What Is Making Tax Digital and How Does It Affect My Business?

Making Tax Digital (MTD) is HMRC's flagship programme to modernise the UK tax system. It requires businesses, self-employed individuals, and landlords to keep digital records and file tax returns using compatible software — replacing paper records and manual submissions.

If you run a business in the UK, MTD is not optional. It is already live for VAT, and income tax self-assessment (ITSA) is next. Understanding what MTD requires, who it affects, and when key deadlines fall is essential to staying compliant and avoiding penalties.

What Exactly Is Making Tax Digital?

At its core, MTD has three requirements:

1. Digital record-keeping — you must maintain your business records using MTD-compatible software, not spreadsheets or paper ledgers (unless the software can digitally link to HMRC)
2. Quarterly updates — instead of filing one annual return, businesses will submit summary updates to HMRC every quarter
3. Software submission — all filings must go through HMRC-recognised software that connects to their systems via API

The goal is to reduce errors in tax returns (HMRC estimates the tax gap caused by errors and carelessness costs over £10 billion annually), improve real-time visibility of tax positions, and make the system easier for taxpayers in the long term.

MTD for VAT: Already Live

MTD for VAT has been mandatory since April 2022 for all VAT-registered businesses, regardless of turnover. Key requirements:

• All VAT-registered businesses must use MTD-compatible software to keep VAT records and submit VAT returns
• Digital links are required between all parts of your accounting system — no manual re-typing of figures between software
• You must submit your VAT return through software (not via the HMRC online portal)

If you are already VAT-registered and using software like Xero, QuickBooks, or FreeAgent to submit your VAT returns, you are likely already compliant.

What Counts as MTD-Compatible Software?

HMRC maintains a list of recognised software providers. To be compliant, your software must:

• Maintain digital records of all VAT transactions
• Submit VAT returns directly to HMRC through their API
• Receive information from HMRC (such as VAT obligations and confirmation of submission)

Spreadsheets alone are not compliant unless they are bridged to HMRC's systems through compatible bridging software.

MTD for Income Tax Self-Assessment (ITSA): Coming April 2026

This is the big change that will affect millions of UK taxpayers. MTD for ITSA will require self-employed individuals and landlords to:

• Keep digital records of income and expenses
• Submit quarterly updates to HMRC (replacing the single annual self-assessment return)
• Submit an End of Period Statement (EOPS) after the tax year
• Submit a Final Declaration (replacing the current self-assessment tax return)

Who Is Affected and When?

The rollout is phased based on gross income:

Phase	Start Date	Who Is Affected
Phase 1	April 2026	Self-employed and landlords with gross income over £50,000
Phase 2	April 2027	Self-employed and landlords with gross income over £30,000
Phase 3	To be confirmed	Those with income over £20,000 (under review)

Important: These thresholds are based on gross income (total turnover), not profit. If your business turns over more than £50,000 but makes very little profit, you are still caught by Phase 1.

Quarterly Submission Deadlines

Under MTD for ITSA, you will need to submit updates for each quarter:

Quarter	Period	Deadline
Q1	6 April – 5 July	7 August
Q2	6 July – 5 October	7 November
Q3	6 October – 5 January	7 February
Q4	6 January – 5 April	7 May

The End of Period Statement is due by 31 January following the tax year, and the Final Declaration by 31 January of the following year (the same deadline as the current self-assessment return).

Penalties Under MTD

HMRC has introduced a new points-based penalty system for late submissions under MTD:

• Each late submission earns one penalty point
• Once you reach the penalty threshold (typically 4 points for quarterly submissions), you receive a £200 penalty
• Every subsequent late submission also triggers a £200 penalty
• Points expire after a period of compliance (24 months for quarterly obligations)

For late payments, HMRC charges:

• Late payment interest from day one
• A first penalty of 2% on tax outstanding after 15 days, rising to a further 2% after 30 days
• An additional daily penalty of 4% per annum on tax outstanding after 30 days

How to Prepare for MTD

Whether you are already affected (VAT) or preparing for ITSA, here are the steps to take:

1. Choose MTD-compatible software. If you are not already using accounting software, now is the time to start. Options range from simple bridging software (for those who want to keep using spreadsheets) to full cloud accounting platforms.

2. Digitise your records. If you are still using paper receipts and manual ledgers, begin moving to digital record-keeping. Photograph receipts, use bank feeds, and categorise transactions in your software.

3. Understand your deadlines. Know which phase you fall into and mark the quarterly submission dates in your calendar.

4. Review your current processes. Identify any manual steps in your accounting workflow — such as re-typing figures between systems — that need to be replaced with digital links.

5. Talk to your accountant. If you use an accountant or bookkeeper, discuss how MTD will change your working relationship. Many accountants are shifting to quarterly reviews rather than annual catch-ups.

What If I Am Already Using Software?

If you are already using cloud accounting software (Xero, QuickBooks, FreeAgent, Sage, etc.) and it is connected to HMRC, you may already be largely compliant. Check with your software provider to confirm that:

• Your plan includes MTD features
• Digital links are properly configured
• You are set up for the correct MTD obligations

How TaxDocs Fits In

While TaxDocs is not accounting software, it complements your MTD-compatible tools by handling the document generation and preparation side of tax compliance. Upload your financial data, and TaxDocs generates professionally formatted, jurisdiction-specific tax documents — the supporting computations, schedules, and reports that sit alongside your MTD submissions.

For businesses that need to prepare corporation tax computations, capital allowance schedules, or multi-country tax documents, TaxDocs automates the heavy lifting so you can focus on running your business.

Key Takeaways

• MTD for VAT is already mandatory for all VAT-registered businesses
• MTD for Income Tax starts April 2026 for those earning over £50,000
• You must use MTD-compatible software — spreadsheets alone are not sufficient
• Quarterly updates replace the single annual tax return
• The new points-based penalty system penalises repeated late submissions
• Start preparing now — switching to digital records takes time

This article is for informational purposes only and does not constitute tax advice.