Free Invoice Generator for Singapore Freelancers — GST 9%, SGD, PayNow

Singapore is a clear, well-documented tax jurisdiction — the rules are publicly available on the IRAS website, the registration thresholds are explicit, and PayNow makes domestic collection effectively free and instant. The two questions every Singapore freelancer has to answer up front are: am I registered for GST, and am I a registered ACRA business or invoicing under my own name? Both decisions affect what goes on the invoice.

What to put on a Singapore freelance invoice

Standard fields:

• Your name (own full name, or your registered business name + UEN if ACRA-registered).
• Your UEN (Unique Entity Number) — required if registered with ACRA. Goes on the invoice for client AP records.
• Your GST registration number — only if GST-registered. Then the document must also be labelled "Tax Invoice" at the top.
• Your address as registered with ACRA / IRAS.
• Client's legal name and address matching their engagement letter.
• Unique invoice number. Sequential.
• Issue date and due date.
• Line items: description, quantity, rate, amount.
• Subtotal, GST line (if applicable), total.
• Currency: SGD primarily; print the ISO code if mixed-currency clients.
• Payment instructions. PayNow ID (UEN/NRIC), bank name + account number, Wise reference for cross-border.

If GST-registered, IRAS has a tax-invoice content checklist and your invoices must include all of it: tax invoice statement, supplier name + GST reg number + address, customer name + address, description, quantity, GST amount per line, subtotal, total including GST.

GST 9% — the registration decision

The threshold:

• Compulsory registration when your taxable turnover (B2B + B2C, before deductions) exceeds S$1 million in a 12-month rolling window. You must register within 30 days of crossing.
• Voluntary registration is allowed below the threshold. Useful if your clients are mostly GST-registered businesses (they reclaim input GST) and you have material input costs.
• Most solo freelancers stay below S$1M and do not register. Their invoices have no GST line.

If you do register:

• Charge 9% standard rate (since 1 Jan 2024) on supplies to Singapore customers.
• Charge 0% on exports of services (overseas customer, services not linked to Singapore land).
• File quarterly GST returns via myTax Portal. Due one month after each quarter end.
• Reclaim input GST on business expenses.

The mistake most over-eager freelancers make: voluntary registration when serving mostly overseas / B2C clients. You take on quarterly filing overhead in exchange for negligible input-tax recovery. Run the numbers before electing.

Income tax — the year-end side

Self-employed income flows into your Form B annual return:

• Tax year follows calendar year (Jan-Dec); return due 15 April (paper) / 18 April (e-file) of the following year.
• Net trade income = revenue − allowable deductions (rent of office space, software, internet, phone, professional fees, depreciation on equipment, MediSave contributions for self-employed).
• Progressive personal rates: 0% on first S$20k taxable, then bracket-based up to top marginal rate.
• IRAS often issues a No-Filing Service (NFS) prefilled return for sole proprietors with simple finances — verify and submit.
• Maintain records 5 years.

For Singapore citizens / PRs aged 21+, MediSave contributions as a self-employed person are mandatory once net trade income crosses S$6,000 — calculate via the IRAS / CPF self-employed contribution table.

Payment rails — PayNow first

PayNow ID (UEN for businesses, NRIC for individuals) goes directly on the invoice — clients open their bank app, scan the PayNow QR (most banks generate one), pay. Domestic SGD becomes effectively zero-cost.

For overseas clients, Wise Business with a SGD receiving account works cleanly; or invoice in their currency and convert.

Late payments — contract clauses do the work

Outside of construction (which has its own statute), Singapore has no general statutory commercial late-payment interest. Your contract spells it out. Common clause:

Invoices unpaid 14 days past the due date will accrue interest at 1.5% per month (18% per annum). The Client agrees to bear all reasonable costs of collection, including legal fees, on any amount placed with collections or filed in court.

Disputes up to S$20,000 go to the Small Claims Tribunals (faster, simpler, lower fee) — increased to S$30,000 with mutual consent. Above that, Magistrate's Court / District Court.

How this generator handles the Singapore case

• Currency: SGD.
• GST line: toggleable. Off by default (most freelancers). When on, the form requires a GST registration number and labels the document "Tax Invoice".
• UEN field: exposed at the top for ACRA-registered businesses.
• Payment block: prompts for PayNow ID, bank details, and Wise reference.
• Date format: DD/MM/YYYY.

Print to PDF in your browser; native PDF export ships in the next release.

General information — not legal or tax advice

This page is general guidance for Singapore-based freelancers. Tax law and GST rules change (the rate stepped from 7% → 8% in 2023 → 9% in 2024); consult a tax agent or accountant before structuring decisions. Authoritative source: IRAS.