Freelancer Tax in Singapore: GST, IRAS, CPF & Invoicing (2026)

If you freelance in Singapore under any name other than your full NRIC name, you must register a sole proprietorship with ACRA (Accounting and Corporate Regulatory Authority) and obtain a Unique Entity Number (UEN).

Key points:

• Registration is done online via BizFile+ using Singpass
• You invoice clients under your registered business name, not your personal name
• The UEN — not your NRIC — is the identifier shown on commercial documents
• Annual renewal is required (1-year or 3-year terms)
• Before renewing with ACRA, you must top up your Medisave account for the previous year

If you trade strictly under your NRIC name, ACRA registration may be optional, but most freelancers register anyway to open a business bank account and look professional to clients.

Singapore's GST (Goods and Services Tax) is 9% as of January 2024 (raised from 8%). No further changes are announced for 2026.

Mandatory registration: Required when your taxable turnover exceeds S$1,000,000 in a 12-month period, or when you reasonably expect it to exceed that in the next 12 months. Most freelancers stay below this threshold and do NOT need to register.

Voluntary registration: Below S$1M you may register voluntarily. The main reason: claim input tax credits — reclaim the 9% GST you pay on business expenses (rent, equipment, software, professional services).

Once GST-registered, you must:

• Charge 9% GST on all invoices to Singapore clients
• File quarterly GST returns — even "nil returns" must be submitted on time
• Remain registered for at least 2 years (voluntary registration)

If you are GST-registered, IRAS requires these fields on every tax invoice:

• The words "Tax Invoice" prominently displayed
• Your business name, address, and GST registration number (UEN)
• Sequential invoice number — never reuse, never skip
• Invoice date
• Customer name and address
• Description of goods or services
• Amount payable excluding GST
• 9% GST shown separately (or GST-inclusive price with a clear statement)
• Total amount payable including GST

Simplified tax invoice: For transactions of S$1,000 or less (including GST), a simplified invoice with fewer fields is allowed.

Non-GST-registered freelancers: Issue a regular invoice (not a "Tax Invoice") with your UEN — no GST line. You cannot charge GST.

Sole proprietors and self-employed persons report business income as part of personal income tax (no separate company return).

Forms:

• Form B — for self-employed persons with business income
• Form B1 — for tax residents with employment + other income (some self-employed use B1 if income is simpler)

Filing: Online via myTax Portal using Singpass. Deadline for e-filing is 18 April of the Year of Assessment.

Progressive resident rates (YA 2026): Start at 0% for the first S$20,000 of chargeable income and scale up to 24% above S$1,000,000. You only file if net trade income exceeds S$6,000 or total income exceeds S$22,000.

Keep proper records for at least 5 years — IRAS can audit any return within that window.

Self-employed Singaporeans and Permanent Residents must contribute to CPF Medisave if net trade income exceeds S$6,000.

Key rules:

• Contribution rate is progressive — based on age and net trade income
• Rates are generally capped once annual net trade income reaches S$18,000
• You must top up Medisave for the previous year before renewing your business with ACRA
• CPF Ordinary Account and Special Account contributions are voluntary for self-employed

Medisave contributions are tax-deductible. Pay via the CPF Board's e-payment system or GIRO.

Foreigners on EP/S Pass who freelance generally do NOT contribute to CPF (CPF applies only to Singapore citizens and PRs).

IRAS is rolling out InvoiceNow — the national e-invoicing network based on the Peppol standard — for GST-registered businesses.

2026 timeline:

• From 1 April 2026: New voluntary GST registrants that are sole proprietorships, partnerships, or LLPs must transmit invoice data to IRAS via an IMDA-accredited InvoiceNow-Ready Solution
• By April 2031: All GST-registered businesses must use InvoiceNow

This means you'll need accounting software that supports InvoiceNow / Peppol, not just PDF invoices. EZ@Work supports Peppol e-invoicing for Singapore freelancers.

Non-GST-registered freelancers are not yet required to use InvoiceNow, but adoption is encouraged.

Mistake 1: Charging "GST" without being GST-registered. Only GST-registered businesses can charge GST. Doing so otherwise is illegal and IRAS can fine you.

Mistake 2: Missing the Medisave top-up before ACRA renewal. ACRA blocks renewal until your Medisave for the previous year is paid up. Plan ahead.

Mistake 3: Using your NRIC instead of UEN on invoices. Once ACRA-registered, the UEN is your business identifier — not your NRIC. Mixing them creates audit confusion.

Mistake 4: Forgetting quarterly GST nil returns. GST-registered freelancers must file every quarter even with zero sales. Late filing penalty: S$200 + S$200/month, capped at S$10,000.