Become someone who reads their own payslip

In 5 min you'll know: how to detect if your IRS (Portugal's personal income tax) withholding is too high and how to request an adjustment

Open your payslip. The gross salary goes in — let's say €1,200 — and the net salary lands in your account. But between those two numbers there's a line almost nobody checks: the IRS withholding tax. If that rate is set too high, you're handing the State hundreds of euros a year that you could be receiving at home every month. The only rule for this lesson: find out if your IRS withholding is too high and adjust it.

Your payslip has five parts that matter: the gross salary, the IRS withholding, the deductions for Segurança Social — linked to your NISS (Portuguese social-security number), the meal allowance, and the net salary you actually receive. The IRS withholding is calculated on the gross after deducting Segurança Social — not on the gross, not on the net. That means the rate your employer applies depends on your marital status and dependants, but the amount withheld can be higher than the tax you'll actually owe at the end of the year. That excess only comes back months later, in your IRS refund — no interest, no excuses.

Imagine you earn €1,200 gross. Deductions for Segurança Social: 11% (€132). That leaves €1,068. If your employer applies a withholding rate of 22.5%, they hold back €240.30. But at the end of the year, your effective IRS might only be 17%. Difference: about €66 a month, €792 a year that stayed in the State's hands instead of your account. It's not theft — it's bureaucracy. And you can fix it.

The warning sign: if you get a large IRS refund every year, that means you overpaid all year. You're not saving — you're lending the State money interest-free. Ask your employer to adjust your withholding. You can do this at any point during the tax year.

Calculate your real withholding (90 seconds) →

Your promise: This week, Friday at 7pm, I will open my home banking, compare my current withholding with the recommended rate, and send the adjustment request to HR if the difference is >€20/month.