Tax Planning for Businesses: Optimise Your Tax Burden

Tax planning in Spain is the legitimate practice of organising business and personal affairs to minimise tax liability within the legal framework, founded on the "economy of option" principle recognised by the Tribunal Supremo and constrained by the anti-abuse clause of Art. 15 LGT (conflict in the application of tax rules). For Spanish companies, core planning instruments include the participation exemption on intra-group dividends and capital gains (Art. 21 LIS), R&D deductions (Art. 35 LIS), the Patent Box regime (Art. 23 LIS), the capitalisation reserve (Art. 25 bis LIS), and the SME equalisation reserve (Art. 105 LIS); for individuals, planning integrates corporate remuneration structure, Wealth Tax exposure, and Inheritance and Gift Tax (ISD) succession instruments.

Our tax team stays permanently up to date on legislative changes, administrative rulings, and court decisions. This continuous vigilance allows us to anticipate opportunities and prevent contingencies before they materialise.

Why Tax Planning is Critical for Your Business Profitability

Most Spanish companies pay more tax than they need to by law — not because they commit infractions, but because they make tax decisions reactively: at year-end, when there is little room for manoeuvre. An investment decision taken in December without anticipating its tax impact can cost twice what it needed to. A corporate structure with two or three companies and no holding may be generating double taxation on dividends and unnecessarily complicating the owner’s succession planning. And a shareholder-director remuneration not optimised across salary, dividends, and benefits in kind can mean a difference of EUR 20,000 to EUR 50,000 per year in the group’s overall tax bill.

Our Tax Planning Process: Audit, Strategy, and Implementation

Our tax team always begins with a rigorous diagnostic: we audit the corporate structure, applicable tax regimes, deductions used, related-party transactions, and the owner’s remuneration. That diagnostic consistently reveals saving opportunities that had not been identified. On that basis, we design a personalised tax plan with specific measures and their quantified impact: corporate restructurings, special regime elections, R&D deduction optimisation, Patent Box, dividend planning, and shareholder-director remuneration structure. We implement the agreed measures and monitor compliance and regulatory changes proactively throughout the year — not just at year-end.

Regulatory Framework: Economy of Option and the Limits of Planning

Tax planning rests on the economy of option principle recognised by the Tribunal Supremo: taxpayers have the right to organise their affairs in the most tax-efficient manner, provided there is no simulation or abuse of law. Art. 15 LGT governs the conflict in the application of the tax rule — the anti-abuse clause — which allows the AEAT to reclassify transactions without genuine economic purpose. The LIS offers a broad catalogue of incentives: participation exemption on intragroup dividends and capital gains (Art. 21), R&D deductions (Art. 35), Patent Box (Art. 23), capitalisation reserve (Art. 25), and SME levelling reserve (Art. 105). Owner IRPF optimisation rests on Arts. 17-32 of Law 35/2006 governing employment income, capital income, and business income.

Real Results in Tax Planning: Quantified Savings Before Committing to Fees

• Diagnostic with quantification of identified savings potential: concrete figures before committing to additional fees.
• Personalised annual tax plan with measures prioritised by impact and implementation complexity.
• Average tax savings of 15-25% on the current tax bill for companies with no prior planning.
• Optimised, documented, and defensible corporate and remuneration structure before the AEAT.
• Proactive review ahead of every relevant regulatory change to maintain tax efficiency without retrospective audits.

Our tax team stays permanently up to date on legislative changes, administrative doctrine, and court decisions. This continuous vigilance allows us to anticipate opportunities and prevent contingencies before they materialise.

Tax planning is not a one-off year-end exercise: it is a continuous process that accompanies every significant business decision. When a company faces a corporate transaction, a restructuring, or an international expansion, the tax consequences must be analysed from the outset — not after the deal is closed. Decisions taken without considering their tax dimension generate avoidable costs that accumulate year after year.

We work with companies of all sizes, from family SMEs to groups with multiple entities and international operations. In every case, the starting point is a rigorous diagnostic that sets out the real situation: regimes applied, deductions used, contingency risks, and unexplored opportunities. Only from that precise knowledge is it possible to design a strategy that works.

The integration of tax with corporate structure is one of the highest-value dimensions. A well-designed holding can separate operating assets from patrimonial assets, facilitate profit reinvestment without additional tax cost, and simplify the owner’s succession planning. These benefits, compounded over several years, represent a real and measurable competitive advantage. Our restructuring experts work jointly with the tax team to ensure any structural change is executed with maximum tax efficiency.

Beyond structure, deduction optimisation is another core pillar. Spain offers significant tax incentives for investment in R&D, job creation, investment in disadvantaged zones, and internationalisation. However, many companies do not apply them correctly for lack of knowledge or adequate documentation. Our team ensures every euro of deduction you are entitled to is reflected in your return and backed by the documentation needed to withstand any AEAT review. Ongoing tax compliance is the indispensable complement to any planning strategy.

Strategic tax planning: the framework

Tax planning is the proactive management of an organisation’s tax position — structuring activities, transactions, and timing to minimise the present and future tax burden within the bounds of applicable law. It is distinct from tax avoidance (artificial transactions with no business substance, which the AEAT is empowered to challenge under the conflict in application of tax law provisions of the LGT) and from tax evasion (concealment of taxable income, which is a criminal matter).

Effective tax planning in Spain requires simultaneous optimisation across multiple tax dimensions: IS (or IRPF for unincorporated businesses), IVA, local taxes (IBI, IAE, IIVTNU), payroll taxes (IRPF withholdings, Social Security), and international dimensions where applicable. Our planning approach is always integrated — a decision that reduces IS at the expense of a larger Social Security liability may not represent a net saving.

Corporate tax planning for Spanish businesses

The primary levers in Spanish IS planning include:

Deduction optimisation: R&D&I deductions (25-42% on qualifying research expenditure; 12% on technological innovation), the patent box (60% reduction on qualifying IP income), international double taxation relief, and the reinvestment of capital gains deduction. Our R&D incentives team maximises these deductions through proper qualification and documentation.

Group structure: consolidated taxation for Spanish group companies allows loss offsetting, intra-group transaction simplification, and elimination of double taxation on intra-group dividends. For groups expanding internationally, the Spanish holding company (ETVE) structure provides participation exemption on dividends and capital gains from foreign subsidiaries.

Timing of income and expenditure: accelerated depreciation elections, provision timing (within LIS constraints), and year-end bonus structuring can shift tax charges between years in a manner that has real present-value benefit.

Financing structure: the thin capitalisation rules (Article 16 LIS) limit interest deductions to 30% of EBITDA (with a EUR 1 million de minimis). Within these constraints, optimising the debt-equity mix and the pricing of intercompany financing instruments can materially reduce the effective IS rate.

Personal tax planning for business owners

For business owners, the separation of business and personal tax planning is artificial — the total tax burden depends on how the business generates and distributes its income, which is a strategic choice. Key planning elements include:

Remuneration structure: the optimal combination of salary, dividend, pension contribution, and in-kind benefits for a controlling shareholder-director depends on the applicable IRPF and IS rates, Social Security implications, and the balance between personal income and retained earnings in the company.

Holding structure: interposing a holding company between the operating business and the individual owner can defer personal taxation on investment income, facilitate succession planning, and create a vehicle for diversifying business wealth into financial and real estate assets.

Retirement planning: Spain’s pension system (aportaciones a planes de pensiones) allows deductible contributions up to EUR 1,500 annually (individual) plus EUR 8,500 via employer contributions — tax-deferred savings that can be significant over a long career.

Regional tax efficiency: the material differences in ISD and IP regimes across Spain’s autonomous communities create planning opportunities for business owners considering retirement or succession. Establishing effective tax residence in a favourable region (Madrid, País Vasco, Navarra) before triggering a succession event can produce very significant ISD savings.

Tax planning within legal boundaries

The AEAT’s anti-avoidance toolkit has strengthened significantly in recent years: the general anti-avoidance rule (GAAR) under Article 15 LGT, the economic substance requirements for holding and IP structures, and the DAC6 disclosure obligation for cross-border arrangements — all constrain the planning space for artificial transactions. Our planning recommendations are always assessed against the AEAT’s stated positions (Consultas Vinculantes, Resoluciones TEAC) and our own experience of AEAT inspection activity to ensure that the planned position is defensible.

Contact our tax planning team for a strategic review of your personal and corporate tax position.

Tax planning for individuals: IRPF, wealth and succession

Individual tax planning in Spain encompasses IRPF (income tax), IP (wealth tax), and ITSGF (solidarity tax on large fortunes) for residents, and IRNR (non-resident income tax) for non-residents with Spanish-source income. For high-net-worth individuals, the interaction between these taxes — and the significant autonomic variation in rates — makes jurisdiction selection and residence planning a major planning lever.

The IRPF system taxes worldwide income of Spanish residents at progressive rates up to 47% at state level (plus the regional surcharge, which varies between 0% in Madrid and approximately 5% in Catalonia for the top bracket — creating a top combined rate of 47% in Madrid vs 54.9% in Catalonia for income above EUR 120,000). The savings base taxes capital income at 19-28%. The interaction between the general base and the savings base — particularly for income from business activities and investment income — creates planning opportunities around the timing of income recognition and the routing of investment returns.

The IP (Impuesto sobre el Patrimonio) taxes the net wealth of Spanish residents above EUR 700,000 (after a EUR 300,000 primary residence deduction), with rates from 0.2% to 3.5% (state) plus regional surcharges. Madrid has maintained a 100% bonification (reducing the effective rate to zero) since 2002, making Madrid fiscal residency a significant planning consideration for mobile high-net-worth individuals.

The ITSGF (Impuesto Temporal de Solidaridad de las Grandes Fortunas) was introduced in 2022 as a temporary complement to IP to prevent the Madrid bonification from creating a differential advantage. It applies to net wealth above EUR 3M at rates of 1.7% to 3.5%, with an IP credit for any IP actually paid. The interaction between IP and ITSGF requires careful planning to avoid double counting and to maximise the empresa familiar exemption where applicable.

Our individual tax planning practice coordinates IRPF planning, IP and ITSGF minimisation (including the empresa familiar regime), and succession anticipation strategies into an integrated plan updated annually. For clients with residence flexibility, we provide a rigorous analysis of the tax implications of different residence options — Spain, Portugal, Italy, UAE — in the context of their specific asset and income profile.

Self-diagnostic: is your tax position optimised?

Key questions that reveal whether strategic tax planning is being applied to your situation:

1. Does your company apply the capitalisation reserve (Art. 25 bis LIS) annually, and is the indisposable reserve properly documented?
2. Has a qualified professional reviewed whether your company’s software development, product development or process improvement activities qualify for the IS R&D deduction?
3. Are prior-year tax losses (BINs) being offset in the sequence and amounts that minimise the total tax cost over the carryforward period, or is the 70% cap being applied mechanically without a multi-year optimisation strategy?
4. For individuals: have you modelled the tax impact of different timing options for income recognition — dividends vs salary, capital gain deferral, retirement relief timing?
5. Is the current holding structure — number of entities, jurisdiction of each, intra-group flows — aligned with the current business and investment strategy, or does it reflect historical decisions that no longer reflect the current situation?

A negative answer to any of these questions indicates that a strategic tax planning review would likely identify saving opportunities. We conduct these reviews for new clients as part of the onboarding process and recommend an annual strategic review thereafter to capture the impact of regulatory changes and evolving business circumstances.