CD Calculator
Updated on 22 Oct 2026 · Checked by Aotob
$10,000 at 4.25% APY for 1 year earns $425.
You get back $10,425 when it matures. Interest is usually taxed as income in the year it is paid.
Interest after 1 year
$425
Only lock away money you won’t need: leaving early usually costs a few months of interest.
Show the working
Balance = 10,000 × (1 + 4.25%)12/12 = 10,425.00
Other terms at the same rate
| Term | Interest | Balance |
|---|---|---|
| 3 months | 104.60 | 10,104.60 |
| 6 months | 210.29 | 10,210.29 |
| 1 year | 425.00 | 10,425.00 |
| 1 year 6 months | 644.23 | 10,644.23 |
| 2 years | 868.06 | 10,868.06 |
| 3 years | 1,329.96 | 11,329.96 |
| 5 years | 2,313.47 | 12,313.47 |
Questions people ask
What is a CD?
A certificate of deposit: you lock money away for a fixed term at a fixed rate. In the UK and Ireland the same thing is a fixed-rate bond or fixed-term deposit.
What is an early withdrawal penalty?
Usually a number of months of interest. A 12-month CD often charges 3 months; longer terms 6 to 12 months. Some UK bonds do not allow early access at all.
Is a CD safe?
Deposits are protected up to $250,000 by the FDIC in the US, £85,000 by the FSCS in the UK and similar schemes elsewhere, per bank.
Updated 22 Oct 2026Source: Standard financial maths (time value of money)Checked by AotobInterest is usually taxable. Penalties vary by bank. Not financial advice.Report an issue