Receipt capture apps in a bookkeeping practice

Q: Which controls stop errors reaching the VAT return?

No auto publishing for new suppliers. Allow automatic publishing only for known suppliers with stable VAT treatment, and review the rest. Duplicate checks. Turn on the app's duplicate warning and make the invoice number a required field, so the same supplier, number and amount are flagged. Match, never create. Train staff to match bank lines to published bills, and reconcile the unpaid bills list each month to find items paid but not matched. Supplier defaults. Set the default nominal code and VAT rate per supplier, and review any draft where the app's VAT differs from the default. Small cash items. HMRC allows petty cash purchases each under £50 including VAT to be recorded as a single entry, up to £500 including VAT per entry. The app does not have to be used for every bus ticket. Pre return review. Before each VAT return, list the largest input tax claims and any supplier with two bills of the same amount in the period. A three way match helps where the client raises purchase orders.

Q: What should a practice check before adopting an app?

Data protection. The app will process client data on the practice's instructions, so it is a sub processor. Under Article 28(2) of the UK GDPR, a processor must not engage another processor without the controller's prior written authorisation, so client engagement letters should cover it. Retention and exit. VAT records must normally be kept for at least 6 years. Sole traders and landlords must keep records for at least 5 years after the 31 January filing deadline. Check that images can be exported in bulk if the subscription ends. Ledger integration. Under VAT Notice 700/21, transfers of data that form part of the electronic account must be by digital link, and copy and paste does not count. An app that publishes through an integration meets this; one that needs figures retyped does not.

Receipt capture apps turn a photo, scan or emailed PDF into a draft bill or expense, reading the supplier, date, amounts and VAT so the bookkeeper reviews rather than types. They save time only if every draft passes through a review step, is matched to the bank line rather than posted as a second transaction, and is checked for duplicates before the VAT return.

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Where does a capture app fit in the bookkeeping workflow?

In most practices the flow is the same whichever product is used:

Capture. The client photographs a receipt, forwards an emailed invoice to a dedicated address, or the supplier sends invoices there directly.
Extraction. The app reads the document and proposes supplier, date, invoice number, net, VAT and gross amounts, and often a nominal code and VAT rate based on past postings for that supplier.
Review. A bookkeeper checks each draft in a queue and corrects it.
Publish. The approved item is sent to the ledger as a bill, a paid expense or a card transaction, with the image attached.
Match. When the payment comes through the bank feed, it is matched to the published bill.

Errors come from skipping step 3 or getting step 5 wrong. Auto publishing straight to the ledger is where most bad VAT claims start.

What does the app extract, and what does the law need?

For VAT, VAT Notice 700/21 says the digital record of each supply received must show the time of supply, the value of the supply and the amount of input tax claimed. Inputs do not have to be split by VAT rate in the digital records. For Making Tax Digital for Income Tax, HMRC’s guidance says each digital record needs the amount, the date and a category. A capture app that reads those fields reliably meets the digital record requirement.

Holding a digital record is not the same as holding evidence for the input tax claim. A full VAT invoice must show, among other things, a unique sequential number, the time of supply, the supplier’s name, address and VAT registration number, the customer’s name and address, a description, and the VAT rate and amount. Where a supply is £250 or less including VAT, a simplified invoice is allowed, showing the supplier’s details and VAT number, the time of supply, a description, and for each rate the total payable including VAT and the rate charged. An app can read a VAT figure from a till receipt with no VAT number on it; the reviewer has to notice that it is not a valid VAT invoice.

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Can the image replace the paper receipt?

VAT Notice 700/21 gives two contrasting examples. Where a business types selected data from an invoice into its software, it must keep the original invoice, because the data is not a copy of the invoice. Where software scans invoices and puts the information in the ledger, and the image is retained and contains all the detail required for VAT purposes, the original need not be kept unless it is needed for another purpose. Some documents, such as a C79 import VAT certificate, must be kept in their original form.

So the image must be legible, complete and stored, not just the extracted figures. For Income Tax, HMRC says original records or supporting documents, or copies of them, must still be kept alongside the digital records. The detailed rules on acceptable images are in photos of receipts and HMRC.

How do duplicate postings happen?

The same receipt is photographed twice, or a client photographs a paper copy of an invoice the supplier also emailed.
A bill is published from the app and the bookkeeper also creates a new spend transaction from the bank feed instead of matching it.
Individual invoices are captured and the supplier’s monthly statement is also posted. HMRC itself notes that recording individual supplies lowers the risk of invoices being missed or entered twice, once as an invoice and once as part of the statement. If totals are taken from statements instead, HMRC requires all supplies on the statement to fall in one VAT period, the VAT at each rate to be shown, and each supply to be cross referenced to invoices received.
A card statement or expense claim is posted in total while its receipts are also captured individually.

Which controls stop errors reaching the VAT return?

No auto publishing for new suppliers. Allow automatic publishing only for known suppliers with stable VAT treatment, and review the rest.
Duplicate checks. Turn on the app’s duplicate warning and make the invoice number a required field, so the same supplier, number and amount are flagged.
Match, never create. Train staff to match bank lines to published bills, and reconcile the unpaid bills list each month to find items paid but not matched.
Supplier defaults. Set the default nominal code and VAT rate per supplier, and review any draft where the app’s VAT differs from the default.
Small cash items. HMRC allows petty cash purchases each under £50 including VAT to be recorded as a single entry, up to £500 including VAT per entry. The app does not have to be used for every bus ticket.
Pre return review. Before each VAT return, list the largest input tax claims and any supplier with two bills of the same amount in the period. A three way match helps where the client raises purchase orders.

What if a duplicate has already been claimed?

Under VAT Notice 700/45, errors on past returns can be corrected on the current return (method 1) where the net value does not exceed £10,000, or is between £10,000 and £50,000 but does not exceed 1% of the box 6 figure for the return in which the error is found. Above that, at over £50,000, or if the error was deliberate, method 2 applies, which means notifying HMRC separately. A careless error corrected under method 1 should still be disclosed separately in writing to get the maximum penalty reduction. The time limit is four years, and an input tax claim missed because the invoice was not held can be made in a later period within that limit. See correcting VAT errors.

What should a practice check before adopting an app?

Data protection. The app will process client data on the practice’s instructions, so it is a sub processor. Under Article 28(2) of the UK GDPR, a processor must not engage another processor without the controller’s prior written authorisation, so client engagement letters should cover it.
Retention and exit. VAT records must normally be kept for at least 6 years. Sole traders and landlords must keep records for at least 5 years after the 31 January filing deadline. Check that images can be exported in bulk if the subscription ends.
Ledger integration. Under VAT Notice 700/21, transfers of data that form part of the electronic account must be by digital link, and copy and paste does not count. An app that publishes through an integration meets this; one that needs figures retyped does not.

What does a duplicate look like in practice?

Illustration only. A VAT registered client sends 120 receipts a month. In March a £600 invoice including £100 VAT for equipment hire is emailed by the supplier and also photographed by the site manager. Both drafts are published, and when the payment clears the bookkeeper matches one bill and creates a new expense for the other. The quarter’s return overclaims £100 of input tax and overstates costs by £500.

The error shows up at the next quarter’s review because the supplier has two bills with the same number and only one has been paid. The net error is well under £10,000, so it is corrected on the next return, with a separate disclosure if the practice judges the error careless. The fix in the workflow is to make the invoice number required and turn on duplicate warnings for that client.

What mistakes come up most often?

Letting the app publish automatically for every supplier from day one.
Claiming input tax on receipts that do not show a VAT number.
Posting supplier statements and individual invoices for the same supplier.
Deleting originals where only extracted data, not a full image, has been kept.
Charging a flat fee without allowing for the review time capture creates. See pricing bookkeeping services.

Solar Protect runs fee protection schemes for accountancy and bookkeeping practices. See how our accountant schemes work or read fee protection schemes for accountants.

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Sources

Reviewed by Christine Anderson, Broker, Solar Protect. Last reviewed 24 October 2026. Part of Accountapedia, the Solar Protect guide to UK tax and accounting. This page is general information, not personalised advice.