Both the variable-rate reverse repo (VRRR) and the Standing Deposit Facility (SDF) absorb surplus liquidity from banks. They are different tools, not competing replacements: the SDF is a standing deposit facility at a rate set within the Liquidity Adjustment Facility (LAF) corridor, while a VRRR absorbs funds through auctions at a variable rate and for a tenor announced by the Reserve Bank of India (RBI). Which tool absorbs more depends on liquidity conditions and the RBI’s operational choices; neither always dominates.
The practical distinction is access and operation. An eligible bank can use the SDF under its terms, whereas a VRRR requires participation in a particular auction and absorption is limited to placements accepted under that auction’s design. The SDF’s rate is a standing corridor rate; a VRRR’s rate emerges through the auction. Both can be used during the same period, and neither instrument has a permanently fixed share of total absorption.
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What is the difference between VRRR and SDF?
The key distinction is how banks place surplus funds with the RBI. Under the SDF, an eligible bank can use a standing facility under its terms. Under a VRRR, banks bid in an RBI reverse-repo auction, and the RBI accepts bids according to the announced amount, tenor and auction terms. The SDF rate is set as part of the policy corridor; a VRRR auction produces a variable rate.
| Feature | Standing Deposit Facility (SDF) | Variable-rate reverse repo (VRRR) |
|---|---|---|
| How funds are placed | Through a standing facility available to eligible counterparties under RBI terms. | Through accepted bids in an RBI auction. |
| Liquidity absorbed | Funds banks deposit with the RBI. | Funds placed through accepted auction bids. |
| Collateral | Introduced as an absorption facility that does not require collateral. | A reverse-repo operation is collateralized in the RBI framework; check the terms of a particular auction. |
| Rate formation | A standing rate linked to the LAF corridor. | A variable auction rate determined under the terms of the announced operation. |
| Tenor | Introduced for overnight deposits, with the RBI retaining flexibility to offer longer tenors as needed. | Set by the RBI for each announced auction; the framework includes main 14-day operations and fine-tuning operations at other tenors. |
| Operational role | A standing absorption option and the lower bound, or floor, of the LAF corridor. | An auction tool for absorbing liquidity at an announced amount and tenor. |
The SDF’s standing rate is not the same as a VRRR auction rate. Nor does a variable auction rate mean the RBI has committed to a particular rate in advance: auction terms and bids determine the outcome. The SDF supplies a facility rate under its rules; VRRR auction participants respond to the particular operation the RBI has announced.
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There are four useful comparison points. First, access: SDF is standing, while VRRR is available through a scheduled or announced auction. Second, collateral: the SDF was introduced specifically as an absorption tool that does not require collateral, while reverse repo operations in the RBI framework are collateralized. Third, rate formation: a standing corridor rate is distinct from a variable auction outcome. Fourth, tenor: the SDF began as an overnight facility with flexibility for longer tenors, while each VRRR has an announced tenor. These differences explain why the tools are related but not interchangeable.
How does each tool absorb surplus liquidity?
Standing Deposit Facility
A bank with eligible surplus funds can place them with the RBI through the SDF. The deposit removes those funds from the banking system’s available liquidity for the facility’s tenor. The RBI introduced the SDF as a way to absorb liquidity without providing collateral, and positioned it as the floor of the LAF corridor.
The word “standing” describes the facility’s role: it is available to eligible counterparties under the RBI’s terms rather than being a one-off auction whose amount must first be announced. It does not mean that every bank will use it, that every available rupee will automatically be placed there, or that the facility has no rate. Banks’ choices and the prevailing liquidity conditions affect actual placements.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchThe SDF is also not a claim that banks lend directly to one another. It is a deposit with the RBI. When a bank makes a placement, those funds are absorbed from the available liquidity pool for the relevant period. The facility’s place at the LAF floor gives it a corridor role as well as an absorption function.
Variable-rate reverse repo
For a VRRR, the RBI announces an auction, including its terms and tenor. Banks submit bids, and the RBI accepts bids under the auction design. The accepted placements absorb liquidity for the operation’s tenor. Because it is an auction, the rate is variable rather than a standing rate automatically available at the corridor floor.
The useful sequence for understanding a particular operation is to separate the announcement from the result. The announcement tells a reader what operation is being offered, including the stated tenor and amount or other terms. The result tells the reader what bids were accepted and the rate outcome. The operation’s actual absorption is therefore not simply the total surplus liquidity in the banking system; it is the amount placed through accepted bids, subject to the operation’s terms.
That distinction matters when comparing VRRR with SDF. An auction can be designed for a stated amount and period, giving the RBI an operation tailored to those terms. The SDF, by contrast, is a standing absorption option. The two processes influence how funds reach the RBI, even though both have the same broad liquidity effect.
In practical terms, the SDF offers standing access under facility rules; the VRRR lets the RBI conduct an operation tailored to a specified amount and period. The tools can therefore serve different operational needs even when both are absorbing surplus funds.
Which one absorbs more liquidity?
There is no permanent winner. The amount absorbed by each tool changes with the level and distribution of surplus liquidity, banks’ use of the standing facility, auction bids and terms, and the RBI’s choice of operations. A rate or absorption share observed in one period should not be treated as a fixed feature of the framework.
It is helpful to distinguish a tool’s capacity to absorb funds from its observed use. The SDF’s standing nature does not guarantee that placements will exceed auction absorption; banks’ use of the facility depends on conditions and the standing terms. Likewise, an RBI auction does not mean VRRR will absorb a predetermined share of all surplus funds. It absorbs the placements accepted under that operation. A comparison must therefore use figures for the same defined period and the same measure of absorption.
The RBI’s historical examples show that the tools can operate together. In a 2022 bulletin, the RBI described daily average surplus liquidity between November 15 and December 9 as being partly absorbed through overnight SDF placements, with the remainder absorbed through VRRR auctions. In a later example, SDF placements represented about 61 percent of average total absorption during October 16 to November 18, 2024. That share applies only to that period; it does not establish a permanent allocation or the current mix.
The 2022 example demonstrates joint use, not a rule that overnight SDF always absorbs one portion and VRRR the rest. The 2024 figure is similarly a dated observation. Neither example establishes which tool absorbs more in another period, and neither can be carried forward as an estimate for October 2026. Liquidity conditions, bank use, auction design and RBI decisions can all change the observed split.
How do the tools fit into the RBI’s liquidity framework?
The LAF is the RBI’s framework for managing short-term liquidity. The SDF forms its lower bound, while the RBI can use variable-rate operations to absorb or inject liquidity as needed. The RBI framework overview describes a 14-day term repo or reverse-repo auction at a variable rate, aligned with the Cash Reserve Ratio (CRR) maintenance cycle, as the main liquidity-management operation. Fine-tuning operations can address unexpected changes in liquidity, and longer tenors may be used when required.
The CRR is the Cash Reserve Ratio. The framework’s reference to aligning the main 14-day operation with the CRR maintenance cycle helps explain why tenor and timing matter: the main operation was described in relation to that cycle, not as an isolated instrument with a permanent, unrelated schedule. Fine-tuning operations provide a way to respond when liquidity changes unexpectedly. Longer tenors are an option when warranted, rather than an assertion that every operation uses a longer maturity.
In February 2022, the RBI said it would conduct variable-rate repo operations at varying tenors as warranted, with 14-day VRR/VRRR operations as the main tools coordinated with the CRR cycle. It also described fine-tuning operations for unexpected liquidity changes and longer-maturity auctions when warranted. Those statements describe the announced framework at that time, not proof of the precise auction schedule in October 2026. An announced 14-day main-operation design should not be mistaken for a guarantee that every current operation follows the same timetable.
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The framework also helps avoid a common category error. The LAF corridor floor is a standing policy-framework feature, while VRRR is an auction operation. Saying that SDF is the floor does not mean that every absorption operation must be conducted through SDF. Saying that 14-day variable-rate operations were described as the main tool in a dated framework announcement does not prove that a current auction is taking place on a particular date or that it has a particular amount or rate.
Did the SDF replace VRRR?
No. When the RBI introduced the SDF on April 8, 2022, it replaced the fixed-rate reverse repo as the floor of the LAF corridor. It did not eliminate VRRR auctions. The RBI continues to describe variable-rate reverse-repo operations as part of its liquidity-management framework, and its historical account of the November–December 2022 period illustrates the SDF and VRRR being used together.
The distinction matters: the fixed-rate reverse repo’s former corridor-floor role and the VRRR auction tool are not interchangeable labels. The SDF is a standing facility; VRRR is an auction operation. The SDF’s introduction changed the instrument at the corridor floor, but the RBI’s published framework and examples do not support saying that it replaced VRRR or made auctions obsolete.
The RBI said a 2018 amendment to Section 17 of the RBI Act empowered it to introduce the SDF as an additional liquidity-absorption tool without collateral. On April 8, 2022, it introduced the facility at 3.75 percent and made it the LAF corridor floor, replacing the fixed-rate reverse repo in that role. The RBI also said the SDF and the Marginal Standing Facility (MSF) would be available all days throughout the year. Those launch details explain the SDF’s institutional role; the launch rate is historical, not current.
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Rates move with monetary policy decisions, and operational details can change. The following figures are dated RBI examples, not current October 2026 rates or a statement of today’s auction practice.
| RBI-published figure | Period and meaning |
|---|---|
| 3.75 percent | RBI SDF launch rate on April 8, 2022. |
| 6.25 percent | RBI SDF rate recorded at the August 2024 policy meeting. |
| 6.50 percent | RBI repo rate recorded at the August 2024 policy meeting. |
| About 61 percent | SDF placements’ share of average total absorption from October 16 to November 18, 2024. |
The August 2024 SDF and repo rates illustrate the corridor relationship at that meeting; they should not be quoted as today’s rates. The available dated figures do not verify the rates or operation mix on October 13, 2026. For a current decision or market analysis, consult the RBI’s latest policy announcement and the specific auction notification rather than extrapolating from historical values.
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Rate comparisons should also respect how each rate is formed. The SDF has a standing rate linked to the LAF corridor. The VRRR rate is variable and tied to an auction’s terms and outcome. A historical SDF rate cannot be used as the VRRR auction rate, and a rate from one VRRR operation cannot automatically be used to describe another auction. Any comparison should identify the instrument, date, and operation or policy meeting behind the figure.
The RBI’s figures are valuable for describing how the framework has worked, but not for inferring today’s conditions. The SDF launch rate of 3.75 percent belongs to April 8, 2022. The 6.25 percent SDF rate and 6.50 percent repo rate belong to the August 2024 policy meeting. The approximately 61 percent absorption share belongs to October 16–November 18, 2024. None of those facts verifies the current 2026 rate or the current split between SDF and VRRR.
How to decide which tool matters for a particular question
- To understand the corridor floor: focus on the SDF’s standing rate and role as the LAF’s lower bound.
- To understand a particular liquidity operation: look at the VRRR auction notice for its tenor, amount and terms, then the result for accepted bids and rate.
- To assess total absorption: use dated RBI liquidity data for the exact period and distinguish SDF placements from auction-based operations.
- To describe the framework accurately: state the period and source for each rate, share or operating schedule. Do not present an older figure as current.
For a reader checking a specific RBI operation, a reliable order of inquiry is: identify whether the question concerns the standing SDF or an announced auction; note the date and tenor; read the terms of that specific operation; and, for a VRRR, distinguish announced terms from the subsequent auction result. If the question concerns relative absorption, use figures covering the same period and measure. If the question is about present rates or schedule, consult current RBI material rather than reusing an older example.
This approach keeps three different questions separate: what the instrument is, what the RBI announced for a particular operation, and what was actually absorbed in a period. A framework description answers the first. An auction notification answers the second. Period-specific liquidity data answer the third. Mixing them can make an old framework statement sound like a current timetable or make a dated share appear permanent.
Why both tools matter to bank liquidity
When banks have surplus funds, placement with the RBI reduces the amount left circulating among banks for the relevant period. A standing facility gives eligible banks an available route under the SDF’s terms, while VRRR auctions let the RBI absorb funds through operations whose amount and tenor it announces. Their different access and rate mechanisms give the RBI more than one way to manage liquidity; actual use depends on conditions and operational decisions, not a rule that one instrument must always take precedence.
For banks, the distinction is operational: the SDF is accessed under standing-facility terms, while a VRRR requires a bid in an announced auction and is subject to its outcome. For readers tracking RBI policy, the distinction is analytical: the SDF is both an absorption facility and the LAF corridor floor, while VRRR is one variable-rate auction instrument within the liquidity-management framework. Neither description implies a fixed hierarchy for how much each will absorb.
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The safest summary is conditional. If the question is which instrument is the standing corridor-floor facility, the answer is SDF. If the question is which instrument absorbs liquidity through a variable-rate auction for an announced tenor, the answer is VRRR. If the question is which absorbed more in a period, the answer requires dated RBI data for that period. The framework supports both, and the historical record supplied here shows them operating together.
Frequently Asked Questions
What is the difference between VRRR and SDF?
The SDF is a standing, uncollateralized deposit facility at the floor of the LAF corridor. VRRR absorbs liquidity through collateralized reverse-repo auctions at a variable rate and for an announced tenor. Access, collateral, rate formation and tenor distinguish them.
Which tool absorbs more liquidity, VRRR or SDF?
Neither always absorbs more. The mix depends on liquidity conditions, banks’ placements and bids, auction terms and RBI operational decisions. RBI data showed joint use in November–December 2022, and SDF placements were about 61 percent of average total absorption from October 16 to November 18, 2024; that share is specific to that period.
Is SDF replacing VRRR?
No. On April 8, 2022, SDF replaced the fixed-rate reverse repo as the LAF corridor floor. It did not replace VRRR auctions, which remain a separate auction-based liquidity tool in the RBI framework.
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No. The RBI introduced the SDF as an absorption facility that does not require collateral. Reverse-repo operations such as VRRR are collateralized in the RBI framework; check the terms of a specific auction.
Is the VRRR rate fixed in advance?
No. VRRR is a variable-rate auction. The operation’s terms are announced, and the rate is determined through the auction under those terms. The SDF, by contrast, has a standing rate linked to the LAF corridor.
What is the usual VRRR tenor?
The RBI framework described 14-day variable-rate operations aligned with the CRR maintenance cycle as the main operations, with fine-tuning at other tenors and longer tenors when warranted. That dated framework description does not establish the current October 2026 auction schedule.
What were the RBI’s SDF and repo rates in August 2024?
The RBI recorded an SDF rate of 6.25 percent and a repo rate of 6.50 percent at the August 2024 policy meeting. These are historical figures and should not be presented as current rates.
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The Bottom Line
Bottom line: SDF and VRRR both absorb surplus liquidity, but they do so differently. SDF is a standing, uncollateralized facility and the LAF corridor floor; VRRR is a collateralized reverse-repo auction at a variable rate for an announced tenor. The RBI can use both. Which absorbs more is period-specific, so compare dated RBI data and current operation terms rather than treating any historical rate, share or schedule as permanent.
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