Understanding the 2026 tax code updates

Each year, Spain's tax authority (AEAT) adjusts brackets, deductions, and filing deadlines. Zottio keeps its calculation engine updated automatically, so your return always reflects the current year's rules — you don't need to track these changes yourself.

For 2026, notable updates include adjustments to regional deduction thresholds and refined criteria for professional expense deductions for autónomos. Zottio's AI assistant can explain how any specific change applies to your situation when you ask.

You don't need to do anything to benefit from these updates — they're already built into your draft calculations. If a change affects a return you've already filed, Zottio will flag it during your next review.