Joint or separate? Find out which IRS return costs your family less.
Married couples and unmarried partners in Portugal can file one IRS return together or one each. The tax can differ by hundreds of euros. irsplit works out both from a few plain questions, so you do not have to fill in the Portal das Finanças simulator twice.
Plain questions
What you earned, what was withheld, who lives with you, what you spent on health, school and rent. No tax vocabulary needed.
Both options, side by side
The estimated tax, refund or amount to pay for joint filing and for each of you filing separately, and which one is lower.
IRS Jovem check
Whether someone in the household is under 35 and in their first ten years of work, which year of the scheme they are in, and how much income it exempts.
Deductions by category
What your expenses are worth in each category — general family, health, education, rent, care homes, invoices — and where you hit the limit.
Saved for next year
Save a scenario with a free account. Next season, open it, change the numbers that moved, and compare again.
Join the waitlist for IRS season
One email in April, when the Portal das Finanças opens for returns. Nothing else.
irsplit gives an estimate, not tax advice. It covers employment income (category A) and the common deductions; the Portal das Finanças has the last word when you submit.