Quick Answer: A micro-enterprise with a €200,000 taxable base pays €41,000.00 in Impuesto sobre Sociedades for periods beginning in 2026 -- 19% on the first €50,000 and 21% on the rest, an effective rate of 20.50%. That is €9,000 less than the general 25% rate. Which regime applies depends on your turnover, not your profit.
Overview
Spain has three corporate rate structures for 2026, and the one you fall into is determined by net turnover (importe neto de la cifra de negocios) rather than by how much profit you make.
- General rate: 25%
- Entidades de reducida dimensión (article 101 LIS): 23%
- Micro-enterprises, turnover under €1 million: 19% on the first €50,000 of taxable base, 21% above
The micro-enterprise structure is banded, so its effective rate sits between 19% and 21% and never reaches the 23% reduced-dimension rate. A micro-enterprise therefore always pays less than a reduced-dimension company on the same taxable base.
How This Is Calculated
For the general and reduced-dimension regimes, a single rate applies to the whole taxable base.
For micro-enterprises the base is split:
Because the first €50,000 is always taxed at 19%, the effective rate approaches 21% asymptotically without reaching it.
Worked Example
€200,000 taxable base, micro-enterprise:
- First €50,000 at 19% = €9,500
- Next €150,000 at 21% = €31,500
- Total: €41,000, an effective rate of 20.50%
- Against the general 25% rate (€50,000), a saving of €9,000
The same base as a reduced-dimension entity: €200,000 × 23% = €46,000.
The same base at the general rate: €200,000 × 25% = €50,000.
A micro-enterprise with exactly €50,000: entirely within the low band, so €9,500 at an effective rate of exactly 19.00% -- the lowest available.
What This Does Not Account For
- Determining the taxable base. Amortisation, provisions, non-deductible expenses and the limitation on interest deductibility all sit upstream of the figure entered here.
- Whether you qualify for a regime. Micro-enterprise and reduced-dimension status turn on net turnover and on group-level tests, not on profit.
- Newly created companies, which have their own reduced rate for the first profitable periods.
- Deductions and bonificaciones, including R&D and technological innovation credits, which reduce the final liability.
- The minimum taxation rule (tributación mínima) for larger groups, which sets a floor on the effective rate.
- The régimen de consolidación fiscal, under which a group is taxed as one entity.
- Pillar Two top-up tax for groups above €750 million of revenue.
- Pagos fraccionados, the instalment payments made during the year.
- Loss carry-forward restrictions for larger companies.
Common Pitfalls
- Choosing the regime by profit rather than turnover. The tests are based on net turnover. A company with modest profit but large turnover is not a micro-enterprise.
- Applying 21% to the whole base for a micro-enterprise. The first €50,000 is at 19%, so doing so would overstate the tax by €1,000 on any base above the threshold.
- Assuming reduced dimension is the best regime. It is 23% flat, which is worse than the micro-enterprise structure at every level of taxable base.
- Ignoring the group tests. Turnover is measured at group level where a company forms part of one, so a small subsidiary of a large group will not qualify.
- Forgetting the minimum taxation floor. Deductions cannot reduce the effective rate below the statutory minimum for companies within its scope.
- Confusing the effective and marginal rates. A micro-enterprise at €200,000 has a 20.50% effective rate but a 21% marginal rate.
Frequently Asked Questions
What are the Spanish corporate tax rates for 2026?
25% general, 23% for entidades de reducida dimensión under article 101 LIS, and for micro-enterprises with net turnover below €1 million, 19% on the first €50,000 of taxable base and 21% above.
How do I know which regime applies?
By net turnover, not profit. Micro-enterprise status requires turnover under €1 million, and reduced-dimension status has its own threshold under article 101. Group-level turnover is used where the company belongs to a group.
Why is my effective rate 20.50% rather than 21%?
Because the first €50,000 of taxable base is always charged at 19%. That lower slice pulls the average down, and the effective rate approaches 21% as the base grows without ever reaching it.
Is the reduced-dimension rate better than the micro rate?
No. At 23% flat it is higher than the micro-enterprise effective rate at every level of taxable base, which never exceeds 21%.
Does this include deductions and credits?
No. R&D and innovation credits, and other bonificaciones, reduce the final liability and are not modelled here. Neither is the minimum taxation floor that limits how far they can reduce it.
What about newly created companies?
They have a separate reduced rate for their first periods with a positive taxable base, which this calculator does not apply.
Sources
- Agencia Tributaria: "Impuesto sobre Sociedades -- Tipo impositivo" -- general 25%, reduced dimension 23%, and the micro-enterprise structure of 19% up to €50,000 and 21% above for periods beginning in 2026
- Ley 27/2014 del Impuesto sobre Sociedades, article 101 (entidades de reducida dimensión)
- All figures verified on 30 August 2026