Contents
Definition
IMPS (Immediate Payment Service) is a 24x7 instant interbank electronic fund transfer service operated by the National Payments Corporation of India (NPCI). Launched in 2010 (live to public November 2010), IMPS enables instant credit to the beneficiary's account at any hour, any day — including Sundays, public holidays, and odd hours — distinguishing it from the earlier NEFT (batch) and RTGS (high-value only) rails. IMPS supports up to ₹5,00,000 (₹5 lakh) per transaction (NPCI circular dated March 2021 raised the limit from ₹2L to ₹5L).
How It Works Mechanically
IMPS leverages the existing NPCI switching infrastructure (same platform as UPI's underlying interoperability layer). A sender can initiate IMPS via: (1) mobile banking using the beneficiary's MMID (Mobile Money Identifier) + mobile number, or (2) internet/mobile banking using the beneficiary's account number + IFSC code. The originating bank sends the transaction to NPCI's central switch, which routes it to the destination bank in real time. NPCI net-settles inter-bank positions in batch windows (4 times daily), but the credit to the beneficiary is instant and irrevocable — the destination bank uses its own funds to credit immediately. IMPS operates over the NPCI IMPS platform, with each transaction generating a unique Transaction Reference Number (TRN) for dispute resolution.
Tax Treatment / Fees / Limits
Per RBI notification, charges for IMPS via savings accounts were capped; many banks offer IMPS free for mobile/internet banking up to certain limits. Bank-counter IMPS may carry a nominal fee (₹5–₹15 per transaction based on amount band). Maximum per transaction: ₹5,00,000. Minimum: ₹1. No TDS or transaction tax is levied at the transfer point. IMPS transactions appear on bank statement with channel code "IMPS" and TRN. No annual limit is prescribed by NPCI for individuals (though banks may impose daily/monthly limits).
Common Use Case
An investor sending a top-up SIP amount of ₹50,000 at 11 PM on a Sunday to an AMC folio — NEFT is unavailable for immediate credit; RTGS requires ₹2L minimum; UPI has a ₹1L per-transaction cap for most banks. IMPS fills this gap perfectly: 24x7, instant, ₹5L ceiling. Also used by gig workers receiving client payments outside banking hours and by traders transferring funds to broker accounts before early market open.
Worked Example
Sanjay sends ₹2,00,000 via IMPS from his mobile banking app at 11:45 PM on 15 August (Independence Day).
- Sanjay enters beneficiary account number + IFSC → submits.
- His bank routes to NPCI IMPS switch within milliseconds.
- Beneficiary's bank receives instruction → credits beneficiary account instantly (within seconds).
- Sanjay receives a confirmation SMS with TRN at 11:45:08 PM.
- Transaction fee: ₹0 (mobile banking, most banks waive for amounts up to ₹5L).
- NPCI net-settles the inter-bank position at the next batch window (4 AM).
See Also
- UPI (Unified Payments Interface)
- NEFT (National Electronic Funds Transfer)
- RTGS (Real-Time Gross Settlement)
- Fund Transfer Methods in India
- NPCI — National Payments Corporation of India
Primary Source
Disclosure: MintByte Investment Advisors LLP (ARN-314872, APMI APRN-01658) is a SEBI-registered investment adviser. This article is for educational purposes only. MintByte does not hold a banking licence.