Self-Employed Income Tax Return 2025 in Spain
If you need to file your self-employed income tax return (Declaración de la Renta) for the 2025 tax year in Spain, it is important to understand that this is not simply a matter of confirming the draft return.
When it comes to IRPF (Spanish Personal Income Tax), a poor review can result in paying more tax than necessary or making mistakes that may trigger enquiries or tax audits from the Spanish Tax Agency.
Key Dates and Deadlines
The Spanish tax return campaign for the 2025 tax year runs from April to 30 June 2026. Key deadlines include:
- Start of filing: April 2026
- End of tax campaign: 30 June 2026
- Deadline for direct debit payments: 25 June 2026
If the return results in tax payable and you choose to pay by direct debit, the amount is usually charged at the end of June. It is also possible to split the payment into two instalments with no interest.
For self-employed professionals, it is strongly recommended not to leave the filing until the last minute, as preparing the return properly requires a full review of the financial year.
Income You Must Declare as a Self-Employed Professional
One of the most common mistakes is assuming that the Spanish Tax Agency already has all the necessary information.
In the case of self-employed income, this is not true. Business income must be calculated by the taxpayer based on their accounting records and manually included in the tax return.
Some income data will appear in the tax information provided by the Tax Agency, mainly invoices with withholding tax (clients that are companies or professionals) and certain third-party reported income. However, this data is often incomplete or incorrect.
It is the taxpayer’s responsibility to declare all income, even if it does not appear in the draft return, including: Invoices without withholding tax (private clients), Cash payments, Income received via bank transfer or Bizum, Any other business-related income
Deductible Expenses in the Self-Employed Tax Return
For an expense to be tax-deductible, it must meet three requirements:, Be related to the business activity, supported by a valid invoice, and properly recorded in the accounts.
Common deductible expenses for self-employed professionals include:
- Social security contributions (self-employed quota), fully deductible
- Professional services such as tax advisers, lawyers or consultants
- All necessary business-related expenses
- Telephone and internet costs, proportionally to business use
As a special rule, self-employed professionals can deduct private health insurance premiums, within certain limits, including coverage for the taxpayer, spouse and children under 25 living in the same household:
- Up to €500 per person per year
- Up to €1,500 per person in case of disability
If you work from home, you may deduct a proportion of utility costs based on the percentage used for business purposes.
However, it is important to assess each case carefully, as the deductible amount is usually limited and may increase the likelihood of a tax review.
20% Tax Reduction for Starting a Business Activity
One of the most relevant tax benefits for new self-employed professionals is a 20% reduction on positive net income.
This reduction applies during the first tax year in which the activity generates a profit and the following year, provided the legal requirements are met.
In practice, this is a very valuable tax incentive, but it is often either not applied correctly or lost due to poor tax planning.
Common Mistakes in the Self-Employed Tax Return
In practice, the most frequent errors in the Spanish self-employed income tax return include:
- Accepting the draft return without reviewing it
- Failing to include all deductible expenses or incorrectly classifying them
- Not applying the 20% reduction for starting a business activity
- Incorrectly reporting income or failing to reconcile bank transactions with accounting records
These mistakes can lead to higher tax payments and/or tax enquiries from the Spanish Tax Agency.
Regional Tax Deductions in Andalucía
In addition to national deductions, Andalusia offers regional tax benefits that may reduce the final tax liability. Some of the most relevant include:
- Main residence rental deduction (especially for taxpayers under 35, subject to income limits)
- Birth or adoption of children
- Large family status deductions
- Education-related expenses (textbooks, school materials, language courses, etc.)
- Sports activity expenses (recently introduced in certain cases)
- Veterinary expenses for pets
- Other specific situations (disability, dependency, protected housing, etc.)
More information can be found here: https://sede.agenciatributaria.gob.es/Sede/ayuda/manuales-videos-folletos/manuales-practicos/irpf-2025-deducciones-autonomicas/comunidad-autonoma-andalucia.html
Tax Advisory Services for Self-Employed Professionals in Estepona
Filing a self-employed income tax return in Spain requires a detailed analysis of your business activity and all applicable deductions.
At our tax advisory firm in Estepona, we assist self-employed professionals with the preparation and review of their IRPF tax return, ensuring tax efficiency and reducing the risk of errors or tax adjustments.
If you are self-employed in Estepona or the Costa del Sol and would like to review your tax return before filing, feel free to contact us with no obligation.
