Summary: Form 200 for Corporation Tax for the 2025 financial year must be submitted between 1 and 27 July 2026 (by 22 July if payment is made by direct debit).
The main changes for this financial year are the new reduced tax rates for micro-SMEs and small businesses, the increase in the capitalisation reserve to 20 per cent, the extension of the freedom to amortise for renewable energy, and the minimum tax rate of 15 per cent for large companies. An inactive company is also required to submit the tax return, failing which it may face penalties and the loss of tax loss carry-forwards.
⚠️ Deadline: the 2025 corporation tax return must be submitted by 27 July 2026. The deadline for setting up a direct debit for the payment is 22 July.
July is the month for corporation tax. For companies whose financial year coincides with the calendar year – the vast majority – the deadline for submitting Form 200 for the 2025 financial year is 27 July 2026. If you opt to pay by direct debit, the actual deadline is 22 July.
The 2025 tax year introduces significant regulatory changes that directly affect the outcome of the tax return: new tax rates for small businesses, amendments to the capitalisation reserve and adjustments to the minimum tax. It is essential to be aware of these changes before submitting your return: they could make a significant difference to the tax due or the deductions applicable.
This article explains the key changes introduced by IS 2025, the specific obligations for foreign subsidiaries and branches in Spain, and the most common mistakes to avoid before the deadline.
When is Form 200 for corporation tax due in 2026?
For companies with a financial year-end on 31 December 2025, the Form 200 filing period runs from 1 to 27 July 2026. The general deadline is 25 July, but as this falls on a Saturday, it is extended to Monday, 27 July. Filing must be done exclusively online via the Spanish Tax Agency (AEAT) website.
If the tax return shows that tax is due and you wish to set up a direct debit, the deadline is brought forward to 22 July. After that date, payment must be made by payment slip or at a participating financial institution.
Do you have to submit Form 200 if the company has not carried out any business activities?
Yes. The obligation to submit Form 200 remains even if the company has not carried out any business activities or has ended the financial year with a loss. An inactive limited company that fails to submit the form is liable to the minimum penalty set out in Article 198 of the General Tax Law (LGT) – 300 euros – and, more importantly, risks having the negative tax base for that financial year invalidated, meaning it cannot be carried forward for future tax returns.
Updates to Corporation Tax for 2025
1. New types of tax for small businesses
The standard rate of corporation tax remains at 25 per cent. However, the 2025 financial year introduces a progressive reduction in rates for smaller companies, with a tiered structure that is the first of its kind in corporation tax.
| Type of organisation | Turnover (INCN) | Type of tax 2025 |
|---|---|---|
| Micro-SMEs: | Less than €1,000,000 | :19 per cent (on the first €50,000 of the tax base) / 21 per cent (on the remainder) |
| Small organisations | :Between €1 million and €10 million | :24 per cent in 2025 (23 per cent in 2026, 22 per cent in 2027) |
| General category: | Over €10 million | :25 per cent |
| Newly established entities | :Not applicable | ;15% (first period with a positive tax base and the following period) |
The minimum tax liability is also adjusted in line with these new rates: for micro-SMEs and small entities, the minimum net tax liability is calculated by applying fifteen twenty-fifths of the relevant tax rate. Before applying any deductions, it is advisable to check that the applicable rate is correct, based on the entity’s turnover and tax regime.
2. Capitalisation reserve: the percentage rises to 20 per cent
Act 7/2024 increased the percentage of the capitalisation reserve from 15 per cent to 20 per cent of the increase in equity for the financial year. Furthermore, this percentage may rise to 30 per cent if certain criteria relating to the growth in the average workforce are met.
The upper limit on the adjustment to the tax base is also being increased: from the previous 10 per cent to 20 per cent of the previous positive tax base. For entities with a turnover of less than one million euros, the limit is raised to 25 per cent. The increase in equity capital justifying the reduction must be maintained for three years, which requires monitoring in subsequent financial years.
3. Flexibility regarding depreciation for investments in renewable energy
Royal Decree-Law 7/2026 has extended, for investments made in 2025 and 2026, the freedom of depreciation applicable to assets that use renewable energy and replace fossil fuel-powered installations. This includes electric vehicles and charging points. Unrestricted depreciation gives rise to a negative off-balance-sheet adjustment in the year of the investment, which reduces the tax base for 2025, and positive adjustments in subsequent financial years.
4. A minimum tax rate of 15 per cent for large companies
For companies with a turnover exceeding 20 million euros or groups subject to tax consolidation, the net tax liability cannot be less than 15 per cent of the adjusted tax base. However many deductions and allowances are applied, this is the tax floor. In practice, it is advisable to calculate the minimum tax liability before applying deductions, to avoid tax planning strategies that ultimately fail to reduce the effective tax liability.
Foreign subsidiaries and branches in Spain: specific obligations
A Spanish subsidiary of a multinational group is subject to corporation tax in exactly the same way as any other Spanish company. However, there are additional obligations arising from its international nature that should not be overlooked.
Related-party transactions and transfer pricing
Transactions between the Spanish subsidiary and other group entities (royalty payments, intra-group services, intercompany loans, and the sale and purchase of assets) must be valued at arm’s length. Furthermore, if the volume of related-party transactions exceeds certain thresholds, there is an obligation to submit Form 232 by 30 November.
Transfer pricing documentation is not attached to Form 200, but must be made available upon request by the AEAT. Failure to provide it during an audit may result in significant adjustments and penalties.
Exemption from tax on dividends and capital gains arising from foreign sources
Dividends received by the Spanish subsidiary from its foreign investees and capital gains arising from the disposal of shareholdings in non-resident entities may be exempt in Spain under Article 21 of the Corporation Tax Act (LIS), provided that the minimum 5 per cent shareholding requirement is met and that the investee has been subject to a tax equivalent to corporation tax in its country of residence. This participation-exemption regime requires a case-by-case analysis.
How is a Spanish branch of a foreign company taxed?
A Spanish branch of a foreign company is subject to Non-Resident Income Tax via Form 206, not via Form 200 for Corporation Tax. The treatment differs, and confusion between the two concepts (subsidiary vs. branch) has significant tax implications. The deadline for submitting Form 206 is also in July.
The most common mistakes made before the end of July
- Mixing the year-end accounts with the preparation of the tax return at the last minute. Form 200 takes into account accounting records, instalment payments already made, tax deductions paid, tax losses from previous financial years, deductions supported by documentation, and off-balance-sheet adjustments. If the accounts are finalised late, the time available to review all these items before 27 July is dangerously short.
- Failure to check the applicable tax rate. With the new rates for micro-SMEs and small businesses coming into force in 2025, the rate applicable in 2024 may not be the same as that in 2025. The calculation must be based on the actual turnover for the financial year.
- Failing to offset tax losses from previous financial years. Accumulated negative tax bases are a valuable tax asset that many companies fail to utilise correctly due to a lack of documentary control. The Spanish Tax Agency (AEAT) may require proof of the origin and amount of each negative tax base that has been offset.
- Failing to document related-party transactions adequately before submitting the return, which is particularly relevant for international groups. If it is discovered in July that transfer pricing documentation is missing, there is not enough time to prepare it to the required standard.
What to do over the next three weeks
If the 2025 year-end accounts have already been approved, the next step is to prepare the off-balance-sheet adjustments: identify non-deductible expenses, calculate the capitalisation reserve where applicable, check the applicable tax rate and review the deductions against their supporting documentation.
If the year-end closing has not yet been finalised, now is the time to speed it up. The annual accounts must be approved by the general meeting before the corporation tax return is filed, and whilst their filing with the Commercial Register has its own deadline of up to July, this is contingent upon the corporation tax return having been filed.
For subsidiaries of multinational groups, it is also advisable to check whether the instalment payments made in April and October 2025 reasonably cover the final tax liability, and whether there are any tax positions that require analysis before they are included in the tax return.
Frequently Asked Questions about Corporation Tax 2025
What is the deadline for submitting Form 200 for the 2025 tax year?
From 1 to 27 July 2026 for companies with a calendar financial year. If payment is set up by direct debit, the deadline is brought forward to 22 July.
What happens if my SL has not been active in 2025?
The obligation to submit Form 200 remains in force. Failure to do so results in a minimum fine of 300 euros (Article 198 of the General Tax Law) and the loss of the right to offset the negative tax base for that financial year in the future.
What type of corporation tax will a micro-SME be liable for in 2025?
19 per cent on the first €50,000 of the tax base and 21 per cent on the remainder, provided that the turnover is less than €1,000,000.
To what is the 20 per cent capitalisation reserve applied in 2025?
It applies to the increase in equity for the financial year, up to a limit of 20 per cent of the previous positive tax base (25 per cent for companies with a turnover of less than one million euros). The increase in equity must be maintained for three years.
Does a Spanish branch of a foreign company submit Form 200?
No. Pay Non-Resident Income Tax using Form 206, which is a different form from that used by subsidiaries.
Do you have a subsidiary in Spain or an SL with international operations?
At GR International Advisors, we prepare and submit Form 200 for companies engaged in cross-border activities, related-party transactions and international structures. If you need to submit your corporation tax return by 27 July, there is still time.