What a construction invoice includes
Every construction invoice, from a bathroom remodel to a commercial fit-out, answers the same four questions: who did the work, what exactly was done, what it costs, and what's already been paid. That means your details and license number, the client and job site, a contract or PO reference, then the work itemized — materials, labor by trade, equipment, subcontractors — with variations on their own lines, the deposit and retention accounted for, and a balance nobody has to calculate. The full field-by-field checklist lives on the construction invoice template page; what this guide adds is the part templates can't: when to send which invoice, and why the sequence protects you.
Step 1 — Set the payment schedule before you start
The invoice argument you win is the one you never have: it was settled in the contract. Before work starts, agree in writing how the job will be billed — deposit percentage, what triggers each progress payment (dates or milestones), what retention is held and when it releases, and payment terms per invoice. On small residential jobs this can be three sentences in the quote. On commercial work it often takes the form of a schedule of values: the contract sum broken into line items, so every progress claim maps to visible portions of the work. Either way, the schedule is the skeleton — every invoice that follows just puts numbers on it.
Step 2 — The deposit invoice
The deposit invoice goes out after signing and before mobilization, and it should look like an invoice, not a text message: numbered, dated, referencing the contract, with the deposit amount and what it covers (materials order, securing the start date). Number it as the first in the job's series — INV-2041-1 — so the paper trail reads as one story. When the deposit lands, say so on the next invoice: a "deposit received" line in the totals, subtracted in plain sight. Clients trust invoices that remember what they've already paid.
Step 3 — Progress claims
A progress claim is an invoice for the portion of work completed since the last one. The rhythm comes from your Step-1 schedule: monthly, or at milestones — foundation poured, frame up, lock-up. Each claim shows the work completed this period (mapped to the schedule of values if you're using one), the value claimed, less any retention, and the total due for this claim. Keep the numbering sequential within the job. Two habits make claims get paid faster: attach evidence (photos, a one-line progress summary — the person approving payment often isn't the person on site), and keep each claim boring. A claim that looks exactly like the last one, plus progress, sails through approval.
Step 4 — Variations get their own paper
The fastest way to lose a payment dispute is a variation that appears on the invoice but nowhere else in writing. When scope changes — client adds a skylight, hidden rot doubles the framing repair — the sequence is: describe it, price it, get written approval, then bill it as its own line referencing that approval ("Variation VO-3, approved June 12"). Never fold variation costs silently into existing lines; the total creeping up without explanation is how trust dies mid-project. Numbered variations with approval dates turn "why is this more than the quote?" into a paperwork lookup instead of an argument.
Step 5 — The final claim and retention
Retention is the percentage — commonly five to ten — held back from each claim as the client's insurance that you'll finish and fix defects. It accrues across the job and releases at the end: typically half at practical completion, the rest after the defects period. Your final claim closes the account: remaining work, plus released retention, minus anything already paid. Restate the totals for the whole job — contract sum, variations, total paid, this claim — so the client sees one clean reconciliation. If the contract requires lien waivers on final payment, this is where they change hands. Send the final claim promptly; the job isn't done until the account is.
Invoice vs payment application (AIA G702)
On commercial projects — especially with a general contractor above you — you may be asked for a payment application instead of an invoice: a formal package (AIA G702/G703 in the US) where the claim is presented against the schedule of values, with retainage calculated on the form and a signed certification. The decision is simple, because it isn't yours: bill the way the contract says. If it specifies payment applications, use them; if it doesn't — which covers most residential and small commercial work — a well-structured construction invoice like the stage-payment template is exactly right. The concepts are identical either way: work completed, less retention, total due this period.
Frequently asked questions
How do I invoice for construction work?
Agree the payment schedule in the contract, invoice the deposit before starting, send progress claims at the agreed milestones, bill every variation as its own approved line, and send a final claim that releases retention. Each invoice: itemized work, deposit and retention accounted for, clear balance due.
How does retention work on an invoice?
Show it as a deduction on each claim ("Less retention, 5%"), track the accrued total, and release it on the final claim — commonly half at practical completion and the balance after the defects period, per your contract.
What's a progress claim?
An invoice for the work completed since the last claim, mapped to the payment schedule agreed up front. Sequentially numbered, evidence attached, retention deducted.
Where do I get a construction invoice template?
The construction invoice template page has the standard, stage-payment and simple-bill formats free in PDF, Word and Google Docs — or build the invoice online in the free generator.
Invosmith is a free AI invoice generator built for people who bill for their work.
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