How to Invoice a Client as an Independent Contractor

What a contractor invoice needs

Six things: your name or business name and contact details, the client's name and billing address, a unique invoice number, the invoice date, an itemized list of work, and the total due with a due date.

Add the job address or project name if the client has more than one site — it is the single detail that most often decides whether your invoice gets approved this week or sits in a pile.

Labor vs materials line items

Split labor and materials into separate lines with quantity and rate. Clients approve itemized invoices faster because they can see how the total was built, and many states tax materials and labor differently.

Describe labor in plain language with hours or a flat scope: "Demo and haul-away, 6 hrs @ $65" is clearer and harder to dispute than "contracting services."

Payment terms that get you paid faster

State an explicit due date — "Due September 18, 2026" outperforms "Net 15" because nobody has to do math. Net 15 is the sweet spot for residential work; Net 30 is standard for commercial.

List every payment method you accept and include your payment details directly on the invoice. Every extra step between reading the invoice and paying it adds days.

Common mistakes

The big four: no invoice number, no due date, vague line items, and sending the invoice days after the work finished. Collection rates drop sharply if the invoice goes out more than 48 hours after completion.

Also avoid editing a sent invoice — issue a corrected invoice that references the original number instead, so both of your books stay consistent.

Try the free generator

Field Invoice has all of these fields built in — fill in your details, download the PDF, and send it. No signup, no subscription, and your invoice number auto-increments after each download.