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High-yield account calculator

Work out the return of a high-yield savings account, after the Spanish withholding tax.

The money you keep in the account.
The APR is the annual return of the account. It often changes over time.
How long you keep the balance. Decimals allowed (0.5 = 6 months).
Withholding on the interest. In Spain it is 19%.
Estimated average annual inflation. Shows whether the account keeps your purchasing power. In Spain it is usually around 2-3%.
Net final balance
€10,203
Real value (today)
€9,954
Net interest
€203
Withheld
€48

Final balance breakdown

Net final balance€10,250
  • Balance€10,00098%
  • Net interest€2032%
  • Withheld€480%

Information, not tax or financial advice.

How the high-yield account calculator works

A high-yield account pays interest on the money you hold in it while keeping immediate access (unlike a deposit, which locks it up).

How to read the result. You'll see the interest at the stated APR, the net final balance and, if you enter an inflation figure, the real value of that balance. As with deposits, the interest is taxed in the savings base (19 % withholding, adjustable).

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

  • Gross interest: €250.
  • After the 19 % withholding: €202.50 net (final balance €10,202.50).
  • Real value (today's purchasing power): 10,202.50 / 1.025 ≈ €9,954.

Here the withholding and inflation eat the whole return: the balance grows, but your purchasing power falls from €10,000 to about €9,954.

An important note. Read the small print: many accounts cap the rewarded balance, require a salary direct debit, or pay the high rate for only a few months. And compare the interest with inflation.

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