How to Invoice a Company as an Individual Freelancer (Without Waiting Three Months to Get Paid)

The short version: to invoice a company as an individual freelancer you need a proper invoice number, your legal or trading name, the client's correct billing entity (not just the person who hired you), a clear description of the work, your payment terms stated in days not vague words, and your bank details or payment link. Send it the day you finish the work, not the day you remember to. And chase it before it's late, not after.

I've been freelance, in one form or another, on and off for over twenty years. I've invoiced tiny startups, FTSE-listed companies, US agencies, and one Israeli tech firm that paid me in about four days flat because their finance director happened to like me. I've also waited 97 days for a payment from a company with a household name, because their "standard terms" were net 60 and their actual practice was net whenever-someone-remembers. So this isn't theory. This is what I do, and what I've had to fix after getting it wrong.

What a company invoice needs (the bit most freelancers skip)

When you invoice a company as opposed to a small local client, the stakes are different. There's an accounts payable team involved, sometimes a purchase order system, sometimes a portal you have to upload to. Miss a detail and your invoice doesn't get "queried", it gets quietly parked at the bottom of a pile until someone finally chases you asking why you never invoiced them. That happened to me with a national retailer in 2023. I'd sent the invoice. It just had the wrong reference number on it, so it never matched to their PO, and it sat unpaid for six weeks while I assumed it was in process.

So before anything else, get these on the page:

• Your name or trading name, address, and if you're VAT registered, your VAT number
• The company's full legal name, not the brand name (Innocent Drinks Ltd, not "Innocent")
• The correct billing address, which is sometimes a different office to the one you worked with
• A unique invoice number, sequential, never reused
• The invoice date and the due date, written out (not "30 days" but the actual calendar date)
• A description specific enough that finance doesn't have to email your contact to ask what it's for
• The amount, currency, and if relevant, VAT breakdown
• Your bank details or payment link
• A purchase order number, if they gave you one, front and centre

I go into every one of those in more depth, including the field almost everyone forgets, in this piece on what details every invoice must include. If you only read one other article after this one, make it that.

Step by step: sending your first invoice to a company

Here's the exact sequence I use, and teach to people starting out.

• Step 1. Confirm the billing details before you start work, not after. Ask: "who do I invoice, what's the legal entity name, and is there a PO number I'll need?" This one email saves you weeks later.
• Step 2. Agree payment terms in writing before you deliver anything. Not "we'll sort it out", an actual number of days.
• Step 3. Do the work, deliver it, get sign-off or acknowledgement that it's been received.
• Step 4. Invoice within 24 to 48 hours of delivery. Not the following month. Every day you delay is a day added to your own wait.
• Step 5. Send it to the named finance contact and cc the person who hired you. Both. Always both.
• Step 6. Diary the due date. Not "check in a while", an actual calendar reminder for the exact day.
• Step 7. If it's not paid within 3 to 5 days of the due date, chase. Politely, briefly, in writing.

That's it. Seven steps. Most freelancers do about four of them and wonder why cash flow is a nightmare.

The uncomfortable bit nobody tells you about payment terms

Here's what I've learned the hard way, and what a lot of freelance advice conveniently leaves out: a company's stated payment terms are not a promise, they're a starting position. Net 30 on the contract very often means net 45 to 60 in reality, because the invoice has to clear a queue, get approved by someone who's on annual leave, and then sit in a payment run that only happens twice a month. I once had a client whose finance system literally only ran payments on the 15th and last day of the month. If your invoice landed on the 16th, you'd already lost two weeks before the clock even started.

This isn't a reason to be precious about it, but it is a reason to never accept vague terms. If a company says "we pay within 30 days", ask "30 days from the invoice date, or 30 days from your internal approval?" Those are two very different numbers, and companies know that. I ask this question on every new company contract now, because I got burned enough times not asking it.

The other thing nobody says out loud: being too polite costs you money. I used to write these apologetic little chase emails, "so sorry to bother you, just wondering if you'd had a chance to look at this." That gets you moved further down the pile, not up it. A short, direct, unemotional message gets paid faster. Something like: "Hi, invoice 0047 was due on the 12th and I can see it hasn't come through yet. Can you confirm when it's scheduled for payment?" No apology. No self-flagellation. Just a fact and a question.

A real example: what happened with a marketing agency in Leeds

A few years ago I did a three-month consulting stint for a marketing agency in Leeds, invoicing them monthly at a fixed day rate. First invoice, paid in 12 days, lovely. Second invoice, I sent it a week late because I'd been travelling for work and hadn't sat down to do it. That single week delay meant it landed just after their monthly payment run, and I ended up waiting 38 days for money that should have taken 14.

The lesson stuck with me: my own lateness compounds against their internal deadlines, not just adds to them. Now I invoice the same day I finish a milestone, every time, no exceptions, because I've felt what it costs to be casual about it.

Invoice numbering and why it matters more than you think

Use a system and stick to it. I use the year and a sequential number, so my invoices go INV-2026-001, INV-2026-002, and so on. Some freelancers use client initials plus a number. It doesn't matter which system you pick, it matters that you never skip, never reuse, and never send two invoices with the same number to different clients. If HMRC or the IRS ever wants to see your records, or a company's finance team wants to reconcile what they've paid you across a year, a clean sequential system saves everyone time, including you.

If you want the fuller version of this, including how to word the description line so it never gets queried, I put together a full checklist in how do you invoice a customer correctly, which covers business clients specifically, not just individuals.

What format should the invoice be in

PDF, always. Not a Word document someone can edit, not an image, not an email with the numbers typed in the body. A PDF looks professional, it can't be accidentally altered, and most accounts payable systems expect it as an attachment they can file. You don't need expensive software to make one, a simple template in Google Docs or Canva exported as PDF does the job for years one and two of freelancing. Once you're invoicing multiple companies a month, invoicing software earns its cost purely in the time it saves you chasing and reconciling.

Getting paid across currencies and countries

If you're invoicing a US company from the UK, or working across time zones like I do between the UK, the US, and Israel, state the currency clearly on the invoice itself, not just implied by your bank details. I write "GBP" or "USD" directly next to every amount now, because I once had a company quietly convert a GBP invoice at their own exchange rate and pay me nearly 40 pounds short, not maliciously, just an internal system default. A one word fix, "GBP", would have prevented it entirely.

What to do when a company simply doesn't pay

This happens to every freelancer eventually. Here's the order I follow:

• Send a firm, factual chase email referencing the invoice number and original due date
• Follow up by phone if email gets no response within 3 working days
• Escalate to whoever hired you directly, not just finance, since they often have more internal pull than you'd expect
• Send a formal late payment notice referencing statutory late payment interest (in the UK this is currently 8% above the Bank of England base rate under the Late Payment of Commercial Debts Act)
• Consider a solicitor's letter or Money Claim Online for amounts under 10,000 pounds in the UK, which costs very little relative to what's owed

Most non-payment isn't malicious, it's neglect. But a small number of companies rely on freelancers being too embarrassed or too busy to chase. Don't be that freelancer. The invoice is a legal document and you're entitled to be paid on the terms you agreed.

Different freelance work, same invoicing rules

Whether you're a copywriter, a designer, a consultant, or picking up work through freelance platforms, the invoicing fundamentals don't change even though the client relationship does. Designers in particular often undercharge and underinvoice because they're uncomfortable putting a number on creative work. I wrote about this in how graphic designers really make money, and the invoicing habits there apply whatever your discipline is. And if you're newer to freelancing and still finding steady company clients in the first place, it's worth reading how to find real freelance writing jobs on freelance platforms, because the invoicing problem only really starts once the client relationship does.

A quick note on tax and paperwork

As an individual freelancer invoicing a company, you're responsible for your own tax, whether that's self-employment tax through HMRC in the UK or a Schedule C in the US. Keep every invoice you send and every payment you receive matched up in a simple spreadsheet at minimum. It doesn't need to be complicated in year one, it needs to exist. I've met freelancers three years in who still can't tell you, without an hour of digging, how much a specific client has paid them across a year. That's not a tax problem waiting to happen, it's already happening, you just haven't been caught yet.

If that raises the next question, see Can You Invoice Your Own Company as a Director? Here’s the Real Answer.

Related: hr tech (this site).

To find any document in seconds, see my guide to the best document management software. If you bill by the hour or wonder where your week goes, my roundup of the best time tracking software compares the options.

Frequently asked questions

Do I need to register as a business to invoice a company as an individual?

In most cases no, you can invoice as a sole trader or self-employed individual without forming a company, though you should register as self-employed with HMRC (or the equivalent in your country) once you start earning through it. Many companies will pay an individual invoice with no issue as long as the invoice includes your name, address, and payment details.

What's the difference between invoicing a company and invoicing a private client?

Companies usually route invoices through an accounts payable process rather than paying you directly, which means details like PO numbers, exact legal entity names, and correct invoice numbering matter far more, and payment can take longer even when terms look identical to a private client.

Should I add VAT to an invoice sent to a company?

Only if you're VAT registered, and if you are, you must add it regardless of whether the client is a company or an individual, since VAT registration applies to you, not to the client type. If you're not VAT registered, don't add a VAT line at all.

What's a reasonable payment term to set with a new company client?

14 to 30 days is standard practice for individual freelancers, and I'd recommend 14 days for new clients you don't yet have payment history with, moving to 30 days only once they've paid you reliably at least twice.