Every Making Tax Digital obligation ultimately rests on one foundation: digital records. The quarterly updates are just totals computed from them. Yet "keep digital records" is the requirement people misunderstand most — some assume a photo of a receipt is enough, others fear they must buy enterprise accounting software. Both are wrong.
Here is what HMRC actually requires, where the compliance traps are, and the cheapest workflow that satisfies all of it.
The Core Requirement: Three Facts Per Transaction
For each business transaction you must hold, in a digital form your software can use:
- The date of the transaction;
- The amount;
- The category — which income or expense heading it belongs to.
That is the legal core. You do not have to store scanned receipts inside MTD software (though keeping receipts remains sensible evidence for expenses), and you do not need transaction narratives beyond what categorisation requires. But the three facts must exist digitally, for every transaction, kept up to date through the year — not reconstructed each January.
The Digital Links Rule — Where Everyone Trips
Once data exists digitally, every transfer of it must be a digital link: an import, a conversion, an API call, a linked formula. What is banned is manual re-entry:
- ❌ Reading a PDF bank statement and typing the lines into Excel — breaks the rule;
- ❌ Copy-pasting figures between applications as your transfer method — breaks the rule;
- ✅ Downloading a CSV from your bank and importing it — compliant;
- ✅ Converting a PDF statement with extraction software such as BankScan AI — compliant, because the data flows digitally from source to spreadsheet;
- ✅ Linked spreadsheet formulas carrying totals into bridging software — compliant.
The principle: the same figure should never be typed twice. This is why "I'll just key my statements in" is not a lawful MTD workflow, however accurate your typing.
Yes, Spreadsheets Are Allowed
HMRC's rules require functional compatible software — which can be a combination: a spreadsheet holding your records plus recognised bridging software making the submissions, joined by digital links. For a one-person business whose financial life runs through a bank account, the leanest compliant stack is:
- Source: your bank statement (PDF or CSV — both are digital records);
- Conversion: automated extraction into a categorised spreadsheet (seconds, digital link intact);
- Submission: HMRC-recognised bridging or MTD software reading those figures.
Paper statements can be digitised — scan to PDF, then extract digitally; see converting scanned statements. Once digitised faithfully, HMRC accepts the digital copy as the record.
Retention: How Long, and In What Form
Keep your digital records (including the original downloaded statements/CSVs, not just the processed output) for the statutory period — as a rule of thumb at least five years after the 31 January deadline for the year, and six years is the safe habit many accountants apply across the board. Records must remain accessible and legible for the whole period — a dead app with your data locked inside is a compliance failure, which is a good argument for keeping records in durable formats like CSV/XLSX. See our data security and GDPR guide for storage practice.
A Compliance Self-Test
- Could you produce date + amount + category, digitally, for every business transaction this quarter?
- Did any figure get manually retyped between your bank and your records?
- Are your records updated at least quarterly, not annually?
- Could you still open your 2026 records in 2032?
Anyone answering wrongly on 1 or 2 should fix the pipeline now — it is a ten-minute change of habit, and it is the difference between MTD as a non-event and MTD as a penalty generator.
Make Your Bank Statements MTD-Compliant in Seconds
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Try BankScan AI Free →Frequently Asked Questions
Are PDF bank statements digital records under MTD?
Yes — a PDF from your bank is a digital record. The trap is the next step: manually typing its contents into a spreadsheet breaks the digital-link rule. Extract the data with software instead, so it flows digitally from PDF to spreadsheet.
Do I have to keep paper receipts once digitised?
Once a paper document is digitised faithfully and completely, HMRC accepts the digital copy and the paper can be destroyed. Many people keep originals anyway as belt-and-braces, but it is not required if the digital copy is a true representation and stays accessible for the retention period.
Is a photo of a receipt a digital record?
An image alone is not enough — MTD records are data (date, amount, category), not pictures. The image is useful evidence, but the transaction details must exist in a form software can process, reached by digital means rather than retyping.
Can I do MTD entirely with Excel?
Almost — a spreadsheet can hold your records, but submission requires HMRC-recognised (bridging) software connected by digital links. Spreadsheet + bridging is an explicitly sanctioned, low-cost route, provided the spreadsheet itself is populated digitally.
What happens if HMRC finds my records were typed in manually?
Failing to keep records in the required digital form can attract record-keeping penalties, and it undermines your position in any enquiry because the audit trail from source to submission is broken. Since automated conversion is faster than typing anyway, there is no upside to the non-compliant route.
Last updated: 8 July 2026. This guide explains the Making Tax Digital rules as published by HMRC — always check GOV.UK for the latest official guidance. Read our MTD bank statement compliance guide or browse all blog posts.