Tax returns: What the deadline for submitting them – How to get a tax discount
The AADE platform opened with 1.5 million taxpayers having pre-filled statements. Accountants warn about «traps» which may cost fines or lost tax exemptions. Critical points include new CDCs for 1.9 million VAT, a 4% discount for declarations up to 15 May 2026 with a one-off payment up to 31 July, and reduced living evidence for residences and IX. Declarations shall be submitted from 16 March to 15 July 2026, with a tax payment in 8 monthly instalments.





