DTD Mistakes to Avoid (2026)

The Double Tax Deduction for Internationalisation (DTD) offers 200% tax deduction on your first S$400K of eligible overseas market expansion expenses per Year of Assessment. But many SMEs make avoidable mistakes that trigger IRAS queries or outright rejection.

The Biggest Misconception

The mistake: Expecting DTD to work like a cash grant (e.g., PSG or EDG).

Why it matters: DTD is a tax deduction, not a cash payout. You do not receive money back directly. Instead, you reduce your taxable income.

How it actually works:

• Spend S$50K on eligible overseas activities
• Claim 200% deduction = S$100K deducted from taxable income
• At 17% corporate tax rate, you save S$17K in taxes
• You do NOT receive S$50K or S$100K in cash

The fix: Budget for DTD as a tax efficiency tool, not a funding source. If you need upfront cash, consider EDG or MRA instead.

Automatic vs Approval-Required: Know the Difference

The mistake: Assuming all internationalisation activities qualify automatically.

Why it fails: Only 9 specific activities qualify for automatic DTD. Everything else needs prior approval from EnterpriseSG before you incur expenses.

Automatic activities (no approval needed):

1. Overseas business development trips
2. Overseas trade fairs (participation)
3. Local trade fairs approved by STB/ESG
4. Overseas sales offices (initial setup)
5. Overseas advertising and promotional materials
6. Overseas market design registration
7. Overseas market trademark registration
8. Overseas market patent registration
9. Product certification for overseas markets

Requires prior approval:

• Any activity NOT on the automatic list
• Expenses exceeding S$400K per YA
• Virtual trade fairs (case-by-case)
• Specialised market research

The fix: Check if your activity is on the automatic list. If not, apply to EnterpriseSG BEFORE incurring the expense.

Top 5 Documentation Mistakes

Mistake 1: Missing Receipts for Overseas Trips

The problem: Claiming travel expenses without supporting documents.

What IRAS expects:

• Flight booking confirmations with amounts
• Hotel invoices (not just bank statements)
• Per diem records with dates and locations
• Business meeting schedules or trade fair registration

The fix: Keep every receipt. Create a trip log linking each expense to the business purpose.

Mistake 2: Vague Expense Descriptions

The problem: Receipts that say “consulting” or “services” without context.

Why it fails: IRAS cannot verify the expense relates to internationalisation.

The fix: Ensure invoices specify:

• The overseas market targeted
• The service provided (e.g., “market research for Vietnam entry”)
• The business development objective

Mistake 3: No Proof of Overseas Connection

The problem: Claiming expenses without evidence they relate to overseas expansion.

Example: Marketing materials that could be used domestically.

The fix: Keep evidence such as:

• Foreign language versions of materials
• Shipping records to overseas addresses
• Trade fair booth registration (overseas event)
• Foreign customer correspondence

Mistake 4: Mixed Domestic and Overseas Invoices

The problem: Single invoices combining local and overseas expenses.

Why it fails: IRAS cannot determine which portion qualifies.

The fix: Request separate invoices for domestic vs overseas work, or have vendors clearly itemise the breakdown.

Mistake 5: No Records Retention

The problem: Discarding documentation after filing taxes.

Why it fails: IRAS can audit DTD claims up to 5 years after filing.

The fix: Keep all supporting documents for at least 5 years after the relevant Year of Assessment.

Timing Errors That Get Claims Rejected

Error 1: Starting Before Approval

The mistake: Incurring expenses for approval-required activities before getting EnterpriseSG clearance.

The result: Those expenses cannot be claimed, even if approval comes later.

The fix: For non-automatic activities, wait for written approval before signing contracts or making payments.

Error 2: Missing the Tax Filing Deadline

The mistake: Not claiming DTD in your annual tax return.

Why it matters: DTD is claimed via your Form C-S/Form C, not through a separate grant portal. If you miss the filing deadline, you miss the deduction.

Key dates:

• Paper filing: 30 November
• e-Filing: 15 December

The fix: Brief your tax preparer on DTD claims. Add it to your tax filing checklist.

Error 3: Wrong Year of Assessment

The mistake: Claiming expenses in the wrong YA.

How it works:

• Expenses incurred in FY2025 (1 Jan - 31 Dec 2025)
• Claimed in YA2026 tax filing (filed in 2026)

The fix: Match expenses to the correct YA based on when they were incurred, not when you paid.

How to Structure a Compliant DTD Claim

Step 1: Track Expenses Throughout the Year

Create a dedicated spreadsheet with:

• Date of expense
• Vendor name
• Amount (SGD)
• Activity type (match to automatic list)
• Overseas market targeted
• Supporting document reference

Step 2: Verify Activity Eligibility

For each expense, confirm:

Step 3: Prepare for Tax Filing

Before your tax preparer files:

Step 4: Retain Records

After filing:

Quick Reference: DTD Facts

Related Tax Filing Guides

• IRAS Tax Incentives Directory — overview of all IRAS incentives
• DTDi Budget 2026 Changes — expanded S$400K cap and new activities
• DTD vs MRA Decision Matrix — tax deduction vs grant reimbursement
• EIS Claim Checklist — if you also claim innovation deductions
• CIT Rebate & Cash Grant YA 2026 — automatic rebate you also receive

Related Guides

• Double Tax Deduction for Internationalisation
• Common Grant Pitfalls Guide
• Singapore Grants Glossary

Official Links

• IRAS DTD Overview
• EnterpriseSG DTD Information