Changes and improvements

Every time we fix a calculation, extend coverage to a new territory, or verify an official figure, it is logged here with a date. This is the living counterpart to the methodology page: not how the calculation works, but what has improved and when.

1. 2026-07-10Calculation fix

   The self-employed (RETA) contribution calculator now also estimates annual income tax: from your annual net income, it applies the reduction for hard-to-justify expenses (5%, capped at 2,000 euros), reuses the same personal and family minimum and the same general IRPF scale as the net salary calculator, and compares the result against what your invoices already had withheld (15%, or 7% if newly self-employed) to estimate whether you are due a refund or owe more. Verified against the Reglamento del IRPF (Real Decreto 439/2007), arts. 30 and 95, and Ley 35/2006 (IRPF), art. 30.2.4ª.

   Affected tool: Self-employed (RETA) contribution Official source

2. 2026-07-02Calculation fix

   Fixed a case where the cap on regional deductions was calculated against the pooled quota instead of the regional quota alone, which could overstate the deduction in the annual settlement.

   Affected tool: IRPF by region

3. 2026-07-01Calculation fix

   Added the savings-income base (interest, dividends, capital gains) to the calculator, with its own nationwide savings scale, independent of the region selector.

   Affected tool: Net salary calculator

4. 2026-07-01Calculation fix

   Corrected the Bizkaia (País Vasco) IRPF scale to the actual 2025 tarifa: the previous figure did not match the norma foral in force.

   Affected tool: IRPF by region

5. 2026-07-01Calculation fix

   Added the full mínimo personal y familiar (age, disability, ascendants and descendants) and the joint-taxation option to the annual settlement.

   Affected tool: Net salary calculator

6. 2026-06-28Calculation fix

   Verified the Madrid, Cataluña and Comunitat Valenciana autonomic scales against the AEAT's Manual práctico de Renta: Madrid and Valencia's upper brackets were outdated, and Cataluña had been restructured by Decreto-Ley 5/2025.

   Affected tool: IRPF by region

Read the full methodology