Capital guaranteed investments promise one thing: you get your principal back. In Singapore for 2026 the genuinely guaranteed shortlist is small, and the headline rates are lower than the era of 4% T-bills two years ago. As of June 2026 the 6-month T-bill cleared at 1.47% p.a., the July Singapore Savings Bond pays 1.46% in year one, and the best fixed deposit promos sit near 1.50% p.a. The catch most articles skip is that the guarantee depends on who is making it and whether you hold to maturity. A government bond sold early can lose money. An endowment surrendered in year one can hand back less than you put in. This guide ranks the real options by issuer strength, shows the current numbers, and flags exactly where the guarantee stops applying.
A capital guarantee is a promise that you get back at least the principal you put in. The strength of that promise depends entirely on who issues it, and that distinction decides everything. Singapore Government Securities are backed by a sovereign with an AAA credit rating, so the guarantee is as strong as it gets. Bank fixed deposits lean on the SDIC deposit insurance scheme, which covers up to S$100,000 per depositor per bank if the bank fails. Insurance savings plans rely on the insurer and the Policy Owners' Protection Scheme. Each layer carries slightly more risk, which is why the higher-paying options are rarely the most ironclad.
There is a second condition almost everyone misses. Most guarantees only hold if you keep the rules. A Singapore Government Bond returns your full face value at maturity, but if you sell it on the secondary market when rates have risen, you can take a loss. An endowment guarantees your capital from a certain policy year, not from day one. So 'guaranteed' is really 'guaranteed, if you hold it the right way for the right length of time'.
Before comparing rates, run anything that promises high guaranteed returns through the MAS Financial Institutions Directory and the MAS Investor Alert List. A legitimate capital guaranteed product in Singapore in 2026 pays roughly 1% to 3.5% p.a. Anyone promising 8% to 12% 'guaranteed' is selling risk dressed up as safety.
Here are the instruments that genuinely return your principal, with rates verified against the issuer as of June 2026. Rates on auction-based and promotional products move constantly, so treat these as a current snapshot, not a fixed quote.
| Instrument | Backed by | Indicative rate p.a. | Minimum | Tenor | Get principal back early? |
|---|---|---|---|---|---|
| 6-month T-bill | SG Government (AAA) | 1.47% (23 Jun 2026 auction) | S$1,000 | 6 months / 1 year | Only via secondary sale, price varies |
| Singapore Savings Bond | SG Government (AAA) | 1.46% yr 1, 2.11% 10-yr avg (Jul 2026) | S$500 | Up to 10 years | Yes, any month, no capital loss |
| SGS Bonds | SG Government (AAA) | ~1.6% to 2.2% (June 2026) | S$1,000 | 2 to 50 years | Only via secondary sale, price varies |
| Fixed deposit | Bank + SDIC to S$100k | Up to ~1.50% (12-mth promo) | S$500 to S$20,000 | 1 to 36 months | Yes, usually with lost interest |
| CPF top-up (SA/RA) | SG Government | 4.0% floor + up to 1% extra | S$1 | Until age 65 | No, locked in CPF |
| Short-term endowment | Insurer + PPF Scheme | ~1.7% to 3.5% guaranteed | S$5,000 to S$10,000 | 2 to 3 years | Not in full early years |
If 'guaranteed' has to mean guaranteed, start with what the Singapore Government issues. The sovereign holds an AAA rating from all three major agencies, so the principal promise here carries the lowest counterparty risk available to a retail investor.
Treasury bills are 6-month or 1-year zero-coupon securities sold at a discount to face value. You receive the full face value at maturity, and the difference is your return. The 6-month T-bill issued on 23 June 2026 (BS26112T) cleared at a 1.47% p.a. cut-off yield. The minimum is S$1,000 and you bid by auction, so the rate is not known until the auction closes. Hold to maturity and your capital is fully returned by the government; sell early on the secondary market and the price depends on where rates have moved.
Longer-dated Singapore Government Securities run from 2 to 50 years and pay a fixed coupon every six months. Yields across the curve sat in roughly the 1.6% to 2.2% range in June 2026. The capital guarantee applies only at maturity. A 10-year bond is fully repaid in year 10, but selling in year three means accepting the prevailing market price, which can be below what you paid.
The Singapore Savings Bond is the most flexible government option and arguably the cleanest capital guarantee in the market. The July 2026 issue (SBJUL26) pays 1.46% in the first year and steps up to a 2.11% average annual return if held the full 10 years. The minimum is S$500, the cap is S$200,000 per person, and the standout feature is liquidity: you can redeem in any month with no capital loss, just a S$2 transaction fee. That makes the SSB the rare instrument that is both capital guaranteed and genuinely liquid. Our full Singapore Savings Bonds guide walks through the application timing and allotment quirks, and the T-bill vs SSB comparison shows when each one wins.
Fixed deposits lock a sum at a set rate for a fixed term. The principal is protected by the Singapore Deposit Insurance Corporation up to S$100,000 per depositor per bank, a limit raised from S$75,000 on 1 April 2024. That covers the overwhelming majority of retail savers, but if you park S$300,000 in one bank, only the first S$100,000 is insured if that bank fails.
Promotional 12-month rates in June 2026 sat near 1.50% p.a. at the most competitive banks, well down from the 3% to 4% peak of 2023. Minimums commonly range from S$500 to S$20,000, and the best rates usually require fresh funds rather than money already sitting with the bank. Break the deposit early and you typically forfeit some or all of the accrued interest, though your principal stays intact. Compare current promos in our best fixed deposit rates roundup, and if you are weighing locking money up against keeping it liquid, the fixed deposit vs investing calculator puts numbers to the trade-off.
No retail product in Singapore beats a CPF top-up on guaranteed rate. The Special, Retirement and MediSave Accounts pay a floor of 4.0% p.a., and the first S$60,000 of combined CPF balances earns an extra 1% (capped at S$20,000 from the Ordinary Account), pushing the effective rate as high as 5% for younger members. The Ordinary Account pays a 2.5% floor. These rates are set by the government, so the guarantee is sovereign-grade.
The price is liquidity. Money topped up under the Retirement Sum Topping-Up scheme cannot be withdrawn before payouts begin around age 65. In exchange, cash top-ups to your own or a loved one's account qualify for up to S$8,000 in tax relief each, per year. Treat a CPF top-up as a retirement allocation rather than an emergency fund. See the RSTU explainer for the relief mechanics and the SRS vs CPF top-up comparison if you are deciding which tax-relief route fits your situation.
Short-term endowment plans from insurers package a guaranteed return with a small element of insurance. Recent two to three-year plans have advertised guaranteed yields of roughly 1.7% to 3.5% p.a., and capital is protected by the Policy Owners' Protection Scheme up to S$100,000 of insured liabilities. The trap is the surrender table: cash out in the early policy years and you can receive less than you paid in. The capital guarantee on most plans only kicks in from a specific year onward, so read the benefit illustration before you assume your principal is safe from day one. Our breakdown of a capital guaranteed endowment shows how to read one of these tables.
Then there are products marketed as 'guaranteed' that are not strictly capital guaranteed. Robo cash management accounts and money market funds are low-risk and rarely lose money, but they invest in short-term bonds and are not covered by deposit insurance. Some providers offer a contractual 'guaranteed' tranche where a fixed rate is locked for a set term, but the guarantee rests on the underlying institution, not on SDIC. Useful tools, lower-risk than equities, but a notch below a government bond on the safety ladder.
Match the instrument to how long you can lock the money and how strong you need the guarantee to be.
Not entirely. Government securities held to maturity and SDIC-insured deposits up to S$100,000 are about as safe as it gets, but selling a bond early can cause a capital loss, and surrendering an endowment in its first years can return less than you paid. The guarantee depends on holding the product the way the terms require.
A CPF Special or Retirement Account top-up pays a 4.0% p.a. floor, plus up to 1% extra interest on your first S$60,000, which is the highest guaranteed rate available to retail savers in 2026. The trade-off is that the money is locked in CPF until payouts begin around age 65.
Yes, up to S$100,000 per depositor per bank under the SDIC deposit insurance scheme, a limit raised from S$75,000 on 1 April 2024. Anything above that in a single bank is not insured, so spreading large balances across multiple banks keeps every dollar covered.
For most savers, yes, on flexibility. An SSB is backed by the AAA-rated government and can be redeemed in any month with no capital loss, only a S$2 fee. A fixed deposit usually forfeits interest if you break it early, though your principal stays intact. The SSB's 10-year average yield of 2.11% in July 2026 also edged the best deposit promos of around 1.50%.
This is general financial information for Singapore, not personal financial advice. Figures change — verify current rates against the official sources above before acting. See our full disclaimer.