Free Consulting Invoice Template

Word, Excel and PDF · Free, no signup · Updated October 4, 2026

Consulting work is usually billed under a statement of work or engagement letter, by the hour or day, often against a retainer paid in advance. This template has an engagement/PO reference, a billing period, dated time entries and a "Less: retainer applied" line so the client sees exactly how much of the retainer was used.

Change the Hours column header to "Days" if you bill day rates; the formulas work the same way.

Preview of the Consulting Invoice template layout

What's in the template

  • Line-item columns: Date, Description of work, Hours, Rate / hr, Amount
  • Your details, client (Bill to) block, invoice number, invoice date and due date
  • Extra header fields: Engagement / PO, Billing period
  • Subtotal, tax at a rate you set, total
  • "Less: retainer applied" line and balance due
  • Payment terms and instructions section

Sample entries show how to fill it in; replace them with your own. All three files share the same layout. The Excel version calculates line amounts and totals; the PDF is a blank, print-ready form.

Best for

  • Management, IT, HR and marketing consultants
  • Advisory work billed against a retainer
  • Monthly invoices under a statement of work
  • Clients whose finance teams require a PO or SOW reference

How to use this template

  1. Download the format you prefer: Word to edit like a document, Excel for automatic totals, or the PDF to print and fill in by hand.
  2. Add your details: business name, address, contact details and, if you have one, your logo and tax number.
  3. Fill in the client and invoice details: who you are billing, a unique invoice number, the invoice date and the due date.
  4. List what you are billing, one line per item or task, with the date of each.
  5. Check the totals (Excel calculates them; in Word, work them out or use the online generator), then add payment terms and how to pay.
  6. Save as PDF and send. See how to send an invoice.

Prefer not to download anything? Fill in the same fields in the free online invoice generator and save the result as a PDF.

Tips for consulting invoices

Quote the engagement reference every time

Use the SOW or PO number from the contract. It is how the client's finance team matches your invoice to an approved budget.

Bill expenses separately

Travel and other pass-through costs are best listed as separate lines (or a separate invoice) with receipts attached, at cost unless your contract allows a mark-up.

Retainers: show usage

List the hours worked even when they are covered by the retainer, then subtract the retainer. The deposits and milestones guide covers retainer invoicing.

Frequently asked questions

How do consultants invoice clients?

Usually monthly or at agreed milestones, referencing the engagement letter or statement of work, with time entries or deliverables listed and expenses billed separately.

Can I open this template in Microsoft Office?

Yes. The .docx file opens in Microsoft Word and the .xlsx file in Microsoft Excel (2010 or later). Both also open in Google Docs/Sheets, LibreOffice and Apple Pages/Numbers.

Day rate or hourly rate?

Either. Enter days in the hours column and your day rate in the rate column, and rename the column headers.

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