Sample contractor invoice
Billed to Fairview Ave ADU, draw No. 3, framing complete. Rates are illustrative, not quotes.
| Description | Qty | Unit | Rate | Amount |
|---|---|---|---|---|
| Progress draw, framing milestone per contract schedule | 1 | job | $14,800.00 | $14,800.00 |
| Project supervision and subcontractor coordination | 24 | hr | $85.00 | $2,040.00 |
| Permit and impact fees, passthrough at cost | 1 | job | $1,240.00 | $1,240.00 |
| Total | $18,080.00 | |||
What a contractor invoice carries
A contractor invoice is the money half of the construction contract, and it should read alongside the draw schedule without anyone needing to decode it. Put the contract or job number, the draw number, and the phase being billed at the top, then show the value of work completed to date, the amount previously billed, and what this draw is asking for now. That running-total shape is what an owner, and any lender funding the project, expects to reconcile.
Subcontracted work belongs on the invoice as its own lines, described the way the contract describes it (drywall, siding, electrical) rather than bundled into a single mysterious figure. If your agreement marks up sub bills, the invoice should say so on the line itself. The goal is an invoice an owner can check against the signed bid in five minutes and pay without a phone call.
Progress billing on a contractor invoice
Progress billing (invoicing a percent of the contract as work completes) is how general contractors stay solvent on months-long jobs. The draw schedule in the contract sets the milestones and the amounts: mobilization, foundation, framing, rough-ins, finishes, close-out. Bill each draw when its milestone is genuinely complete, and attach enough description that the owner can walk the work and match it to the number on the invoice.
Lenders and construction-loan inspectors usually review draws before funds release, so the line descriptions should match the schedule word for word. If a milestone ran long or a phase was split, say that on the invoice instead of letting the owner discover it against the contract. Draws that track the work get approved in days; draws that get ahead of it sit in a loan officer's inbox for weeks.
Change orders before they become arguments
A change order is work the contract never priced, and the invoice is where an unapproved one turns into a collection problem. The discipline is simple: no change proceeds without a signed scope and amount, and the invoice shows the change order on its own line with its number and its approval date. An owner who approved a change in writing never disputes the line that carries their signature reference.
Keep the same rule when the change comes from the owner's own ideas at the kitchen table. Rewrite the scope, restate the price, get the signature, then invoice it. A contractor invoice with three extra undocumented lines reads as a pattern; a contractor invoice with a numbered change order attached to each one reads as a business.
Retainage, subcontractors and final payment
Retainage is the percentage an owner holds back from each draw (five to ten percent is common) until the job reaches final completion. It is the owner's insurance that the punch list gets finished, and it is your reason to close out promptly: the last invoice should itemize the retainage held across all draws, the amount being released, and the punch-list items completed to earn it.
Mirror the same terms downstream to subcontractors where your contract allows it, so a holdback you are carrying is not money you have already paid out. At close-out, send the final invoice, the punch-list sign-off and the warranty paperwork in one packet; owners who receive a complete close-out packet pay faster and refer more.
Taxes on contractor invoices
Sales tax treatment for general contracting depends on the state and on how the contract is written. Some states treat a lump-sum construction contract as entirely taxable, others tax only the materials a contractor supplies, and a few treat real-property improvements differently from shop fabrication. Because the same job can be taxed differently under different contract structures, keep materials and labor separated on every contractor invoice, and confirm the treatment for your contracts with your state's department of revenue or an accountant.
This is general information, not legal or tax advice. Rules vary by location.