InvoiceTools

Invoicing guides for contractors and freelancers

How to make an invoice, write a quote, set payment terms, number invoices and chase an unpaid one, for people who do the work and send the invoice.

Each guide ends with the tool that does the job. Nothing here needs an account and nothing you type leaves your browser.

How to invoice international clients

Which currency, whose bank charges, and what the document has to say when the client is somewhere else.

  • 8 min read

Disputed invoice: what to do

Three kinds of dispute, and a different answer to each. The first move is the same in all three: get the reason in writing.

  • 7 min read

How to get paid faster, without chasing

Most of the advice about getting paid faster is about chasing. Chasing is the last resort. These are the parts of the wait you can remove before it starts.

  • 8 min read

Invoice late fee laws

What makes a late fee hold up, what the statutes say in eight states, and the wording to put on the document.

  • 7 min read

What is a PO number on an invoice?

The single most common reason an invoice sits untouched in a large company, and the field that fixes it.

  • 7 min read

How to add a payment link and QR code to an invoice

Build a payment link for PayPal, Venmo, Cash App, Zelle or ACH, put the QR on the document, and pick the right method for the job.

  • 4 min read

How to price a job: markup and margin

Markup and margin are not the same number, and the difference is where small jobs quietly lose money. Here is the arithmetic.

  • 7 min read

Quote to invoice

What goes on a quote, quote versus estimate, setting the deposit and validity, and converting the accepted quote into an invoice.

  • 5 min read

How to add sales tax to an invoice

Where the tax line goes, how it interacts with discounts and shipping, and what a tax invoice has to show that an invoice does not.

  • 7 min read

How to make an invoice

A walkthrough of the invoice generator with a screenshot of each step: trade, client, lines, terms and the finished PDF.

  • 5 min read

Retainer and recurring invoices

The same amount, on the same day, every month. What to put in the agreement, what goes on the invoice, and where retainers go wrong.

  • 7 min read

How to invoice as a freelancer

Your first invoice, and every one after it. What goes on the page, what to charge, and the three habits that decide whether it is paid.

  • 8 min read

Deposit invoice: how to bill a deposit

When to ask for a deposit, how much, deposit versus down payment versus retainer, the wording on the quote and the deposit invoice, and how the final invoice shows the balance due.

  • 8 min read

Invoice vs quote vs estimate vs receipt

Five documents, one job. Which one belongs at which point, what each commits you to, and why sending the wrong one costs money.

  • 7 min read

How to write a change order

When to write a change order, what goes on the form, how to price extra work including time and materials, keeping a log, and how an approved change reaches the invoice.

  • 8 min read

Payment terms on an invoice

Net 30, net 15, due on receipt, 2/10 net 30. What each one means, what it does to the due date, and which to put on your own invoices.

  • 8 min read

How to chase an unpaid invoice

What to do when a client is not paying: the day-one reminder email, the day-seven call, the overdue notice with the late fee, the final demand letter, then liens, small claims and collections.

  • 8 min read

Progress billing: format and example

How to bill a job in stages: the schedule of values, a worked progress invoice with retainage, pay applications and AIA forms, and the quote wording that gets each stage paid.

  • 8 min read

How to number invoices: format and examples

An invoice numbering system that never repeats or skips, format examples with a year or job prefix, separate series for quotes and credit notes, and where the number goes on the invoice.

  • 6 min read

Every guide here is written by the people who build the tools, and checked against the invoicing glossary so the wording matches what your accountant will call it. About InvoiceTools.com covers who that is and why every tool on the site is free.

Spotted a figure that is out of date, a tax rule that has moved or a step that no longer matches the tool? Tell us and it gets fixed.

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Download it and send it yourself, and nothing is stored on our servers. Or send it as a link and stop guessing whether the silence means no, or means nobody opened it.

The first four documents you send as a tracked link are free with an account. Everything else on InvoiceTools.com stays free. Generators, calculators and downloads need no account; template designs need a free one.