2021
Module for calculating Withholdings
Single Module v 1.04 (794 KB - zip )
Includes the amendment to Royal Decree 899/2021, of October 19, which modifies the Personal Income Tax Regulations.
Technical Information
Algorithm for calculating the IRPF withholding rate for personal work income IRPF 2021 (until October 20, 2021) (777 KB - pdf )
Specifications for the computer development of the algorithm for calculating personal income tax withholdings for 2021
Algorithm for calculating the IRPF withholding rate for personal work income IRPF 2021 (as of October 21, 2021) (212 KB - pdf )
Specifications for the computer development of the algorithm for calculating personal income tax withholdings for 2021