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Guide

What Documents to Keep for GST on Overseas Software and Consulting Services in India

By TheFinanceBase Team 10 min read

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Keep a linked record set for every overseas software subscription or consulting engagement: the foreign supplier’s invoice or billing statement, contract or subscription terms, evidence of what service was received, proof of payment, any required self-invoice and payment voucher, and the GST calculation and return records. Indian GST rules require a true and correct account of imported services and reverse-charge supplies, with source documents and an audit trail that can be retrieved when requested.

Start with the document set, not the tax entry

Create one retrievable file—paper or electronic—for each supplier, invoice and service period. The file should let an auditor move from the supplier bill to the business purpose, service receipt, payment, recipient-created GST documents, tax payment and return entry without relying on an unexplained spreadsheet adjustment.

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  • Supplier record: the overseas invoice, receipt or account statement showing the supplier, service, billing period, amount and currency.
  • Commercial terms: the agreement, order form, statement of work, subscription terms, renewal notice and any credit or debit note.
  • Service evidence: records showing what was delivered, who used it and the period covered.
  • Payment evidence: bank, card or payment-platform confirmation matched to the supplier charge.
  • Recipient-side GST records: a self-invoice and payment voucher where the reverse-charge rules require them.
  • Tax and return trail: the GST calculation, payment evidence, ledger posting and return working for the transaction.
  • Audit trail: file names, links and version history sufficient to retrieve the original source document and connect it to the accounting records.

Keeping these items together does not by itself prove that GST is payable or that input tax credit is available. Those outcomes depend on the supplier and recipient locations, service classification, place of supply, reverse-charge rules and credit conditions for the particular transaction.

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Decide whether the payment is an import of service

Before creating a self-invoice or calculating reverse-charge tax, apply the three-part import-of-service test described by the Central Board of Indirect Taxes and Customs (CBIC):

  1. The supplier is located outside India.
  2. The recipient is located in India.
  3. The place of supply is in India.

All three elements matter. An overseas bank transfer, a foreign currency invoice or a supplier’s non-Indian website does not, on its own, establish an import of service. CBIC’s foreign-software FAQ specifically says that the currency used to pay is immaterial to the test. Paying in US dollars, euros or rupees therefore does not change the classification.

Use the correct place-of-supply rule

For cross-border services, the general rule under the Integrated Goods and Services Tax Act places the supply where the recipient is located, unless a specified exception applies. CBIC describes IT and IT-enabled services as generally following the recipient-location rule, while noting a qualification for an unregistered recipient when the supplier does not have the recipient’s address in its records.

Do not apply the general rule mechanically. Special provisions can apply to services connected with goods or immovable property, intermediary services and online information and database access or retrieval services, among other categories. A consulting engagement performed in relation to property outside India, an intermediary arrangement and a software product that falls within an online-information category may require a different analysis. Record the classification and the place-of-supply conclusion in the transaction file, including the facts that support it.

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The documents to retain for every overseas supplier

1. Foreign supplier invoice or billing record

Retain the original invoice, receipt, monthly statement or account billing record issued by the overseas supplier. It should identify the supplier, describe the software or consulting service, state the billing or subscription period, and show the amount and currency. For an online subscription, download the invoice from the account portal rather than relying only on an email notification. Preserve the original file and, if the portal changes, retain a dated export or screenshot that shows the account and invoice number.

Keep every credit note, debit note or replacement invoice that changes the charge. Link the adjustment to the original invoice so the amount in the ledger and the GST working can be explained.

2. Contract, order and subscription terms

Save the master service agreement, engagement letter, purchase order, order form, statement of work and the terms accepted when a subscription was started or renewed. Include renewal notices and amendments that change the service, users, territory, term or price. These records establish what was purchased and can be important when the invoice uses a short product code or a generic description such as “professional services.”

3. Evidence that the service was received and used

Keep practical evidence of delivery and business purpose, such as a consultant’s deliverables, project correspondence, meeting records, acceptance email, implementation ticket, usage report, administrator record, renewal confirmation or internal approval. For a software subscription, document the business team or users who received access and the period in which the account was active. For consulting, retain the statement of work, milestones, timesheets or deliverable acceptance where those exist.

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These examples are ways to substantiate the underlying service; the accounting rules require a true and correct account and relevant supporting documents rather than prescribing one universal form of service evidence.

4. Payment confirmation

Match the supplier invoice to the bank transfer advice, card statement, foreign-exchange settlement, payment-platform receipt or other payment confirmation. The payment record should show the date, amount, currency, beneficiary and transaction reference. If a payment covers several invoices, keep the allocation schedule that explains the split. Retain the payment voucher issued at the time of payment when the reverse-charge case described below applies.

5. Recipient-created GST documents

Where required, preserve the self-invoice raised by the Indian registered recipient on receipt of the service and the payment voucher issued when the foreign supplier is paid. Keep any subsequent debit or credit note and the internal approval that explains an adjustment. Store these documents beside—not instead of—the original overseas supplier invoice.

6. Tax calculation, payment and return reconciliation

Retain the worksheet or accounting calculation showing the taxable value, applicable IGST or other tax treatment, exchange-rate method used in the books, tax payable under reverse charge and the date and reference of payment. Keep the electronic cash-ledger or challan evidence, the relevant general-ledger entries and the return working that connects the transaction to the month in which it was reported. CBIC’s accounts-and-records requirements cover tax payable and paid, input tax and input tax credit claimed, as applicable.

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Documentation is not the same as credit eligibility. Keep the records needed to support an input-tax-credit position, but separately test the statutory conditions, business-use requirement, blocked-credit rules and payment timelines that apply to your facts.

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7. A retrievable electronic audit trail

Electronic storage is acceptable when it preserves the source document and its connection to the accounting entry. Use stable file names and a consistent folder structure, for example: supplier, invoice date, service period and invoice number. Keep links between the invoice, contract, payment, self-invoice, tax calculation and return line. Preserve metadata or version history when a document is replaced, and ensure the system can produce the underlying source file—not only a summary report—on demand.

When a self-invoice and payment voucher are required

CBIC’s FAQ addresses the common case of a registered Indian recipient receiving services from an unregistered person located outside India and being liable under reverse charge. In that situation, the registered recipient must create the recipient-side documents in addition to retaining the foreign supplier’s bill.

  1. Confirm the facts and liability. Verify that the supplier is outside India, the recipient is registered, the service is received in India for place-of-supply purposes and the transaction falls under the applicable reverse-charge provision.
  2. Issue the self-invoice on receipt. CBIC states that the registered person procuring services from a person located outside India must raise a self-invoice on the date of receipt of the supply in the described case. Record the supplier, service description, value, date and tax particulars required by the applicable invoice rules.
  3. Issue the payment voucher when paying. Section 31(3)(g) of the CGST Act requires a payment voucher in the specified reverse-charge circumstances. Issue it at the time payment is made to the foreign supplier and retain it with the payment confirmation.
  4. Report the transaction in the relevant return. CBIC’s FAQ says the applicable invoice or adjustment document is reported in the return for the month in which the supply takes place. Reconcile the reported value and tax with the self-invoice, ledger and payment records.
  5. Preserve the complete chain. Keep the original foreign invoice, contract, service evidence, self-invoice, payment voucher, payment proof, tax payment and return working in one indexed file.

The self-invoice rule is not a reason to manufacture a recipient invoice for every foreign payment. First establish that the transaction is the specified reverse-charge case. If the supplier is registered in India, charges Indian GST, or the arrangement falls under a different rule, document the facts and obtain transaction-specific advice rather than applying this procedure automatically.

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Do not confuse a supplier invoice deadline with self-invoicing

CBIC’s invoice-rule guidance generally requires an invoice for taxable services within 30 days of the supply, subject to specified exceptions. That timing concerns an invoice issued by a supplier. It is distinct from the recipient’s self-invoice-on-receipt requirement in the foreign-supplier reverse-charge situation. File the two records separately and label which party issued each one.

A practical filing workflow

  1. Open a transaction folder when the purchase is approved. Capture the supplier’s legal name, country, account identifier and whether it has an Indian GST registration or charges Indian GST.
  2. Classify the service as software access, implementation, consulting, intermediary work, property-related work, OIDAR or another category. Write down the place-of-supply rule considered and the conclusion.
  3. Collect commercial evidence before payment: contract or terms, purchase order, statement of work, invoice and any renewal or amendment.
  4. Capture receipt evidence after delivery or activation. Save deliverables, acceptance, usage or access records and the business-purpose approval.
  5. Match payment to the invoice. Record the bank or card reference, exchange details and any multi-invoice allocation.
  6. Create recipient GST documents where the reverse-charge facts require a self-invoice and payment voucher. Date them according to the applicable event and retain the originals.
  7. Reconcile before filing the invoice value, tax calculation, cash payment, ledger, return entry and any claimed credit. Have a second reviewer resolve differences rather than overwriting source files.
  8. Test retrieval periodically by selecting a closed transaction and confirming that an independent reviewer can open every linked document and follow the audit trail.

How common arrangements change the review

Arrangement Documents to obtain Key GST question
Foreign software subscription with no Indian GST shown Portal invoice, subscription terms, user or access record, payment proof, tax working and any required recipient-created documents Is the service an import under the three-part test, and does the applicable reverse-charge rule require a self-invoice and payment voucher?
Overseas consultant or agency Engagement letter, statement of work, deliverables or acceptance, invoice, correspondence, payment proof and GST reconciliation Is the service ordinary consulting or a category with a special place-of-supply rule, such as intermediary or property-related services?
Supplier issues a credit or debit note Original invoice, adjustment note, explanation, revised calculation and any return correction Which tax period and recipient-created record must reflect the adjustment?
Supplier claims to have an Indian GST registration or charges Indian GST Supplier tax invoice showing the GSTIN, contract, payment proof and registration details captured at the time Is this still the foreign-supplier reverse-charge case, or is the supplier making a domestic taxable supply?
Payment in a foreign currency Foreign-currency invoice, payment confirmation, conversion record and accounting entry Currency does not decide import status; supplier location, recipient location, service type and place of supply do.

Frequent record-keeping failures and fixes

  • Only the card statement is saved. Add the supplier invoice, terms and proof of what service the charge covered.
  • The invoice is generic. Attach the statement of work, subscription description or internal service-acceptance record that explains the business purpose.
  • The self-invoice is created months later. Review the date-of-receipt requirement and correct the process for future supplies; obtain advice on how to address an earlier omission.
  • The payment voucher is missing. If the specified reverse-charge case applies, issue and retain the voucher at payment, then reconcile it to the bank reference.
  • Tax is paid but cannot be tied to a return. Add a transaction identifier to the ledger, tax calculation, payment proof and return working.
  • Documents are scattered across employee mailboxes. Move originals to a controlled repository with access permissions, retention controls and a documented naming convention.
  • Every overseas payment is treated alike. Reperform the supplier-location, recipient-location, service-classification and place-of-supply analysis for each materially different arrangement.

What to review before closing the month

  • Every overseas software and consulting charge has an invoice or billing record and a contract or accepted terms.
  • The service period, users or deliverables and business purpose are documented.
  • Payment evidence agrees with the invoice value, currency and date.
  • The import-of-service and place-of-supply analysis is recorded, including any exception considered.
  • A self-invoice and payment voucher are present when the specified foreign unregistered-supplier reverse-charge case applies.
  • Tax payable, tax paid, ledger entries and the return month reconcile.
  • Any input-tax-credit claim has been tested separately against the applicable statutory conditions.
  • An electronic copy of each source document and its audit-trail link can be produced on demand.

CBIC’s official rules and FAQs reviewed on 13 October 2026 provide the framework summarized here, but GST notifications and interpretations can change. Recheck the current law and obtain India-specific professional advice when the service classification, place of supply, supplier registration status or credit position is unclear.

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