Non-Competitive Bid vs Competitive Bid (T-Bill/SGS Auction) Singapore
Why Retail Investors Almost Always Bid One Way — And Banks Bid the Other
Last updated: August 2026
A non-competitive bid in a Singapore T-bill or SGS bond auction accepts whatever cut-off yield the auction determines, guaranteeing allotment up to a prescribed allocation limit, while a competitive bid specifies the exact yield the bidder is willing to accept, risking partial or zero allotment if that yield is less attractive than the market-clearing rate.
Not financial advice. All figures for educational reference only. Data as at August 2026.
Table of Contents
What Is Non-Competitive Bid vs Competitive Bid (T-Bill/SGS Auction) Singapore?
How Does It Work in Singapore?
Worked Example
Advantages
Risks and Limitations
Comparison Table
The Bottom Line
Frequently Asked Questions
Key Takeaways
- Retail investors applying for Singapore T-bills or SGS bonds through CDP, ATMs, or internet banking are, by default, submitting non-competitive bids, which guarantee an allotment up to the prescribed non-competitive allocation limit at the auction’s uniform cut-off yield.
- Competitive bids are mainly used by primary dealers, banks, and institutional investors who specify their own desired yield, and only get filled if their bid is at or better than the cut-off yield the auction ultimately determines.
- Singapore uses a uniform-price (single-price) auction format for T-bills and SGS bonds, meaning every successful bidder — competitive or non-competitive — receives the same final cut-off yield, not the yield they individually bid.
- The Monetary Authority of Singapore (MAS) reserves a portion of each T-bill and SGS auction specifically for non-competitive bids, capped at a percentage of the total issuance size, which is why very large retail demand can sometimes result in prorated (reduced) allotments even for non-competitive bidders.
- Understanding this distinction matters mainly for context — the vast majority of individual Singapore retail investors will only ever interact with the non-competitive bid process and never need to submit a competitive bid.
What Is Non-Competitive Bid vs Competitive Bid (T-Bill/SGS Auction) Singapore?
When the Singapore government issues Treasury bills (T-bills) or Singapore Government Securities (SGS) bonds, it does so through a public auction process managed by the Monetary Authority of Singapore, in partnership with primary dealers (major banks). Every investor participating in the auction — whether a retail individual or a large institution — submits a bid, but the type of bid submitted determines how that bid is treated when the auction is settled.
A non-competitive bid is a request to receive an allotment at whatever the final cut-off yield turns out to be, without the bidder specifying a desired yield themselves. This is the default and effectively only practical option available to retail investors applying through CDP, an ATM, or internet banking — you’re agreeing in advance to accept the market-clearing rate, whatever it is, in exchange for a guaranteed (though possibly prorated) allotment. A competitive bid, by contrast, requires the bidder to specify the exact yield they are willing to accept. If their specified yield is at or below the eventual cut-off yield (meaning they were willing to accept a return at least as low as what the market ultimately cleared at), their bid gets filled; if their specified yield is higher than the cut-off (meaning they wanted a better return than the market was willing to give), their bid may be only partially filled or rejected entirely.
How Does It Work in Singapore?
MAS conducts T-bill and SGS bond auctions using a uniform-price (single-price) format, meaning that regardless of whether you bid competitively or non-competitively, every successful bidder in a given auction receives the exact same final yield — the cut-off yield determined by where total demand meets the total amount being issued.
The non-competitive allocation is capped — MAS reserves a specific percentage of each auction’s total issuance size (this percentage can vary by auction) specifically for non-competitive bids. If total non-competitive demand from retail investors exceeds this reserved allocation, MAS prorates every non-competitive bid down proportionally, meaning you may receive less than your full applied amount even though your bid technically “succeeded.”
Competitive bids fill the remainder of the auction after the non-competitive allocation is set aside, ranked from the lowest yield bid (most aggressive, most willing to accept a low return) to the highest, until the total issuance amount is fully allocated — the yield at which the very last competitive bid is filled becomes the cut-off yield that everyone, competitive and non-competitive alike, ultimately receives.
Retail access to competitive bidding is technically possible through certain full-service brokers or by applying via a bank counter with a specified yield, but in practice the overwhelming majority of individual Singapore retail investors use the standard non-competitive route via CDP, ATM, or internet banking applications for both T-bills and SSBs (though Singapore Savings Bonds use a different, simpler non-auction application process entirely, not a competitive/non-competitive bid structure).
Worked Example
In a hypothetical 6-month T-bill auction with S$5.6 billion on offer, MAS reserves, say, 40% (S$2.24 billion) for non-competitive bids. If total non-competitive applications from retail investors come in at S$2.8 billion — above the reserved S$2.24 billion — every non-competitive applicant receives a prorated allotment of roughly 80% of what they applied for (S$2.24bn / S$2.8bn), even though their bid was guaranteed to be filled in principle. Meanwhile, competitive bidders (mostly banks) fill the remaining S$3.36 billion, ranked from the lowest yield bid upward, until the full S$5.6 billion issuance is allocated; the yield of the very last competitive bid accepted becomes the auction’s cut-off yield, which is the same yield every non-competitive bidder also receives on their (possibly prorated) allotment.
Advantages
- Non-competitive bidding removes the guesswork for retail investors — you don’t need to predict or specify a yield; you simply receive whatever the market determines, with your allotment guaranteed up to the reserved limit (before proration).
- Both bid types ultimately receive the identical cut-off yield under Singapore’s uniform-price auction format, so a retail non-competitive bidder is never disadvantaged in terms of the rate received compared to a competitive bidder in the same auction.
- Competitive bidding allows institutions to express a specific view on where yields should clear, which contributes to accurate, efficient price discovery for the entire auction, indirectly benefiting all participants including retail non-competitive bidders.
- The reserved non-competitive allocation ensures retail investors aren’t crowded out entirely by large institutional competitive demand, guaranteeing at least a meaningful portion of every T-bill and SGS auction is set aside specifically for individual investors.
Risks and Limitations
- Proration can mean receiving less than your full applied amount — in popular auctions with high retail demand, non-competitive bidders have historically received well below 100% of their applied sum, meaning your actual invested amount and locked-in maturity value may be smaller than planned.
- You cannot know the exact yield in advance when submitting a non-competitive bid — you’re committing your funds before knowing precisely what return you’ll receive, unlike a fixed deposit where the rate is quoted to you upfront.
- Competitive bidders risk being shut out entirely if their specified yield is less attractive than the eventual cut-off — a competitive bid is not a guarantee of any allotment at all, unlike the non-competitive route.
- Funds are typically locked from application until refund/allotment is processed, meaning any amount not ultimately allotted (due to proration) is refunded after the auction settles, not before — so your cash is briefly tied up regardless of your final allotment size.
- Retail investors generally cannot access true competitive bidding through standard CDP/ATM/internet banking channels, so this entire distinction is mostly informational context rather than an actual choice most individuals will ever make.
Comparison Table
| Feature | Non-Competitive Bid | Competitive Bid |
|---|---|---|
| Who typically uses it | Retail investors | Banks, primary dealers, institutions |
| Yield specified by bidder? | No — accepts cut-off yield | Yes — bidder states desired yield |
| Allotment certainty | Guaranteed (subject to proration if oversubscribed) | Not guaranteed — depends on bid vs cut-off yield |
| Final yield received | Same cut-off yield as everyone else | Same cut-off yield as everyone else (if filled) |
| Typical access method | CDP, ATM, internet banking | Primary dealer / institutional channels |
The Bottom Line
For nearly all Singapore retail investors, T-bill and SGS auctions are a non-competitive-bid-only experience by default — you accept whatever cut-off yield the market determines in exchange for a guaranteed (though possibly prorated) allotment, while competitive bidding remains the domain of banks and institutions specifying their own desired yields to help set that same cut-off rate.
Frequently Asked Questions
Can a retail investor in Singapore submit a competitive bid for a T-bill or SGS bond?
In practice, almost all individual retail applications through CDP, ATMs, or internet banking are treated as non-competitive bids by default. True competitive bidding is generally only accessible through primary dealer or institutional channels, not the standard retail application process.
Why did I only receive a partial allotment on a T-bill I applied for?
This is proration — if total non-competitive demand from all retail applicants exceeds the portion of the auction reserved for non-competitive bids, MAS scales every non-competitive allotment down proportionally, so you may receive less than the full amount you applied for even though your bid was accepted in principle.
Do competitive and non-competitive bidders receive different interest rates?
No — Singapore uses a uniform-price (single-price) auction format, so every successful bidder, whether competitive or non-competitive, receives the exact same final cut-off yield on their allotment for that specific auction.
Is the Singapore Savings Bond (SSB) application process the same as the T-bill competitive/non-competitive auction?
No. SSBs use a separate, simpler non-auction application process where the interest rate schedule is pre-announced before you apply, and allotment is prorated if oversubscribed, but there is no competitive/non-competitive bid distinction the way there is for T-bills and SGS bonds.
What happens to the unallotted portion of my T-bill application if I'm prorated?
The unallotted (excess) amount is refunded back to your original application source — your CDP-linked bank account, or your bank account if you applied via ATM/internet banking — typically shortly after the auction results are announced.
Where can I check the results of a T-bill or SGS auction, including the cut-off yield?
Auction results, including the cut-off yield and the level of subscription, are published by the Monetary Authority of Singapore and the Singapore Government Securities website shortly after each auction closes.