Client Deposits Accounting for UK Tradespeople

A client deposit is usually income you have received for a specific job, not a pot of money you hold for the customer. For a sole trader plumber, electrician or builder, that means recording it against the job, working out the VAT position on the day, and deducting it on the final invoice so the customer never pays twice and you never report it twice.

This guide walks through the treatment step by step: what HMRC says about deposits, how your accounting method changes the answer, a workable process for each job, and what to do when a customer cancels.

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TL;DR

A deposit that will be credited against the final price is normally payment for the job, not a refundable holding amount. Record it straight away against the customer and job.
If you are VAT-registered, the tax point for a deposit is generally the earlier of issuing a VAT invoice or receiving the money, so VAT can be due before the job starts.
Under cash basis you count the deposit as income when it lands. Under traditional accounting you count income when you invoice or earn it. Pick one method and apply it consistently.
For consumer work, keep non-refundable deposits small and tied to real costs, and put the terms in writing before you take a penny.
Capture deposits digitally with a job reference. Making Tax Digital for Income Tax makes year-end reconstruction from texts and bank statements a poor option.

What counts as a deposit, and why the label does not decide anything
Deposits and VAT: the tax point comes early
Cash basis or traditional accounting: when the deposit becomes income
A deposit process that works on site
CIS and deposits
Deposits from consumers: keep them reasonable
Deposits and Making Tax Digital
Our view on deposits
Recording deposits in TradeTally
FAQ
Sources

What counts as a deposit, and why the label does not decide anything

Tradespeople use “deposit” for three different things:

An advance payment toward the job. Money for materials or to secure your diary slot, credited against the final invoice.
A staged or stage payment. A percentage on start, another at first fix, the rest on completion.
A genuinely refundable security deposit. For example, money held only to make sure hired equipment comes back.

HMRC looks at substance, not the word on your invoice. Its manual on deposits and hotel booking charges describes a deposit as any payment received in advance of a supply. What matters is whether the money is ultimately consideration for an identifiable supply, or genuinely held as refundable security.

For most trade work, the answer is the first. If the £500 is going to be knocked off the final bill for a boiler replacement, it is part of the price. HMRC’s guidance on instalments and deposits treats it as an advance payment, so you record the customer, job, amount, VAT treatment and invoice link immediately. A refundable security deposit is different: VAT generally does not apply while it remains security and is refundable, though the facts of each case decide it (see VAT Notice 700).

Pro tip: Do not call something a “holding deposit” or “security” on your paperwork to avoid VAT. If it is credited against the job, the label will not protect you.

Deposits and VAT: the tax point comes early

If you are not VAT-registered, skip to the next section. If you are, the key idea is the tax point, the date the supply is treated as happening for VAT.

For an advance payment that forms part of the price of an identifiable supply, the tax point is the earlier of issuing a VAT invoice for the deposit or receiving the money. The VAT goes on the return for that period, even if the work does not start for weeks.

The balance then creates a further tax point when you invoice it or get paid, whichever is first.

A worked example

An electrician charges £3,000 plus VAT at 20% to rewire a house. The customer pays a £600 deposit up front.

Item	Net	VAT at 20%	Gross
Total job	£3,000.00	£600.00	£3,600.00
Deposit received	£500.00	£100.00	£600.00
Balance on completion	£2,500.00	£500.00	£3,000.00

The £100 of VAT on the deposit belongs on the return for the period in which you took the money or invoiced it. The final invoice shows the full job, then the deposit deducted, leaving £3,000.00 to pay. The VAT already accounted for is not charged twice.

If the customer cancels

If you keep the deposit after the customer cancels, VAT remains due on the retained amount. If you refund it, the VAT you previously accounted for may be adjusted to reflect the reduced consideration. Because the detail depends on the facts, ask your accountant before you adjust a return.

VAT Cash Accounting

If you use the VAT Cash Accounting Scheme, you account for output VAT based on payments received rather than invoices issued. HMRC requires each payment to be cross-referenced to the corresponding sales invoice, alongside normal commercial evidence such as bank statements. A bank-feed line saying “J Smith” is not enough. Give every job a unique reference and quote it on the deposit request, the final invoice and, if you can, the payment.

Cash basis or traditional accounting: when the deposit becomes income

For Self Assessment, HMRC distinguishes cash basis from traditional accounting. Your choice decides how deposits and outstanding balances appear in your taxable profits.

	Cash basis	Traditional accounting
Income counted	When the customer actually pays	When you invoice or earn it
Deposit	Income in the period it is received	Normally income when invoiced or earned, with care over work not yet done
Expenses	Only when actually paid	When incurred
Best suited to	Straightforward jobs, quick payers	Larger jobs, long payment gaps, stock

From the 2024-25 tax year, cash basis is the default for eligible businesses unless you opt out or are excluded. Under it, all payments received count, including cash, card and cheque.

The timing trap

Cash basis is deliberately simple: tax follows the money. But it makes payment matching important when several deposits and part-payments land close to the year end. A big deposit received on 3 April belongs to the previous tax year. The same money received on 7 April belongs to the next one. If you take deposits for work starting after 5 April, you could face a larger bill than the work you have actually done suggests.

If you are weighing the two methods, our guide to cash basis accounting for UK trades covers the year-end effects in more detail. If you want a view on the likely bill, the Self Assessment tax calculator for sole traders gives a quick estimate.

Pro tip: Whatever method you use, keep records of all sales, takings, purchases and expenses. HMRC expects this regardless of method.

A deposit process that works on site

This is the sequence we would follow for a plumbing, electrical or building job. It is the same whether you record it in a spreadsheet or an app.

Quote with written terms. State the price, the deposit amount, what it covers, when the balance is due and what happens on cancellation. Put an expiry date on the quote.
Issue a deposit invoice or payment request. Include the job reference. If you are VAT-registered, show the net amount, VAT and total.
Record the receipt against the job. Note the date it arrived, how it was paid and the reference. Do this the same day, while you remember which job it was.
Separate net and VAT where applicable. The VAT is not yours to spend.
Issue the final invoice showing the deposit deducted. List the full job value, the deposit already paid, and the balance due.
Reconcile. Match the bank payment to the invoice and mark the job as paid.

Our article on four steps to avoid VAT and CIS errors on deposit invoices goes further on the paperwork, and when tradesmen should invoice customers helps you decide on the timing of each request.

Getting paid cleanly

Most deposit disputes begin with unclear payment details. Give the customer your account details on the invoice itself, and use a payment reference that matches the job. Bank-based payments tend to be easier to reconcile than cash, because the date and reference are already on the statement. Open banking style options such as pay by bank services now launching in the UK are worth watching if you want customers to pay straight from their own bank account without card details.

If you are paid in cash, issue a receipt and bank it promptly. Cash counts as income under cash basis just as much as a transfer does.

CIS and deposits

If you work as a subcontractor under the Construction Industry Scheme, deductions can complicate deposit invoices, because the contractor may deduct tax from the payment. Record the gross value, the deduction and the net received separately, and keep the statements the contractor gives you. Domestic customers are not under CIS, so this applies to contractor work only. Our deposit invoice guide shows where the errors usually creep in.

Deposits from consumers: keep them reasonable

When your customer is a homeowner, consumer rules apply as well as tax. UK government guidance for consumers says a business can generally retain only enough to cover direct losses caused by the cancellation, and must take reasonable steps to reduce those losses.

In practice:

Non-refundable deposits should normally be a small percentage of the total price.
Larger advance payments should reflect real costs, such as ordered materials, and leave a reasonable amount due on completion.
If a customer cancels and it is not your fault, you can keep what covers your actual costs, not a penalty.

The government’s cancellation charges guidance for businesses makes the same point: deposits reserve your services, and advance payments help cover actual costs during a contract.

The 14-day cancellation period

A 14-day cancellation period can apply when a consumer agrees work by phone, internet, post or away from your premises. Exceptions include urgent repairs and some made-to-measure goods, and the exact facts and contract matter. If you take a deposit on a kitchen fit agreed at the customer’s home, check this before ordering materials. For specific cases, take advice from Citizens Advice or Trading Standards, or a solicitor.

Pro tip: Keep a record of what you ordered and when. If a customer cancels, a list of supplier receipts is the best evidence of your direct losses.

Deposits and Making Tax Digital

From 6 April 2026, in-scope sole traders must use compatible software to keep digital records and send HMRC quarterly updates. These are not extra tax returns. The first quarterly update for 2026-27 covered the first three months of the tax year.

The thresholds are phased: qualifying income over £50,000 from April 2026, over £30,000 from April 2027 and over £20,000 from April 2028, as set out in HMRC’s one-year-to-go announcement. The test uses gross qualifying income before allowances or expenses, so deposits and other customer receipts must be classified consistently.

HMRC’s software guidance says the software needs to create, store and correct digital records of your income and expenses. Dates, categories and links to source documents matter, so that quarterly summaries can be checked rather than recreated from texts, paper receipts and bank statements. A deposit logged on the day, with a job reference and the invoice attached, fits that. A deposit remembered in October does not.

For more, see our MTD for ITSA setup guide and the six steps to be ready for MTD. Keep your paperwork in line with our Self Assessment records checklist too.

Deposits and Making Tax Digital — overview diagram

Our view on deposits

We built TradeTally around the admin that follows a day on site, and deposits are where that admin most often goes wrong. The money arrives in the van, on a Friday, by bank transfer with a vague reference. Three weeks later the final invoice goes out for the full amount, and the customer, fairly, asks about the deposit.

Our view on deposits — overview diagram

Our advice is simple. Treat the deposit as part of the job from the first minute, not as a separate event. One job, one reference, one running record of what has been quoted, what has been paid and what is outstanding. If those three numbers are visible on your phone, most deposit mistakes cannot happen: double-charging, forgetting to account for VAT, or reporting the same receipt twice.

And be cautious about the legal side. Write your terms down before the customer pays, keep non-refundable amounts modest, and tell the customer what the deposit covers. A disagreement over a £300 deposit is much easier to settle when both sides have the same email.

— Simon

Recording deposits in TradeTally

TradeTally is a UK app for sole traders. You can create branded quotes and invoices, snap receipts, keep records ready for Self Assessment with SA103F export, and handle CIS deductions, all from your phone. There is a free Starter plan at £0 per month, and Professional costs £12 per month or £120 per year for unlimited invoices, receipts and tax exports. You can see the options on our pricing page, or look at our MTD software for sole traders.

FAQ

Is a customer deposit income or a liability?

If it will be credited against the final price of a specific job, HMRC generally treats it as payment for that job, not as something you can ignore. When it counts as taxable income depends on your method: when received under cash basis, or when invoiced or earned under traditional accounting. A genuinely refundable security deposit is treated differently, so check your facts with an accountant.

Do I charge VAT on a deposit?

If you are VAT-registered and the deposit is part of the price of an identifiable supply, yes. The tax point is generally the earlier of issuing a VAT invoice or receiving the payment. VAT on a genuinely refundable security deposit generally does not apply while it stays refundable.

What happens to the VAT if the customer cancels?

If you keep the deposit, VAT remains due on the amount retained. If you refund it, the VAT you accounted for may be adjusted to reflect the reduced payment. Speak to your accountant before changing a return.

How big can a non-refundable deposit be?

For consumer jobs, government guidance says non-refundable deposits should normally be a small percentage of the total price. Larger advance payments should match real costs and leave a reasonable amount due on completion. You can generally keep only enough to cover your direct losses.

Do deposits count toward the MTD income threshold?

The threshold is based on gross qualifying income before allowances or expenses, so customer receipts, including deposits, need consistent classification. The threshold is over £50,000 from April 2026, over £30,000 from April 2027 and over £20,000 from April 2028.