How the DGT's position has evolved
Current position
The 30% reduction applies both to notoriously irregular income according to the IRPF (Personal Income Tax) Regulations and to income with a generation period exceeding two years. In the case of the latter, it is required that the income be linked to a period of seniority in the company of at least that period and that the agreement or convention exceeds said term. Scientific or academic prizes that do not enjoy an exemption and do not involve the transfer of rights are considered notoriously irregular income.
The DGT maintains a clear distinction between notoriously irregular income and income with a generation period exceeding two years. It has been confirmed that the five-year limitation does not affect income classified by regulation as notoriously irregular. The position on the application of the reduction to specific prizes and compensations remains constant in the analyzed rulings.
Turning points
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Clarifies that the limitation of not applying the reduction if it has been used in the previous five years only affects income with a generation period exceeding two years, not notoriously irregular income.
Analysis based on 26 of 28 rulings with a stated position. Updated 24 September 2026.