Skip to content
Calculadora Capital

IRS Tax Deduction Calculator (Portugal)

How much can your expenses cut from your Portuguese income tax (IRS)? This calculator adds up the main deductions from the IRS coleta, general invoices, health, education, nursing homes and alimony, applying each category cap and the global ceiling that depends on your income. Enter your taxable income and the household expenses to see the total deduction.

Enter the taxable income (the amount IRS is charged on) and the household expenses by category. Each category deducts a percentage, up to a cap; the sum of health, education, homes and alimony is also subject to a global ceiling that depends on income.

Total deduction from the IRS coleta
€1,300.00
This amount is subtracted directly from the IRS due (or increases your refund).
CategoryRateDeduction
General expenses (invoices)35%€250.00
Health15%€450.00
Education30%€600.00
Sum subject to the global ceiling€1,050.00
Global ceiling at this income€2,255.97
Total deduction from the coleta€1,300.00

General expenses (invoices) reached the cap of €250 per taxpayer. This cap stays outside the global ceiling.

Estimate for residents in mainland Portugal, with the 2026 values (stable versus 2025). It does not include rent/mortgage interest, the sector VAT-invoice deduction, tax benefits (PPR) or the deductions for dependents or disability.

Educational estimate, not tax advice. The percentages, category caps and the 2026 global ceiling are official. Always check the figures on your IRS return and on the Portal das Finanças.

What a deduction from the coleta is

IRS is computed in two stages. First the coleta is worked out, the tax produced by the brackets applied to your taxable income (that is what the IRS calculator does). Then the deductions you are entitled to for your expenses are subtracted from the coleta. This calculator handles that second stage: every euro of deduction directly reduces the tax due (or increases your refund).

Each expense deducts a percentage, up to a cap

Expenses are not deducted in full: a percentage is deducted, up to a cap per category. General family expenses (invoices requested with your NIF) deduct 35%, up to €250 per taxpayer. Health deducts 15%, up to €1,000. Education deducts 30%, up to €800. Nursing homes deduct 25%, up to €403.75. Alimony paid deducts 20%, with no cap of its own.

There is also a global ceiling, depending on income

On top of each category cap there is a global ceiling (article 78(7) of the IRS Code) on the sum of health, education, homes and alimony. People whose taxable income is within the first bracket (up to €8,342 in 2026) have no ceiling. Above €80,000 the ceiling is €1,000. Between the two, it falls linearly from €2,500 down to €1,000. General invoices stay outside this ceiling and add on top.

Families with 3 or more dependents

The global ceiling is raised by 5% per dependent for families with 3 or more dependents (article 78(8)). Enter the number of dependents to apply that uplift. Also state whether the return has one or two taxpayers (a couple), because the cap on general expenses is €250 per taxpayer (€500 for a couple).

What is not in this sum

To keep the numbers reliable, this calculator covers the stable, most common deductions. It does not include rent or old mortgage interest (the 2026 rent cap is not yet settled), the sector-by-sector VAT-invoice deduction (computed automatically by the tax authority), tax benefits such as the PPR (see the PPR calculator), or the deductions for dependents/ascendants or disability. These are explained in the article.

Worked example

Imagine a taxable income of €20,000, a single taxpayer with no dependents, with €2,000 of general invoices, €3,000 of health expenses and €2,000 of education. General invoices give 35% = €700, but are capped at €250. Health gives 15% = €450 and education 30% = €600, totalling €1,050 subject to the global ceiling. As the ceiling at this income is about €2,256, the €1,050 passes in full. The total deduction from the coleta is €250 + €1,050 = €1,300, subtracted from the IRS due.

Frequently asked questions

What are deductions from the IRS coleta?
They are amounts subtracted directly from the tax (the coleta) because of certain expenses: general invoices, health, education, nursing homes and alimony, among others. Unlike specific deductions (which reduce income), every euro of deduction from the coleta directly reduces the IRS due.
How much do health and education expenses deduct on IRS?
Health expenses deduct 15%, up to €1,000 per household. Education expenses deduct 30%, up to €800. These amounts are still subject to the global ceiling of article 78, which depends on the household taxable income.
What is the cap on invoices (general family expenses)?
General family expenses, invoices requested with your NIF in any sector, deduct 35%, up to €250 per taxpayer (€500 for a couple with joint taxation). This deduction is outside the global ceiling, so it always adds on top of the others.
What is the global ceiling on deductions from the coleta?
It is a maximum, under article 78(7), on the sum of health, education, homes and alimony deductions. People within the first income bracket have no ceiling; above €80,000 the ceiling is €1,000; between the two it falls linearly from €2,500 to €1,000. Families with 3 or more dependents have the ceiling raised by 5% per dependent.
Is rent included in this calculator?
No. The deduction for permanent-home rent and for mortgage interest on pre-2012 contracts exists (article 78-E), but the 2026 rent cap is not yet settled, so we leave it out rather than show a wrong number. We explain the rule in the article.
Is this the same deduction as in the IRS calculator?
No. The IRS calculator computes the coleta, the tax produced by the brackets on the taxable income. This calculator handles the next stage: the deductions from the coleta that reduce that tax. Use both together to understand how much you will pay or get back.

Related calculators & reading

Embed this calculator

Paste this code on your site to show the calculator. It includes an attribution link.

Language
Theme
Colour

Preview

Free to use. The code auto-adjusts its height.

Sources

Author: Thorben Rasmus Idel · Reviewed by: Nahar Geva · Last reviewed: 2026-06-27