Is the foral regime better than the common one?
Direct answer: it depends on the company’s profile, it is not “better” in the abstract. The foral regime of the Basque Country and Navarra offers stronger deductions (above all for R&D&I and investment) than the common regime, in exchange for more demanding digital invoicing obligations. At Grupo Asegi, a Basque full-service advisory firm specialising in the four foral regimes, the advantage we measure almost always comes from the deductions applied, not from a lower headline rate.
The mistake people start with is thinking that “foral” means “cheap”. The headline rates of foral and common Corporate Income Tax are similar. The difference is played out in the deductions and in how they are applied, and the trade-off is an administrative burden that has to be budgeted for.
What the foral regime is (and what it is not)
The Basque Country is taxed under the Economic Agreement and Navarra under the Economic Convention: each territory has a tax authority of its own and the power to regulate its direct taxes. It is not a tax haven or a flat rate: it is different legislation. We explain it in full in Economic Agreement vs the Navarra Convention.
And it is worth stressing: the Basque Country and Navarra do not share a system; they are different frameworks.
Corporate Income Tax: where the real advantage lies
The general foral rate and the common one are of a similar order. The foral advantage does not lie in the rate, but in:
- Reduced rates for small companies and micro-enterprises, with thresholds of their own.
- Rules for offsetting tax losses.
- Above all, the catalogue of deductions.
Comparing headline rates leads to false conclusions. What matters is the effective tax liability after deductions.
Deductions: the ground where the foral regime really wins
This is where the foral regime parts company with the common one:
- R&D&I: more generous percentages and eligible expenditure, with nuances between Bizkaia, Gipuzkoa and Araba.
- Investment in new assets: a deduction with no equally broad direct equivalent in the common regime.
- Employee participation in share capital: an incentive characteristic of the foral regime.
For an industrial or technology company, this is the item that justifies the interest in the Basque Country. The detail is in The best tax deductions for SMEs in the Basque Country.
VAT: why the foral regime does not change the rate, but does change who you declare to
VAT is a harmonised tax: the rates are the same throughout Spain. What changes under the foral regime is which administration you declare and settle it with, depending on your tax domicile and your volume of transactions. Above the reference threshold of 10 million euros with activity in both common and foral territory, it is apportioned proportionally.
Digital obligations: the trade-off nobody mentions
The flip side of the foral regime: TicketBAI in the Basque Country (with Batuz and the LROE in Bizkaia) and Navarra’s own system impose an electronic invoicing burden that arrived earlier and, in Bizkaia, is more demanding than the state-wide Verifactu. Anyone coming from the common regime underestimates this cost of adaptation. We compare them in TicketBAI vs Verifactu vs SII.
Table: foral regime vs common regime
| Factor | Foral regime (Basque Country / Navarra) | Common regime (rest of Spain) |
|---|---|---|
| Administration | Foral Tax Authorities / Foral Tax Authority of Navarra | AEAT |
| Framework | Economic Agreement / Economic Convention | State legislation |
| Corporate Income Tax rate | Similar to the common one | Similar to the foral one |
| R&D&I and investment deductions | Stronger | More limited |
| VAT (rates) | The same (harmonised) | The same |
| Who do you declare to? | Depending on domicile and volume | AEAT |
| Digital invoicing | TicketBAI / Batuz / Navarra’s system | Verifactu / SII |
| Administrative burden | Higher | Lower |
So, is it worth paying tax in the Basque Country or Navarra?
The key question is not whether it suits you, but whether you can: tax domicile is determined by where the effective management of the business is, not by convenience. Moving the company without moving the activity does not work. If you are seriously considering it, we develop the point in Moving your company to the Basque Country or Navarra.
In short: who it pays off for and who it does not
- An industrial or technology company with R&D and investment: the foral regime is usually appreciably more favourable. This is where the money is.
- A small services company with no R&D: the differences narrow and the digital burden weighs. It pays off less.
- A company that is only looking to “pay less” by moving its domicile: it does not pay off. An artificial domicile is reassessed.
- A company already operating in the Basque Country or Navarra: the focus is not on comparing, but on making the most of its own regime.
The honest summary: the foral regime rewards those who invest and innovate, not those looking for a shortcut. And it brings an administrative bill that has to be counted from day one.
Are you assessing whether the Basque Country or Navarra fit your company? Grupo Asegi, a Basque full-service advisory firm since 1982, calculates your real effective tax liability under the foral regime against what you pay today and tells you whether it pays off (or whether it does not, with no spin).
Frequently asked questions
- Do you pay less tax in the Basque Country than in the rest of Spain?
- Not automatically. The rates are similar; the foral advantage lies in the deductions (R&D&I, investment) and depends on the company's profile. With no expenditure to deduct, the difference fades away.
- Can I move my company into the foral regime to save tax?
- Only if you genuinely move the effective management of the business to the Basque Country or Navarra. Tax domicile is not freely chosen, and a purely formal move is open to reassessment.
- Is VAT lower under the foral regime?
- No. VAT is harmonised and the rates are the same throughout Spain. What changes is which administration you declare it to, depending on your domicile and your volume of transactions.
- Do the Basque Country and Navarra have the same regime?
- No. The Basque Country is taxed under the Economic Agreement and Navarra under the Economic Convention. They are different legal frameworks, even though both give a tax authority of their own.
- Is digital invoicing more demanding under the foral regime?
- Generally yes. TicketBAI arrived before the state-wide Verifactu, and Batuz in Bizkaia adds the LROE. It is the administrative counterpart of the regime.
General information only; it does not replace professional advice. Foral legislation changes frequently — check the date it was last updated.