RBI liquidity surplus hits 4-year high at ₹4.57 trillion

Liquidity surplus climbs on G-Sec maturities

Liquidity in India’s banking system moved to around a four-year high, reflected in banks parking excess funds with the Reserve Bank of India (RBI) through the liquidity adjustment facility (LAF) window, according to market participants. RBI data, published with a one-day lag, showed net liquidity in a surplus of ₹4.57 trillion on Wednesday, the highest level since May 19, 2022. Dealers attributed the jump largely to government securities (G-Secs) maturing and releasing cash back into the system. The surplus comes at a time when the RBI has been actively managing liquidity conditions through a mix of tools, ranging from open market operations (OMOs) to repos and foreign exchange swaps.

What the RBI’s latest liquidity data indicates

Net liquidity being in surplus means the banking system, in aggregate, has more funds than it needs for its immediate requirements. In such phases, banks typically park excess money with the RBI instead of borrowing in the overnight market. The data point is closely tracked because it influences short-term rates, especially the weighted average call rate (WACR), which is the operating target of monetary policy in India’s corridor system.

The RBI has also outlined what it considers a comfortable liquidity zone. In its Monetary Policy Report, the central bank said maintaining a liquidity surplus in the range of 0.6% to 1.1% of deposits is likely to keep the spread between the WACR and the policy rate in a 5-10 basis points band. In a post-policy press conference on Wednesday, RBI Governor Sanjay Malhotra said the central bank will maintain sufficient liquidity by acting “proactively and pre-emptively” as required.

G-Sec maturities: near-term drivers of surplus

A key driver behind Wednesday’s surplus was a maturity of G-Secs worth ₹0.31329 trillion. Market participants also pointed to upcoming maturities scheduled on April 12 and April 17, of ₹0.86403 trillion and ₹0.34791 trillion, respectively. Together, these flows were expected to lift the system surplus closer to ₹5 trillion.

Maturity-related liquidity is often considered mechanical, because funds return to investors when bonds redeem. But the near-term impact can be meaningful for money-market pricing, particularly if other cash drains are not simultaneously present. This is also why traders watch the RBI’s day-to-day liquidity management stance for signals on whether it views the surplus as transient or persistent.

WACR, SDF and why rates can slip below the floor

With surplus liquidity, the WACR can soften because banks have less need to borrow overnight from each other. Market participants said the WACR, which is currently hovering around the standing deposit facility (SDF) rate, may briefly fall below it if the surplus persists.

On the day in focus, the WACR was at 5.10%, compared with 5.08% the previous day. The SDF rate is 5.00%, which is 25 basis points lower than the policy repo rate. A fall in WACR below the SDF is typically interpreted as a sign of excess liquidity, because it implies banks are willing to lend overnight at rates lower than what they can earn by placing funds with the RBI at the SDF.

The WACR had fallen below the SDF rate on two occasions the previous week. Despite that, market participants noted that the RBI refrained from conducting variable rate reverse repo (VRRR) operations to absorb what it may have viewed as short-lived liquidity.

RBI’s liquidity toolkit: OMOs, repos and FX swaps

The RBI has used OMOs to add durable liquidity when needed. In one such operation cited in the context, it conducted an OMO purchase auction on March 9, 2026, buying Government of India securities worth ₹0.50 trillion. The securities purchased included the 6.01% Government Security maturing on July 21, 2030 and the 7.30% Government Security maturing on June 19, 2053.

Separately, the RBI has also leaned on liquidity operations during periods of tax-related outflows. Advance tax payments can temporarily move funds from the banking system to government accounts, tightening liquidity. In these conditions, bond purchases, repos or swaps can be used to replenish funds with banks and stabilise money-market rates.

The broader context also includes earlier OMO activity. The RBI conducted ₹2.00 trillion of OMO purchases in December 2025 and January 2026 in four tranches of ₹0.50 trillion each. It also carried out ₹1.25 trillion of OMO purchases in May 2025.

Government bond switch auction in parallel

Alongside the RBI’s liquidity operations, the Government of India conducted a bond switch auction. Under this process, the government bought back securities worth ₹0.06309 trillion and simultaneously issued new bonds worth ₹0.06431 trillion. The repurchased securities were scheduled to mature in the next financial year.

Such switch operations are used to smooth the government’s redemption profile by replacing near-term maturities with longer-dated issuances. While this is primarily a debt management exercise, it can interact with market liquidity and demand across maturities.

Bond market reaction when the RBI signals support

A separate market episode highlighted how strongly bonds can respond to liquidity measures. Indian government bonds recorded their strongest rally in four months on a Wednesday after the RBI rolled out liquidity measures aimed at stabilising money markets and containing a rise in borrowing costs. The RBI said it will purchase ₹2.00 trillion of government bonds in four tranches spread across December and January, and it also announced a $10 billion foreign-exchange swap to be conducted the next month.

Following that announcement, the benchmark 10-year government bond yield fell to 6.54%, its sharpest single-day decline since Aug. 14. Bloomberg data also showed banking-system liquidity slipped into a deficit of ₹0.727 trillion on Dec. 22, reversing from a surplus of ₹2.6 trillion earlier in the month. The RBI’s measures were seen as addressing these swings, including seasonal pressures from tax-related outflows.

Key data points to track

RBI and government operations mentioned

Why the surplus matters for policy transmission

The surplus level matters because it can pull overnight rates closer to the floor of the corridor, and at times even below the SDF, indicating abundant cash. This can influence the effectiveness of policy rate transmission, especially if market rates persistently trade away from the intended operating level. The RBI’s stated preference for keeping liquidity surplus within a range tied to deposits is aimed at maintaining a stable spread between the WACR and the policy rate.

For market participants, the immediate focus is whether upcoming bond maturities lift surplus liquidity further and how the RBI responds. A decision to avoid VRRR absorption can signal comfort with the transient surplus. But the RBI’s broader messaging, including Governor Malhotra’s “proactively and pre-emptively” stance, suggests it is prepared to act if money-market rates move in ways that complicate policy transmission.

Conclusion

RBI data showed banking system liquidity moved to a ₹4.57 trillion surplus, supported by G-Sec maturities and with more redemptions expected to push surplus closer to ₹5 trillion. With the WACR near the SDF rate, the key watchpoints are overnight rate behaviour, the RBI’s use of VRRR or other absorption tools, and the central bank’s ongoing OMO and swap operations aimed at smoothing liquidity swings.