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Savings · 2 min read

Why does a fixed-term deposit pay more than instant-access savings?

Money locked with a bank for a fixed term at a fixed rate; taking it out early costs a penalty.

In plain words

A fixed-term deposit or locked plan pays more because the saver gives up access; money needed before the end date, such as an emergency cushion, loses that extra to the early-exit penalty.

Two worked examples

UK
On £10,000, a flexible account at 3.5% earns £350 in a year; a one-year fixed-term deposit at 4.2% earns £420.
Break it early and a penalty can wipe out the extra £70.
Japan
On ¥1,000,000, a flexible account at 0.2% earns ¥2,000 in a year; a one-year fixed-term deposit at 0.4% earns ¥4,000.
Break it early and a penalty can wipe out the extra ¥2,000.

The common mistake

The mistake: Locking away money that may be needed soon because the locked rate is higher, then paying a penalty to get it back.

What’s true: The extra interest is the price of your patience — breaking the lock early usually hands it back.

Deposit insurance has a limit

Many countries insure bank deposits up to a limit per person, per bank. Money above the limit — or in a product that is not a bank deposit — is not covered if the firm fails. The cover follows the bank, not you: the same limit applies at each bank, and only to deposits.

US
The FDIC covers $250,000 per depositor, per bank, for each ownership category (2026).
$300,000 in one bank, all in one ownership category, leaves $50,000 uncovered; the same money held as $250,000 and $50,000 at two banks is covered in full.
Japan
The DICJ covers ¥10,000,000 of principal per depositor, per bank, plus its interest (2026).
¥13,000,000 in one bank leaves ¥3,000,000 uncovered; the same money held as ¥10,000,000 and ¥3,000,000 at two banks is covered in full.

Where you’ll meet it

  • 3–6 months, liquid, untouchedThe fund is not for returns — it exists so a bad month never touches your future money.
  • Cash loses to inflationPrices climbing while cash sits still is a pay cut nobody announces.
  • The gotcha clause hides on page 3The headline is marketing; the clause is the contract — the expensive sentence is the quiet one.

Related terms

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Education, not financial advice Source: Theorise lesson text