Invoice Payment Terms & Late Payment Rules in India

State your payment terms explicitly on every invoice — "Net 30," "Due on Receipt," or whatever you've agreed — because vague or missing terms are one of the most common reasons payments run late without the customer feeling like they've actually broken an agreement. And if you're a registered MSME in India, you have a real statutory backstop most freelancers don't know exists: a 45-day payment ceiling with a steep compound-interest penalty for buyers who ignore it.

What do Net 15, Net 30, and Net 45 actually mean?

These are shorthand for how many days after the invoice date payment is due — not from when the customer opens the email, approves the work, or processes it internally, unless your terms say otherwise. "Net 30" issued on the 1st of the month is due on the 31st, full stop. This is exactly why getting your invoice date right, and sending the invoice promptly rather than sitting on it, directly affects how quickly you actually get paid.

Can I actually charge interest if a client pays late?

For an ordinary commercial invoice, only if you said so. The right to charge late-payment interest generally has to be disclosed on the invoice or agreed with the customer beforehand — a line like "1.5% per month charged on invoices unpaid after the due date" makes it enforceable. Adding an interest charge after the fact, with no prior disclosure, is much harder to justify and often not worth the relationship friction for a small business chasing a single overdue invoice.

What is the MSMED Act, and why should freelancers care?

The Micro, Small and Medium Enterprises Development Act, 2006 gives Udyam-registered MSME suppliers a statutory right that goes well beyond what an ordinary invoice's payment terms can do on their own:

• If there's a written agreement specifying a payment period, the buyer must pay within that period — but never more than 45 days from the date of acceptance of the goods or service, even if the agreement says otherwise.
• If there's no written agreement, the buyer must pay within 15 days.
• If the buyer pays late, they owe compound interest at three times the RBI-notified bank rate — a figure that moves with RBI notifications (roughly ~19.5% per annum, compounded monthly, as of FY2025-26) rather than being a fixed number you can quote indefinitely.

This applies specifically to suppliers registered under Udyam (the government's official MSME registration) — it isn't automatic just because your business happens to be small. Registration is free and the process is on the government's Udyam portal; if you're a freelancer or small service business invoicing regularly, it's worth doing purely for this protection. Confirm current thresholds and the notified interest rate on the GST portal or with a tax professional, since both can be revised by notification.

Worked example

A Udyam-registered freelance designer invoices a client ₹50,000 with a written agreement stating Net 45. The client pays on day 70 instead — 25 days late.

The exact rupee amount depends on the currently notified bank rate, but the point stands: this is real, statutory leverage — not a courtesy line on an invoice — and most freelancers who'd qualify for it don't know it exists.

What should the payment-terms line on your invoice actually say?

Keep it specific and unambiguous. A few examples that work well in the Notes/Terms section of an invoice:

• "Payment due within 30 days of invoice date. Late payments subject to 1.5% monthly interest."
• "Registered MSME (Udyam). Payment due within 45 days of acceptance per the MSMED Act, 2006."
• "Payment due on receipt. Please confirm payment via [method] and reference invoice number [X]."

If you're issuing corrections to an already-sent invoice rather than chasing payment on the original, that's a different process — see our credit note & debit note guide. And if this invoice needs to follow the full GST-compliant format to begin with, check our GST invoice format checklist.

For a repeating client on a monthly retainer, the same payment-terms discipline matters every cycle — see our guide to recurring invoices for freelancers for the practical month-to-month workflow. You can add your payment terms directly in the Notes field when creating an invoice in QWIK INVOICE's invoice generator.