engagement, and you start with a free first meeting.
Sources: Law 10/2010 on the prevention of money laundering (BOE) With an adviser: BMC's Legal practice
Walkthrough
From the case file to your identification, exactly as you will see them in BMC One.
The full screenOne card, close upThe BMC person in charge
1Case files
Every matter has its case file, with its phases, its due date and its opening and closing dates. You see it the same way while it is open as after it ends.
Close up
Case phases
BMC team
Your lawyer opens the case file with the phases and dates for that type of work, and closes them one by one. If you have a question, you write it from the case file itself.
Our team updates the phases and their dates. The deed and its registration still go through a notary and the Commercial Registry.
2Signatures
Each signer receives a link and signs with a code sent by email or SMS, by hand or with their own certificate, in their language. The signed document carries the BMC seal, a timestamp and a QR code on every page.Each signer signs from a link, with a code, by hand or with their certificate. The document carries the BMC seal and a QR code.
Close up
Recipients
Contract with Estudio Alba Demo, S.L.
InvitedOpenedSigned
InvitedOpenedSigned
BMC team
A member of our team prepares your engagement letter and BMC's documents, places the fields and sends them. Once you sign the letter, we give you access to BMC One.
Sending your own documents depends on your engagement: BMC Sign is switched on per account, with your templates, your sender name and a monthly envelope limit. Before signing, every signer goes through sanctions-list screening.
3Certified communications
From BMC One you send certified notices, formal demands or claims. A record sealed by BMC proves the content, the date and the recipient.
Close up
Sent
BMC team
Our team can also send it for you, with the same sealed record of sending.
It proves the sending, not receipt or reading, and it is not a postal burofax. Depending on your engagement: with BMC Sign on your account and its monthly limit.
4Verification
The law requires every client to be identified. You upload your document and your beneficial ownership declaration from the portal, and the compliance team checks it.You upload your document and your beneficial ownership declaration from the portal, and the compliance team checks it.
Close up
BMC team
The compliance team checks every document. Your company and its beneficial owners are screened against sanctions lists, again every day, and we notify you in your client area before your verification expires.The compliance team checks every document. Sanctions lists are checked again every day.
No facial recognition and no automated reading of the document: a person looks at it. The signed declaration is kept for 10 years (art. 25.1 of Law 10/2010).
What it solves
Six common concerns, each one next to the screen or the person that resolves it.
“Our partners are in three countries and every signature means a week of couriers.”
Each signer receives the document by email and signs from their phone, with a code, by hand or with their certificate, in their language.Each signer receives the document by email and signs from their phone, with a code, by hand or with their certificate.
In BMC One: Documents › Signatures
“I have gone weeks without knowing where my matter stands.”
Your case file shows every phase with its status and due date, and you write to your team from it.
In BMC One: Documents › Case files
“I need to be able to prove that I sent the formal demand.”
A record sealed by BMC proves the content, the date and the recipient of your certified communication.
In BMC One: Documents › Signatures
And three more
“I worry that a court deadline will slip by.”
Your lawyer calculates each deadline according to the branch of jurisdiction, allowing for August and public holidays, and receives alerts 7, 3 and 1 day before and on the day it falls due.
Handled by your BMC lawyer
“A major customer or supplier could go into insolvency and I would not find out.”
Every morning we monitor insolvency proceedings involving your customers and suppliers. If one appears, the BMC person who manages your account knows about it.
Monitored by BMC, every morning
“Every time I engage a service, I am asked for my papers all over again.”
You upload your document and your beneficial ownership declaration once only, and we notify you in your client area before your verification expires.
In BMC One: Compliance › Verification
A sample year
What happens over a year for a limited company with BMC Legal: daily monitoring, deadlines, case files and your identification kept up to date.
MonitoringBORME and insolvency proceedings, every dayEvery day
Procedural deadlinesAlerts at 7, 3, 1 and 0 daysAlerts at 7, 3, 1 and 0
Case filesOne closes in January, another opens in SeptemberJanuary and September
IdentificationUp to date every 12 months, with notice in your client areaEvery 12 months
We keep watch for you
Every day we check the BORME, insolvency proceedings, the deadlines in your matters and the sanctions lists. Every alert reaches a person at BMC, who decides whether action is needed.BORME, insolvencies, deadlines and sanctions lists, 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 or your matter.
The BORME for your companies
On every BORME publication day, Tuesday to Saturday, we read and store the entries for your companies: insolvency, dissolution, removals from office or capital reduction; the alert is being fine-tuned.
PartialReceived by the person who manages your account
Insolvency of your customers and suppliers
Every morning we match your customers and suppliers against the Public Insolvency Register.
Received by the person who manages your account
Procedural deadlines
Calculated according to the branch of jurisdiction, allowing for August and public holidays. Every morning, alerts 7, 3 and 1 day before, on the due date and if it lapses.
Received by your lawyer
Sanctions lists
Your company, its beneficial owners and the customers and suppliers you add, screened again every day against 81 sources.
Received by the compliance team
Case law
Every day, the judgments of the Constitutional Court and the rulings of the Supreme Court published in the BOE go into our team's search tool.
Consulted by your lawyer; it does not generate alerts
Your employees' permits
The expiry of the TIE and of each authorisation held by your foreign employees, with an alert before it expires.
Received by our team
The notice, in your client area, before your verification expires. Everything else is passed on to you by the BMC person who manages your account, if it affects you.
The BORME, insolvency proceedings, deadlines, screenings and permits, as an alert to whoever manages your account or your matter.
Judgments are consulted in the search tool used by our team and its agents. They do not generate any alerts.
Everything it does
91 capabilities in six areas, each on one line: who carries it out and what it depends on.
Depending on your engagementdepends on what you engage or switch ondepending on what you engagePartialpart of it works, the line says whichBeing fine-tunedbuilt, we are adjusting it
In your portal
The signer
Automatic
Our team
By API and from your assistant
In your portal
Automatic
Our team
If you are setting up a company, see company formation with a BMC lawyer.
Automatic
Our team
In your portal
Automatic
Our team
Automatic
Our team
On the BMC website
With a BMC lawyer, corporate secretarial services for your companies and insolvency advisory and restructuring.
In your portal
Automatic
Our team
If you are bringing in people from outside the European Union, see corporate immigration.
Your assistant, connected
Your signature envelopes, signed documents, their evidence and the verification of each signature can be used from the assistant you already use, through MCP or the API. Always with its own scoped access, never with your session.Your envelopes, signed documents and their evidence, 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 signs for you, moves money or acts before a court or a registry.
Your assistantBMC One · Nórdica Muestra, S.L.
sign_envelopes_list · sign_envelope_statussign_envelopes_listRead · Analystsign_envelope_create · sign_field_placesign_envelope_createWrite · Operatorsign_pdf_download · sign_evidence_downloadRead · AnalystAnalyst: read only. Operator: read and ordinary write. Custom: permission by permission; critical actions open only with it.
No assistant signs for you, moves money or acts before a court or a registry.
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, with a webhook notification when an envelope is sent, signed, declined or voided.
Who it connects with
The trust seals behind every signature, the commercial and insolvency registers, the sanctions lists and the electronic offices of the Justice system and the Tax Agency.
From anywhere
Yes. BMC Sign is for private documents: commercial contracts, shareholder agreements, confidentiality agreements, authorisations and the engagement letter. Each signer receives a link and signs with a code sent by email or SMS, by hand or with their own certificate, in their language. Deeds and powers of attorney are still signed before a notary or at a consulate.
If you need a lawyer to draft or negotiate them, see our commercial contracts and shareholders' agreement services.
It depends on how you sign: with a code by email or SMS, by hand or with your own certificate. Each document carries BMC's advanced electronic seal, with a qualified FNMT certificate, a qualified timestamp and a QR code to check it. It is not a qualified signature, but an electronic signature cannot be denied legal effect or admissibility as evidence solely because it is electronic.
Yes, if your account has BMC Sign: with your templates, your sender name and your brand and, if you switch it on, with approval from another person in your company before sending. Before signing, each signer is screened against sanctions lists. Each account has a monthly envelope limit.
It is not a postal burofax (the Spanish certified letter with proof of content). From BMC One you send notices, formal demands or claims, and a record sealed by BMC proves the content, the date and the recipient of the sending, not its receipt or reading. It is admissible as evidence, and our team can also send it for you with the same record.
If the formal demand is not enough, the claim is handled by our litigation and arbitration team.
Your lawyer calculates each procedural deadline according to the branch of jurisdiction, taking August and public holidays into account, and saves it in your case file. Every morning they receive alerts 7, 3 and 1 day before, on the day it falls due and if it has passed. The alerts go to your BMC lawyer, who decides the next steps and tells you what affects you.
For the dispute itself, see disputes and dispute resolution with a BMC lawyer.
Only BMC's compliance team, who check them one by one: there is no facial recognition and no automatic reading. You upload them once from your portal, and we notify you in your client area before your verification expires. The law requires them to be kept for 10 years from the end of the relationship (art. 25.1 of Law 10/2010).
Sources: Law 10/2010, art. 25 (BOE)
If your company processes customer or employee data, see our data protection and privacy service.
The BMC person who manages your account is told. Every morning we check your customers and suppliers against the Public Insolvency Register; if one appears, that person knows and tells you if it affects you. Anyone can also check whether a company is in insolvency proceedings with the public insolvency checker on our website.
You can use it now: the public insolvency checker.
No. We use it to organise documents and prepare compliance screening on our own servers, without external AI providers. The one who decides, signs and files is always a person on our team, and no assistant connected to BMC One signs for you or acts before a court or a registry.
BMC
You tell us about your matter 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.
Free first meeting, no commitment
First meeting free. BMC One comes with every BMC engagement, at no separate fee.