Sending your first invoice as a freelancer in Singapore is simpler than it looks — but a few local details separate a professional invoice from one that gets your payment delayed or your client’s accountant emailing you questions.
What must be on a freelance invoice?
Every invoice you send should include: your business name (or your own name if you’re a sole proprietor), your UEN if you have a registered business, an invoice number, the invoice date, your client’s name and address, a clear description of the work, the amount for each line item, the total due, and your payment details and terms (e.g. “payment due within 14 days”).
Numbering matters more than most freelancers think. Use a running sequence (INV-2026-001, INV-2026-002…) and never reuse a number — it keeps your records clean for tax season and looks professional to corporate clients whose finance teams file invoices by number.
Do freelancers need to charge GST?
Only if you are GST-registered. Registration is compulsory only when your annual taxable turnover exceeds S$1 million — most freelancers are nowhere near that, and should not charge GST at all. If you’re not registered, your invoice is a plain “Invoice” with no GST line.
If you are GST-registered, your invoice becomes a Tax Invoice: it must be labelled as such, show your GST registration number, and show the GST amount (9% in 2026) separately. Getting this wording wrong is the most common mistake registered freelancers make.
How do I actually get paid faster?
Chasing payment is the real pain of freelancing. Three things speed it up: short, explicit payment terms (“due in 7 days” beats “due on receipt” for clarity); invoicing immediately when the work is delivered, not at month-end; and — the big one in Singapore — putting a PayNow QR code directly on the invoice. Your client opens their banking app, scans, and the amount and invoice reference are already filled in. No typing your UEN, no bank transfer forms, no “I’ll do it later”. Corporate clients can still do a normal transfer; the QR just removes friction for everyone else.
What should I keep for taxes?
Keep every invoice you issue for at least 5 years. Your invoice total feeds your income declaration, so a consistent numbering system plus a folder of PDFs is genuinely all the bookkeeping many freelancers need at the start.
Create yours now: our free Invoice Generator produces a proper Singapore-format invoice — GST wording if you need it, PayNow QR included, everything calculated for you, and your data never leaves your browser.
Frequently Asked Questions
Do I need to register a company to invoice clients in Singapore?
No. You can invoice under your own name as an individual. Many freelancers register a sole proprietorship for a UEN and a business name, which looks more professional and lets you receive PayNow payments under the business — but it’s not required to issue a valid invoice.
Should I charge GST as a freelancer?
Only if you’re GST-registered, which is compulsory only above S$1 million annual taxable turnover. If you’re not registered, don’t add GST — charging GST without being registered is an offence.
What payment terms are normal for freelancers in Singapore?
7 to 30 days. Shorter terms are increasingly accepted — state them clearly on the invoice and start the clock from the invoice date.