Fixed Deposit Calculator Singapore
Use this free fixed deposit (FD) calculator to work out how much interest you’ll earn in Singapore. Enter your deposit amount, tenure and interest rate, and you’ll see your interest and total payout at maturity.
Not sure what rate to use? Scroll down to the comparison tool, which ranks Singapore banks and finance companies by the interest they’d pay on your amount and tenure. For the latest offers, see the current Singapore fixed deposit promotions.
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Fixed deposit interest calculator
Enter your deposit amount, period in months and the provider’s rate per year (% p.a.).
Estimated simple interest for the full period. The real payout depends on the bank.
Not sure which rate to use? Compare banks and finance companies below.
Which provider pays the most for your deposit?
Enter your amount and choose a tenure to see banks and finance companies ranked by estimated interest. Rates are for the full tenure, so you can compare like for like.
How to calculate fixed deposit interest?
Most Singapore fixed deposits pay simple interest. The formula is:
Interest = Deposit × Rate (%) × Months ÷ 1,200
- Deposit amount: the sum you place, in S$.
- Tenure: how many months you lock it in.
- Interest rate: the bank’s annual rate (% p.a.).
Example: S$20,000 for 6 months at 1.80% p.a. earns S$20,000 × 1.80 × 6 ÷ 1,200 = S$180. Your total at maturity is S$20,180.
Dividing by 1,200 turns the yearly percentage into a monthly fraction (12 months × 100).
How to calculate fixed deposit interest rate
If you already know the interest earned and want the rate, reverse the formula:
Rate (% p.a.) = Interest × 1,200 ÷ (Deposit × Months)
Example: You earned S$180 on S$20,000 over 6 months: 180 × 1,200 ÷ (20,000 × 6) = 1.80% p.a.
Use this to check what a promotion really pays, or to compare offers with different tenures.
Fixed deposit calculator FAQs
Is this FD calculator accurate for Singapore banks?
It gives a close estimate using simple interest, which is how most Singapore FDs are quoted. Your actual payout can differ depending on whether interest is paid monthly, annually or at maturity, early withdrawal terms, and the rate at renewal. Always confirm with the bank.
What is the difference between a bank and a finance company FD?
Finance companies often advertise higher FD rates than banks, but you should check each one’s terms, minimum deposit and deposit insurance coverage.
Can I use this calculator for any tenure?
Yes. Enter the number of months. For a 12-month FD, enter 12. For 18 months, enter 18.
Want to see the effect of reinvesting your interest? Try the compound interest calculator or the basic interest calculator.
Other calculators: Basic Interest, Compound Interest, Balance Transfer Admin Fee.