IMPS: How It Works, Limits and Charges (2026)

Sometimes a transfer cannot wait for the next batch. A supplier is holding a delivery until payment lands, a customer needs an urgent refund, or you have to move money between your own accounts right now. IMPS is built for these moments. It sends money from one bank account to another instantly, at any hour, on any day, including Sundays and holidays. This guide explains what IMPS stands for, how an instant transfer works, the limits and charges to expect, the mobile-number and MMID method, and how IMPS compares with UPI and NEFT so you always know which rail to use.

What IMPS is

IMPS stands for Immediate Payment Service. It is a payment system run by the National Payments Corporation of India, the same body behind UPI, and its whole purpose is speed. Where NEFT collects transfers and settles them in half-hourly batches, IMPS processes each transfer on its own and credits the beneficiary within seconds. It works 24 hours a day, every day of the year, so there is no waiting for banking hours or the next working day.

For a business, that instant, round-the-clock nature is the point. You can release an urgent payment late at night, refund a customer on a holiday, or move funds the moment a deal is agreed, and the money is there almost immediately. IMPS is most often used through net banking or a mobile banking app, and it has been a reliable instant rail for years, including for amounts larger than people usually send by UPI.

How an IMPS transfer works

An IMPS transfer is quick to set up and quicker to complete. The most common way is by account number and IFSC, exactly like NEFT, but settled instantly rather than in a batch:

• Add the beneficiary: enter the beneficiary's name, account number and IFSC code in your net banking or bank app, choosing IMPS as the mode.
• Enter the amount: type the amount you want to send, within your bank's IMPS limit.
• Confirm the transfer: approve it, usually with an OTP or app authentication.
• The money lands instantly: the beneficiary's account is credited within seconds, at any time of day.
• Both sides get a reference: you receive a transaction reference number, and the beneficiary sees the credit, giving a clear record.

Because each transfer is processed on its own and in real time, there is no batch wait, which is why IMPS is the go-to when the timing genuinely matters.

Mobile number and MMID transfers

IMPS was one of the first systems to let you send money without knowing the other person's account number. Using MMID, short for Mobile Money Identifier, you can transfer to someone with just their registered mobile number and their seven-digit MMID, a code their bank links to their account. In the days before UPI, this made IMPS unusually convenient, because you did not need to store long account numbers and IFSC codes.

Today, most people send IMPS by account number and IFSC, or simply use UPI for mobile-based transfers, so MMID is used less than it once was. Many banks still support it, though, and it can be handy in situations where you know the person's mobile number but not their bank details. If you plan to use MMID, both you and the beneficiary need one generated from your respective banks, and you send to their mobile number plus MMID rather than their account.

IMPS limits

IMPS supports sizeable transfers, which is one reason businesses still use it alongside UPI. The exact per-transaction limit is set by your bank within the overall ceiling allowed by NPCI, and it varies by channel and account:

• Per-transaction cap: many banks allow lakhs of rupees in a single IMPS transfer through net banking, higher than a typical UPI transaction.
• Channel differences: the limit in a mobile banking app can be lower than through net banking on a computer.
• Daily limits: banks apply a total daily cap across your IMPS transfers, separate from the per-transaction figure.
• Account type: current accounts used by businesses often carry higher limits than personal savings accounts.

Because each bank sets its own figures, do not assume a number from one bank applies to another. If a large urgent transfer is coming, check your IMPS limit in advance and raise it if your bank allows, so you are not forced to split the payment.

IMPS charges

Unlike UPI, which is generally free for customer payments, IMPS often carries a small fee. Many banks charge in slabs that rise with the amount, so a larger transfer costs a little more than a small one, though the fee is usually modest against the value of an instant, all-hours transfer. Some banks waive the charge for online IMPS or for smaller amounts, and business or current accounts may follow their own schedule. As always, charge sheets are revised from time to time, so confirm the current IMPS charges with your own bank rather than assuming. For a small business that sends the occasional urgent transfer, the fee is rarely a deciding factor; the speed usually justifies it.

IMPS vs UPI vs NEFT

IMPS sits between UPI and NEFT, and knowing where each fits keeps your transfers cheap and fast. This comparison sums it up:

In practice, most small everyday customer payments now run on UPI because it is free and simple to use from a phone; our guide to UPI explains why. IMPS remains useful for instant account-to-account transfers, especially larger ones through net banking, and NEFT is the choice for routine payments where a short batch wait is fine.

When to use IMPS in a business

IMPS earns its place whenever speed and a real-time credit matter but you are transferring to a bank account rather than paying at a counter by QR. Releasing an urgent payment to a supplier so goods can ship, sending a fast refund to a customer, moving money between your own accounts at different banks, or paying a contractor who needs the funds immediately are all good fits. The instant, 24x7 nature means you are never blocked by banking hours, and the higher per-transaction limits make it practical for amounts that are larger than a typical UPI payment yet below the two lakh rupee RTGS minimum.

Where you might prefer another rail is for very small customer-facing payments, where UPI is free and simpler, or for a very large single payment of two lakh rupees or more, where RTGS gives real-time settlement with finality. Matching the transfer to the rail keeps your costs down and your payments fast. For collecting money owed to you, pairing quick digital transfers with steady follow-up works well; our guide to a payment reminder app shows how to nudge customers before a balance drags on.

Staying safe with IMPS

Because IMPS is instant and cannot easily be reversed once the money lands, verify the beneficiary details before you confirm. Check the account number and IFSC, or the mobile number and MMID, from a reliable source rather than a hastily shared message, and confirm the registered name your bank shows if it displays one. Keep the transaction reference number for every IMPS transfer and attach it to the invoice or reason it settled, so you can trace or prove any payment quickly. Treat a request to send an urgent IMPS to an unfamiliar account with caution, since scammers rely on the speed and finality of instant transfers, and a moment of checking is far cheaper than chasing a wrong transfer afterwards.

The bottom line

IMPS is the instant, round-the-clock rail for account-to-account transfers, well suited to urgent business payments and to amounts larger than a typical UPI payment. Watch your bank's limits, expect a small fee in some cases, and use UPI for tiny everyday payments and RTGS for large single ones. IndiaCRM ties each payment you send or receive to the right invoice and helps you chase what customers owe. Get the mobile app, read about how to accept online payments, or explore all our features to keep billing and payments in one place.