Fixed deposit calculator Singapore

Work out the interest on a fixed deposit, compare up to 4 offers on the same yearly basis, see what breaking it early costs you, and check it against the latest T-bill and Singapore Savings Bond rates from MAS.

Calculator

Your deposit and offers

S$
% a year
% a year
% a year
% a year

Type the rate from the bank's own page or letter. Leave a rate at 0 to skip that offer.

months
% a year

Many banks pay nothing. Check your terms.

S$

Best offer interest

$180.00

Offer 1: 1.80% for 6 months

Back at maturity

$20,180.00

deposit plus interest

Yearly yield if renewed

1.81%

same rate for 12 months

Your offers compared

OfferRateTenorInterestYearly yield
Offer 11.80%6 mo$180.001.81%
Offer 21.70%12 mo$340.001.70%

Yearly yield assumes you renew at the same rate until 12 months are up, so a short tenor and a long one compare fairly. Renewal rates are not promised.

Break Offer 1 after 3 months and you get back $20,000.00. Held to the end it pays $180.00; for the months you kept it, the full rate would have paid $90.00, so breaking it costs you $90.00.

Against T-bills and Savings Bonds

Latest figures from MAS. Interest on S$ amounts below uses the same deposit for 12 months.

OptionRate12 months on your deposit
Your best FD (Offer 1)1.81%$361.62
6-month T-bill, 8 Oct 20261.90%$380.00
1-year T-bill, 23 Jul 20261.68%$336.00
SSB GX26110X, year 11.67%$334.00
SSB GX26110X, 10-year average2.45%if held 10 years

Source: MAS. T-bill cut-off yields and SSB rates as published by MAS. A T-bill is bought at a discount, so its yield is close to, not exactly, the simple rate. SSBs can be redeemed in any month with no penalty; T-bills cannot be sold back to MAS early.

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How fixed deposit interest is worked out

Banks in Singapore pay simple interest on a fixed deposit: amount x yearly rate x months / 12. You get the interest in one sum when the term ends.

  • A higher headline rate on a short tenor is only worth it if you can renew at a similar rate. Compare on the yearly yield.
  • Many promotional rates need fresh funds, a minimum amount, or a linked account. Read the bank's terms before you place the money.
  • Withdraw before maturity and you may get no interest or part of it, and you may pay a fee, so you can get back less than you put in (MoneySense).

Worked example

You have S$20,000. Offer 1 pays 1.80% for 6 months: S$20,000 x 1.80% x 6 / 12 = S$180. Renew it once at the same rate and the year earns about 1.81%. Offer 2 pays 1.70% for 12 months: S$340 for the year. Offer 1 wins if the rate holds when it renews.

If you break Offer 1 after 3 months and the bank pays no interest on early withdrawal, you get S$20,000 back. The S$90 you would have earned for those 3 months is gone.

Frequently asked questions

Banks pay simple interest: amount x yearly rate x months / 12, paid at maturity. S$10,000 at 3.2% for 12 months earns S$320. S$50,000 at 2% for 6 months earns S$500.

Turn both into a yearly yield. A 3-month deposit at 2% renewed four times at the same rate earns about 2.015% for the year. That only holds if the renewal rate stays the same, which the bank does not promise.

MoneySense warns that you may get no interest or only part of it, and some banks charge a fee. With a fee and no interest you can get back less than you deposited. Check the early withdrawal terms before you place the money.

Singapore dollar fixed deposits with SDIC member banks and finance companies are insured up to S$100,000 per depositor per bank, added together with your savings and current accounts there. The limit rose from S$75,000 on 1 Apr 2024.

Compare the yearly yield of your fixed deposit against the latest 6-month T-bill cut-off yield and the 1-year T-bill on this page, both from MAS. T-bills are auctioned, so the yield is only known after the auction, and you cannot sell a T-bill back to MAS early.

An SSB pays a rate that steps up each year and can be redeemed in any month with no penalty. Its year 1 rate is often below a fixed deposit's, but it has no lock-in. This page shows the latest SSB year 1 rate and 10-year average from MAS.

No. IRAS does not tax interest on deposits with approved banks and licensed finance companies in Singapore. Interest from non-approved banks or loans to others is taxable.

Rates change often and promotions come with conditions such as fresh funds or a minimum amount. Type the rate from the bank's own page or letter so the result matches the offer you can actually get.

How we calculate this

  1. Banks in Singapore pay simple interest on a fixed deposit: amount x yearly rate x months / 12, paid in one sum when the term ends. Source: MoneySense: understanding bank accounts, fixed deposits and early withdrawal
  2. To compare a short tenor with a long one, we turn each offer into a yearly yield, assuming you renew it at the same rate until 12 months are up: (1 + rate x months / 1,200)^(12 / months) - 1. Offers are ranked by that yield.
  3. Breaking early: the bank pays the early rate you enter, often 0%, for the months you held the deposit, less any fee. What it costs you is what the full rate would have paid for those months, minus what you get. Source: MoneySense: understanding bank accounts, fixed deposits and early withdrawal
  4. SDIC insures Singapore dollar deposits up to S$100,000 per depositor per bank, with savings and fixed deposits at that bank added together. The calculator flags any amount above that. Source: SDIC: Deposit Insurance Scheme, S$100,000 per depositor per bank from 1 Apr 2024
  5. The T-bill and Singapore Savings Bond rows use the latest MAS results, applied to your deposit for 12 months. Source: MAS: T-bill auction results and Singapore Savings Bond rates (via our rates page)

Rounding

Interest is shown to the cent and yields to two decimal places, with no rounding inside the sum.

Worked example: the default case

  1. You have S$20,000. Offer 1 pays 1.80% for 6 months and Offer 2 pays 1.70% for 12 months.
  2. Offer 1: S$20,000 x 1.80% x 6 / 12 = S$180.00, so S$20,180.00 comes back at maturity. Renewed once at the same rate: (1 + 0.009)^2 - 1 = 1.81% a year.
  3. Offer 2: S$20,000 x 1.70% x 12 / 12 = S$340.00, a yearly yield of 1.70%.
  4. Offer 1 ranks first on yearly yield, as long as the rate holds when it renews.
  5. Break Offer 1 after 3 months at an early rate of 0% with no fee and you get back S$20,000.00. The S$90.00 those 3 months would have earned is gone.
  6. Against MAS: the 6-month T-bill auctioned on 8 Oct 2026 cut off at 1.90%, which on S$20,000 for 12 months is S$380.00.

What this calculator does not cover

  • Promotional conditions such as fresh funds, minimum amounts or a linked account.
  • The rate on renewal, which banks do not promise.
  • Foreign currency deposits, which SDIC does not insure.
  • T-bill pricing. A T-bill is bought at a discount, so its yield differs slightly from a simple rate.

Keep exploring

These calculators provide general estimates for educational purposes only and are not personalised financial advice. Results may rely on rates and rules that change over time, so verify against official sources (IRAS, CPF Board, HDB, MAS) or consult a licensed financial adviser before making decisions.

Junxiong-WFG Organisation is an authorised representative of AIA Financial Advisers Private Limited (Reg. No. 201715016G).