For service businesses in Singapore. Pre-set with Net 30 payment terms, UEN and bank details section, and SGD currency. Toggle SG GST 9% on if your business is GST-registered.
Opens the invoice generator pre-filled for service businesses: SGD currency, Net 30 payment terms, UEN placeholder in the bank details section, and a service description line item.
Opens the invoice generator pre-filled with service business defaults. All fields are editable before download.
For service businesses in Singapore, a standard invoice should include your company name, UEN (Unique Entity Number) if you are GST-registered, your address, the client's details, an invoice number, the date, a description of services, the amount, and payment terms.
If your business is GST-registered, your invoice becomes a tax invoice and must show your GST registration number, the GST amount separately, and be titled "Tax Invoice." Clients who are also GST-registered use your tax invoice to claim their input tax credits. Without a valid tax invoice, they cannot make this claim.
Fixed fee invoices list the service and the agreed total price. Hourly invoices list the number of hours and the hourly rate, with the amount calculated automatically. Both approaches are common in Singapore service businesses.
Fixed fee invoices are simpler for the client and reduce payment disputes because the price was agreed upfront. Hourly billing is more transparent for variable or open-ended work where the scope cannot be predicted accurately in advance. Choose based on what was agreed with the client, and state the billing method clearly in your invoice description.
Your UEN (Unique Entity Number) is assigned by ACRA when you register a business. Find it on your ACRA business profile at bizfile.acra.gov.sg.
If you are GST-registered, issue a tax invoice within 30 days of the time of supply. The document must be titled "Tax Invoice" and show your GST registration number.
IRAS requires GST-registered businesses to keep tax invoices for at least 5 years. Non-GST businesses should keep invoices for at least 5 years for income tax purposes.
Issue a credit note to reverse or adjust the original invoice. Keep both documents for your records. A credit note should reference the original invoice number and state the reason for the adjustment.