Refund of GST paid in case of customer defaulting payment

• The Verdict: No, you cannot claim a refund or adjust the ₹9,000 GST paid to the government. The GST law makes no provision for tax reliefs or adjustments on bad debts arising from customer defaults.

• The Action Plan: Write off the full gross value of ₹59,000 as a "Bad Debt" in your financial books so you can at least claim it as a tax-deductible expense under Section 36(1)(vii) of the Income Tax Act when filing your annual income tax return.

The existing answer is correct that GST cannot be directly refunded for a payment default alone. But the full picture is more nuanced.

When GST CANNOT be adjusted:
- The customer simply refuses to pay (bad debt). Under GST law, tax liability is on the supplier at the time of supply, not on receipt of payment. So if goods or services were delivered and accepted, GST stays with the government even if the buyer does not pay.

When GST CAN be adjusted through a credit note (Section 34 CGST Act):
- The customer returns the goods
- The services are found deficient or disputed and consideration is reduced through a formal agreement
- A trade discount is given post-sale

In those cases, issue a credit note and reduce your output tax liability in the next GSTR-3B filing. The credit note must be issued within the earlier of: the date of filing the annual return for that FY, or September 30 of the following FY.

For pure bad debts (no return, no price reduction), GST is not recoverable. Your option is to write off the gross amount (including GST) as a bad debt deduction under Section 36(1)(vii) of the Income Tax Act, subject to conditions.

Action: if the customer can return the goods (even partially), issue a credit note before the window closes. Otherwise, document the default for income tax bad debt relief.

For the full credit note and late fee structure across GST returns, this [GST late fee and penalty guide](https://taxgarden.in/blog/gst-late-fee-interest-penalty-gstr-3b-gstr-1-gstr-9-guide) covers the adjustment and filing implications.