Examine the implications of large, one-off foreign currency inflows on domestic banking liquidity and monetary policy transmission.

RBI's special USD–INR concessional swap window (operationalised 8 June 2026, shut for fresh FCNR(B) deposits on 31 August 2026) mobilised about $127 billion in FCNR(B) deposits within a $136 billion provisional total [2], later placed near $133 billion and $143.6 billion across FCNR(B), OFCB and ECB channels [3]. Such lumpy inflows strengthen bank funding but complicate liquidity and rate management.

Implications for domestic banking liquidity

• Stable medium-term funding: only fresh deposits of minimum three-year original tenor, with a one-year lock-in and a principal-only swap capped at five years, qualified [1] — giving banks durable foreign-currency resources and easing stretched credit–deposit ratios.
• Rupee liquidity creation: every dollar swapped with RBI released rupees into the system, enlarging the durable surplus and forcing repeated VRRR absorption [4], including ₹1 lakh crore overnight auctions.
• Cost and deployment: banks' deposit costs edged up and net interest margins compressed modestly; large sums also take months to deploy productively.
• External debt character: FCNR(B) is borrowing, not equity — with a narrow three-month mobilisation window, repayments bunch around 2029–31, demanding dollars possibly at a stressed moment.

Implications for monetary policy transmission

• Weakened rate signal: surplus cash pushed the weighted average call rate into the lower half of the LAF corridor, loosening the grip of the 5.50% repo rate [4] — a forex tool inadvertently easing monetary conditions.
• Corrective burden on RBI: durable absorption (VRRR, potentially CRR) became necessary, creating an awkward loop of inflow inducement followed by liquidity sterilisation.
• Exchange-rate limits: dollars moved from NRIs to banks to RBI, not to the spot market; MPC read the inflows as support for rupee stability and containment of imported inflation [5], i.e. reserves rose more than the rupee.
• Repeatability: the identical 2013 swap design [6] shows this is crisis insurance, not a standing instrument.

Such windows buy time and reserves, not structural strength. The way forward lies in pre-announced absorption calendars, staggered forward-market management of maturities, transparent disclosure of the hedging cost RBI bears, and above all a shift toward durable capital — FDI and long-term equity — so that external stability rests on non-repayable flows rather than recurring emergency taps.