Analyze the interplay between external capital inflows (such as NRI deposit schemes) and domestic liquidity management by the RBI.

External capital inflows are not merely a balance-of-payments event. When the RBI absorbs foreign exchange, an equivalent rupee liquidity enters the banking system — making external sector policy and domestic monetary operations two sides of the same coin, as India's 2026 liquidity glut demonstrates.

Channel: how inflows become domestic liquidity

• Under the RBI's special USD-INR swap facility, inflows of about USD 136 billion were reported, of which FCNR(B) deposits alone accounted for nearly USD 127 billion [1].
• Conversion of this foreign currency creates rupee reserves with banks, expanding reserve money without any domestic policy action — liquidity is thus imported.
• Consequence: system surplus touched roughly ₹9.85–10.3 lakh crore in September 2026 [3].

Impact on monetary policy

• The weighted average call rate (WACR) is the declared operating target, to be aligned with the repo rate [5]; excess cash drags it toward or below the SDF floor.
• A broken corridor floor weakens transmission — the MPC's signal stops guiding market rates.
• Prolonged surplus risks excessive credit growth and asset-price pressures.

RBI's calibrated response

• Tactical: Variable Rate Reverse Repo (VRRR) auctions under the LAF — a ₹7 lakh crore auction was notified on 4 September 2026 [2], with daily absorption of the order of ₹2.9 lakh crore reported in money market operations [3].
• Durable: OMO sale of G-Secs worth ₹1,00,000 crore in three tranches (17, 21, 28 September 2026) [4], which permanently extinguishes liquidity rather than returning it overnight.
• Legal basis: Section 17, RBI Act, 1934, empowering such securities operations [6].

Limits of the interplay

• VRRR manages the flow, not the stock; auctions are frequently undersubscribed when banks anticipate GST or advance-tax outflows.
• The impossible trinity persists: managing the exchange rate amid open capital flows constrains monetary autonomy.

Thus, inflow-driven liquidity is best handled by sequencing tactical absorption with durable instruments, while phasing inflow-inducing schemes in step with absorption capacity. Aligning external sector incentives with the monetary framework — as the revised liquidity framework intends — keeps the policy rate meaningful and supports stable, non-inflationary growth.