Can I send an invoice if I'm not VAT registered?

Yes. Most sole traders aren't VAT registered, and they still invoice in the normal way. Your invoice simply shows no VAT, no VAT rate and no VAT number. You can't add VAT until HMRC has given you a VAT registration number. Registration becomes compulsory when your taxable turnover passes £90,000 in a rolling 12 months.

Do I need to put my UTR on my invoices?

No. Your Unique Taxpayer Reference isn't on GOV.UK's list of invoice details, and there's no reason to print it on every bill. Give it only to people who genuinely need it, such as a construction contractor verifying you under the Construction Industry Scheme or an accountant acting for you.

What payment terms should a sole trader use?

You can set your own terms, for example 14 days, 30 days or payment on completion. If you agree nothing with a business customer, the law treats the bill as late 30 days after they receive the invoice or the work is done, whichever is later. Agreed business terms should usually be no more than 60 days. State the due date as a calendar date on the invoice.

Can a sole trader charge interest on late invoices?

Yes, if the customer is a business. Under the Late Payment of Commercial Debts (Interest) Act 1998 you can claim statutory interest at 8% above the Bank of England base rate, plus fixed compensation of £40, £70 or £100 depending on the debt. The Act doesn't cover sales to consumers.

Can I use my own name instead of a business name on invoices?

Yes. Many sole traders invoice in their own name, for example "Sam Okafor, Garden Maintenance". If you trade under a different name, such as "Greenline Gardens", the invoice must also show your own full name and an address where documents can be served on you. It must never include Ltd, LLP or plc.

Finance & accounting

How to Write a Sole Trader Invoice in 2026: What to Include, Numbering and Payment Terms

How to write a sole trader invoice in 2026: what UK law requires if you're not VAT registered, numbering, payment terms, late payment interest and a worked example.

Edited by Sumeet YadavFounder & editor, MSMETOOLS · fact-checked against official sources

Updated October 2026 Verified against official sources 12 October 2026 19 min read

How to write a sole trader invoice — MSMETOOLS guide cover

Contents (12)

1. Do sole traders have to issue invoices?
2. What a sole trader invoice must include
3. Invoicing under a trading name
4. Invoicing when you're not VAT registered
5. How to number your invoices
6. Setting payment terms
7. When a customer pays late
8. Worked example: a non-VAT-registered sole trader
9. Tools and templates: spreadsheet, generator or software?
10. Common sole trader invoice mistakes
11. Keeping your invoice records
12. What to do next

Sending your first invoice is the moment a side project starts to feel like a business, and it's also where many new sole traders make small mistakes that slow down payment. This guide is for self-employed people in England, Wales, Scotland and Northern Ireland who aren't VAT registered, which is most sole traders. It sets out what GOV.UK says an invoice must include, the extra rule if you use a trading name, how to number invoices, what payment terms to choose, and what you can do when a customer pays late, with a worked example in pounds.

Quick answer

A sole trader invoice must show a unique invoice number, your name and any business name, your address and contact details, the customer's name and address, a clear description of what you supplied, the supply date, the invoice date, the amounts charged and the total owed. If you're not VAT registered, show no VAT and no VAT number.

Using a trading name? Add your own full name and an address where legal papers can be served
Number invoices in one unbroken sequence and never reuse a number
No agreed terms with a business customer: payment is late after 30 days
Late business payers owe statutory interest at 8% above base rate plus fixed compensation
Keep copies for at least 5 years after the 31 January filing deadline

Do sole traders have to issue invoices?

There's no general law that says a sole trader must send an invoice for every job. GOV.UK says an invoice is legally required when both you and your customer are VAT registered, and in that case it has to be a full VAT invoice. If you aren't VAT registered, an invoice is a commercial document rather than a legal obligation.

In practice you'll still want to invoice almost every business customer. Companies and public bodies usually can't pay a supplier without one, because their accounts team needs a document to approve and file. An invoice also fixes the amount, the date the work was done and when payment is due, which is the evidence you'll rely on if a customer later disputes the bill or pays late.

For private customers the picture is looser. A plumber who's paid on the doorstep might hand over a receipt instead, and a market trader might give nothing at all unless asked. An invoice asks for payment; a receipt confirms you've been paid. If someone has already paid, our receipt generator produces the right document.

Whatever you send, every sale has to go in your records. HMRC's guidance on self-employed records lists sales invoices, till rolls and bank slips as proof you should keep, and your invoices are often the backbone of the income figure on your Self Assessment return.

What a sole trader invoice must include

GOV.UK's guide to invoicing lists the details every invoice should carry. None of them depend on VAT registration, so they apply to a window cleaner in their first month as much as to an established consultant.

The details every sole trader invoice needs

0/10

A few of these items deserve a closer look.

The description. "Work as agreed" isn't a clear description. Say what you did, where and when: "Garden clearance at 14 Mill Lane, 2 October, including removal of green waste (two loads)". A precise description heads off disputes and helps the customer's bookkeeper match your invoice to their order.

The supply date and the invoice date. These are often different. If you finished a job on 30 September and invoice on 3 October, show both. For a job that ran over several days, give the date range. The supply date matters for the customer's records, and it's the anchor for the legal payment period if you haven't agreed terms.

The amounts. List each item or service on its own line with the quantity and price, then the total. If you charge by the hour or by the day, show the rate and the number of hours. If you're passing on a cost, such as materials or a skip hire, say so. Don't call any part of the price "VAT" unless you're registered.

The customer's details. For a business, use its legal name. For a limited company, that's the full name on the Companies House register, not just the brand on its van. If you're invoicing an individual, their name and the address of the job are usually enough.

What doesn't need to be on it

Several things people often add aren't legal requirements. You don't need a logo, a company registration number (sole traders don't have one) or your Unique Taxpayer Reference. GOV.UK's list doesn't include your UTR, and it's personal tax information, so keep it off your invoices. The main exception is construction: under the Construction Industry Scheme a contractor needs your UTR to verify you with HMRC, but you give it to them once rather than printing it on every bill. See our CIS registration guide for how that works.

Bank details and payment terms aren't on GOV.UK's minimum list either, but leaving them off is the single most common reason a sole trader's invoice sits unpaid. Include the account name, sort code and account number, the due date and the invoice number to quote as the payment reference.

A rope-access window cleaner working on the glass facade of a tall building — Window cleaners, gardeners, tutors and tradespeople make up a large share of UK sole traders. Most aren't VAT registered, so their invoices carry no VAT at all.· Image: It's No Game (Flickr) (CC BY 2.0)

Invoicing under a trading name

As a sole trader you can work under your own name, such as "Priya Shah", or under a business name, such as "Shah Bookkeeping" or "Northlight Photography". GOV.UK's guidance on choosing a business name says you must include your name and your business name, if you have one, on official paperwork such as invoices and letters. A sole trader name can't include "Limited", "Ltd", "LLP" or "plc", because that would suggest a company you don't have.

If the name you trade under isn't simply your surname, with or without your first name or initials, the business names rules in Part 41 of the Companies Act 2006 apply. The Trading Standards Business Companion guide summarises them. You must show your full name and an address in the UK where you can be contacted and legal documents can be served. The rule covers letters, written orders for goods or services, invoices and receipts, and written demands for payment. You also have to display the same details at any premises customers or suppliers visit, and give them in writing straight away to anyone you deal with who asks.

The easy way to comply is a footer on your invoice template, for example: "Northlight Photography is the trading name of Priya Shah. Address for service: 22 Albion Street, Leeds LS1 6AA." Do this once in your template and every invoice is covered. Our guide to sole trader business names covers the naming rules, sensitive words and when a trade mark is worth it.

Your bank account should line up with the name on the invoice. If customers pay "Northlight Photography" and the account is in your personal name, some banks' name-checking services will flag a mismatch to the payer. Ask your bank whether it can show the account as "Priya Shah t/a Northlight Photography".

Invoicing when you're not VAT registered

Most sole traders sit below the VAT registration threshold of £90,000 of taxable turnover in a rolling 12 months, so their invoices carry no VAT. That means:

no VAT number on the invoice
no VAT rate or VAT amount on any line
no wording such as "price excludes VAT" that suggests VAT will be added

Charging an amount described as VAT when you aren't registered is a serious matter, because you'd be collecting money that looks like tax but isn't paid to HMRC. Your price is simply your price. Some sole traders add a line such as "Not VAT registered" to stop business customers asking where the VAT is; that's optional but helps.

When you're about to register

Once you go over the threshold, or register voluntarily, the rules change. HMRC's registration guidance says you can't include VAT on your invoices until you get your VAT registration number. While you wait, you can increase your prices to cover the VAT you'll owe for the period since your effective date of registration. When the number arrives, you reissue those invoices showing the VAT, so your business customers can reclaim it.

Moving from non-VAT to VAT invoices

Step 1

Turnover passes £90,000 (rolling 12 months)

Step 2

Apply to register

Step 3

Waiting for VAT number

no VAT on invoices; raise prices

Step 4

Number arrives

reissue invoices with VAT

Step 5

Full VAT invoices from then on

From your effective date of registration, every invoice to a VAT-registered customer must be a full VAT invoice with your VAT number, the tax point, the VAT rate per line and the VAT total in sterling. Our guide to VAT invoice requirements sets out every detail. Mandatory e-invoicing, planned from 2029, applies to VAT invoices; a sole trader who isn't VAT registered isn't affected by it.

How to number your invoices

GOV.UK requires "a unique identification number". The law doesn't prescribe a format, but a simple, unbroken sequence works best and is what an HMRC officer or accountant expects to see.

Numbering style	Example	Good for
Plain sequence	0001, 0002, 0003	Most sole traders starting out
Year prefix	2026-001, 2026-002	Seeing at a glance which tax year an invoice belongs to
Customer prefix	ACME-01, ACME-02	Several invoices a month to the same client
Initials and sequence	NP-0145	Avoiding a clash with the customer's own reference numbers

Whatever you pick, a few rules keep your records clean:

Never reuse a number. Each number should point to exactly one document.
Don't delete a mistaken invoice. Mark it cancelled and keep it, then issue a new one with the next number. Gaps raise questions in a tax enquiry; a cancelled invoice in the file answers them.
Use credit notes for refunds and reductions. If a customer returns goods or you agree a discount after invoicing, issue a credit note that refers to the original invoice number and date. Our credit note generator includes those fields.
Start wherever you like, then stay continuous. Some sole traders start at 101 rather than 001 so a first client doesn't feel like the first. That's allowed; what matters is an unbroken sequence from that point on.

There's no requirement to restart numbering each tax year. If you use a year prefix you'll naturally restart, which is fine as long as each full number remains unique.

Setting payment terms

GOV.UK says you can set your own payment terms, including discounts for early payment and payment upfront. Common choices for sole traders are payment on receipt, 7 days, 14 days or 30 days. Pick something you can live with and write it on every invoice as a calendar date: "Payment due by 31 October 2026" is clearer than "14 days" because nobody has to work out when the 14 days started.

If you don't agree a payment date, the law fills the gap. For business customers, payment becomes late 30 days after the customer receives your invoice or after you deliver the goods or service, whichever is later. If you do agree terms, they should usually be no more than 30 days where a public authority is paying and 60 days for business-to-business deals. Longer business terms are allowed only if they're fair to both sides.

The best time to agree terms is before you start work. Put them in your quote or a short written agreement, then repeat them on the invoice. Big customers often have their own standard terms that override yours, so read the purchase order carefully. A 60 days term on a £4,000 job can mean waiting two months for money you've already spent on materials.

Deposits and staged payments

For larger jobs, ask for a deposit or stage payments rather than one invoice at the end. A decorator quoting £3,600 might invoice £1,000 when booking, £1,600 at the halfway point and £1,000 on completion. Each stage gets its own invoice number and description ("Stage 2 of 3: hall, stairs and landing"). That keeps your cash flow steady and limits what's at risk if a customer stops paying.

British pound sterling banknotes fanned out on a table — Clear payment terms, bank details and a quoted reference on every invoice are the cheapest way to get paid on time.· Image: raisin_raisin (Flickr) (CC BY 2.0)

When a customer pays late

If a business customer misses the due date, the Late Payment of Commercial Debts (Interest) Act 1998 gives you three things, even if your terms say nothing about interest:

Statutory interest at 8% a year above the Bank of England base rate. For debts that became late between 1 July and 31 December 2026 that's 11.75% a year, simple interest, running daily.
Fixed compensation for the cost of recovering the debt, once per invoice.
Reasonable extra recovery costs where the fixed sum doesn't cover them.

Fixed compensation on a late business invoice

Amount of the debt	Fixed sum you can claim
Up to £999.99	£40
£1,000 to £9,999.99	£70
£10,000 or more	£100

Up to £999.99

Fixed sum you can claim: £40

£1,000 to £9,999.99

Fixed sum you can claim: £70

£10,000 or more

Fixed sum you can claim: £100

You can't claim statutory interest if your contract sets a different interest rate, and the Act doesn't apply to consumers. GOV.UK says that if you decide to add interest, you should send a new invoice showing it. Many sole traders choose not to charge interest to a good customer who's a few days late, but knowing the right exists makes a polite reminder firmer. Our guide to late payment interest shows the calculation step by step, and the payment reminder generator drafts the chasing emails.

The government's Commercial Payments Bill would tighten late payment rules for larger firms paying smaller suppliers. When we checked in October 2026 its status was: Lords third reading scheduled 20 October 2026; not yet law. Until it becomes law, the rules above are the ones that apply.

If an undisputed debt still isn't paid after reminders and a final letter, GOV.UK points to a statutory demand as one formal option, and the small claims track of the county court is another. If you take card payments, be aware that a customer can ask their card issuer for a chargeback up to 120 days after the transaction, for example if goods never arrived.

Worked example: a non-VAT-registered sole trader

Sam Okafor is a self-employed gardener in Bristol, trading as "Greenline Gardens". He isn't VAT registered because his turnover is well under £90,000. In October he finishes a two-day job for a letting agency, Harbourside Lettings Ltd, at one of its rental properties.

Greenline Gardens — invoice GG-2026-047

Description	Quantity	Rate	Amount
Garden clearance and hedge cutting, 9 Ashton Road (6–7 October)	14 hours	£28.00	£392.00
Green waste removal and disposal	2 loads	£45.00	£90.00
Bark mulch supplied and laid	10 bags	£6.50	£65.00
Total due (not VAT registered — no VAT charged)			£547.00

Garden clearance and hedge cutting, 9 Ashton Road (6–7 October)

Quantity: 14 hours
Rate: £28.00
Amount: £392.00

Green waste removal and disposal

Quantity: 2 loads
Rate: £45.00
Amount: £90.00

Bark mulch supplied and laid

Quantity: 10 bags
Rate: £6.50
Amount: £65.00

Total due (not VAT registered — no VAT charged)

Quantity
Rate
Amount: £547.00

Around that table, Sam's invoice shows:

the invoice number GG-2026-047 and the invoice date, 8 October
the supply dates, 6 and 7 October
"Greenline Gardens", plus the footer "Greenline Gardens is the trading name of Sam Okafor", with his address for service, phone and email
the customer's legal name, Harbourside Lettings Ltd, and its registered office address
payment terms: "Payment due by 22 October 2026" (14 days), with his account name, sort code, account number and "Please quote GG-2026-047"

Suppose Harbourside pays on 21 November, 30 days after the due date. Because it's a business debt, Sam could claim statutory interest of £547.00 × 11.75% ÷ 365 × 30, which is about £5.28, plus fixed compensation of £40 because the debt is under £1,000. He'd send a fresh invoice, GG-2026-052, for £45.28 referring to the original. Whether he does is a commercial choice; a regular client might get a warning instead.

On Sam's tax return, the £547 counts as income when he's paid if he uses the cash basis, which is now the default method for sole traders, so it goes in the tax year containing 21 November. If his gross income ever passes £90,000 in 12 months, he'll need to register for VAT and switch to VAT invoices.

Tools and templates: spreadsheet, generator or software?

You can produce a valid invoice in a word processor, a spreadsheet, a free generator or accounting software. The law cares about the contents, not the tool. What changes is how much admin you do afterwards.

A template in a word processor is fine for a handful of invoices a month, but you'll be typing numbers by hand, which is how duplicates creep in. A free invoice generator fills in the fields above, totals the lines and lets you download a PDF to email. Accounting software goes further: it numbers invoices automatically, records them in your books, tracks who's paid and can send reminders.

That last point matters more from 2026. Making Tax Digital for Income Tax started on 6 April 2026 for sole traders and landlords with qualifying income over £50,000, and the threshold falls to £30,000 from April 2027 and £20,000 from April 2028. If you're in scope, you must keep digital records and send quarterly updates through compatible software. Invoicing inside that software saves you re-entering every sale. See our guide to Making Tax Digital for who's affected.

Ways to produce your invoices

	Word or spreadsheet template	Free invoice generator	Accounting software
Cost	Free	Free	Monthly subscription
Automatic numbering	No — typed by hand	You set the number	Yes
Records the sale in your books	No	No	Yes
Tracks who has paid	No	No	Yes, with reminders
Works for MTD for Income Tax	Only with bridging software	No	Yes, if HMRC-recognised
Best for	A few invoices a year	Occasional invoicing, quick PDFs	Regular invoicing or MTD users

Cost

Word or spreadsheet template: Free
Free invoice generator: Free
Accounting software: Monthly subscription

Automatic numbering

Word or spreadsheet template: No — typed by hand
Free invoice generator: You set the number
Accounting software: Yes

Records the sale in your books

Word or spreadsheet template: No
Free invoice generator: No
Accounting software: Yes

Tracks who has paid

Word or spreadsheet template: No
Free invoice generator: No
Accounting software: Yes, with reminders

Works for MTD for Income Tax

Word or spreadsheet template: Only with bridging software
Free invoice generator: No
Accounting software: Yes, if HMRC-recognised

Best for

Word or spreadsheet template: A few invoices a year
Free invoice generator: Occasional invoicing, quick PDFs
Accounting software: Regular invoicing or MTD users

Common sole trader invoice mistakes

These are the problems that most often delay payment or cause questions later:

No due date or bank details. The customer can't pay what they can't action. Put both on every invoice.
Trading name only. If you use a business name, your own full name and an address for service must be there too.
Adding "VAT" when you aren't registered. Only registered businesses can charge VAT.
Vague descriptions. "Services rendered" invites a query from the customer's accounts team. Say what, where and when.
Wrong customer name. Invoicing a brand name instead of the legal entity can mean the invoice is rejected, and makes court action harder if it comes to that.
Duplicate or missing numbers. Keep cancelled invoices and use credit notes rather than editing old ones.
Not keeping copies. Every invoice is part of your business records.
Mixing up invoices and receipts. Once the customer has paid, any document you send confirming it is a receipt.

Keeping your invoice records

Your sales invoices are part of the business records HMRC expects you to keep. GOV.UK says you must keep records for at least 5 years after the 31 January submission deadline for the tax year. So invoices for the 2025-26 tax year, whose return is due by 31 January 2027, should be kept until at least the end of January 2032. Digital copies are fine as long as they're complete and readable.

From the 2024-25 tax year, the cash basis is the default for sole traders: you record income when you're paid, not when you invoice. Under the cash basis an unpaid invoice isn't yet income, but keep a list of what's outstanding anyway so you know who to chase. If you've opted out to use traditional accounting, invoices count as income on the invoice date even if the money arrives in the next tax year, and you'll need to report debts owed to you at your year end. Our cash basis guide explains the choice, and how long to keep business records covers every retention period.

Official GOV.UK links

What to do next

If you haven't already, register as a sole trader with HMRC: you need to once your self-employed income is over £1,000 in a tax year, by 5 October after the end of the tax year you started. Then build one invoice template with your name, any trading name and the footer disclosure, your bank details and a clear due date, and use it for every job. The free invoice generator is the quickest way to start. If a customer drags their feet, read our guide to late payment interest before you send the second reminder.

This is general information, not legal or tax advice — confirm on the official source or with a professional.

Frequently asked questions

GOV.UK lists a unique invoice number, your name and any business name, your address and contact details, the customer's name and address, a clear description of the work or goods, the supply date, the invoice date, the amounts charged and the total owed. If you trade under a business name, add an address where legal documents can be delivered to you. VAT only appears if you're VAT registered.

Sources & verification

Figures on this page were checked against the sources below when it was last reviewed on 12 October 2026. Each rate and limit is stored once with its own official source and review date, and official update channels are monitored daily so changes are picked up. How we verify

1.Invoicing and taking payment from customers — GOV.UK · accessed 12 October 2026
2.Late commercial payments: charging interest and debt recovery — GOV.UK · accessed 12 October 2026
3.Business records if you're self-employed — HMRC / GOV.UK · accessed 12 October 2026
4.Set up as a sole trader — GOV.UK · accessed 12 October 2026
5.Become a sole trader: choose your business name — GOV.UK · accessed 12 October 2026
6.Register for VAT: how to register — HMRC / GOV.UK · accessed 12 October 2026
7.Company and business names (quick guide) — Business Companion (Chartered Trading Standards Institute) · accessed 12 October 2026

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