How to Charge Interest on Late Payments as a Freelancer in India

A client owes you Rs. 2,00,000. The invoice was due 45 days ago. They are not responding to your emails. Can you charge interest? The answer is yes — and this guide covers the legal basis, enforceable rates, exactly how to word your invoice clause, and the GST implications of late payment interest in India.

Can You Legally Charge Interest?

Yes. Indian law supports charging interest on late payments, provided certain conditions are met:

1. There must be a prior agreement. The most enforceable interest is one that was agreed to before the work began — either in your service agreement/contract or in your invoice payment terms. Without prior agreement, you can still claim interest under general contract law, but enforcement becomes harder.
2. The rate must be reasonable. Courts in India generally uphold interest rates up to 18-24% per annum for commercial transactions. Rates above 36% per annum may be deemed usurious and struck down.
3. The payment must be overdue. Interest accrues only after the agreed payment date has passed. If your invoice says "Payment due within 15 days" and the client pays on day 16, interest starts from day 16.

Legal Basis in India

Several laws provide the foundation for charging late payment interest:

Interest Rate Limits

There is no single statutory interest rate for commercial late payments. Here are the practical ranges:

Practical recommendation: Set your standard interest rate at 1.5% per month (18% per annum). This is the most commonly used rate in Indian commercial invoicing. It is enforceable, reasonable, and understood by corporate finance teams.

The best late payment clause is one you never have to enforce. Its real value is deterrence — clients who see a clear interest clause on every invoice tend to pay on time because they know the cost of not paying.

How to Word Your Invoice Clause

Here are two ready-to-use invoice payment terms clauses. Pick the one that fits your tone:

The formal clause is stronger legally but may feel aggressive for smaller clients. The friendly clause is more relational but provides weaker legal recourse. For corporate clients, use the formal clause. For individual clients or long-term relationships, the friendly approach often works better.

Practical Tips

1. Include the clause on every invoice, not just overdue ones. The interest term should be a standard part of your invoice template. Adding it only after a payment is late looks retaliatory and is harder to enforce.
2. Send a reminder before applying interest. On the due date, send a polite reminder. After 7 days overdue, send a second reminder mentioning the interest clause. After 15 days, send a formal notice with the interest amount calculated. This paper trail strengthens enforcement.
3. Calculate interest clearly on the reminder. "Your invoice of Rs. 2,00,000 dated 01-Mar-2026 was due on 16-Mar-2026. As of 01-Apr-2026 (16 days overdue), late payment interest of Rs. 1,315 (1.5% per month, pro-rated) has accrued. Total outstanding: Rs. 2,01,315."
4. Be willing to waive for good clients. Interest clauses are leverage, not punishment. If a long-term client pays 5 days late once, waiving the interest maintains the relationship. If a client is chronically late, enforce it or require upfront payment.
5. Consider a deposit for new clients. For first-time clients or large projects, request a 25-50% advance. This reduces your exposure to non-payment and signals professionalism.

GST on Late Payment Interest

This is a frequently misunderstood area. Under GST, late payment interest can be treated as consideration for "tolerating an act" — specifically, tolerating the delayed payment. The GST implications:

• If interest is agreed upfront (in the contract or invoice terms), it is considered part of the value of supply and attracts GST at 18%. You would need to issue a supplementary invoice or debit note for the interest amount with GST.
• If interest is claimed as damages (not agreed upfront, claimed under general contract law), there is an argument that it is not "consideration for supply" and therefore not subject to GST. However, this is a grey area and the CBIC has issued conflicting clarifications.
• Practical approach: Most freelancers charge late payment interest without adding GST on the interest component. The amounts are usually small enough that the GST implication is negligible (18% of Rs. 1,500 interest = Rs. 270). Unless your CA advises otherwise, charging interest without GST is the common practice.