For a contractor invoice, identify the customer and job, list the work and supplied materials using the agreed billing basis, and separate any approved changes. Reconcile quantities, rates and earlier billing before showing the amount now due.
In this example
Make the job easy to identify
Use a job reference, location or short project description that the customer recognizes. Include enough information to connect the invoice to the work without exposing unnecessary access codes or personal details.
Check whether you agreed a fixed job price, hourly labour and materials, or another arrangement. If the job is fixed price, avoid adding the included labour and materials again as new charges. Describe the included work instead.
A customer purchase order can provide a reference for the invoice, but it is not a supplier invoice or evidence that you have been paid. Match the customer and purchasing details to the actual job.
A job billed as labour and materials
This fictional shelving repair is billed on agreed labour, supplied materials and one additional approved component. Tax is not modeled in these illustrative amounts. They are not typical rates or a recommendation about how to price a job.
| Description | Quantity | Rate (USD) | Amount (USD) |
|---|---|---|---|
| Shelving repair — agreed labour, job EW-22 | 7 hours | 45.00 | 315.00 |
| Replacement shelf boards supplied | 4 boards | 28.00 | 112.00 |
| Approved additional support bracket | 1 bracket | 36.00 | 36.00 |
The extra bracket has its own line so the change can be identified. Keep the actual change approval with your job records; the text on the invoice does not verify that agreement.
Check changes and supplied quantities
Keep a record of what changed, who approved it and the agreed charge. Do not assume an unexpected cost is billable simply because it occurred. When preparing the invoice, use descriptions that can be matched to those records.
Check quantities and units carefully: four boards are not four packs of boards. If some materials were not supplied, reconcile the charge with your agreement and actual records before issuing the invoice. NineBrief does not maintain inventory or verify installation.
For staged jobs, identify the stage being billed and check earlier invoices. Do not mark a requested deposit as received money. The current tools do not manage retention, construction payment certificates or cumulative project valuations.
Keep the job documents separate
| Document | Useful for |
|---|---|
| Quote or estimate | Setting out proposed scope, quantities and pricing before the work. |
| Invoice | Showing the charges and amount being billed to the customer. |
| Purchase order | Preparing a buyer-to-supplier order for goods or services. |
| Delivery note | Recording stated delivered quantities and handover details, not payment. |
A delivery note is not a tax invoice or receipt. A signature field is not an identity-verified electronic signature, and an unsigned note is not proof that delivery occurred. Use the appropriate records for your transaction.
Review before sending the job invoice
- The customer, job reference and billing stage are correct.
- The invoice follows the agreed fixed-price or labour-and-materials basis.
- Quantities, units and any approved extras match your records.
- Earlier invoices and verified received payments have been reconciled.
- The final PDF is complete and an editable backup is saved.
Use the step-by-step invoice guide for the actual editor and download instructions. These examples do not establish local tax or construction-law compliance.
Does the tool calculate the job price for me?
It calculates supported amounts from the quantities, rates and adjustments you enter. It does not recommend your rates, estimate the work or verify the client’s agreement.
Can I save several jobs in a NineBrief account?
Not in the current free-tool workflow. Keep separate editable exports and business records; the browser working draft is not a cloud job library.
About this resource
Prepared with AI assistance for NineBrief Inc. Product instructions are based on the current free-tool implementation; examples are synthetic and their arithmetic is checked. This is practical product guidance, not professional legal, tax or accounting advice.
For how the tools operate, see the Free Tools Terms of Use and Privacy Policy. Send corrections to hello@ninebrief.com without including confidential customer documents.