Payment Request Template: Letter vs Invoice and Free Sample

Quick answer: A payment request template asks a customer to pay a set amount by a set date. Use it before work starts (deposits, retainers, materials) or after an invoice is overdue (a request for payment letter). It should state who is paying whom, what the money covers, the amount, due date, how to pay and the invoice or quote it relates to.

Not every request for money is an invoice. Sometimes you need cash before you can start, such as a deposit to secure a booking or to buy materials. Sometimes an invoice already exists and you need a firmer nudge to get it paid. A payment request template covers both situations, and choosing the right format keeps your records clean and your customer clear about what they owe. You can produce both kinds of document in our free invoice generator.

This guide explains the difference between a payment request, a request for payment letter and an invoice, gives templates for each, shows UK late payment interest worked out with real numbers and lists the mistakes that slow payment down.

What is a payment request template?

A payment request template is a reusable format for asking a customer to pay. It comes in two broad types:

• Advance payment request. Sent before the goods or services are supplied: a deposit, retainer, booking fee, materials payment or subscription in advance. It is close to a pro forma invoice.
• Request for payment letter. Sent after an invoice is due or overdue, asking for settlement and setting out the next steps. It is part of your collections process alongside payment reminder emails.

In both cases the request is not the core accounting record of the sale. That job belongs to the invoice, as explained in our guide to what an invoice is.

Payment request vs invoice: what is the difference?

Feature	Advance payment request	Invoice	Request for payment letter
When sent	Before supply	At or after supply	After the due date
Records a sale?	No, requests money in advance	Yes	No, chases an existing invoice
Tax document?	Usually not (mark it as not a VAT invoice in the UK)	Yes, the main tax record	No
Numbering	Separate request series	Sequential invoice number	References the invoice number
Typical tone	Neutral, practical	Neutral	Polite, then firmer

For UK VAT-registered businesses this distinction has tax consequences. HMRC's VAT guide (Notice 700) says pro forma invoices cannot be used as evidence to reclaim input tax and should be clearly marked "this is not a VAT invoice". When you then supply the goods or services or receive payment, you issue a proper VAT invoice. HMRC also notes that VAT is due on deposits that are part payments for a supply, so a paid deposit can create a tax point. This is general information, not tax or legal advice.

Advance payment request template

Use this structure when you need money before you start:

• Title: "Payment Request" or "Deposit Request", not "Invoice".
• Request number: a separate series such as PR-2026-014, so requests never collide with invoice numbers.
• Your details and the customer's.
• Reference: the quote, estimate or contract number. See our estimate template if you do not issue quotes yet.
• What the payment covers: for example "40% deposit for kitchen design project as per quote Q-118".
• Amount and currency.
• Due date and what happens if it is missed (for example, the booking is released).
• Payment methods and reference to quote.
• Refund and cancellation terms.
• Tax note: in the UK, "This is not a VAT invoice. A VAT invoice will be issued on payment."

Retainers, milestones and subscriptions

The same template works for other kinds of advance billing. A retainer request asks for a fixed sum each month in return for reserved time; state the period it covers and what happens to unused hours. A milestone request asks for the next stage payment on a longer project; reference the milestone by name or number from the contract, such as "Milestone 2: design approval", so the client can tick it off. A subscription or membership request covers a future period of access; give the start and end dates. In each case the request is about money for something not yet delivered, so keep it on its own numbering series and convert it to an invoice in line with your accounting and tax rules.

Our deposit invoice guide covers when to use a formal deposit invoice instead of a request, which some customers' accounts teams require before they will pay anything.

Request for payment letter template

When an invoice is overdue, a short formal letter often works better than another casual email. A simple structure:

1. Subject line: "Request for payment: Invoice 2088, 4,200.00 GBP, due 30 September 2026."
2. Opening: "Our records show that invoice 2088, issued on 31 August 2026 for website development, remains unpaid."
3. The facts: amount, original due date, any part payments received and the balance outstanding.
4. The request: "Please arrange payment of the balance by 14 November 2026."
5. How to pay: bank details, payment link or other methods.
6. Next steps: on a second or final letter, mention interest and fees you are entitled to, and what you will do if payment is not received.
7. Sign-off and attachment: attach the invoice PDF and, if useful, a statement of account showing all open items.

Sample request for payment letter

Here is a complete first-stage letter you can adapt:

Dear Ms Clarke,

Re: Invoice 2088, website development, 4,200.00 GBP

Our records show that invoice 2088, issued on 31 August 2026 with payment due on 30 September 2026, has not yet been paid. A copy is attached for your convenience.

Please arrange payment of 4,200.00 GBP by 14 November 2026 by bank transfer to the account shown on the invoice, quoting 2088 as the reference. If you have already paid, please send the payment date and reference so we can match it, and accept our thanks.

If there is a problem with the invoice, please let us know by return so we can resolve it quickly.

Kind regards, Sam Jones, Jones Web Studio

Notice what the letter does: it states the facts, gives a specific date, offers a way out if payment was already made and invites the client to raise any dispute now rather than later. A second letter repeats the facts and adds the interest and recovery costs you are entitled to; a final letter states what you will do next and by when.

Keep the language factual and calm. If the debt ends up in court, the judge will read your letters. Our guide to overdue invoices maps out the full escalation path.

Worked example: a UK request for payment with statutory interest

A UK web developer issued invoice 2088 for 4,200.00 pounds to a business client, due on 30 September 2026. By 30 October 2026 it is 30 days late and the contract says nothing about late payment interest.

According to GOV.UK guidance on charging interest on commercial debt, statutory interest for business-to-business transactions is 8 percent plus the Bank of England base rate. As of autumn 2026 Bank Rate stands at 3.75 percent, so the statutory rate is 11.75 percent a year. GOV.UK also sets fixed debt recovery sums of 40 pounds for debts up to 999.99, 70 pounds for debts of 1,000 to 9,999.99, and 100 pounds for debts of 10,000 or more.

Item	Calculation	Amount
Unpaid invoice	Original total	4,200.00
Daily interest	4,200.00 x 11.75% / 365	1.35 per day
Interest for 30 days	4,200.00 x 11.75% x 30 / 365	40.56
Fixed recovery sum	Debt between 1,000 and 9,999.99	70.00
Total now claimed	4,200.00 + 40.56 + 70.00	4,310.56

Two details matter here. First, GOV.UK tells you to check the current and previous Bank of England base rates when you work out the figure, and follows the same method used here: annual interest divided by 365, multiplied by the days late. Do not rely on an old rate from a previous letter. Second, the fixed sum can only be claimed once per invoice, however many letters you send.

The letter states the balance, the interest accrued so far, the daily rate going forward and the recovery sum, and asks for payment by a new date. Interest keeps running until payment, so give the daily figure rather than a single frozen total. Our late payment fees guide covers how this compares with US late fee rules. This is general information, not legal advice.

How to send a payment request in 6 steps

1. Pick the right document. Before the work: payment request or deposit invoice. After the due date: request for payment letter referencing the invoice.
2. Number it correctly. Requests get their own series; letters quote the invoice number. Our invoice number generator helps you set up prefixes.
3. State exactly what the money is for. Reference the quote, contract or invoice.
4. Set a firm date. "By 14 November 2026" works better than "as soon as possible". Our article on invoice payment terms explains common options.
5. Make paying easy. Include every payment method you accept. Our sibling guide to the best payment methods for small business compares costs and speed.
6. Follow up on schedule. Diary the due date and send the next step the day after it passes.

Turning a paid request into the final invoice

Once the advance arrives, the paperwork needs to catch up. Issue the invoice when the work is done (or immediately, if your tax rules require an invoice when payment is received), list the full price, and enter the advance in the amount paid field so the balance due shows only what is left. For example, on a 6,000.00 project with a 2,400.00 deposit (40 percent), the final invoice shows a total of 6,000.00, amount paid 2,400.00 and balance due 3,600.00.

When the balance is settled, mark the invoice as paid. Our sibling guide to the paid invoice template shows exactly what to change.

When payment requests go wrong

• Calling a pre-payment request an invoice. This can double-count sales and, for VAT-registered businesses, mislead customers into reclaiming VAT on the wrong document.
• Using invoice numbers for requests. If a request is never paid, you are left with a gap or a cancelled invoice in your sequence.
• Vague amounts. "Balance of project" without a figure invites delay. Always state the exact amount.
• No reference. Without a quote or invoice number, the customer's accounts team may not be able to approve payment.
• Threats you cannot back up. Only mention interest, fees or action you are entitled to and willing to take.
• Waiting too long. The longer an invoice is overdue, the harder it is to collect. Follow a fixed timetable.
• Sending it to the wrong person. Your project contact may not be the person who pays. Ask early who handles supplier payments and copy them on every request.
• Ignoring the customer's process. Larger customers often need a purchase order number or supplier setup before they can pay anything, including a deposit. Ask what they need when you send the first request, not after it is overdue.

Payment request wording examples

Short, specific wording gets paid faster. A few examples you can adapt:

• Deposit: "Please pay a 40% deposit of 2,400.00 by 7 November 2026 to secure your project start date of 17 November. The balance will be invoiced on completion."
• Materials: "Payment of 850.00 is requested before we order the special-order tiles listed in quote Q-221. Ordered materials are non-refundable."
• First overdue request: "Invoice 2088 for 4,200.00 was due on 30 September. Could you let us know when payment will be made?"
• Final request: "Unless the balance of 4,310.56, including statutory interest and recovery costs, is received by 14 November, we will consider further action."

Whatever wording you choose, keep the amount, the reference and the date in the first two sentences. People skim payment emails on their phones, and anything below the fold may never be read.

Create your payment request template

A good payment request template is clear about what it is: an advance request that is not yet an invoice, or a formal request for payment that points to one. State the amount, the reason, the date and how to pay, keep separate numbering and convert paid requests into proper invoices. Build yours in the invoice generator, choose a clean layout such as the modern invoice template, and download a PDF ready to send.