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Businesses treat eNACH as a different payment system from NACH and do not track registration status, so first debits fail.
eNACH is a NACH mandate authorised online; it receives a UMRN from NPCI once the customer's bank validates it, then debits and returns run on standard NACH batches.
Mandate register with registration channel, authentication mode, UMRN, start date, maximum amount and status for every customer.
Debits presented only on confirmed mandates within their limits, with fewer first-debit failures.
eNACH is a NACH mandate that the customer registers online, by net banking, debit card or Aadhaar-based authentication, instead of signing a paper form. It reaches a UMRN (Unique Mandate Reference Number) sooner, and then runs on the same NPCI (National Payments Corporation of India) debit batches as a paper mandate.
How is an eNACH mandate registered, step by step?
- The business sends a link. A lender or business, through its sponsor bank or payment gateway, shares a mandate link with the amount cap, frequency, start date and end date.
- The customer authenticates. The customer chooses their bank and approves through net banking, debit card details or Aadhaar-based authentication.
- The bank validates. The customer’s bank checks the account and the authentication.
- NPCI issues the UMRN. The mandate is registered and gets its 20-character UMRN.
- The business gets confirmation. The status comes back as accepted or rejected, often with a reason.
Only after step 5 should the business present the first debit.
How do paper NACH, eNACH and UPI AutoPay compare?
| Feature | Paper NACH | eNACH | UPI AutoPay |
|---|---|---|---|
| Set-up | Signed form, scanned and sent to customer’s bank | Online authentication | Approval in a UPI app |
| Set-up time | Typically days to a few weeks | Typically same day to a few days | Usually minutes |
| Proof held | Signed physical form and image | Electronic authorisation record | UPI mandate record |
| Cancellation | Request to bank or business | Bank, business, or online where offered | In the UPI app |
| Failures reach the business | NACH return file | NACH return file | Gateway status |
| Typical use | Older loans, branches | Loan EMIs, insurance, SIPs | Subscriptions; ₹15,000 per debit without extra authentication (₹1 lakh for insurance, mutual funds and credit card bills) |
Why do some eNACH mandates fail at the first debit?
Four common reasons:
- Registration not complete. The customer started but the bank had not confirmed. The mandate is pending or rejected.
- Details differ. Account number, IFSC or name on the mandate does not match the bank’s records.
- Limit too low. The debit amount is above the mandate maximum.
- Too early. The debit was presented before the mandate start date.
Each failed presentation can carry a rejection fee charged by the sponsor bank. Banks set their own charges, and GST at 18 percent applies on bank fees. That is why it pays to check status before presenting.
Worked example: an EMI mandate set up online
On 1 October a customer takes a loan with a ₹3,000 monthly EMI due on the 5th. The lender sends an eNACH link with a maximum amount of ₹5,000, monthly frequency, start date 1 November and end date after 24 instalments.
- 1 October: customer authenticates by net banking.
- 2 October: status returns as accepted with a UMRN.
- 5 November: first debit of ₹3,000 presented. It is within the ₹5,000 cap and after the start date, so it succeeds.
Over 24 months the mandate collects 24 × ₹3,000 = ₹72,000. Had the lender set the cap at ₹2,500, every debit would come back as exceeding the mandate amount, and the customer would need a new mandate.
Does eNACH change anything in the books?
No. The bank statement shows the same NACH credit (for the business) or NACH debit (for the customer). For the business, collections usually arrive as one batch credit, and returns arrive separately. Posting each customer’s receipt still needs the settlement and return files keyed by UMRN.
A failed debit for insufficient funds can also have legal weight: Section 25 of the Payment and Settlement Systems Act 2007 treats dishonour of an electronic funds transfer for insufficient funds in a way similar to a cheque bounce.
What to read next
- NACH mandate management and reconciliation shows how to keep a mandate register.
- eNACH mandate rejection fee tracking covers the cost of failures.
- What is a UMRN and what is NACH.
NACH reconciliation is on the TransactIG roadmap; see NACH batch reconciliation.