Treasury Bills (T-Bills) Singapore: Parking Cash at Government-Backed Short-Term Yields
How 6-month and 1-year Singapore T-Bills work, and why they became a retail favourite.
Singapore Treasury Bills (T-Bills) are short-term Singapore Government Securities with maturities of 6 months or 1 year, sold at a discount to their face value through regular MAS auctions, giving investors a return equal to the difference between the discounted purchase price and the face value received at maturity.
Not financial advice. All figures for educational reference only. Data as at October 2026. Last updated: October 2026.
Table of Contents
Key Takeaways
- Singapore T-Bills are issued by the government with 6-month or 1-year tenors and are sold at a discount rather than paying periodic coupons.
- The return an investor earns is the ‘cut-off yield’ set at each auction, determined by competitive and non-competitive bids.
- Retail investors apply via CDP, ATMs, or internet/mobile banking with a minimum investment of S$1,000 and in multiples of S$1,000 thereafter.
- T-Bills are backed by the full faith and credit of the Singapore Government, carrying effectively the same credit risk as other SGS instruments.
- Unlike Singapore Savings Bonds, T-Bills cannot be redeemed early at par on demand; an investor needing cash before maturity must sell on the secondary market, with no guarantee of getting back the full amount.
What Are Treasury Bills?
Treasury Bills are one of three main types of Singapore Government Securities, alongside longer-dated SGS bonds and the retail-focused Singapore Savings Bonds (SSBs). Because T-Bills are short-dated (6 or 12 months) and sold at a discount rather than paying coupons, they behave more like a fixed-term deposit than a traditional bond: an investor pays less than S$1,000 per S$1,000 face value, and receives the full S$1,000 at maturity, with the difference being the return. The Monetary Authority of Singapore (MAS), acting as agent for the government, conducts regular auctions — roughly fortnightly for the 6-month bill and monthly for the 1-year bill.
How Do T-Bills Work in Singapore?
At each auction, institutional investors submit competitive bids specifying a yield, while retail investors typically submit non-competitive bids, agreeing to accept whatever cut-off yield the auction determines. MAS allocates bills to the lowest-yield (most expensive) bids first, working up until the issue size is exhausted; the yield at which the issue size is exhausted becomes the ‘cut-off yield’ that all non-competitive (retail) bidders receive. Retail investors can apply through CDP’s internet/mobile applications, ATMs or internet banking with participating banks, with a S$1,000 minimum and allocation in a ‘haircut’ basis if the retail tranche is oversubscribed.
| Feature | 6-Month T-Bill | 1-Year T-Bill |
|---|---|---|
| Auction frequency | Roughly every 2 weeks | Roughly monthly |
| Minimum investment | S$1,000 | S$1,000 |
| Payout structure | Discount to face value, lump sum at maturity | Discount to face value, lump sum at maturity |
| Typical use case | Very short-term cash parking | Slightly longer cash parking, often marginally higher yield |
Source: MAS Singapore Government Securities auction calendar
T-Bill Example
Suppose the 6-month T-Bill auction clears at a cut-off yield of 3.00% per annum. An investor applying for S$10,000 face value would pay approximately S$9,852 upfront (reflecting the discount for a 6-month, semi-annual-equivalent yield), and receive the full S$10,000 at maturity six months later — a gain of roughly S$148, or about 1.5% over the six-month period, annualising to the quoted 3.00% yield. The exact discounted price depends on the precise day-count convention MAS uses, but this illustrates the basic mechanics: pay less now, receive the face value later, with the gap being your return.
Advantages of T-Bills
- Backed by the Singapore Government. T-Bills carry effectively the lowest credit risk available to SGD investors, similar to SSBs and SGS bonds.
- Short commitment period. At 6 or 12 months, T-Bills suit investors who want a government-backed yield without locking up cash for years.
- Competitive yields versus bank deposits. During periods of elevated interest rates, T-Bill cut-off yields have frequently exceeded ordinary bank fixed deposit rates.
- No cap on investment amount. Unlike SSBs, which cap individual holdings at S$200,000, T-Bills have no such personal limit.
Risks and Limitations
- No early redemption at par. An investor needing the cash before maturity must sell on the secondary market through a broker, potentially at a loss if yields have risen since purchase.
- Reinvestment risk at maturity. If interest rates have fallen by the time a T-Bill matures, reinvesting the proceeds may only be possible at a lower yield.
- Funds are locked for the full tenor if held to maturity. Unlike a savings account, T-Bill funds are not available on demand.
- Cut-off yield is not known in advance. Retail investors bidding non-competitively accept whatever yield the auction clears at, which can be lower than anticipated if demand is unexpectedly strong.
T-Bills vs Singapore Savings Bonds
T-Bills and Singapore Savings Bonds (SSBs) are both retail-accessible SGS products but serve different needs.
| Feature | T-Bills | Singapore Savings Bonds (SSB) |
|---|---|---|
| Tenor | 6 months or 1 year | Up to 10 years, redeemable any month |
| Early redemption | Not at par; must sell on secondary market | Yes, at par, any month, with accrued interest |
| Individual holding cap | None | S$200,000 per individual |
| Payout style | Discount, lump sum at maturity | Step-up coupons paid every 6 months |
Source: MAS, Singapore Savings Bonds website
The Bottom Line
For Singapore investors parking short-term cash, T-Bills offer a simple, government-backed way to earn a market-determined yield for 6 or 12 months without an investment cap, at the cost of giving up the early-redemption flexibility that Singapore Savings Bonds provide.
Frequently Asked Questions
How do I buy Singapore T-Bills?
Retail investors can apply through CDP internet/mobile applications, ATMs, or internet/mobile banking with participating banks, submitting a non-competitive bid with a minimum of S$1,000.
What is the minimum investment for a T-Bill?
The minimum is S$1,000, with applications in multiples of S$1,000 thereafter.
Can I withdraw my T-Bill investment before maturity?
Not at par. A holder who needs cash before maturity must sell the T-Bill on the secondary market through a broker, and the price received depends on prevailing market yields at the time.
Are T-Bills safer than fixed deposits?
T-Bills are backed by the Singapore Government and carry very low credit risk, broadly comparable to the deposit insurance-backed safety of bank fixed deposits, though the mechanics and liquidity differ.
What is the difference between a 6-month and 1-year T-Bill?
They differ mainly in tenor and auction frequency; the 1-year bill locks in a yield for a longer period, which can be an advantage or disadvantage depending on the direction interest rates move after purchase.