Observed arrival · 2026-10-11

IRS Ano a Ano: Portugal’s year-by-year tax simulator

irsanoaano.com Visit website

Editorial interest 78/100 Selection signal · not a rating of the site

An interactive simulator compares Portuguese IRS for the same income across tax years from 2005 to 2027.

Landing page captured for the 2026-10-11 issue.

For: Portuguese taxpayers comparing tax across years
Worth noticing: Options include inflation-adjusted values using Portugal’s INE IPC and a switch to include Social Security contributions.

Field notes

The input form distinguishes monthly from annual income and includes options for joint or separate taxation, regional rules, dependents, and multiple expense deductions. Its advanced controls also let users compare nominal amounts with constant-price figures or include Social Security contributions. The page links out to year-specific tax tables and legislation; the latest year shown, 2027, is marked as an estimate.

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●ProPolished or operationally mature

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