Making Tax Digital: Complete Guide for UK Small Businesses

The Days of Paper Tax Returns Are Over

Making Tax Digital is HMRC’s programme to digitise the UK tax system. The idea is straightforward: businesses keep digital records, use compatible software, and submit tax information to HMRC through digital channels. No more spreadsheets posted to the tax office. No more manual data entry into HMRC’s online portal.

MTD for VAT has been mandatory since April 2022. MTD for Income Tax Self Assessment starts in April 2026. If you run a small business in the UK, this affects you — and the window to prepare is closing fast.

MTD for VAT: Already in Force

Since 1 April 2022, every VAT-registered business must keep digital records and file VAT returns using MTD-compatible software. This applies regardless of turnover. If you’re VAT-registered, you’re in scope.

What this means in practice:

• Digital records: You must maintain a digital record of all sales and purchases, the VAT rate applied, the time of supply, and the value of the supply. These records must be kept in software — not in paper ledgers
• Digital filing: VAT returns must be submitted directly from your software to HMRC via their API. You cannot manually type figures into the HMRC website
• Digital links: If you use more than one piece of software (for example, a point-of-sale system and an accounting package), the data must flow between them digitally. Copy-and-paste between spreadsheets does not count as a digital link

The standard VAT rates in the UK are 20% (standard), 5% (reduced), and 0% (zero-rated). Your software must correctly categorise transactions and calculate VAT at the right rate. Getting this wrong doesn’t just create compliance risk — it means you either overpay HMRC or face penalties for underpayment.

MTD for Income Tax: Coming April 2026

This is the big change. From 6 April 2026, self-employed individuals and landlords with qualifying income above £50,000 must comply with MTD for Income Tax Self Assessment (ITSA). Those with income above £30,000 will follow from April 2027.

Under MTD for ITSA, you must:

• Keep digital records of all business income and expenses using MTD-compatible software
• Submit quarterly updates to HMRC — not annual returns, but four updates per year summarising your income and expenditure
• Submit an End of Period Statement (EOPS) confirming your figures are correct
• Submit a Final Declaration replacing the current Self Assessment tax return

This is a fundamental shift. Instead of filing once a year (often months after the tax year ends), HMRC wants near-real-time visibility of your income. The quarterly cadence means you need your books in order throughout the year, not just at year-end.

The legal basis for this sits in the Finance Act 2022, which granted HMRC the powers to mandate digital record-keeping and quarterly reporting for income tax purposes.

What “Digital Records” Actually Means

HMRC is specific about what counts as a digital record. A spreadsheet on its own is not MTD-compatible, even if it’s digital in the colloquial sense. The software you use must be able to:

1. Record transactions digitally as they occur
2. Preserve records in a digital format that can’t be easily altered
3. Calculate VAT or tax based on those records
4. Submit returns directly to HMRC via their Application Programming Interface (API)
5. Receive information back from HMRC (acknowledgements, obligation periods)

If you currently use Excel to track income and expenses and then manually enter figures on GOV.UK, that workflow is not compliant. You need software that connects directly to HMRC’s systems.

The Digital Links Requirement

This catches more businesses than you might expect. If any part of your record-keeping involves transferring data between systems, that transfer must be digital. HMRC’s guidance (VAT Notice 700/22) is clear: manually re-keying figures or using copy-and-paste breaks the digital link.

Common scenarios where this matters:

• Point of sale to accounting software: Daily sales totals must flow automatically, not be re-typed
• Bank feeds to bookkeeping: Transactions should import digitally, not be entered from paper statements
• Payroll to accounts: PAYE, National Insurance Contributions (NIC), and pension data must transfer digitally into your accounting records

The intent is an unbroken digital chain from the original transaction all the way to the HMRC submission.

The New Points-Based Penalty Regime

HMRC replaced the old penalty system with a points-based regime from January 2023 for VAT (and it will extend to income tax under MTD for ITSA). Here’s how it works:

• Each time you submit a return late, you receive one penalty point
• Once you reach the penalty threshold, you receive a £200 penalty for that late submission and every subsequent one
• The threshold depends on your filing frequency: 4 points for quarterly filers, 5 points for monthly filers, 2 points for annual filers
• Points expire after a period of compliance (typically 24 months of on-time submissions), but only if you’ve submitted all outstanding returns

For late payment, the penalties are financial from the start:

• Up to 15 days late: no penalty (but interest accrues from the due date)
• 16 to 30 days late: 2% of the tax owed at day 15
• 31+ days late: 2% of the tax owed at day 15, plus 2% of the tax owed at day 30, plus a daily rate of 4% per annum on the outstanding balance

This is tougher than the old regime. The points system means that even if each individual late submission seems minor, they accumulate. And the late payment penalties start biting much sooner than before.

Corporation Tax, PAYE, and What’s Next

MTD does not yet cover Corporation Tax or PAYE, but HMRC has signalled its intention to bring all taxes within the MTD framework over time. For now:

• Corporation Tax: Filed via the Company Tax Return (CT600) to HMRC, with accounts prepared under FRS 102 (or FRS 105 for micro-entities) and filed at Companies House. No MTD mandate yet, but digital filing is already standard practice
• PAYE: Employers already submit payroll data in real time via Real Time Information (RTI). Every time you pay an employee, you submit a Full Payment Submission (FPS) to HMRC. This is effectively digital-by-default already
• National Insurance: Reported alongside PAYE via RTI. Employer’s NIC (Class 1) is calculated per pay period

Even though these aren’t formally part of MTD yet, the direction is clear. Any business still relying on manual processes or disconnected systems should be planning its transition now.

How Odiverse Helps UK Businesses Stay Compliant

Odiverse is built for exactly this shift. Rather than bolting MTD compatibility onto legacy software, the entire platform is designed around digital-first record-keeping and automated compliance.

MTD-compatible VAT filing: Odiverse calculates VAT at the correct rate (20%, 5%, 0%) for every transaction and generates returns ready for digital submission to HMRC. No manual re-keying, no broken digital links.

FRS 102 chart of accounts: UK companies get a chart of accounts aligned to FRS 102 out of the box — 207 accounts covering assets, liabilities, equity, income, and expenses in the format Companies House and HMRC expect.

Digital records by default: Every invoice, payment, and journal entry is recorded digitally from the moment it’s created. The audit trail is immutable — you can’t accidentally delete a transaction. This is precisely what HMRC means by “digital records.”

Quarterly reporting ready: With your books maintained in real time, generating the quarterly updates required under MTD for ITSA is a matter of clicking a button, not a quarterly scramble through shoe boxes of receipts.

AI that understands UK tax: Odi, the AI assistant built into Odiverse, understands UK VAT rules, NIC calculations, and filing deadlines. Ask it when your next VAT return is due or what rate applies to a specific supply, and it gives you a straight answer — in plain English, not jargon.

What You Should Do Now

If you’re a VAT-registered business, you should already be filing via MTD-compatible software. If you’re not, you’re already non-compliant and accumulating penalty points.

If you’re self-employed or a landlord with income above £50,000, April 2026 is weeks away. You need MTD-compatible software in place before the start of the new tax year.

Here’s a practical checklist:

• Audit your current setup: Are your records genuinely digital? Do they meet HMRC’s definition?
• Check your digital links: Is there any point where data is manually re-keyed between systems?
• Choose MTD-compatible software: Verify it’s on HMRC’s list of recognised software at GOV.UK
• Set up quarterly reporting: Don’t wait until the first deadline. Start now so you catch any issues early
• Talk to your accountant: Make sure they can receive data from your software digitally

MTD is not optional and it’s not going away. But with the right tools, compliance becomes a byproduct of running your business properly — not an additional burden on top of it.

Get started with Odiverse and make tax digital the easy way.