NIF
How to submit IRS (Income Tax Return) in Portugal 2023
Who has to submit IRS
In Portugal, tax returns must be filed by individuals who have earned income during the tax year that exceeds certain thresholds. The Portuguese tax system is based on a progressive tax rate, which means that individuals with higher incomes will pay a higher tax rate than those with lower incomes. The TAX number in Portugal is called numero de identificacion fiscal (NIF).