Free consultant invoice template

Invoice retainers, day rates and hourly advisory work with the engagement, billing period and PO number clearly shown.

Opens with typical consulting lines filled in. Free, no sign-up, PDF made on your device.

Northside Consultinghello@northside.example

Invoice

# INV-014
Issued
3 Nov 2026
Due date
17 Nov 2026
Project / PO
PO-88120
Billing period
1–31 October 2026
Bill toJordan Ellis27 Cedar Avenue
DescriptionQtyRateAmount
Strategy workshop (day rate)1$1,200.00$1,200.00
Advisory hours6$150.00$900.00
Monthly retainer — October1$2,000.00$2,000.00
Subtotal$4,100.00
Amount due$4,100.00
Notes

Payment due within 30 days of the invoice date.

Sample invoice with example prices

What to include

  • The engagement or project name and billing period
  • Hourly, daily, retainer or milestone fees
  • A purchase order or client reference, if required
  • The payment due date and agreed payment method

Common questions

How do I bill a retainer?

Add the retainer as one line for the period, then any hours beyond it as a separate line.

Do I need a PO number?

Larger clients often will not pay without one. Put it in the Project / PO field so it prints at the top.

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