Engineering Invoice Template
An engineering invoice template for consulting engineers: hours by staff grade, fixed-fee tasks, site visits and stamped drawings. Example amounts are illustrative — replace them with your own.
Also used as a engineering services invoice, structural engineer invoice, consulting engineer invoice.
From
Bill to
Items
Custom fields
Add purchase order numbers, project references, or any extra detail that appears on the invoice.
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Invoice
| Invoice # | INV-001 |
| Issued | Oct 8, 2026 |
| Due | Oct 22, 2026 |
Billed to
| Description | Qty | Rate | Amount |
|---|
| Subtotal | $0.00 |
| Tax (0%) | $0.00 |
| Total due | $0.00 |
Notes
Payment due within 14 days. Thank you for your business!
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When to use this template
Use it for structural, civil, mechanical and electrical engineering services.
Fields to include
- Your business name, address and contact details
- Invoice number, issue date and due date
- Project and task numbers
- Hours by grade: principal, engineer, drafter
- Deliverables issued with revision
Sample engineering invoice: what the lines look like
- Principal engineer (hours)6 × $210.00 = $1,260.00
- Project engineer: calculations (hours)22 × $145.00 = $3,190.00
- Site visit and report1 × $650.00 = $650.00
- Stamped drawing set1 × $400.00 = $400.00
- Example total before tax$5,500.00
Practical tips
- Bill to the client's task codes.
- State drawing revisions issued.
- Keep a budget-to-date line for fixed fees.
Frequently asked questions
How do engineers bill?
Time and materials at rates per staff grade, or a lump sum per task with progress billing.
Why list staff grades?
Clients agree a rate schedule up front and check invoices against it.
Is this engineering invoice template free?
Yes. Fill it in on this page, check the preview and download a print-ready PDF. You don't need an account.
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