Transfer Pricing Documentation in Singapore 2026: Who Must Prepare It and What It Must Contain

Transfer pricing is one of the most consequential — and most under-documented — tax exposures faced by Singapore companies that transact with related parties overseas. IRAS audits in this space have risen sharply over the last three years, and Singapore’s transfer pricing documentation rules now bite at much lower thresholds than most directors realise.

Raffles Corporate Services works with a panel of experienced Singapore law firms who offer cost-effective and efficient legal service and advice. This article is general information only and is not legal advice.

This guide explains who must prepare contemporaneous transfer pricing documentation in 2026, what the documentation must contain, when the safe harbours apply, and what to expect during an IRAS review — together with practical pointers for groups that have only recently grown into the regime.

1. What transfer pricing means in Singapore

Transfer pricing is the pricing of goods, services, intangibles, loans and other arrangements between related parties — typically parent, subsidiary, sister and associated companies. Singapore’s rules require these intra-group transactions to be priced on an arm’s length basis, as if conducted between independent parties.

The statutory foundation is section 34D of the Income Tax Act, which empowers IRAS to adjust transfer prices found not to be at arm’s length, and the Income Tax (Transfer Pricing Documentation) Rules 2018, which set out the documentation requirements.

2. The three pillars of the regime

3. Who must prepare contemporaneous TP documentation?

A Singapore taxpayer must prepare TP documentation if it meets both of these thresholds in the relevant financial year:

• Gross revenue (from the trade or business) more than S$10 million; AND
• It has related-party transactions exceeding one of the category thresholds in the Rules.

The category thresholds (per related party type, per FY) are:

Smaller related-party transactions do not need full documentation but should still be priced at arm’s length.

4. What the TP documentation must contain

IRAS’ e-Tax Guide on Transfer Pricing (7th Edition, 2024) sets out a two-layer documentation requirement:

Group-level (master file analog)

• Worldwide organisation structure;
• Description of the group’s business and value chain;
• Important intangibles and how they are owned and exploited;
• Intercompany financial activities;
• Consolidated financial and tax positions.

Entity-level (local file analog)

• Description of the Singapore taxpayer’s business and operating structure;
• Functional analysis of each related-party transaction (functions performed, assets used, risks assumed — FAR analysis);
• Selection and application of the most appropriate transfer pricing method;
• Benchmarking study supporting the arm’s length range;
• Financial information of comparable companies.

The documentation must be prepared not later than the filing due date of the Form C for the relevant year of assessment, and retained for at least five years.

5. The five accepted transfer pricing methods

IRAS accepts the OECD-recognised methods:

• Comparable Uncontrolled Price (CUP)
• Resale Price Method (RPM)
• Cost Plus Method (CPM)
• Transactional Net Margin Method (TNMM)
• Profit Split Method

The choice depends on the facts, the availability of reliable comparables and the function performed. TNMM remains the most commonly used in practice because broad benchmarking is often more reliable than narrow transaction-level data.

6. Safe harbour for routine support services

Singapore offers a useful safe harbour for routine intra-group services. Where the Singapore entity provides certain routine services (e.g. administrative support, IT helpdesk, HR) and applies a 5% cost mark-up on the costs of providing those services, IRAS will not challenge the mark-up. The full list of qualifying services is in Annex C of the IRAS e-Tax Guide. For groups providing only routine services this is a major compliance simplification.

7. Related-party loans

For Singapore-related-party loans not exceeding S$15 million, IRAS publishes a yearly indicative margin on top of an appropriate base reference rate (e.g. SORA). If you adopt the indicative margin, IRAS will accept the interest rate as arm’s length without further documentation. For 2026, the indicative margin is published on the IRAS website at the start of each year.

For larger loans, or loans denominated in foreign currency, a full credit-rating analysis is required to justify the spread.

8. Country-by-country reporting (CbCR)

Singapore-headquartered groups with consolidated group revenue of at least S$1.125 billion in the preceding year must file a CbC Report with IRAS. The report sets out revenue, profit, tax paid, employees and tangible assets per jurisdiction. Singapore receives CbCR exchanges from foreign jurisdictions for inbound groups whose ultimate parent files there.

9. What happens during an IRAS TP review

1. IRAS issues a TP review letter requesting documentation, sample invoices and intercompany agreements.
2. The taxpayer typically has 30 to 60 days to respond.
3. IRAS may run benchmarking against Singapore comparables.
4. If IRAS proposes an adjustment, the taxpayer can negotiate, accept or — within statutory limits — appeal.
5. If an adjustment is finalised, a 5% surcharge applies under section 34E of the ITA, on top of any tax, interest and standard penalties.

Where the adjustment causes double taxation, the taxpayer can pursue a Mutual Agreement Procedure (MAP) under a relevant Double Tax Agreement, or apply for an Advance Pricing Arrangement (APA) for future years.

10. Practical pointers for newly in-scope groups

• Map every related-party flow. Many groups underestimate the number of intercompany transactions — management charges, secondment costs, IT recharges, guarantees and royalties are easily overlooked.
• Sign intercompany agreements. Verbal arrangements between related parties are the single most common reason IRAS challenges a transfer price.
• Document concurrently, not retrospectively. Documentation prepared after an IRAS query is typically given less weight.
• Reuse the global TP study sensibly. Singapore-specific analysis is still required even where a global TP study exists.
• Refresh benchmarks every three years and update financial data annually.
• Watch DTA interactions. For cross-border services and royalties, coordinate with withholding tax planning — see our guide on withholding tax in Singapore.

11. How Raffles Corporate Services helps

We prepare contemporaneous Singapore TP documentation for groups newly in scope, refresh benchmarking studies for existing files, and coordinate with overseas advisors on master-file consistency. For complex inbound structures we work with experienced Singapore tax counsel on APA applications and IRAS reviews. If your Singapore entity is approaching S$10 million in revenue or has cross-border related-party flows above S$1 million in any category, you should be talking to us before your next Form C filing.

Transfer pricing is no longer a “global head office” issue. Singapore directors are personally responsible for accurate corporate tax returns — which means getting the TP file right is non-negotiable.

— The Editorial Team, Raffles Corporate Services