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Fixed-term deposit calculator

Work out what you earn on a fixed-term deposit, after the Spanish withholding tax.

The money you put into the deposit.
The APR is the real annual return of the deposit.
How long the money stays locked. Decimals allowed (0.5 = 6 months).
Withholding on the interest. In Spain it is 19% for investment income.
Estimated average annual inflation. Shows whether the deposit keeps your purchasing power. In Spain it is usually around 2-3%.
Net final value
€10,243
Real value (today)
€9,993
Net interest
€243
Withheld
€57

Final value breakdown

Net final value€10,300
  • Capital€10,00097%
  • Net interest€2432%
  • Withheld€571%

Information, not tax or financial advice.

How the fixed-term deposit calculator works

A fixed-term deposit locks up your money for a period in exchange for known interest (the APR). It's among the safest products, but also among the least profitable.

How to read the result. You'll see the gross interest, the net final value and, if you enter an inflation figure, the real value (what that money is worth today). The interest is taxed in the savings base (19 % withholding, adjustable).

Worked example (default values). €10,000 at a 3 % APR for 1 year, with 2.5 % inflation:

  • Gross interest: €300.
  • After the 19 % withholding: €243 net (final value €10,243).
  • Real value (today's purchasing power): 10,243 / 1.025 ≈ €9,993.

An important note. Here's the catch: you earn €243 net, but with 2.5 % inflation your money loses purchasing power (from €10,000 real to €9,993). Always compare the interest with expected inflation.

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