Transfer pricing is one of the most scrutinised areas of Singapore corporate tax. If your company transacts with related parties — whether parent companies, subsidiaries, or associated enterprises — the prices you charge for those transactions must reflect what independent parties would have agreed. This is the arm’s length principle, and IRAS takes it very seriously.

This guide explains Singapore’s transfer pricing framework, the documentation requirements under the Income Tax Act, and the SME exemptions that may reduce your compliance burden in 2026.

What Is Transfer Pricing?

Transfer pricing refers to the prices charged between related companies (or “related parties”) for the supply of goods, services, loans, and use of intangibles across borders or within Singapore. Where these prices are not arm’s length — i.e., they differ from what unrelated parties would have agreed — IRAS may adjust the prices to reflect fair market rates and tax the adjusted income accordingly.

Singapore’s transfer pricing rules are contained in Section 34D of the Income Tax Act 1947 and are supplemented by the IRAS Transfer Pricing Guidelines (Sixth Edition, 2021). These guidelines are broadly consistent with the OECD Transfer Pricing Guidelines.

Who Is Affected?

Transfer pricing rules apply to Singapore companies that have related party transactions (RPTs) with:

  • Parent companies, subsidiaries, or fellow subsidiaries (domestic or overseas)
  • Associated companies (where there is at least 25% common ownership)
  • Branches of the same legal entity
  • Any entity over which the Singapore company exercises control, or vice versa

Both cross-border and domestic transactions between related parties may be subject to IRAS scrutiny, though the primary focus has historically been on cross-border transactions where there is a risk of profit shifting.

The Arm’s Length Principle

The arm’s length principle requires that related party transactions be priced as if they were conducted between independent parties under comparable circumstances. IRAS recognises five transfer pricing methods approved by the OECD:

  • Comparable Uncontrolled Price (CUP) Method: Compares the price charged in a related party transaction to a comparable transaction between independent parties.
  • Resale Price Method: Starts with the resale price at which a product is resold to an independent customer, then subtracts a gross margin.
  • Cost Plus Method: Adds an appropriate markup to the supplier’s costs.
  • Transactional Net Margin Method (TNMM): Examines the net profit margin from a controlled transaction relative to an appropriate base (costs, sales, assets). This is the most commonly used method in Singapore.
  • Profit Split Method: Splits the combined profit of related parties based on their relative contributions.

Companies must select the most appropriate method given their circumstances and apply it consistently.

Transfer Pricing Documentation Requirements

Since Year of Assessment 2019, Singapore companies with related party transactions exceeding certain thresholds are legally required to prepare contemporaneous transfer pricing documentation. This means documentation must exist at the time the transaction is entered into, not created after an IRAS audit begins.

When Documentation Is Required

You must prepare transfer pricing documentation if, for the relevant financial year:

  • Your annual gross revenue exceeds S$10 million, OR
  • You entered into a related party transaction for which a specific transfer pricing method has been applied

Additionally, the documentation threshold per transaction category is:

  • Related party sales and purchases of goods: S$15 million per category
  • Related party loans: S$15 million per loan
  • Related party services, royalties, and all other transactions: S$1 million per category

If your transactions fall below these thresholds, you are exempt from preparing formal documentation — but you must still apply the arm’s length principle.

What the Documentation Must Include

Transfer pricing documentation must include:

  • Group information: industry overview, organisational structure, description of the MNE group’s business
  • Entity information: description of the Singapore company’s business, related party transactions, functional analysis (functions performed, assets employed, risks assumed)
  • Transfer pricing analysis: identification of the tested party, selection and application of the transfer pricing method, benchmarking analysis (including comparable companies or transactions)

IRAS expects documentation to be updated annually and available within 30 days of a request during an audit.

SME Exemptions from Documentation

Recognising that formal transfer pricing documentation can be burdensome for small businesses, IRAS provides specific exemptions:

Routine Support Services Exemption

Where a Singapore company provides or receives routine support services (such as accounting, HR, IT support, or administrative services) from a related party, and the charge is determined using a cost-plus markup of 5%, IRAS will generally not require documentation for those transactions — provided the arrangement qualifies as a routine support service under the Guidelines.

Domestic Related Party Transactions

Domestic related party transactions (between two Singapore entities with the same tax rate) generally present lower transfer pricing risk. While they are technically subject to the arm’s length principle, IRAS focuses enforcement resources primarily on cross-border transactions.

Administrative Concession for Non-Documentation Companies

Companies below the S$10 million gross revenue threshold are not required to prepare formal documentation, though they should maintain records sufficient to demonstrate arm’s length pricing if queried.

IRAS Enforcement and Surcharges

Where IRAS determines that transfer prices are not arm’s length, it may make transfer pricing adjustments under Section 34D. Since 2019, IRAS also has the power to impose a 5% surcharge on any upward transfer pricing adjustment — on top of additional tax and interest.

The surcharge underscores the importance of getting transfer pricing right upfront rather than relying on retrospective corrections. Companies that have formal documentation in place demonstrating a good-faith arm’s length analysis are in a much stronger position to resist adjustments and avoid the surcharge.

Advance Pricing Arrangements (APAs)

For companies that want certainty on their transfer pricing, IRAS offers Advance Pricing Arrangements (APAs) — agreements between a taxpayer and IRAS (and, in bilateral APAs, between IRAS and a foreign tax authority) on the appropriate transfer pricing methodology for a set of future transactions.

APAs typically cover five years and can be renewed. They provide complete certainty that IRAS will not challenge the agreed methodology during the APA period, making them particularly valuable for companies with large or complex intercompany transactions.

Transfer Pricing and Corporate Tax Filing

Related party transactions must be disclosed in the Singapore tax return. Companies required to prepare transfer pricing documentation must also complete and file the Related Party Transactions (RPT) Schedule as part of their corporate income tax return (Form C). This schedule discloses the nature and value of related party transactions by category.

For assistance with transfer pricing documentation and corporate tax compliance, see our Accounting and Tax Services page or our dedicated Corporate Tax Filing service.

Practical Steps for 2026

  • Review all intercompany transactions from your most recent financial year and identify those above the documentation thresholds.
  • Ensure transfer pricing documentation is contemporaneous — do not wait until the tax filing deadline.
  • Benchmark intercompany service fees and loan interest rates against market comparables at least annually.
  • Consider whether an APA is appropriate for your largest or most contentious intercompany transactions.
  • Disclose related party transactions accurately in your Form C RPT Schedule.

Need help with transfer pricing documentation or corporate tax compliance?
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