How to Invoice International Clients from India: Complete Practical Guide (2026)

Sending your first international invoice from India involves more than putting numbers in a document. This guide covers everything: what to include, how to handle GST, what currency to use, how to structure payment options, and how to ensure the money actually arrives in your Indian bank account.

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Step 1: Choose Your Invoice Currency

Rule: Invoice in the client's currency, not INR.

Never invoice in INR for international clients unless they specifically request it. It creates unnecessary FX conversion burden for them and means they see a number that doesn't make sense in their local context.

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Step 2: Invoice Numbering

Use a consistent, sequential format. This helps with your records, their AP system, and FIRA matching.

Recommended format: [CompanyCode]-[Year]-[Sequential]

Example: ACME-2026-0042

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Step 3: GST Treatment on International Invoices

International service revenue = Export of Services = Zero-rated IGST under LUT.

Before sending your first international invoice:

1. Register for GST if total annual turnover (all income) exceeds ₹20 lakh
2. File Letter of Undertaking (LUT) on GST portal before the financial year begins
3. Once LUT is filed: zero-rated treatment applies to all international service invoices On the invoice itself, include:

"Export of Services — IGST @ 0% (Zero Rated under Section 16 of IGST Act, 2017 — LUT No: [Your LUT Reference] for FY 2025-26)"

If you don't have GST registration yet: For income below ₹20 lakh threshold, you're not required to register. Simply omit the GST line.

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Step 4: Full Invoice Template

[YOUR COMPANY NAME]
[Your Address, City, State, PIN]
[GSTIN: XXXXXXXXXXXXXXXXX] [PAN: XXXXXXXXXX]
[Email] | [Website]

================================================
INVOICE
================================================
Invoice Number:  [ACME-2026-0042]
Invoice Date:    [15 May 2026]
Due Date:        [29 May 2026] (NET-14)

Bill To:
[Client Company Name]
[Client Address]
[City, State/Province, Postal Code]
[Country]

------------------------------------------------
Description                    Qty   Rate    Amount
[Service Description]          [X]   [USD X]  [USD X]
[Additional Line if needed]    [X]   [USD X]  [USD X]

Subtotal:                                USD [X]
Export of Services - IGST @ 0%:          USD 0
TOTAL DUE:                           USD [X]
------------------------------------------------

Export of Services — Zero Rated under LUT
(IGST Act Section 16, LUT Ref: [XX] for FY 2025-26)

PAYMENT OPTIONS:

[1] Instant Card Payment (preferred):
    https://pay.playto.so/[your-link]
    (Visa, Mastercard, Amex, Apple Pay)

[2] Bank Wire Transfer:
    Beneficiary:   [Your Company Name]
    Routing No:    [USD VBA Routing]
    Account No:    [USD VBA Account]
    Bank:          [Partner Bank Name]
    SWIFT:         [SWIFT Code]
    Reference:     ACME-2026-0042

Thank you for your business.

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Step 5: Delivery

Email with clear subject: Invoice ACME-2026-0042 – [Your Name/Company] – USD [Amount] – Due [Date]

Always include the payment link in the email body (not just the attachment). Client can pay in 60 seconds from the email without opening the PDF.

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Step 6: After Payment – FIRA Documentation

Every international payment = one FIRA (Foreign Inward Remittance Advice/Certificate).

Playto Pay** auto-generates FIRA per transaction.** Download from dashboard after each payment.

Keep FIRA with the corresponding invoice in your records folder. Your CA needs both for GST refund claims and ITR filing.

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Invoice Tools for Indian Businesses

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FAQ

Do I need to add GST to international client invoices? No. Export of services is zero-rated under LUT. Don't charge GST to international clients.

What currency should I invoice international clients in? Client's local currency: USD for US, GBP for UK, EUR for EU. Never INR for international clients.

What is FIRA and do I need it for every international invoice? FIRA is Foreign Inward Remittance Advice. Required per international payment for GST filing and ITR. Playto Pay auto-generates per transaction.

What payment terms are standard for international invoices? New client: 40-50% upfront. Established client: NET-14 to NET-30. Always include payment link for instant card payment alongside wire details.