An invoice does two jobs: it tells your client exactly what they owe and why, and it removes every excuse for paying late. Most late payments aren't malice — they're friction. A missing detail, an unclear total, no due date. Here's everything a professional invoice needs, in the order it should appear.
Sounds obvious; frequently skipped. Say it plainly at the top so it isn't mistaken for a quote or a receipt.
INV-001, INV-002, and so on. It's how you and your client refer to it when anything needs discussing, and your accountant (and tax authority) will expect a sequence with no gaps.
Name (or business name), address, and a way to reach you. A logo isn't required, but it reads as established.
The name and address of who's paying. For companies, address it to the right person or department — "Accounts Payable" beats a vague send-off into a big company.
The single biggest lever against late payment. "Due on receipt" or a specific date both work; "Net 30" (30 days) is the common default. Whatever you pick, make it explicit — an invoice without a due date is a suggestion.
One row per piece of work: description, quantity, rate, amount. Be specific enough that the client recognizes what they're paying for — "Website redesign — homepage and landing pages" not "design work."
Show the math. If tax applies, show the rate. The total should be impossible to miss.
How, exactly, should the money reach you? Bank transfer details, payment link, whatever you use — put it on the invoice itself, not in the email body that gets lost.
A notes section covering late fees if you use them, and a simple "thank you for your business." Courtesy is free and clients remember it.
Send the day the work completes, or on a fixed monthly date for ongoing work. If the due date passes: a friendly reminder the day after, a firmer note at a week, and a phone call at two weeks. Most late payers are disorganized, not dishonest — the polite, prompt chaser gets paid first. (Sixty-five percent of freelancers report waiting 30+ days to get paid; the ones who invoice fast and chase politely beat that average.)
And if the job needs a price agreed before the work starts, send a quote first — the free estimate maker works exactly like the invoice tool.
Nine things: the word "Invoice," a unique invoice number, your business details, your client's details, the issue date and due date, line items for the work, the subtotal, tax, and total, payment instructions, and your terms. The full breakdown is above — miss one and you've given the client a reason to pay late.
You don't need paid software. A clean document with the nine items above does the job. If you'd rather not build it yourself, the free invoice generator handles the numbering, dates, and math in your browser — no signup, and your data never leaves your machine.
In most places, yes. Freelancers and sole traders invoice under their own name all the time — use your legal name and address where a company name would go. Depending on where you live there may be tax registration rules once income passes a threshold, so check your local requirements. An invoice is a bill, not a company document.
One line item per task or period: description, hours as the quantity, your hourly rate, and the amount. "Service call — furnace diagnostic, 2 hrs × $95" tells the client exactly what they're paying for. Vague hours get questioned; itemized hours get paid.
The day the work finishes, while the value is fresh. For ongoing work, pick a fixed day each month and never miss it. The longer you wait to send, the longer they wait to pay.
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