T-Bills, Fixed Deposits and Singapore Savings Bonds: How They Differ

If you have some cash sitting in your bank account and you want it to work a little harder without taking big risks, you have probably come across three popular options: Treasury bills (T-bills), fixed deposits (FDs) and Singapore Savings Bonds (SSBs). They all promise relatively safe returns, but they behave quite differently once you look under the hood. This guide walks through the T-bills vs fixed deposit vs SSB comparison in plain English so you can see which features matter for your own savings.

The quick version

All three are considered low-risk places to park money in Singapore. The main differences come down to who you are lending to, how long your money is locked up, how easily you can get it back early, and how the interest is calculated. Here is the short summary before we dig into each one.

• T-bills: Short-term government securities sold at a discount, with the return decided by an auction.
• Fixed deposits: A bank product where you agree to leave a sum untouched for a set period in exchange for a stated interest rate.
• Singapore Savings Bonds: A government bond designed for individual savers, with flexible early exit and interest that steps up over time.

Who you are lending to

With T-bills and SSBs, you are effectively lending to the Singapore Government, and these are issued under the Monetary Authority of Singapore (MAS). With a fixed deposit, you are lending to a bank or finance company instead. Bank deposits in Singapore may be covered by the Deposit Insurance Scheme up to a set limit per depositor per institution, so it is worth checking whether your deposit and your bank fall within that coverage. Government securities and bank deposits are both regarded as safe, but the backing is different, and that distinction can matter to some savers.

How long your money is tied up

T-bills in Singapore are short-term instruments, typically issued with tenors of around six months or one year. Fixed deposits come in many tenors, often ranging from one month to a few years, and you choose the length when you place the deposit. Singapore Savings Bonds have a long maximum tenor of up to 10 years, but the key feature is that you are not forced to hold them that long.

Getting your money back early

This is one of the biggest practical differences. With an SSB, you can redeem in any month with no penalty to your principal, and you get back what you put in plus any interest earned so far. That flexibility is a major reason people like SSBs for their emergency cushion.

A fixed deposit usually locks your money for the full tenor. If you break it early, you may lose some or all of the interest, depending on the bank’s terms. A T-bill cannot be redeemed early through the issuer, but it can be sold on the secondary market before maturity. The catch is that the price you get depends on market conditions at the time, so you could receive more or less than you paid.

How the return is worked out

This part trips up a lot of first-time buyers, so it is worth slowing down.

T-bills

T-bills do not pay a regular interest coupon. Instead, you buy them at a discount to their face value and receive the full face value at maturity. The difference is your return, and the effective yield is set through a competitive auction. Because it is an auction, the yield is not known in advance, and it can move from one auction to the next.

Fixed deposits

A fixed deposit pays a stated interest rate that you know upfront. Banks often run promotional rates that require a minimum deposit amount or a specific tenor, and these promotions change frequently. The rate you are quoted at the start is the rate you get if you hold to maturity.

Singapore Savings Bonds

SSBs pay interest every six months, and the rate usually steps up the longer you hold, so the average return improves over time. The rates for each issue are published before you apply, so you can see the full schedule in advance. If you redeem early, you simply earn the lower average that applies to the years you actually held.

How you buy them

T-bills and SSBs are bought through participating banks, usually via internet banking or an investment account, and there are application windows tied to each issue. For SSBs, cash applications are linked to your bank account, and there is a separate route if you want to use certain retirement savings monies, subject to the rules that apply. Fixed deposits are placed directly with a bank, and you can often do this online or at a branch whenever you like, without waiting for an auction.

What about tax?

For individuals in Singapore, interest from approved banks and from Singapore Government securities is generally not taxed, but tax rules have conditions and can change. The Inland Revenue Authority of Singapore (IRAS) is the authority here, so check the current treatment for your situation rather than assuming.

A simple way to compare them

Think about three questions. First, how soon might you need the money? If you want the freedom to pull out any month, an SSB tends to suit that. Second, do you want a rate you know in advance? Fixed deposits and SSBs give you that certainty, while T-bill yields are decided at auction. Third, are you comfortable with application timing? T-bills and SSBs run on issue calendars, whereas fixed deposits can usually be opened on demand.

To put real numbers side by side, Hobo Finance has a free SSB vs T-bill vs FD calculator that lets you plug in an amount and a holding period and see how the options stack up, so you are not doing the maths by hand.

An illustrative example

Say you have 10,000 dollars you will not need for a year. As a purely illustrative example (not a real rate), if a one-year option offered around 3 percent, you would earn roughly 300 dollars over the year before any fees or early-exit effects. The actual figure depends on the live yield, the tenor and whether you hold to maturity, which is exactly why you should check current numbers from the official source before deciding.

You can review the latest details on government securities and Savings Bonds through MAS at https://www.mas.gov.sg/bonds-and-bills.

Disclaimer

This article is general information only and is not financial advice. It does not recommend any specific product or provider, and it does not take your personal circumstances into account. Rates, tenors, ceilings and tax treatment change over time, so always verify the current figures and rules with the official source (MAS, IRAS and your bank) before making any decision.