For construction and renovation contractors in Singapore. Pre-labelled rows for Labour, Materials, Equipment, and Markup. Progress claim calculator with 5% retention. Net 14 payment terms.
Opens the invoice generator pre-filled for contractors: SGD currency, Net 14 terms, and four pre-labelled line items (Labour, Materials, Equipment, Markup).
Opens the invoice generator pre-filled. All fields are editable before download.
Use this calculator to work out your retention and net payable before launching the template. The results will be pre-filled into the invoice notes.
Construction and renovation contractors in Singapore typically invoice through progress claims -- partial invoices tied to milestones or percentage of completion. Each progress claim shows the total contract value, amounts previously claimed, the current claim amount, and the retention sum withheld by the main contractor or client.
Retention is typically 5% to 10% of each progress claim, held back until practical completion or the defects liability period ends. This generator calculates retention automatically when you use the progress claim calculator above.
A variation order (VO) invoice is issued when work beyond the original contract scope is performed. Always get written approval for variation work before issuing a VO invoice. Reference the original contract number and the approved variation order number on the invoice.
On the invoice, add a separate line item for each variation order, with the VO reference number in the description. This keeps the original contract billing separate from variation work and makes it easier for the client's accounts team to process.
Retention is a percentage of each progress claim withheld by the client or main contractor until the project is complete and the defects liability period has passed. Typically 5% in Singapore.
The total contract value, previously billed amounts, current claim amount, retention deducted, net payment due, and the period or milestone covered.
If your business is GST-registered and annual revenue exceeds $1 million, yes. Construction services in Singapore are standard-rated at 9% GST.
Include a VO line item with the VO approval reference number and description. Keep written approval documentation for all variation work.