Invoicing Foreign Clients: The Rules Indian Freelancers Miss
- The mandatory endorsement line required on every invoice under Rule 46 of the CGST Rules.
- How to record foreign currency billings alongside the appropriate exchange rate for GST filings.
- Why tracking FIRAs against individual invoice numbers prevents retroactive tax demands.
When you send an invoice to a client in Delaware or London, you cannot just grab an off-the-shelf template, enter a total in USD, and call it a day. Under Section 2(6) of the IGST Act, cross-border professional services only qualify as an export if your paperwork satisfies strict statutory conditions. The invoice is the primary audit trail proving you met them.
INVOICE SPECIFICATIONS: DOMESTIC VS. EXPORT UNDER LUT
| INVOICE ELEMENT | DOMESTIC CLIENT | FOREIGN CLIENT (LUT) |
|---|---|---|
| Tax Charged | 18% (CGST + SGST or IGST) | 0% (Zero-rated supply) |
| Mandatory Text | Tax Invoice | Export supply under LUT without payment of IGST |
| Billing Currency | Strictly INR | Foreign currency (with INR conversion noted) |
The Non-Negotiable Invoice Endorsement
If you export services under a Letter of Undertaking (LUT)—which you should file annually to avoid paying 18% IGST upfront—every invoice must carry a precise legal declaration. Leaving this out is the single most common reason tax officers flag zero-rated exports during desk scrutiny.
Currency, Conversion, and Rule 46
You can legally bill in USD, EUR, or GBP, but your Indian books require an INR equivalent. According to filing procedures outlined on the GST Portal, you should translate the invoice value using the reference exchange rate published by the Reserve Bank of India or the CBIC notification rate applicable on the invoice date.
Your invoice must also state the recipient’s overseas address clearly and explicitly identify the place of supply as outside India.
A clean PDF generated on generic billing software might satisfy your client’s accounts payable team, but your protection during a GST audit rests entirely on whether that PDF includes the statutory LUT declaration and matches your bank remittance certificate.
This post is general information only and does not constitute tax, financial, or investment advice. Consult a qualified professional for your specific situation.