Engineering Services Invoice Template

An engineering progress invoice has to separate three kinds of charges: the fixed fee earned by phase, approved additional services billed by the hour, and expenses at cost. This template shows each on its own lines and subtracts earlier billings, so the prime firm can pass it to the owner as is.

  • Basic services (percent complete)
  • Additional services (approved)
  • Reimbursable expenses (at cost)
  • Previously billed
  • Online payment by card or bank transfer
Free, no account needed to start. Not legal advice.

Use it each month on a design project billed by phase, whether you work for an architect or directly for an owner.

The full template

Every line, price, and note is yours to change when you use the template in Clientary, and your client's details fill in from their record.

In the editor, the totals add up as you type. Once you send it, your client pays online by card or bank transfer. Edit this template online

Structural Engineering, Progress Invoice

This invoice covers our work through the end of the month. Schematic design and design development are complete, and construction documents are 40% complete. It also bills the stair and storefront revisions you approved, with the amounts billed on earlier invoices subtracted below.

Basic services (percent complete)
Schematic design, 100% complete$4,500.00
Design development, 100% complete$7,500.00
Construction documents, 40% complete$6,400.00
Additional services (approved)
Stair and storefront revisions, project engineer (hours) (10)$1,650.00
Stair and storefront revisions, drafting (hours) (6)$660.00
Reimbursable expenses (at cost)
Plan printing and delivery$86.00
Previously billed
Less amounts billed on earlier invoices-$13,600.00
Total$7,196.00

Notes

Payment is due within 10 days of your receiving the owner's payment for this work, and no later than 60 days from the invoice date.

Additional services to date total $2,310 of the $4,740 approved for the stair and storefront revisions.

How to use this template in Clientary

  1. Edit it online. Change any line item, price, or note, or add your own. No account needed.
  2. Preview it as your client will see it. Fill in who it's for and pick a design.
  3. Start your free trial to send it. Confirm you'll have it reviewed, since templates aren't legal advice, and your invoice is waiting in your new account with your client's details filled in.
  4. Send it to be paid. Your client pays online, and you can see when it's viewed and paid.

Learn more about invoicing in Clientary.

Frequently asked questions

How do engineers bill on a design project?

Commonly monthly by percent complete for each phase, with additional services billed hourly against an approved estimate, and expenses at cost.

What does pay-when-paid mean for a subconsultant?

The prime design firm pays its subconsultants once the owner has paid for their work. Agreements often add an outside limit, so a subconsultant is paid within a set number of days even if the owner is slow.

Is this engineering services invoice template free?

Yes. Read and copy the full text on this page, or edit it online and see it as your client will. When it's ready, start a free Clientary trial to send it or download it as a PDF.

Has a lawyer reviewed this template?

No. It's a general starting point written by Clientary, not legal advice, and it hasn't been reviewed by a lawyer for your situation or the laws where you and your client work. Have your own counsel review it before you use or sign it.

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