A repo-linked loan uses the Reserve Bank of India’s policy repo rate as its external benchmark. A T-bill-linked loan uses a specified Government of India Treasury-bill yield, such as the three-month or six-month yield published by Financial Benchmarks India Private Ltd (FBIL). Your actual borrowing rate is the benchmark plus the lender’s contractual spread and other terms. Neither benchmark is universally cheaper, and a repo-rate change does not necessarily change your account on the same day.
The practical differences are the reference series, the spread, the reset interval and the date on which your lender makes a new rate effective. Read those four items in the sanction letter or loan agreement before comparing offers.
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What “repo-linked” and “T-bill-linked” mean
Repo-linked loans follow an RBI policy rate
In a repo-linked loan, the reference benchmark is the Reserve Bank of India (RBI) policy repo rate. The repo rate is a monetary-policy rate: it is set as part of the RBI’s policy framework and is separate from the lender’s own margin. A change in the repo rate can therefore move the benchmark used in your loan, but the change reaches your account according to the reset and effective-date clauses in your contract.
“Repo-linked” identifies the benchmark; it does not tell you the final interest rate. Two borrowers with the same repo benchmark can have different rates because their lenders apply different spreads or because their agreements use different reset dates and borrower-specific pricing terms.
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T-bill-linked loans follow a government-security yield
A T-bill-linked loan refers to an eligible Government of India Treasury-bill yield published by FBIL. The government’s banking explanation identifies three-month and six-month Treasury-bill yields among the permitted external benchmarks. The tenor in your agreement matters: a three-month series and a six-month series are different reference values, even though both are described informally as “T-bill linked.”
A Treasury-bill yield is a market rate on a government security, not the RBI policy repo rate. It can move on its own schedule as market yields change. The loan agreement should identify the exact FBIL series, tenor and publication convention rather than relying only on a product label.
Both are external benchmarks, but the label is not enough
RBI’s external-benchmark framework also permits other FBIL-published market rates. The benchmark name on a sales sheet is therefore only a starting point. Confirm the precise reference rate, the tenor where applicable, the spread over it, and the rule used to select a value when a publication falls on a non-business day. The cited public framework does not establish one universal convention for every lender.
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The benchmark is one component of the price. In general form, the rate is:
borrower interest rate = benchmark value + lender spread
Your agreement can define the spread and the conditions under which parts of it may change. RBI says banks may set a spread over the external benchmark. It also says a credit-risk premium may change only when there is a substantial change in the borrower’s credit assessment, in the manner agreed in the contract.
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This distinction explains why two loans advertised with the same benchmark can have different rates. A lender with a higher spread may quote a higher starting rate even when both lenders use the repo rate. Conversely, a lower initial spread does not guarantee a lower cost later if the benchmark series, reset dates or other contractual terms differ.
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Which loans fall under the external-benchmark framework?
The RBI framework applies to specified new floating-rate loans from scheduled commercial banks other than regional rural banks. From 1 October 2019, those banks were required to link new floating-rate personal and retail loans and micro and small enterprise (MSE) loans to an eligible external benchmark. Pricing of medium-enterprise loans was brought under external benchmarking from 1 April 2020. The Department of Financial Services says banks may also offer externally benchmarked loans to other borrower categories.
These dates describe the cited bank framework; they do not prove that every loan from every lender, or every non-bank loan, uses repo or T-bill linkage. Older loans may have been originated under a different pricing regime, and an individual agreement controls the benchmark and reset terms that apply to that account.
| Date | Policy point | Who or what it concerns |
|---|---|---|
| 1 October 2019 | External-benchmark linkage required for new floating-rate personal/retail and MSE loans | Scheduled commercial banks other than regional rural banks |
| 1 April 2020 | External-benchmark pricing extended to medium-enterprise loans | RBI framework for bank lending |
See the RBI publication on monetary policy, regulation and supervision and the Department of Financial Services banking overview for the framework and coverage language.
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How often must the rate reset?
The rule is a minimum frequency
RBI states: “To avert the delays in transmission of monetary policy, banks have been advised to reset the interest rates under external benchmark system at least once in three months.” That is a minimum frequency, not a promise that every benchmark movement will be applied immediately.
A contract can specify a monthly, quarterly or other schedule provided the applicable external-benchmark rate is reset at least once during each three-month period under the RBI guidance. The agreement should state the interval clearly. If it says quarterly, look for the exact quarter-end or review date; “quarterly” alone does not tell you the account-level effective date.
Benchmark publication and account effective date are different events
RBI or FBIL may publish a new benchmark value before your lender changes the rate on your account. The bank might take the value on a stated observation date, calculate the new rate on a later reset date, and make it effective from a date written in your agreement. The public framework cited here does not establish one universal effective date for all borrowers.
This distinction applies to both benchmarks. A repo announcement can occur between your scheduled reset dates. A T-bill yield can move between the dates on which your lender observes the series. Until the contractual reset and effective-date conditions are met, your existing rate may continue to apply.
Why your rate may not change when the repo rate changes
If you expected an immediate change and did not see one, check these explanations in order:
- Your loan may not be repo-linked. A T-bill-linked agreement responds to its specified FBIL Treasury-bill series, not directly to the repo rate. An older loan may use an internal or legacy benchmark instead.
- The change may fall between reset dates. The at-least-once-in-three-months rule does not require a same-day pass-through of every policy move.
- The effective date may be later than the observation date. Your lender may apply the new benchmark from the next contractual reset or another date defined in the agreement.
- The spread can affect the final rate. Even when the benchmark moves, the total rate reflects the spread. A spread change, where contractually permitted, can offset or amplify the benchmark movement.
- Your instalment structure may hide the change temporarily. The contract may change the EMI, the remaining tenor, or another repayment parameter. Check the revised amortisation notice rather than looking only at the instalment amount.
Ask the lender for the benchmark value used, the observation date, the reset date, the effective date and the spread in force. Those details let you reconcile the account statement with the contract without assuming that the repo announcement date is your loan’s reset date.
Repo-linked versus T-bill-linked: the comparison that matters
| Comparison point | Repo-linked loan | T-bill-linked loan | Why it matters |
|---|---|---|---|
| Reference benchmark | RBI policy repo rate | Specified Government of India Treasury-bill yield published by FBIL, such as three-month or six-month | The two series can move differently, so a movement in one is not a guaranteed movement in the other. |
| Spread | Lender’s contractual spread over the repo rate | Lender’s contractual spread over the selected T-bill yield | The spread is part of your actual borrowing rate and can differ by lender and borrower. |
| Reset frequency | External-benchmark rate reset at least once in three months under RBI guidance | Same minimum framework when the loan is covered by the external-benchmark rules | The minimum frequency does not specify a universal calendar date. |
| Effective date | Set by the individual loan agreement | Set by the individual loan agreement | The date a benchmark is published is not necessarily the date your rate changes. |
| Benchmark detail to verify | That the contract actually names the repo rate and states its reset convention | FBIL series, Treasury-bill tenor and the value-selection convention | A generic “T-bill” or “external benchmark” label is not precise enough for a cost comparison. |
Can you say one benchmark is cheaper or better?
Not from the benchmark names alone. The cited material contains no comparative historical series, borrower-specific offers or evidence that repo-linked loans are always cheaper, more stable, faster to transmit cuts, or slower to transmit increases than T-bill-linked loans.
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A fair comparison holds the important contractual variables constant:
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- the same principal, term and repayment structure;
- the exact benchmark series and, for a T-bill loan, the tenor;
- the lender’s starting spread and the rules for changing it;
- the reset interval, observation convention and effective date;
- all applicable fees and other loan terms.
Only then can you compare the quoted rates offered to you. Even a lower starting rate is not a guarantee of a lower lifetime cost because future benchmark values and the contract’s reset mechanics are unknown.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.A practical method for choosing between offers
1. Identify the benchmark unambiguously
Write down the exact words in the pricing clause. For a repo loan, confirm that “repo rate” means the RBI policy repo rate rather than an internal rate with a similar name. For a T-bill loan, record the FBIL series and whether it is the three-month or six-month yield.
2. Convert the quote into a spread
Ask the lender to show the benchmark value used on the quotation date and the spread added to it. This separates a temporary benchmark level from the contractual margin. If the lender gives only a single floating percentage, request the underlying components in writing.
3. Read the spread-change clause
Find the paragraph describing credit-risk premium or other spread adjustments. Confirm what constitutes a substantial change in credit assessment, who can initiate a review, and how notice is provided. RBI’s stated protection for the credit-risk premium is tied to the contractual arrangement, so the wording matters.
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Record the reset interval, the observation date, the source publication and the effective date. A calendar entry for each reset lets you distinguish a missed reset from a benchmark move that occurred outside your observation window.
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5. Compare total contractual cost
Review fees and repayment terms alongside the rate. The benchmark comparison cannot determine the overall cost if one offer has different charges, a different tenor, or a different mechanism for changing EMI and remaining tenor.
How to audit an existing loan statement
- Locate the pricing schedule. Use the sanction letter, loan agreement and later amendments. Find the benchmark name, spread, reset interval and effective-date language.
- Check the benchmark source. For a repo loan, verify the relevant RBI policy rate date. For a T-bill loan, verify the FBIL tenor named in your contract. Do not substitute a different Treasury-bill maturity because its yield is easier to find.
- Compare dates. Put the benchmark publication or policy-change date beside the contractual observation, reset and effective dates.
- Reconstruct the rate. Add the benchmark value used by the lender to the spread stated for that period. Check whether a documented credit-assessment event changed the spread.
- Check the repayment notice. Determine whether the lender changed the EMI, the remaining tenor, or another repayment variable. A rate change may not appear as an identical percentage change in the instalment.
- Escalate a discrepancy in writing. Ask for the calculation sheet, the benchmark source and the contractual clause relied on. Keep the response with your account records.
Questions to ask before signing
- What is the benchmark’s exact legal name and source?
- If the loan is T-bill-linked, is the reference yield three-month or six-month FBIL, and how is the value selected?
- What spread is added today, and under exactly what conditions can it change?
- How often is the rate reset, and what are the observation and effective dates?
- When the benchmark changes, does the lender adjust the EMI, the remaining tenor, or another repayment term?
- How will the lender notify me of a reset and provide the revised calculation?
- Which fees or other contractual terms should I include when comparing this offer with another lender?
Common mistakes and how to avoid them
Confusing the benchmark with the interest rate
“Repo-linked at 6%” or “T-bill-linked at 7%” is incomplete unless the statement identifies the spread and the date. Treat the quoted benchmark and the borrower rate as separate numbers.
Assuming a T-bill label identifies one series
Three-month and six-month Treasury-bill yields are not interchangeable. Keep the tenor in every comparison spreadsheet and email with the lender.
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Expecting same-day transmission
The RBI requirement is at least one reset in three months, not a same-day rule. Use the contract’s effective-date convention to judge whether a reset was timely.
Comparing headline rates from different dates
A benchmark value can change between quotations. Compare each offer using its benchmark value, spread and quote date, or obtain fresh quotations on the same day.
Applying bank rules to every lender
The cited mandate concerns specified loans from scheduled commercial banks other than regional rural banks, with additional coverage described for medium enterprises and possible offerings to other borrower types. Verify the regulatory status and contract of your particular lender instead of assuming universal coverage.
Bottom line for a borrower
Choose based on the complete contract, not on the word “repo” or “T-bill.” Confirm the exact benchmark, spread, reset interval and effective date; then compare the quoted rate and other terms on the same basis. A repo-rate announcement alone cannot tell you when your own rate will change, and the benchmark names alone cannot establish which loan will cost less over time.
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