Singapore Transfer Pricing 2026: Documentation Requirements, Related-Party Transactions and IRAS Compliance

If your Singapore company transacts with related parties — whether a parent company, a subsidiary, a sister company or even a sole director’s other business — transfer pricing rules apply. Many Singapore SMEs are unaware that they have transfer pricing obligations until IRAS raises an enquiry, at which point they face penalties, back-assessments and an uphill challenge to demonstrate that their inter-company prices were set at arm’s length.

This guide explains the transfer pricing framework in Singapore, who needs to maintain documentation, what that documentation must contain, and the important updates that took effect in 2026.

What Is Transfer Pricing and Why Does It Matter?

Transfer pricing refers to the prices charged for goods, services, loans and intangibles in transactions between related parties. When unrelated parties transact, market forces generally ensure that prices are set at arm’s length — reflecting what independent parties in similar circumstances would agree to. Related parties, however, may have the ability and incentive to set prices artificially to shift profits to lower-tax jurisdictions or entities.

IRAS monitors related-party transactions to ensure that Singapore’s tax base is not eroded. Under Section 34D of the Income Tax Act 1947, IRAS has statutory power to make transfer pricing adjustments — increasing or decreasing the transfer prices used — if it determines that the prices are not consistent with the arm’s length standard. Adjustments can result in significant additional tax, interest and penalties.

Who Are Related Parties?

Under Singapore’s transfer pricing rules, two entities are related parties if one controls the other, or both are under common control. Control is broadly construed and includes:

  • A company and its subsidiaries
  • Companies under a common parent (sister companies)
  • A company and its individual shareholder if the shareholder has a controlling interest
  • Partnerships and their partners
  • Trusts and their trustees or beneficiaries in certain circumstances

Common related-party transactions include: selling goods to a parent or subsidiary at a price below or above market value; charging management fees between group entities; providing intercompany loans; licensing intellectual property (trademarks, patents, software) between group entities; providing shared services to group entities; and seconding employees between entities.

The Arm’s Length Principle

The arm’s length principle requires that the price or conditions of a related-party transaction must be the same as what independent parties dealing at arm’s length in comparable circumstances would agree to. IRAS uses several transfer pricing methods to test whether the arm’s length standard is met:

  • Comparable Uncontrolled Price (CUP): Comparing the related-party transaction price to prices charged in comparable transactions between independent parties
  • Resale Price Method (RPM): Starting from the resale price to an independent buyer and deducting an appropriate gross margin
  • Cost Plus Method (CPM): Starting from the costs incurred and adding an appropriate mark-up
  • Transactional Net Margin Method (TNMM): Comparing the net profit margin from the transaction to net margins earned by comparable independent companies
  • Profit Split Method: Splitting combined profits from related transactions between the parties based on their relative contributions

The most appropriate method depends on the nature of the transaction, the availability of comparable data and the reliability of each method for the specific facts.

Who Must Prepare Transfer Pricing Documentation?

Not every company with related-party transactions must prepare formal transfer pricing documentation (TPD). The obligation is triggered when a company meets both of the following thresholds in the relevant financial year:

1. Gross revenue exceeding S$10 million from its trade or business

2. Related-party transactions exceeding the category thresholds below

The category-specific thresholds (effective from Year of Assessment 2026) are:

  • Sale or purchase of goods: S$15 million per category
  • All other categories (services, loans, royalties, etc.): S$2 million per category (increased from S$1 million from YA 2026 onwards)

If your company’s gross revenue is below S$10 million, or if your related-party transactions are below these thresholds, you are generally exempt from mandatory TPD. However, IRAS can still challenge your transfer prices if it determines they are not arm’s length — the exemption only applies to the documentation obligation, not to the arm’s length principle itself.

What Must Transfer Pricing Documentation Contain?

For companies that must prepare TPD, IRAS requires documentation to include:

  • A description of the company’s business and the group it belongs to
  • Details of the related-party transactions (nature, value, counterparties)
  • The transfer pricing method selected and why it is the most appropriate
  • Comparable information used (benchmarking data) and the analysis performed
  • Any assumptions or conditions that affected the pricing
  • Financial data supporting the analysis

IRAS places strong emphasis on contemporaneous documentation — this means the documentation must be prepared at or before the time the transaction occurs, not retrospectively when IRAS comes knocking. Documentation prepared after-the-fact carries far less weight and may not save you from penalties.

New for 2026: The Simplified and Streamlined Approach (SSA)

One of the most significant changes for Singapore taxpayers is the introduction of the Simplified and Streamlined Approach (SSA), effective for base-distribution activities from 1 January 2026 to 31 December 2028. Under SSA:

  • Companies engaged in base-distribution activities (distributors that bear limited risk and carry out routine distribution functions) may elect to use a prescribed return on sales (ROS) as their transfer price, replacing the need for detailed TP benchmarking
  • The prescribed ROS range is published by IRAS and updated periodically
  • Electing SSA provides certainty and significantly reduces documentation burden for eligible distributors

To elect SSA, the company must meet specific eligibility criteria and notify IRAS by the filing deadline. Consult the IRAS transfer pricing guidance for details on the SSA.

Domestic Loans: New 2026 Relief

For domestic related-party loans (loans between related Singapore entities, where both borrower and lender are subject to Singapore income tax), IRAS has provided welcome relief from 1 January 2025 onwards:

IRAS will not make transfer pricing adjustments, and will not require transfer pricing documentation, even if no interest is charged on the loan. This is a practical concession recognising that adjusting domestic intercompany loan interest would not affect Singapore’s overall tax revenue — any additional income for the lender would be offset by a corresponding deduction for the borrower.

Note that this relief applies only to domestic loans. Cross-border intercompany loans remain subject to the arm’s length standard and documentation requirements.

Penalties for Non-Compliance

IRAS takes transfer pricing non-compliance seriously. The penalties regime includes:

  • Surcharge: If IRAS makes a transfer pricing adjustment, it may impose a 5% surcharge on the amount of adjustment under Section 34E of the Income Tax Act. This is in addition to the additional tax payable.
  • Failure to maintain documentation: Companies that fail to maintain adequate contemporaneous documentation when required may face a fine of up to S$10,000.
  • General late/under-payment penalties: Standard tax penalties (up to 200% of additional tax for evasion) can apply if the transfer pricing breach amounts to tax fraud or negligent under-reporting.

The 5% surcharge is particularly significant because it applies on top of the tax adjustment — not as a replacement. A large transfer pricing adjustment on a multi-million-dollar intercompany transaction can therefore generate substantial additional tax liability.

Advance Pricing Arrangements (APAs)

Companies with significant related-party transactions can apply for an Advance Pricing Arrangement (APA) from IRAS. An APA is an agreement between IRAS and the taxpayer on the transfer pricing method to be applied to specified transactions for a set period (typically three to five years). An APA provides certainty and protection from transfer pricing adjustments during the agreed period.

Singapore also participates in bilateral APAs (BAPAs) with treaty partners, providing mutual agreement that prevents double taxation where cross-border transactions are involved.

Practical Steps for Singapore SMEs

If your company transacts with related parties, here is what you should do:

1. Map all related-party transactions for the current financial year — loans, management fees, goods sales, services, royalties

2. Check the revenue and threshold tests to determine whether formal TPD is required

3. Benchmark key transactions using publicly available databases (Bureau van Dijk’s Orbis, for example) or engage a transfer pricing specialist

4. Document contemporaneously — prepare your transfer pricing file before the transaction occurs or at the time the transaction takes place

5. Review domestic loan arrangements — if no interest is charged, confirm whether the domestic relief applies

6. Consider SSA if you have base-distribution activities and want certainty without complex benchmarking

Transfer pricing is a specialist area. Raffles Corporate Services works with qualified tax advisers to assist clients with related-party transaction reviews, documentation preparation and IRAS correspondence.

For the latest Singapore financial news and tax updates, monitoring IRAS e-tax guides and Budget announcements regularly is important. If you need legal advice on an IRAS audit or transfer pricing dispute, seeking professional advice early is strongly recommended. Good business investment planning incorporates tax efficiency across related-party structures.

To speak with the team at Raffles Corporate Services, you can email [email protected] or call, SMS, or WhatsApp +65 8501 7133. We are happy to assist with any queries.

— The Editorial Team, Raffles Corporate Services