Making Tax Digital (MTD): Step-by-Step for Small Businesses

Making Tax Digital (MTD) is reshaping how UK small businesses handle tax, VAT, and accounting. With new digital requirements and staggered rollout dates, it can feel overwhelming to keep compliant—and costly if you get it wrong. This in-depth guide demystifies MTD, covers all current and upcoming obligations, explains the software and process choices, and walks you step-by-step through what you must do to comply. Whether you’re VAT-registered or eyeing the future for Income Tax and Corporation Tax, you’ll find practical, UK-specific advice to get—and stay—MTD-ready.

Making Tax Digital (MTD) is a UK government initiative aimed at transforming tax administration into a more efficient, effective, and simpler process. Launched by HMRC, it requires businesses and individuals to keep digital records and submit tax data directly using compatible software. The goal is to reduce errors, improve accuracy, and create a more modern tax system. For small businesses, MTD represents a significant shift away from paper-based processes and manual data entry.

The first phase of MTD focused on VAT, but the regime is expanding to cover Income Tax (for sole traders and landlords) and will eventually include Corporation Tax. Understanding the scope and timeline of MTD is critical, as penalties for non-compliance are real and increasing. Many small businesses are still adapting, and with deadlines approaching for wider rollout, it’s essential to be proactive.

MTD isn’t just about submitting returns differently—it’s about fundamentally changing how you record, store, and transmit tax information. This means investing in compatible software, updating processes, and sometimes adjusting how you work with accountants or bookkeepers. While the government promotes the benefits (like fewer errors and faster refunds), the transition does come with costs and learning curves, especially for the smallest firms.

MTD has a staged rollout, and understanding your obligations depends on your business structure, turnover, and whether you’re VAT-registered. Since April 2022, all VAT-registered businesses—regardless of turnover—must comply with MTD for VAT. Previously, only those above the £85,000 VAT threshold were required. Now, even voluntarily registered businesses are included.

For sole traders and landlords, MTD for Income Tax Self Assessment (ITSA) is the next big change. From April 2026, sole traders and landlords with income over £50,000 will need to follow MTD for ITSA. Those earning over £30,000 will be included from April 2027. General partnerships and companies are not yet required, but HMRC has signalled further expansion is likely, with Corporation Tax MTD pencilled in for some time after 2026.

If you’re running a limited company, MTD doesn’t directly change your Corporation Tax process yet, but it’s wise to monitor developments and prepare for future digitalisation. If you’re a micro-business, side-hustler, or landlord near the threshold, keep an eye on your income and plan ahead for MTD obligations before you cross the line.

• All VAT-registered businesses must comply with MTD for VAT—there are no exceptions for turnover.
• Sole traders and landlords over £50,000 income: MTD for ITSA applies from April 2026.
• Sole traders and landlords over £30,000 income: MTD for ITSA applies from April 2027.
• Corporation Tax MTD is coming, but HMRC has not set a firm date yet.
• If you deregister for VAT, you must continue MTD for returns covering your VAT period.

At its core, MTD is about three things: keeping digital records, using compatible software, and submitting returns directly to HMRC via an API. The days of handwritten ledgers, basic spreadsheets, and manual web portal entries are numbered. You must store your transactional data in a digital format, maintain a digital audit trail, and use software that links directly to HMRC’s systems.

For MTD for VAT, you must keep digital records of sales, purchases, VAT on sales and purchases, and adjustments. For MTD for ITSA, the requirement expands to include all business income and expenses, with quarterly updates, an annual end-of-period statement, and a final declaration. Each data point must be entered and maintained digitally—no re-keying or manual cut-and-paste allowed between systems.

Crucially, the software you use must be HMRC-recognised for MTD, and any spreadsheets must be digitally linked (not manually copied) to the submission software. Bridging software can be used if you want to keep spreadsheets, but you still need to ensure digital links are maintained. Failure to comply with digital record-keeping or submission requirements can trigger penalties and invalidate your returns.

• Maintain digital records of all transactions: sales, purchases, VAT breakdowns, and adjustments.
• Use only HMRC-recognised MTD-compatible software for record keeping and submissions.
• Spreadsheets are allowed, but must be digitally linked to MTD bridging software.
• Manual re-keying or copy-pasting between systems does not meet MTD requirements.
• Quarterly updates and annual declarations are mandatory for MTD for ITSA.

One of the most common mistakes is assuming that using any accounting software is sufficient. HMRC-recognised MTD compatibility is essential—some older or basic online tools do not meet the requirements. Always check the current HMRC list before committing to new software.

Selecting the right software is a key business decision. There’s a wide range of MTD-compatible solutions available, from major cloud platforms to specialist bridging software for spreadsheet users. Your choice will depend on business size, complexity, budget, and how you want to manage your accounts going forward.

For many small businesses, cloud accounting platforms such as Xero, QuickBooks Online, Sage Business Cloud, and FreeAgent are the most straightforward route. These providers are fully MTD-ready, offer automatic digital links, and can handle everything from invoicing to VAT returns. For micro-businesses or those with simple needs, there are also free or low-cost options like Clear Books Micro or HMRC's own list of free tools.

If you prefer to keep using spreadsheets, bridging software provides a digital link between your records and HMRC. Popular options include Absolute Excel VAT Filer, BTCSoftware, and TaxCalc. However, bridging solutions can be fiddly, and HMRC expects digital links throughout, not just at the point of submission. It's vital to ensure your spreadsheet processes are fully compliant.

• Check the current HMRC list of MTD-compatible software before purchasing.
• Consider cloud accounting platforms for end-to-end digital compliance.
• If using spreadsheets, ensure your bridging software maintains digital links at every step.
• Factor in ongoing subscription costs and support options.
• Look for tools that scale with your business as MTD expands to other taxes.

Don’t forget about your accountant or bookkeeper. Many now offer discounted software as part of their service, or can handle MTD submissions for you. If you’re unsure, ask your accountant for recommendations—they may also help you migrate your data.

Getting MTD-ready involves more than just buying software. You need to review your processes, update your records, register for MTD with HMRC, and ensure you or your accountant are set up for digital submissions. Here’s a practical, step-by-step guide to get you compliant and avoid common pitfalls.

Timing is critical. Do not wait until your VAT or tax return deadline to start. HMRC recommends allowing at least a month before your first MTD submission to complete registration and test your software links.

• Digitise all historic records before your first MTD period starts—HMRC can ask for digital audit trails.
• Keep your Government Gateway login and business details up to date.
• Schedule quarterly reminders for MTD deadlines in your calendar.
• If you use an accountant, agree who is responsible for submissions and who holds the Gateway credentials.

Even well-intentioned businesses fall foul of MTD rules. The most frequent issues are failing to keep all records digitally, using non-compliant software, or missing deadlines. HMRC has moved away from a soft landing—penalties for MTD failures now apply, with point-based surcharges for late returns and fines for inadequate records.

If you continue to use manual processes (paper, non-digital invoices, or stand-alone spreadsheets without digital links), you are at risk of penalties. Similarly, submitting VAT returns via the old HMRC portal is no longer allowed for MTD-mandated businesses. All returns must be filed through compatible software or bridging tools.

Penalties for late VAT submissions under MTD are now based on a points system. For each late submission, you get a point. Once you hit a threshold (two points for annual VAT returns, four for quarterly), a £200 penalty applies, with further penalties for subsequent breaches. For digital record-keeping failures, fines can reach up to £3,000 per breach.

• Never submit VAT returns via the old HMRC portal if you’re under MTD.
• Ensure all data is entered and stored digitally—no paper records.
• Review software updates regularly to maintain compliance.
• Keep evidence of digital links—HMRC may inspect your digital audit trail.
• Act immediately if you receive a penalty notice—contact HMRC if you believe it’s in error.

Remember, ignorance is not a defence. If you’re unsure, seek advice from your accountant or a professional body like the ICAEW or ACCA, or contact HMRC’s MTD helpline directly.

Not every business or individual can comply with MTD, and HMRC recognises this. Exemptions are available for those with severe digital, religious, or geographical challenges. However, these are rarely granted and require a formal application with supporting evidence. For most small businesses, especially those with internet access, exemption is not an option.

Partnerships have a slightly different MTD timetable. General partnerships will need to comply with MTD for ITSA, but not before April 2027. Complex partnerships (including LLPs and those with corporate members) will be brought in at a later, as yet unspecified date. If you run a property business with multiple landlords, each must individually comply if their income exceeds the threshold.

If you’re a landlord with multiple properties, you must keep digital records for each one but submit a single MTD return per HMRC account. Mixed businesses (e.g. trading plus rental income) must combine their income to determine if they cross the threshold. If you’re jointly letting property, each co-owner’s share is counted separately.

• Exemptions are possible but only for severe digital exclusion cases.
• General partnerships join MTD for ITSA in April 2027.
• Mixed income (trading + property) must be combined for threshold assessment.
• Each landlord is assessed based on their share of property income, not the total property rent.
• If you change business structure (e.g. sole trader to limited company), you must re-register for MTD.

Don’t assume you qualify for exemption just because you’re not tech-savvy. HMRC expects most businesses to comply, even in rural areas with limited broadband. If you’re struggling, consider hiring a bookkeeper or using a local co-working space with better internet.

Implementing MTD isn’t free. Costs include software subscriptions (typically £12–£30/month for cloud platforms, or £40–£80/year for bridging software), possible hardware upgrades, and staff training. If you rely on an accountant, fees may increase—especially for quarterly ITSA submissions from 2026. However, there are long-term benefits: reduced errors, faster VAT refunds, and better financial visibility.

For many small businesses, the greatest challenge is the initial transition. Expect a learning curve and set aside time for staff training or process redesign. Over time, MTD can streamline your finances, help you spot cash flow problems earlier, and reduce the risk of surprise tax bills. Many users report that once established, digital systems save time and improve business insight.

It’s also an opportunity to futureproof your business. As HMRC expands MTD to cover more taxes (Corporation Tax, possibly PAYE), having robust digital processes in place now will make further transitions easier. Cloud-based accounting also enhances your ability to work flexibly, collaborate with your accountant, and respond to HMRC queries quickly.

• Budget for initial setup and ongoing software subscriptions.
• Factor in staff training costs and possible need for outside support.
• Take advantage of software trials and free HMRC webinars.
• Plan for annual reviews of your digital processes as MTD rules evolve.
• Monitor future MTD rollout dates for Income Tax and Corporation Tax.

Don’t forget about data security. Storing records digitally brings risks as well as benefits. Choose software with strong encryption, regular backups, and GDPR compliance. Review your processes for handling sensitive customer and financial data to avoid breaches.