Invoicing and Getting Paid: Practical Tips for Small Businesses

Key concepts in plain English

Invoice vs quote vs receipt

• Quote — a proposed price before the work is done
• Invoice — a request for payment for goods supplied or work done
• Receipt — proof that payment has been received

Keep the three separate so customers know what you are asking for.

Payment terms

Payment terms set when money is due — for example 7, 14 or 30 days from the invoice date, payment on receipt, or staged deposits for larger jobs. Choose terms you can explain calmly and apply consistently.

B2B vs consumer customers

Statutory interest and fixed debt-recovery costs for late commercial payments focus on business-to-business debts (and certain public authority debts). They are different from consumer credit rules. Do not assume the same late-payment toolkit applies to every private individual customer.

What a good invoice should include

Identity and contact

• Your business or trading name
• Address and contact email or phone
• Company number if you are a limited company
• VAT number if you are VAT-registered

Customer and job details

• Customer name and billing address
• Unique invoice number and invoice date
• Clear description of goods or services
• Quantity and rates
• Net amount, VAT if applicable, and total due

How and when to pay

• Payment terms and a plain due date
• Bank details (sort code and account number)
• Optional payment link

Invoice-divert fraud: if bank details change, confirm on a phone number you already trust — not only by email. Criminals sometimes send fake “new account” messages.

VAT invoice extras

If you are VAT-registered, HMRC sets extra particulars for VAT invoices. Check current HMRC guidance and business tax and HMRC for wider tax context.

Payment terms and late payment rules (UK)

Choosing 7, 14 or 30 days

There is no single right term for every business. Deposits or milestone invoices can help on larger projects. This is a plain feature comparison — no single option suits everyone.

When a commercial payment becomes late

According to GOV.UK (re-check before you act):

• If you agree a payment date, it must usually be within 30 days for public authorities or 60 days for business transactions (longer B2B periods must be fair to both sides).
• If you do not agree a date, payment is late 30 days after the customer gets the invoice, or after you deliver the goods or provide the service — whichever is later.

Statutory interest and fixed recovery costs

For qualifying late commercial payments, GOV.UK describes statutory interest as 8% plus the Bank of England base rate for business-to-business transactions. You cannot claim statutory interest if the contract sets a different interest rate. You cannot use a lower rate than the statutory rules allow on contracts with public authorities.

Look up the current Bank of England base rate (GOV.UK links to it) before you calculate interest, then follow GOV.UK’s method. Combined percentages and worked totals go out of date as soon as Bank Rate moves.

You can also charge a fixed debt-recovery sum once per late payment, depending on the debt size (GOV.UK):

Send a clear notice that references the original invoice if you add interest or recovery costs. The Small Business Commissioner publishes help and an interest calculator. This is not legal advice and not a promise of recovery.

Expert note — statutory vs contractual interest

Online payment options and integrations

Bank transfer

Faster Payments into a business bank account remain common. Use Confirmation of Payee where available, and stay alert to invoice-divert scams.

See also: Common UK money scams in 2026: how to spot them and what to do next

Card and payment links

Customers can pay by card through a link or payment gateway. Fees are often a percentage plus pence — compare fee features calmly. Card payments can also bring chargeback risk if a customer disputes the charge.

Direct Debit / recurring

Useful for retainers and subscriptions. Mandates and setup rules apply — check the provider’s process before you rely on them.

Accounting software integrations

Many people create invoices in bookkeeping software and mark them paid when the bank feed matches. See accounting and bookkeeping software.

Pay by Bank / open banking (brief)

Some checkouts and invoices offer pay-from-your-bank options. Rights and scam paths differ from cards — this page does not rewrite that consumer guide.

Example — tightening invoicing to improve cash flow

Illustration only — round figures, not a guarantee of higher income.

Lee is a sole trader web developer. Invoices went out at month-end with 30-day terms. Chasing often started late, and money sometimes arrived 45+ days after the work.

Lee tries a tighter process:

• Invoice on delivery or at each milestone, not only at month-end
• 14-day terms for new clients
• A deposit on larger projects (for example jobs over a round £1,000 threshold — Lee’s own rule of thumb)
• Same-day send from invoicing software
• Calendar reminders at day 7 and day 14
• Bank details locked in the invoice template

Before: work finished in week 1, invoice in week 4, cash often in week 8+. After: invoice the same day as the milestone, due two weeks later, with earlier reminders. Waiting time shrinks in this sketch — results still depend on the client.

Wider cash-flow habits: business expenses and cash flow.

The catch

Template checklist for a clear invoice

• Unique invoice number and date
• Your legal or trading name, address and contact details
• Company number (if Ltd) / VAT number (if registered)
• Customer name and billing address
• Clear description of work or goods and dates delivered
• Net, VAT (if any), total
• Payment terms and due date stated plainly
• How to pay (bank details and/or payment link)
• Purchase order number if the client uses one
• Late-payment interest wording only if you intend to rely on it and it fits B2B rules — optional; seek advice if unsure

Summary / key takeaways

• Put identity, job detail, totals, due date and payment method on every invoice.
• Choose 7, 14 or 30-day terms to match cash needs — there is no overall winner.
• For late B2B payments, GOV.UK sets statutory interest at 8% + Bank Rate and fixed recovery bands of £40 / £70 / £100 — re-check GOV.UK and today’s Bank Rate before you calculate anything.
• Bank transfer, cards, Direct Debit and software tools are options to compare by features and fees.
• Lee’s example shows earlier invoices and shorter terms can tighten cash timing — without promising more sales.
• Use the checklist, then confirm tax and legal points with GOV.UK or an adviser.
• More guides: Small Business Finance, accounting and bookkeeping software, business bank accounts, business expenses and cash flow, business tax and HMRC.

Related reading

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Invoicing and getting paid: FAQs

What is the difference between a quote, an invoice and a receipt?

A quote is a proposed price before the work is done. An invoice is a request for payment for goods supplied or work done. A receipt is proof that payment has been received. Keep the three separate so customers know what you are asking for.

What should a clear UK invoice include?

A clear UK invoice should include your identity and contact details (business or trading name, address, contact email or phone, company number if limited, VAT number if registered), customer name and billing address, a unique invoice number and invoice date, a clear description of goods or services with quantity and rates, net amount, VAT if applicable and total due, payment terms and a plain due date, and bank details or an optional payment link. If you are VAT-registered, HMRC sets extra particulars for VAT invoices.

How do 7, 14 and 30-day payment terms differ?

7-day terms often suit fast cash needs and small or familiar clients, though some customers prefer longer. 14 days is a middle path for many sole traders but still needs a chase habit. 30 days is a common B2B habit, but cash can sit unpaid longer. There is no single right term for every business and no overall winner.

What are the late commercial payment rules?

According to GOV.UK, if you agree a payment date it must usually be within 30 days for public authorities or 60 days for business transactions. If you do not agree a date, payment is late 30 days after the customer gets the invoice, or after you deliver the goods or provide the service — whichever is later. For qualifying late commercial payments, statutory interest is described as 8% plus the Bank of England base rate for business-to-business transactions. You can also charge a fixed debt-recovery sum once per late payment: £40 up to £999.99, £70 for £1,000 to £9,999.99, and £100 for £10,000 or more. Re-check GOV.UK and today’s Bank Rate before you calculate anything. This is not legal advice and not a promise of recovery.

How can customers pay online?

Customers can pay by bank transfer (Faster Payments into a business bank account), by card through a payment link or gateway, by Direct Debit or recurring mandates for retainers and subscriptions, or via accounting software integrations that create invoices and mark them paid when the bank feed matches. Some checkouts and invoices also offer pay-from-your-bank (open banking) options.

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