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Dividend Tax Calculator (Portugal)

Dividends are taxed at a flat 28% by default, but you can opt for aggregation (englobamento) and, for companies in Portugal or the EU, only half counts. Enter the gross dividends for the year, your marginal IRS rate and where the company is based, and the calculator compares the tax by each route and shows which one pays off.

Enter the gross dividends for the year and the marginal IRS rate you would have under aggregation. For companies in Portugal or the EU, only half the dividend is taxed under aggregation; from outside the EU, the full amount is.

Aggregation or the flat 28%?

Flat 28% (taxa autónoma)

Do nothing: the 28% withholding is the final tax.

Tax
€280.00
You keep (net)
€720.00

Aggregation (englobamento)

Opt to aggregate: only 50% of the dividend is taxed (Art. 40-A CIRS).

Tax
€175.00
You keep (net)
€825.00

Here it pays to opt for aggregation: you save €105.00 of tax versus the flat 28%.

Note: aggregation forces you to combine all income in the same category and can raise the rate on the rest of your income. Decide with your full IRS in mind.

Educational estimate, not tax advice. It compares the tax on dividends by each route; it does not compute your full IRS or the withholding at source on foreign dividends (double-taxation credit).

Video: how to use the calculator

What this calculator does

It compares the two ways of taxing dividends: the flat 28% autonomous (liberatória) rate and aggregation at the progressive IRS rates. For each route it shows the tax and the net amount you keep, and which pays less. The answer depends on your marginal rate and whether the company is in Portugal/the EU or outside it.

The flat 28% rate

When you receive dividends from shares, there is a 28% withholding at source as a final tax (Art. 71 CIRS). If you do nothing, that 28% is the final tax: the dividend is not added to your other income and you do not have to declare it. It is the simplest route and the calculator’s starting point.

Aggregation and the 50% rule

Alternatively, you can opt for aggregation (Art. 22): you add the dividends to your other income and tax them at your marginal IRS rate. The advantage is Art. 40-A: for dividends from companies resident in Portugal or another EU/EEA country, only 50% of the value is taxed under aggregation. The 28% already withheld becomes a payment on account (refunded at settlement). For dividends from outside the EU, the full amount counts.

Mind the rest of your income

The calculator compares the tax on the dividends only. But aggregation is an option that covers all income in the same category and can raise the marginal rate applied to the rest of your income. That is why the marginal rate is your own field: simulate with the rate you would have after aggregating and decide with your full IRS return in mind.

Worked example

You received €1,000 of dividends from a Portuguese company and your marginal IRS rate is 35%. At the flat rate you pay €280 (28%) and keep €720. Under aggregation, only 50% counts: €500 × 35% = €175 of tax, and you keep €825. Here aggregation saves €105. If the dividends were from a company outside the EU, the full amount would count: €1,000 × 35% = €350, and then keeping the flat 28% would pay off.

Frequently asked questions

Do I have to declare dividends on my IRS return?
If you keep the flat 28%, no: the withholding at source is the final tax and the dividend is not added to your other income. You only declare it (in Anexo E) if you opt for aggregation, or for foreign dividends with no Portuguese withholding (Anexo J). It is worth declaring when aggregation reduces your tax.
When does aggregation pay off?
For dividends from companies in Portugal or the EU, since only 50% is taxed, aggregation reduces the tax whenever your marginal rate is below 56% (half of that rate stays below 28%). As the top IRS marginal rate is much lower, aggregation usually reduces the tax on the dividends, but mind the effect on the rest of your income.
How does the 50% rule work?
Art. 40-A CIRS requires only 50% of dividends distributed by companies resident in Portugal or another EU/EEA state to be counted when you opt for aggregation. It is a measure to avoid economic double taxation (the company already paid IRC on the profit). For dividends from outside the EU, this reduction does not apply.
What about dividends from foreign shares?
Dividends paid by foreign companies usually suffer a withholding in the country of origin. In Portugal they are taxed at 28% (or by aggregation) and you can use the tax paid abroad as a credit for international double taxation, up to the limit of the Portuguese tax. That withholding at source is not computed here; it is declared in Anexo J.

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Author: Thorben Rasmus Idel · Reviewed by: Nahar Geva · Last reviewed: 2026-06-12