Making Tax Digital 2025: What Every UK Small Business and Ecommerce Seller Needs to Know

Making Tax Digital (MTD) is HMRC's programme to move the UK tax system to fully digital record-keeping and filing. It's been rolling out in phases since 2019 — and if you're a UK business owner, ecommerce seller, or self-employed, you need to understand what applies to you now and what's coming next.

This guide cuts through the jargon and gives you the practical information you need to stay compliant in 2025.

What Is Making Tax Digital?

MTD requires businesses and individuals to keep digital records of their income and expenses, and submit tax returns to HMRC using MTD-compatible software. The key word is compatible software — you can no longer manually enter figures into the old HMRC portal in many circumstances.

MTD is being rolled out in three phases:

• MTD for VAT — mandatory since April 2022 for all VAT-registered businesses
• MTD for Income Tax Self-Assessment (ITSA) — mandatory from April 2026 for sole traders and landlords with income over £50,000
• MTD for Corporation Tax — consultation ongoing, expected post-2026

MTD for VAT — What You Need to Do Now

If you're VAT-registered, MTD for VAT is already mandatory. You must:

• Keep digital records of all VAT transactions (sales and purchases)
• Use MTD-compatible software to submit your VAT returns to HMRC
• Maintain a digital audit trail — no manual transcription of figures between systems

Compatible software includes: Xero, QuickBooks, Sage, FreeAgent, and various other approved platforms. Spreadsheets alone are not compliant unless they're connected to approved bridging software.

For ecommerce sellers specifically: Your sales data from Amazon, Shopify, or other platforms must flow digitally into your accounting software. Tools like A2X and Link My Books are the standard way to achieve this — they pull transaction data directly from your sales channels and post it to Xero or QuickBooks with the correct VAT treatment. Manual entry of Amazon or Shopify settlement totals is not MTD compliant.

MTD for Income Tax — What's Coming in 2026

From April 2026, sole traders and landlords with income over £50,000 will be required to use MTD for Income Tax Self-Assessment. This represents a significant change from the annual self-assessment return to quarterly digital submissions.

What MTD ITSA Means in Practice

• You'll submit four quarterly updates to HMRC showing your income and expenses
• Plus a final declaration at the end of the tax year (replacing the current self-assessment return)
• All records must be kept digitally from the start of each quarter
• This applies to self-employment income and property income separately

Who Does This Affect?

• April 2026: Sole traders and landlords with combined income over £50,000
• April 2027: Those with income over £30,000
• Later dates: Those below £30,000 — announcement pending

If you're a director of a limited company, this applies to any self-employment or property income you have personally — not to your company's corporation tax (which has its own separate MTD timeline).

MTD Penalties — Why This Matters

HMRC has moved to a points-based penalty system for VAT. Each late or non-compliant submission earns points, and once you accumulate enough points, you face financial penalties:

• 1–3 points: No financial penalty (but points accumulate)
• 4+ points: £200 penalty per late submission
• Points reset to zero if you file on time for 24 consecutive months

For deliberate non-compliance with MTD record-keeping requirements, HMRC can charge up to £3,000 per tax year.

How to Get Compliant — Practical Steps

Here's the practical action list depending on your situation:

If You're VAT-Registered

1. Confirm you're using MTD-compatible software (Xero, QuickBooks, Sage etc.)
2. If you're an ecommerce seller, confirm your sales data flows digitally from your platforms — A2X or Link My Books for Amazon/Shopify
3. Check your bank feeds are connected — no manual data entry
4. Ensure your VAT returns are submitted via your software, not manually through HMRC's portal

If You're a Sole Trader or Landlord Approaching £50,000

1. Start keeping digital records now — even if MTD ITSA doesn't apply to you until 2026 or later, building the habit early prevents a scramble later
2. Choose MTD-compatible software — Xero, QuickBooks, or FreeAgent are all suitable
3. Speak to your accountant about transitioning to quarterly reporting in 2025-26

Which Software Should You Use?

For most ecommerce sellers and small businesses, we recommend Xero — it has the strongest integrations with Amazon, Shopify, Stripe, and PayPal, robust MTD VAT filing, and excellent reporting. QuickBooks is a solid alternative, particularly for businesses with US connections.

FreeAgent is worth considering for very simple businesses (sole traders with straightforward income) but lacks the ecommerce integrations that most of our clients need.

Spreadsheets are not recommended — even with bridging software, they create unnecessary compliance risk and manual work.

Summary: Your MTD Checklist

1. If VAT-registered: confirm you're using MTD-compatible software and submitting digitally
2. If ecommerce: confirm your Amazon/Shopify data flows digitally into your software — not manually entered
3. If income over £50,000: prepare for MTD ITSA from April 2026 — start digital record-keeping now
4. Review your penalty points status if you've had any late submissions
5. Ask your accountant to confirm your digital links are fully compliant

If any of this is unclear or you're not confident about your current compliance position, book a free review. We'll check your setup and tell you exactly what, if anything, needs to change.