How to Invoice as a Freelancer: Step by Step, With What to Include

Short answer: To invoice as a freelancer, make one PDF per job in five steps. Put your name and contact details and the client’s billing name at the top. Give it a unique sequential number and the date. Itemize the work with quantities, rates and a total. State the due date, such as Net 14, and exactly how to pay. Then send the PDF to the person who approves payment and log it as unpaid until the money arrives. The full nine-step version is below.

Invoicing is the part of freelancing that turns finished work into actual money in your bank account. Do it well and you get paid on time; do it sloppily and you spend weeks chasing clients. This guide walks through the entire process, from your first invoice to handling late payers, whether you work in the United States, Canada, the United Kingdom, or the EU.

How do you invoice as a freelancer, step by step?

These nine steps produce a clean, professional invoice, and they are the same whether you are writing your first invoice for freelance work or your hundredth. If you would rather copy a finished document than build one from a blank page, work from the freelance invoice example and adapt the wording line by line.

1. Choose a tool. Options include a word processor template, a spreadsheet, or a dedicated invoicing app. An app reduces errors and remembers your details; for a one-off, a free online invoice generator for freelancers makes the PDF in your browser with no account.
2. Add your branding and contact details. A simple logo and consistent formatting make you look established.
3. Enter the client’s information. Confirm the correct billing contact before you send.
4. Assign a unique invoice number. Sequential numbering (INV-0001, INV-0002) is simplest.
5. Itemize the work. List each service or deliverable with its rate. Break down hourly and fixed-fee work separately.
6. Add taxes if required. Apply sales tax, GST, or VAT based on your location and registration status.
7. State payment terms and methods. Tell the client exactly how and when to pay.
8. Export as a PDF. PDF is the universal standard; it cannot be accidentally edited and looks the same on every device.
9. Send it and log it. Email the PDF or share it, then record it as outstanding so you can follow up.

What should you include on a freelance invoice?

Every professional invoice should contain the same core fields, and this is the whole answer to what to put on an invoice. Missing one of these is the most common reason payments get delayed.

Field	What to include	Why it matters
Your business name and contact	Legal or trading name, email, phone, address	Tells the client who to pay
Client details	Company name, contact person, billing address	Ensures it reaches the right desk
Invoice number	A unique reference (e.g., INV-0007)	Keeps your records and theirs organized
Invoice date	The date you issue it	Starts the payment clock
Due date	When payment is expected	Sets a clear deadline
Itemized services	Description, quantity, rate, line total	Justifies the amount and prevents disputes
Subtotal, tax, total	Sum before tax, any sales tax/VAT, grand total	Shows exactly what is owed
Payment instructions	Bank transfer, check, PayPal, etc.	Removes friction so the client can pay
Payment terms	Net 15, Net 30, deposit required	Manages expectations

UK and EU note: If you are VAT-registered, your invoice must show your VAT number, the VAT rate applied, and the VAT amount — HMRC sets out the required fields in its guidance on VAT invoices. Sole traders below the VAT threshold do not charge VAT but should state that clearly if a client asks; the UK sole trader invoicing guide covers the threshold and the wording in detail.

What is a freelance invoice?

A freelance invoice is a formal request for payment that a self-employed person sends to a client after (or sometimes before) work is delivered. It is a legal and accounting document, not just a friendly note. An invoice creates a record that a specific amount is owed by a specific date.

In the US, freelancers are usually taxed as sole proprietors or single-member LLCs and may receive a Form 1099-NEC from their larger clients. For payments made during 2026 the reporting threshold rose from $600 to $2,000, with inflation indexing after that. The form is the client’s record of what they paid you in the calendar year, while your invoices are your record of what you billed, so the two rarely match to the dollar. Income under the threshold is still taxable even though no form arrives — the 1099 taxes guide covers that gap. In the UK, a freelancer often operates as a “sole trader.” The invoice itself looks similar everywhere, but tax identifiers and VAT rules differ by region.

What payment terms should freelancers use?

Payment terms tell the client how long they have to pay. Choosing the right one balances your cash flow against what clients will accept.

• Due on receipt: Payment is expected immediately. Best for small jobs or new clients.
• Net 7 or Net 14: Payment is due within 7 or 14 days. Common for freelancers who need steady cash flow.
• Net 30: Payment is due within 30 days. Standard for larger companies and agencies.
• Deposit or milestone: Collect a percentage upfront (often 25–50%) and the rest on delivery. Best for large projects.

A useful fact: shorter payment terms are correlated with faster payment. Many freelancers default to Net 30 because it sounds professional, but Net 14 often gets you paid two weeks sooner with no downside.

How should I send an invoice to a client?

Email remains the most common delivery method, and a PDF attachment is the expected format. On a phone, the fastest route is often the share sheet, which lets you send the PDF directly to email, messaging apps, or cloud storage.

When you send an invoice, include a short, polite message: thank the client, reference the project, state the total and due date, and attach the PDF. Keep a copy for your own records. If you use an app that tracks status, mark the invoice as “sent” so you know when to follow up.

How do you invoice a company for freelance work?

Invoicing a company works the same way as invoicing a person, but a business pays through a process, and an invoice that skips a step in that process waits in a queue. Before you send the first one, ask your contact four things:

• Who receives invoices? Many companies want them sent to an accounts payable address rather than to the person who hired you.
• Is there a purchase order or project code? If so, put it on the invoice; an invoice without the PO number is often returned unpaid.
• What vendor paperwork do they need? US companies usually ask for a Form W-9 before the first payment; others have a supplier form with your bank details.
• What are their payment terms? Large companies often pay on their own cycle, such as Net 30 or Net 45, regardless of what your invoice says, so agree the terms in writing up front.

Bill the company’s legal name, not your contact’s name, and keep the description in the words of the contract or statement of work so the approver can match it in seconds.

How do freelancers track unpaid invoices?

Tracking outstanding invoices is the difference between getting paid and forgetting a $2,000 job entirely. At minimum, keep a simple list showing each invoice number, client, amount, due date, and status (sent, paid, overdue).

A dedicated app keeps this list for you. Keel, for example, shows who owes you and how late each invoice is, records payments with a tap, and drafts a reminder that you review and send yourself; nothing goes to a client automatically. Because Keel stores everything encrypted on your iPhone with no bank connection, no cloud, and no account, your client and revenue data never leaves your device.

How do I handle late payments?

Late payments are common, so build a follow-up routine before you need one.

1. Send a friendly reminder a day or two after the due date. Assume it was an oversight.
2. Follow up firmly at one week overdue, restating the amount and a new deadline.
3. Add a late fee if your terms allowed for one (commonly 1.5% per month), and reference it.
4. Pause work on ongoing projects until the outstanding balance is cleared.
5. Escalate to a formal demand or, for large sums, a collections service or small claims court.

Preventive tip: requiring a deposit and using shorter terms dramatically reduces how often you reach step 4 or 5. If you are already at step 1 or 2, the wording of the reminder matters more than how often you send it; getting clients to pay on time has a follow-up sequence you can copy.

Try Keel for freelance invoicing

If you invoice from your phone, Keel: Invoice Maker & Receipts by Ilura Technology runs the nine steps above for you: it remembers your details and your clients, numbers each invoice in sequence, and makes a PDF that can carry your payment link as a QR code. If you quote first, the accepted estimate becomes the invoice in one tap. Once it is sent, the “who owes you” list shows what is overdue and drafts a reminder you review and send yourself. Everything is stored on your iPhone with no bank link, no cloud and no account, and the App Store privacy label reads “Data Not Collected.” It is free with no invoice limit (free invoices carry a small “Made with Keel” footer); Keel Lifetime is a one-time $249.99 purchase. One honest note: Keel does not process card payments or chase clients automatically; it produces the invoice and shows the payment options you choose.

Download Keel on the App Store: https://apps.apple.com/us/app/keel-invoice-maker-receipts/id6786659713

Frequently asked questions

How do I write or make an invoice for freelance work? Start from a template, a generator or an invoicing app rather than a blank page, then fill in your details, the client’s billing name, a unique number, the date and a due date. Write each line item in the words of your agreement, such as “Homepage copy, 1,200 words, fixed fee”, with its amount, add any tax you are registered for, total it, say how to pay, and send it as a PDF.

Do freelancers legally need to send invoices? In most cases yes, at least for record-keeping and tax purposes. Even where an invoice is not strictly mandated, sending one protects you by documenting what was agreed and what is owed. If you are VAT-registered in the UK or EU, a compliant VAT invoice is a legal requirement rather than a courtesy, and your client needs it before they can reclaim the VAT they paid you.

What is the best format for a freelance invoice? A PDF is the standard. It looks identical on every device, cannot be edited by accident, and is accepted by virtually all clients and accounting systems. Avoid sending an editable word processor or spreadsheet file: an invoice the recipient can alter is weak evidence if the amount is later disputed. Keep your own copy of every PDF you send, exactly as the client received it.

How much should I invoice as a freelancer? Invoice the rate you agreed with the client, whether hourly or a fixed project fee. Always confirm the scope and rate in writing before starting so the invoice matches expectations. The most common mistake is billing for extra work nobody approved: if the scope grows, get written sign-off on the additional hours or fee first, then show it on the invoice as its own line item.

Can I invoice before finishing the work? Yes. Many freelancers invoice a deposit upfront or bill in milestones for larger projects. This improves cash flow and reduces the risk of non-payment. A common split is 50% before work starts and 50% on delivery; on multi-month engagements, monthly milestone invoices work better. State in the agreement which milestone triggers each invoice, and number deposit invoices in the same sequence as everything else.

Do I need to charge sales tax or VAT? It depends on your location and registration. US freelancers may owe sales tax on certain services depending on the state; UK and EU freelancers charge VAT only if registered. In the UK, registration becomes compulsory once taxable turnover passes £90,000 in any rolling 12-month period. If you are not registered, leave the tax line off the invoice altogether rather than showing it at zero, and bill the agreed amount as your total. Check your local rules or ask a tax professional.

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This article is general information, not tax advice. Consult a qualified tax professional.