How the DGT's position has evolved
Current position
Interest of an indemnifying nature for compensation for damages is classified as capital gains. According to the doctrine of the Supreme Court, late payment interest for the refund of undue payments is not subject to IRPF (Personal Income Tax). In the case of interest for delay in the payment of salaries, these must be included in the general tax base and not in the savings tax base.
The DGT has maintained the distinction between remuneratory interest (returns on movable capital) and indemnifying interest (capital gains). However, the position has shifted to exclude the taxation of late payment interest for the refund of undue payments and to move the inclusion of certain indemnifying interest from the savings base to the general base.
Turning points
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It is established that late payment interest for the refund of undue payments is not subject to IRPF, following the doctrine of the Supreme Court.
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Interest for delay in the payment of salaries, although they are capital gains, must be included in the general tax base instead of the savings tax base.
Analysis based on 14 of 14 rulings with a stated position. Updated 26 September 2026.