The calendar waits for no one: there are barely ten days left until the end of the 2025 tax return filing period. In this final stretch of June, the temptation to “accept the draft” to fulfill the requirement is high, but at Ruiz & Associates we warn that rushing is usually the biggest source of tax evasion for taxpayers. The Tax Agency offers you a draft, not optimized tax planning. 📉
Filing a flawless tax return requires verifying the data that the Tax Agency takes for granted. In 2026, with the massive cross-referencing of banking and asset data, the mistake will no longer be simply failing to file a return, but also failing to claim what is legally yours.
🏠 Deductions for housing and energy efficiency
One of the areas where the most money is lost due to lack of review is housing. If you carried out energy efficiency improvements in your main residence or a rented property during 2025, you are entitled to deductions that can reach up to 60% in certain cases. 🔋
It is essential to have the energy efficiency certificate issued both before and after the construction work. Without this technical documentation, any tax deduction claimed will raise red flags with the tax authorities AI. Don’t let a necessary investment become a missed opportunity for tax savings.
👪 The oblivion of regional deductions
The Tax Agency’s draft is usually very efficient with state data, but often ignores regional deductions. Depending on your residence, there are benefits for:
- Educational and childcare expenses.
- Rental of housing for young people or people with disabilities.
- Investment in start-ups.
- Donations to cultural or research entities.
These deductions can make a difference of hundreds of euros in the final result. At our firm, we review the regional tax code to ensure that your 2025 tax return takes advantage of every incentive available in your Autonomous Community. ✅
🪙 Cryptoassets and income abroad
If you traded cryptocurrencies or hold assets outside of Spain during 2025, your tax return becomes more complex. The Spanish Tax Agency already receives detailed information from exchanges and other member states.
Omitting these incomes or declaring them incorrectly is the most common mistake in 2026. Remember that proactive self-correction is the basis for invoking the right to excuse errors and avoid tax penalties. Don’t wait for the algorithm to detect the discrepancy; be the one to present the information with technical rigor. 🛡️
💼 Deductible expenses for self-employed workers in the Income Tax
For self-employed professionals, the 2025 tax return represents the culmination of their annual activity. It is vital to ensure that all expenses related to their business—supplies, training, insurance—are correctly reported.
The use of mandatory electronic invoicing systems simplifies this task, but expert oversight is always necessary to determine which expenses are truly deductible and which might be challenged by an audit. An expense incorrectly classified today could be a requirement tomorrow.
You can find the complete list of income from work and economic activities in the AEAT Income Manual.
🏢 The importance of a professional review
Accepting the draft without further review means giving up your right to tax optimization. Your tax return is a summary of your financial and family life from the previous year, and it deserves the same attention as the accounting of a large company. 🤝
At Ruiz & Associates, we have been ensuring for over 30 years that our clients don’t pay a single euro more than the legal minimum. Our role in these final days of the tax campaign is to act as the final filter, guaranteeing legal certainty and the maximum possible savings.
Still have questions about your draft tax return or haven’t filed yet? The deadline is June 30th, but for direct debit payments, the deadline is even closer. Contact us today and leave your 2025 tax return in expert hands. 🚀
