How to Invoice as a Freelancer (With a Template Checklist)

A freelance invoice template is a reusable document that lists who you are, who you billed, what you did, how much is owed, when it's due and how to pay. If your freelance invoice template covers those basics with a unique number and clear payment terms, clients can pay quickly and you have the record you need for taxes.

This guide gives you a field-by-field checklist, explains payment terms and late fees, covers the US 1099 rules as of 2026 with notes for the UK, and shows what to do when a client goes quiet. Invoicing is one piece of running a freelance business; our freelancing with AI guide covers the rest, from skills to clients.

What must a freelance invoice include?

At minimum: a unique invoice number, your details, the client's details, the invoice date, the work date, a clear description, the amount owed and when and how to pay. Some countries make parts of this a legal requirement.

In the US, there's no single federal list of invoice fields for freelancers, but clients' accounts teams expect the basics and may delay payment without them.

In the UK, GOV.UK lists what every invoice must include:

• A unique identification number.
• Your company name, address and contact information, and the customer's company name and address.
• A clear description of what you're charging for.
• The supply date (when the work was provided) and the invoice date.
• The amounts charged, the VAT amount if applicable, and the total owed.

Sole traders must also show their own name and any business name they use, plus an address where legal documents can be delivered if they trade under a business name.

In Canada and Australia, extra rules apply mainly once you're registered for GST or HST; check the tax authority's guidance for your situation.

Freelance invoice template checklist

Use this table to build your template once, then reuse it for every client. "Required" means required somewhere or expected by almost every client; "recommended" fields prevent delays.

Example (hypothetical): you write six product descriptions at $50 each. The invoice shows one line for "6 x product descriptions, $50 each, $300", no tax line because you're not registered for sales tax or VAT, a due date 14 days out and your payment link.

Save each invoice as a PDF with the number in the file name, and keep a simple log of number, client, amount, date sent and date paid.

What payment terms should you put on an invoice?

Put a specific due date or a short term such as "due within 14 days", and agree it in your contract before the work starts. Vague wording like "payable on receipt" is easy to ignore.

Common options:

• Deposit upfront, such as part of the fee before you start, for new clients or larger projects.
• Milestone payments for longer projects, invoiced as each stage is approved.
• Monthly in advance for retainers, such as ongoing social media or bookkeeping work.
• A fixed term such as 7, 14 or 30 days from the invoice date for one-off projects.

Some places set rules for you. In New York City, the Freelance Isn't Free Act requires a written contract for work worth $800 or more, including smaller jobs that add up to $800 within 120 days, and says that if no payment date is set, the client must pay within 30 days of completion. In the UK, if no payment date is agreed, a payment is late 30 days after the client receives the invoice or the work is delivered.

Our roadmap on how to start freelancing covers what else to put in a simple contract, and writers can use our freelance writing contract template to set payment terms and kill fees before the first invoice.

Can you charge late fees as a freelancer?

Usually yes, if the client agreed to them in advance; adding a surprise fee to an invoice is much harder to enforce. The rules depend on where you and the client are.

• US: there's no single national rule for freelancers. Late fees and interest generally need to be in your contract, and state laws may limit what you can charge. Check your state's rules or ask a local professional before setting a percentage.
• UK: for business-to-business transactions, GOV.UK says you can charge statutory interest of 8% plus the Bank of England base rate on late payments, and claim debt recovery costs.

Many freelancers find a polite, firm reminder routine more useful than a fee. It keeps the relationship intact and gets most invoices paid.

How do taxes work with freelance invoices?

Your invoices are your income records, so keep every one; clients may also send you tax forms, but you report all income whether they do or not. Here's what US freelancers need to know as of 2026.

Key points:

• The $2,000 threshold is new. It replaced the old $600 threshold for payments made in 2026 or later and will be adjusted for inflation starting in 2027.
• Payments to corporations, including LLCs taxed as corporations, are generally not reported on a 1099-NEC.
• You report everything. The IRS says gig income must be reported even if no information return such as a 1099 is issued.
• Keep records. The IRS's general rule is to keep records for 3 years, with longer periods in some situations.

For self-employment tax and quarterly payments, see the taxes step in our guide on how to start freelancing. UK freelancers report through Self Assessment, and Canadian and Australian freelancers have their own rules. This isn't tax advice; a local accountant can confirm what applies to you.

How do you send invoices and get paid?

Send a PDF or a payment-linked invoice from a tool you'll use consistently, right after the work is delivered or on a set billing day. Speed matters: the sooner you invoice, the sooner the clock starts.

• Spreadsheet or document templates are free and fine for a handful of clients.
• Invoicing and accounting apps add numbering, reminders, payment links and income reports.
• Payment processors let clients pay by card or bank, but charge a fee per payment that varies by provider and country. Check the current rate and build it into your prices.
• Marketplaces such as Fiverr and Upwork handle invoicing and payment for you, and you shouldn't invoice those clients outside the platform.

Our guide on how to price freelance work shows how to account for payment fees so they don't eat your margin.

What do you do when a client doesn't pay?

Follow a simple, polite escalation and keep everything in writing. Most late payments are disorganization, not fraud.

1. On the due date: a friendly reminder with the invoice attached.
2. A week later: a second reminder asking when payment will be made.
3. Two weeks late: a firm note pausing further work until the invoice is paid.
4. After that: a formal demand letter that references your contract and any agreed late fee.
5. Last resort: small claims court, or in New York City, a complaint under the Freelance Isn't Free Act.

To prevent repeats, take deposits from new clients and don't release final files until payment clears. Our list of freelancing mistakes covers other money habits that protect you.

Next steps

Build your freelance invoice template from the checklist table today, number your first invoice and set a reminder for its due date. For a step-by-step plan covering contracts, pricing and finding clients, see our guide on how to make money freelancing. For other ways to earn, start with our guide to making money online.