IRPF (Income Tax for Physical Persons)
IRPF is an acronym in Spanish for 'Impuesto sobre la Renta de las Personas Físicas', which translates to 'Income Tax for Physical Persons' in English. In Spain, this is a personal income tax applicable to all physical persons residing in the country who have financial income (such as salaries, pensions, and savings) or real estate income. This tax is a direct, personal, subjective, analytic, and progressive tax collected annually.
Have you completed your IRPF declaration this year?
In this context, the speaker is asking the listener whether they've submitted their IRPF (Income Tax for Individuals) declaration for the current year.
The IRPF is a progressive tax in Spain.
This sentence is stating that the IRPF, or Income Tax for Individuals, in Spain is a progressive tax, which means the tax rate increases as the taxable amount increases.
Self-employed individuals have to pay the IRPF quarterly.
This sentence tells us that self-employed individuals, referred to as 'autónomos', are required to pay the IRPF, or the personal income tax in Spain, on a quarterly basis.