What are Treasury Bills
A treasury bill is a short-term debt security issued by the Union government and auctioned through the Reserve Bank of India. It has an original maturity below one year, carries no periodic coupon, and is issued below its face value. The holder receives the face value on maturity, making the price difference the investment return. These money-market securities are commonly called T bills. State governments issue State Development Loans instead of this instrument.
Why Does the Government Issue Treasury Bills
Government receipts and payments do not arrive in equal amounts every week. Tax collections may reach the exchequer after expenditure has fallen due. Short-dated borrowing helps the Union government cover part of that timing gap through the market without issuing long-tenure debt for each temporary requirement.
These issues form part of the government borrowing program and bring funds into the Consolidated Fund under the applicable budget authority. The chosen tenor lets debt managers distribute repayment dates across the financial year. Auction-based borrowing also records market demand at each sale instead of fixing a permanent borrowing price. Debt managers can compare demand across tenors and decide how short borrowing complements dated securities. This division avoids placing an entire year’s financing need at a single maturity point.
The RBI conducts each auction as the government’s debt manager, but the repayment obligation belongs to the Union government. Cash Management Bills address temporary cash-flow mismatches with maturities below 91 days. They are separate instruments, even though their discount structure resembles a treasury Bill.
Types of Treasury Bills
The RBI’s government-securities primer recognizes three tenors. An auction calendar gives indicative dates and amounts, followed by an issue-specific notification. The notified amount can change when borrowing requirements are revised. Actual auction dates remain subject to holidays, market conditions, and borrowing revisions, making the latest notification decisive for an application.
91-Day Treasury Bills
A 91-day issue has the shortest standard tenure in this group. It can suit an investor whose surplus cash has a near-term use, provided the maturity date matches that requirement. Its auction price reflects bids received for that sale. Comparing its quoted return with a longer bill requires an annualized yield rather than the rupee discount alone.
182-Day Treasury Bills
A 182-day issue commits funds for roughly half a year. The added time can expose its secondary-market price to a larger change when short-term rates move, compared with an otherwise similar bill nearer maturity. No rule requires this tenor to deliver a higher return than the 91-day security. Demand, liquidity conditions, and rate expectations influence each auction independently.
364-Day Treasury Bills
A 364-day issue carries the longest standard maturity among current bills. It remains a money-market instrument because its original term is below one year. Investors can compare its return with shorter issues through the yield curve, after allowing for the different maturity dates. A longer commitment may be unsuitable when the invested cash has an earlier operational use.
Features of Treasury Bills
Discount Issue and Face-Value Redemption
This security follows a zero-coupon bond structure. An investor pays the auction or market price and receives the face value at redemption. For example, a purchase at ₹98.20 against a ₹100 face value creates a ₹1.80 difference at maturity. The figure represents the gross rupee return before any transaction cost or applicable tax consequence.
Market-Determined Auction Price
Competitive bidders quote a price or yield within the auction rules. Eligible retail investors can submit non-competitive bids through RBI Retail Direct. Their allotment uses the weighted average price of successful competitive bids, which becomes known after the auction closes. A refundable markup covers the price uncertainty when the application is funded. No retail applicant selects a price under this route.
Actual/365 Yield Convention
The annualized return depends on the purchase price, face value, and exact days remaining. RBI applies the actual/365 money-market convention for the calculation. A larger discount raises the implied yield when maturity and face value remain unchanged. Investment analysis should use the annualized figure when comparing bills with different tenors, since equal rupee discounts can produce unequal returns.
Sovereign Obligation with Market Exposure
RBI classifies these government securities as free from credit risk, reflecting the Union government’s payment commitment to holders. Price risk remains relevant before maturity. If market yields rise, an existing bill may need to be sold below its earlier purchase price. The eventual result depends on the sale value rather than the amount receivable at scheduled redemption.
Electronic Holding and Tradability
Government securities are held in electronic form through the permitted account structure. Retail Direct investors can bid in primary auctions and access the NDS-OM secondary-market facility. Tradability provides an exit route, but it does not promise an immediate buyer at the required price. Bid depth, dealing conditions, and the remaining term determine practical liquidity risk.
Known Maturity Value
The face value due at maturity is stated before purchase. Once the auction price is established, a holder who keeps the security until redemption can identify the nominal rupee difference. Future inflation remains unknown, leaving the purchasing-power result uncertain. A yield spread between tenors may reflect rate expectations and market demand rather than a change in the issuer’s repayment obligation.
Advantages of Government Treasury Bills
- The Union government’s domestic-currency payment commitment gives these securities the strongest available credit standing in the local debt market.
- Three standard maturities allow an investor to select a date that corresponds with a planned cash requirement.
- Discount pricing removes interim coupon collection and the associated need to reinvest periodic interest before maturity.
- RBI auction notices, results, and indicative calendars provide a documented process for issue terms and price discovery.
- Retail Direct permits eligible individuals to participate in primary auctions without quoting a competitive price.
- Adding short sovereign securities can reduce issuer concentration within a granular portfolio that contains private debt exposure.
- Electronic records remove paper-certificate storage and physical-transfer procedures.
Disadvantages of Treasury Bills
- Short sovereign instruments may deliver a lower return than investments carrying longer duration, weaker credit, or equity exposure.
- A holder receives no periodic cash income because the entire price difference is realized at sale or redemption.
- Inflation can reduce the real value of the maturity proceeds, even when the nominal amount is paid in full.
- Frequent maturities create reinvestment risk because a replacement security may offer a lower auction yield.
- An urgent secondary-market sale can produce a loss when yields rise or buying interest is limited.
- Non-competitive applicants do not know the final allotment price when submitting a primary-auction bid through Retail Direct.
- Transaction or payment-gateway charges can reduce the net return under some access arrangements.
