Home / Guides / How to Invoice a Client
Knowing how to invoice a client is the difference between getting paid in days and chasing money for months. The invoice itself is only half of it: what you collect beforehand, the terms you set, and how you follow up decide when the cash actually lands. Here is the whole process — from the first invoice to the one that finally gets paid.
What Information Do You Need Before Invoicing a Client?
Start with the client\u2019s legal name, not the person you chat with. A business pays from its official entity — the name on its tax records, not "Mike in marketing" — and a wrong legal name alone can bounce a payment back.
Then get the accounts payable details: the billing address, the finance email, and any purchase order number. A missing PO number can stall a $3,800 invoice in a corporate finance queue for weeks, no matter how perfect the invoice is.
Have your own details ready before you start: business name, address, tax number, and bank details. Nothing slows a payment like hunting for your account number after the client is ready to pay.
- Client\u2019s legal business name and billing address
- Accounts payable email and contact person
- Purchase order (PO) number
- Your business name, address, and tax number
- Your bank details or a payment link
- The agreed rate, scope, and due date
A Charlotte, North Carolina designer keeps this in a client sheet. It takes ten minutes to fill in once, and it turns every future invoice into a two-minute job.
How to Invoice a Client for the First Time
Send the first invoice the day the work ends, addressed to the legal entity, with the PO number and your terms on it. That first invoice also does quiet marketing: it tells the client you run a serious business.
The trap with new clients is that they have no vendor record yet. Many companies need your W-9 or a bank form before they can pay anyone, and that paperwork takes a week to process. Send it before the work starts, and the invoice arrives at a client who is already set up to pay.
A Brooklyn developer sent his W-9 the day his first contract was signed. When the invoice for his $4,200 build went out, the startup\u2019s finance team approved it in six days instead of six weeks.
Close the loop with one message asking whether the invoice arrived and who handles it. That single check prevents the silent failure where the invoice sits in a spam folder while your due date sails past.
How to Invoice a Client for Ongoing Work
Ongoing work runs on rhythm. Pick one date a month, invoice on that date every month, and the client\u2019s finance team learns to expect it. Same amount, same date, same numbering — the invoice becomes routine instead of a surprise.
Bigger projects bill by milestone. A San Diego copywriter charges $9,000 per website project and invoices $3,000 at each of three stages — the client never sits on one large bill, and she never works unpaid.
For a client who sends three tiny jobs a week, invoicing each one creates noise. A Chicago social-media manager consolidates the month into one invoice for $1,850 and one payment, and her client\u2019s bookkeeper prefers it that way.
Attach the breakdown when you track hours or tasks. An itemized list answers the follow-up questions before anyone asks them.
What Payment Terms Should You Give a Client?
The term is the number of days after the invoice date that the client pays: net 7, net 14, net 30. Shorter terms get paid faster, and net 30 — the US default — means your money sits out for a full month.
Match the term to the risk. New clients and large projects get shorter terms plus a deposit: an Austin web studio pairs a 50% deposit with net 14 on the balance for new clients, and moves established clients to net 30.
A deposit does more than cover your costs — it makes the client commit. Half up front is the standard for new or large work, and it covers you if the project dies halfway through.
A deposit is the only payment term a client cannot ignore. The client who has already paid you something thinks of the project as theirs from day one — and pays the balance like it is their own debt, not your problem.
Put the late policy on the invoice: 1.5% per month, the ceiling in most US states, or a flat fee. You do not have to charge it, but the terms exist so you can when a client forces the issue.
Country norms matter too. Net 30 is standard in the United States, the United Kingdom and Australia default to 30 days by statute, and Canada leaves the terms to negotiation. Whatever you choose, write the due date in plain words — "Due: August 30, 2026" — not "due in 30 days."
How to Invoice International Clients
Pick one currency and put it on the invoice: yours or the client\u2019s. Invoicing in your own currency pushes the conversion cost onto the client, while invoicing in theirs makes the amount predictable.
Conversion fees eat cross-border invoices if you do not look. A €2,400 invoice from a Berlin startup costs about €96 in PayPal fees and conversion, while a mid-market transfer service lands closer to €24 — a difference worth a month of coffee on every single invoice.
When a US company hires you, expect to send a W-8BEN form before the first invoice. Without it, they withhold 30% of your payment for US tax, and the form itself takes five minutes to file online.
Within the EU, business-to-business invoices are usually reverse-charged. You write "reverse charge" on the invoice and bill your net amount, and the client handles the VAT in their own country.
EU clients pay by IBAN transfer, which is free inside the bloc, while US clients pay by ACH, wire, or card. A $25–$50 wire fee can swallow a small invoice, so a payment link beats a wire for anything under $500. A Sydney designer bills her Berlin startup in euros the same way, and the numbers match on every statement.
What to Do When a Client Doesn't Pay
Most late payments are oversights, not hostility. The ladder starts friendly and escalates on a schedule you set the day you send the invoice.
- Day 3: gentle nudge — "just checking everything is clear on the invoice"
- Day 7: firm reminder with the invoice attached and the late policy named
- Day 14: final notice — payment due within seven days, future work paused
- Day 21: stop work and stop new work until the balance clears
- Interest: UK clients owe 8% above the Bank of England base rate under the Late Payment Act; US rates are set state by state; Australian interest runs only from a court judgment
- Small claims: UK money claims online and US small claims courts handle amounts up to a few thousand dollars without lawyers
A Melbourne freelancer chased a $2,400 logo debt through the same ladder. The client paid on day 16, the day after her final notice, and what carried it was record-keeping — every message in one thread, dates and amounts written down, nothing said in anger.
The rules of the chase: never threaten, never cancel delivered work, and never shame a client publicly. When the money lands, thank the client and send the receipt the same day — Invoha\u2019sreceipt generator does it in seconds.
The best cure is prevention. A client who paid a deposit and signed up to net 14 rarely needs the ladder at all.
Frequently Asked Questions
When should I send a reminder for an unpaid invoice?
Three days after the due date, with a gentle nudge, then a firm reminder on day seven. Most freelancers wait two weeks out of awkwardness, and every silent day teaches the client the invoice can wait.
Should I charge late fees, and how much?
Only if the invoice said so. 1.5% per month is the ceiling in most US states, and a flat fee is common elsewhere. Charge from day eight, and waive it the first time a good client pays late.
Do I need a contract before invoicing a client?
You need the agreement in writing before the work starts: scope, rate, payment terms, and who owns the finished work. An invoice proves you billed; a contract proves the client agreed to the bill.
How do I invoice a client in a foreign currency?
Pick one currency and write it on the invoice. Use a mid-market transfer service instead of a card or wire to avoid 3\u20134% conversion fees, and confirm the client\u2019s IBAN or account details before you send the invoice.
Can I stop working for a client who doesn't pay?
Yes, for unpaid work that has not been delivered. Stop on day 21, say so in writing, and resume when the balance clears. Delivered work is yours to invoice, not to take back.
Do I charge tax when invoicing a client abroad?
Usually not. Within the EU, cross-border business invoices are reverse-charged, so the client handles the VAT. Foreign freelancers billing a US company send a W-8BEN and bill net of US tax. Check your own country\u2019s rules before you guess.
Create Your Invoice Now — Free
Invoha\u2019s free invoice generator puts the whole process on one page: fill in the details, set the terms, and download the PDF in seconds. No sign-up, no watermark, and your data never leaves your device.