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Portugal Savings Interest Calculator
Work out net interest on a term deposit or savings certificates (Série F, 2.5% in October 2026) after the 28% withholding.
Net interest
1 010,52 €
| Gross interest | 1 403,50 € |
| IRS (28.000000000000004%, withheld) | − 392,98 € |
| Final balance | 11 010,52 € |
Interest on deposits and savings certificates pays 28% IRS, withheld at source. You can opt to add it to your IRS return if your rate is lower. Deposits are guaranteed up to €100,000 per person per bank.
Interest added once a year (certificates add quarterly: approximate). Checked: October 2026. Not legal, tax or financial advice. 🔒 Everything stays on your device.
✅ Rules last checked:
📚 Official sources: IGCP
We build every tool from the official rules and re-check them when they change. Always confirm with the official source before you rely on a result.
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Questions people ask
Is savings-certificate interest taxed?+
Yes, 28% withheld at source, like deposits.