Singapore’s transfer pricing regime has tightened materially over the last five years. By 2026, the Inland Revenue Authority of Singapore (IRAS) routinely requests transfer pricing documentation (TPD) on audit, and the surcharge for non-compliance — a flat 5% on transfer pricing adjustments — is unmoved. Yet many Singapore SMEs and multinational subsidiaries are still under-equipped on TPD preparation.
This guide is a 2026 refresher on when Singapore companies must prepare TPD, what it has to contain, what the safe harbours look like, and how IRAS approaches enforcement.
The Legal Framework
Singapore’s transfer pricing rules trace to Section 34D of the Income Tax Act 1947 (the arm’s length principle) and Section 34F (the TPD obligation). IRAS’s e-Tax Guide on Transfer Pricing (sixth edition, 2024) provides the practical roadmap.
The arm’s length principle requires that transactions between associated parties be priced as if they were between independent parties. Where IRAS forms the view that pricing is not at arm’s length, it can adjust the taxable income upwards and apply the 5% surcharge.
Who Must Prepare TPD?
The mandatory TPD threshold applies if a Singapore company:
- Has gross revenue exceeding S$10 million for the financial year; AND
- Entered into qualifying related-party transactions exceeding the following thresholds in that year.
| Transaction Type | Threshold |
|---|---|
| Purchase of goods from related parties | S$15 million |
| Sale of goods to related parties | S$15 million |
| Loans owed to related parties | S$15 million |
| Loans receivable from related parties | S$15 million |
| Any other transaction (services, royalties, leases, guarantees, etc.) | S$1 million per category |
If the threshold is exceeded for any single category, TPD is mandatory for that category for that YA.
What “Related Party” Means
Section 34D defines associated persons broadly:
- Parent, subsidiary, sister companies (50% direct or indirect ownership).
- Joint ventures with 25%+ common shareholding.
- Common control through directors or management.
- “Effectively controlled” by common shareholders.
The definition catches typical multinational structures and most family-business groups.
Contents of a Compliant TPD
IRAS expects a two-tier structure (master file + local file is a Pillar Two parallel — for Singapore-only TPD, a single document covers both tiers).
1. Group-Level Information
- Worldwide organisational chart.
- Description of the group’s business and value chain.
- Intangibles owned by the group and DEMPE (development, enhancement, maintenance, protection, exploitation) analysis.
- Financing arrangements and consolidated financial statements.
2. Local Entity Information
- Description of the Singapore entity’s business and management structure.
- Key competitors.
- Detailed description of each material related-party transaction.
- Functional analysis — functions, assets, risks (FAR).
- Selected transfer pricing method and reasoning.
- Comparability analysis with benchmark studies.
- Financial information used to apply the method.
- Conclusion on arm’s length pricing.
3. Year-Specific Information
- Year-on-year comparison of related-party transaction values.
- Material business changes.
- Any APAs (Advance Pricing Agreements) or MAPs (Mutual Agreement Procedures).
Methods Accepted by IRAS
IRAS recognises the OECD’s five methods:
- Comparable Uncontrolled Price (CUP) — best for commodities and identical goods/services.
- Resale Price Method (RPM) — best for distributors.
- Cost Plus Method (CPM) — best for routine manufacturers and contract service providers.
- Transactional Net Margin Method (TNMM) — the most-used in practice, suitable where direct comparables are scarce.
- Profit Split Method — best for highly integrated operations with unique intangibles.
Other methods may be used if better. The choice of method must be justified in the TPD.
The Indicative Margin for Routine Services
IRAS publishes a routine services safe harbour: a 5% cost mark-up is accepted as arm’s length for “routine support services” (e.g., bookkeeping, HR support, IT help-desk). This is helpful for intra-group service centres. Note: the routine services list is specifically defined and does not cover R&D, strategic management, or financial services.
Loans Between Related Parties — The Interest-Free Loan Rule
For domestic Singapore-to-Singapore related-party loans, IRAS publishes annual “indicative margins” — a benchmark spread above SORA that can be used safely. For YA2026 the indicative margin remains a modest spread (check the latest IRAS update).
Cross-border related-party loans must be priced using full TPD. Interest-free or below-market interest cross-border loans typically trigger TPD adjustments.
Timing
- TPD must be contemporaneous — prepared by the time the Form C is filed (30 November of YA).
- TPD must be retained for 5 years.
- On IRAS request, TPD must be provided within 30 days.
Penalties for Non-Compliance
| Default | Consequence |
|---|---|
| No TPD prepared | Up to S$10,000 fine per YA |
| Pricing adjustment by IRAS | 5% surcharge on the upward adjustment (no penalty cap) |
| Inability to prove arm’s length | IRAS may apply higher adjustment |
| Repeated non-compliance | Director / officer personal liability under broader ITA penalty regime |
The 5% surcharge cannot be remitted by way of voluntary disclosure unless under specific IRAS-approved programmes.
Country-by-Country (CbC) Reporting
For multinational groups with consolidated revenue exceeding EUR 750 million, the Ultimate Parent Entity (UPE) or a designated Constituent Entity must file CbC reports under Singapore’s CbC reporting regime. Singapore subsidiaries within such groups should ensure their TPD aligns with the group’s CbC narrative. See our coverage of BEPS Pillar Two and the 15% global minimum tax.
Advance Pricing Agreements (APAs)
For complex or high-value related-party transactions, an APA can provide certainty for up to 5 years. APAs are negotiated with IRAS (unilateral) or with IRAS and the relevant foreign tax authority (bilateral or multilateral).
APA processing typically takes 18–36 months. The upfront cost is significant (S$200,000+ in professional fees) but the certainty justifies it for material transactions.
For more on advance certainty mechanisms, see our piece on IRAS Advance Ruling procedure and strategy.
Common 2026 Issues IRAS Is Auditing
- Management fees charged from Singapore HQ to overseas subsidiaries — IRAS wants substance evidence of services actually provided.
- Royalty payments to offshore IP-holding entities — DEMPE analysis required.
- Intra-group financing — interest-free or below-market loans trigger reviews.
- Cost-sharing arrangements for R&D and digital infrastructure.
- Procurement hubs in Singapore servicing overseas group entities.
Practical Steps to Get TPD-Ready
- Map your related-party transactions and categorise by type.
- Determine which exceed the TPD thresholds.
- Engage a transfer pricing adviser (typically a Big Four or specialist boutique) to prepare the documentation.
- Update annually — TPD is not a one-time exercise.
- Maintain supporting evidence (intercompany agreements, time logs, FAR analysis source documents).
- If material transactions are forecast, consider an APA for certainty.
For more general tax positioning, see our Singapore Corporate Tax 2026 guide and Section 33 GAAR overview.
We work with international tax counsel to help our SME and mid-market clients prepare cost-effective TPD. If you have related-party transactions and have not yet prepared TPD, talk to us.
— The Editorial Team, Raffles Corporate Services