What Features Must MTD Software Have to be HMRC-Compatible in the UK?

Introduction: The Imperative of HMRC-Compatible MTD Software

The landscape of tax administration in the UK is undergoing a significant transformation with HMRC's Making Tax Digital (MTD) initiative. Far from being a mere suggestion, MTD for Income Tax Self Assessment (ITSA) is becoming a mandatory requirement for millions of self-employed individuals and landlords. A crucial aspect of this transition is the absolute necessity for compliant software. HMRC has made it clear that it will not provide its own proprietary software for MTD ITSA. Instead, taxpayers must select and utilise third-party tools that are specifically designed and approved to connect with HMRC's systems. This shift places the onus on businesses and landlords to understand precisely what constitutes an "HMRC-compatible" MTD software solution.

The compatibility extends beyond basic online filing. It encompasses a holistic approach to tax management, demanding robust digital record keeping, the capability for regular, usually quarterly, submissions of income and expenses, and the accurate processing of End of Period Statements and final annual declarations. Choosing the right software is not just about avoiding penalties, it is about embracing efficiency, reducing errors, and gaining clearer financial insight. This comprehensive guide will delineate the essential features and functionalities that MTD software must possess to meet HMRC's stringent compatibility standards, ensuring a smooth and compliant transition into the digital tax era.

Core Making Tax Digital Requirements Explained

Understanding the fundamental requirements of MTD ITSA is the first step in appreciating what HMRC-compatible software must deliver. MTD is more than just submitting a tax return online once a year, it is a continuous, digital process designed to improve accuracy and transparency.

What is Making Tax Digital for Income Tax Self Assessment (MTD ITSA)?

Making Tax Digital for Income Tax Self Assessment (MTD ITSA) is a government initiative to digitalise the UK tax system. Its primary goal is to make tax administration more effective, efficient, and easier for taxpayers to get their tax right. Instead of a single annual tax return, MTD ITSA requires businesses and landlords to:

• Keep digital records of their income and expenses.
• Send quarterly summaries of their income and expenses to HMRC using MTD-compatible software.
• Submit an End of Period Statement (EOPS) for each income source.
• Submit a Final Declaration, consolidating all income and reliefs, to finalise their tax position for the year.

This system aims to provide taxpayers with a near real-time view of their tax position, allowing them to better manage their finances and identify potential tax liabilities or refunds throughout the year, rather than facing a large bill at year-end.

Who Does MTD ITSA Affect?

MTD ITSA is being rolled out in phases. It will eventually apply to most self-employed individuals and landlords who are currently required to submit an Income Tax Self Assessment tax return.

The initial thresholds and dates are:

• From April 2026: Self-employed individuals and landlords with gross income from their business or property exceeding £50,000 per annum will be mandated to join MTD ITSA.
• From April 2027: This mandate will extend to self-employed individuals and landlords with gross income from their business or property exceeding £30,000 per annum.
• Future Expansions: HMRC has indicated that MTD ITSA will eventually apply to other taxpayer groups and potentially lower income thresholds, with further announcements expected.

Important Note on Gross Income: The income threshold for MTD ITSA refers to your gross income from your self-employment or property business, not your profit. If you have multiple businesses or properties, their gross incomes are combined to determine if you meet the threshold.

The MTD ITSA Timeline

Staying informed about the MTD ITSA timeline is crucial for planning your transition and ensuring compliance. The phased rollout allows businesses and landlords time to adapt their accounting practices and choose appropriate software.

• April 2026: MTD for ITSA mandated for self-employed and landlords with income over £50,000.
• April 2027: MTD for ITSA mandated for self-employed and landlords with income over £30,000.
• Future Dates: Expansion to other taxpayer groups and potentially lower income thresholds.

It is advisable for all self-employed individuals and landlords, regardless of current income, to consider preparing for MTD ITSA early. Voluntary adoption, or at least familiarisation with the requirements, can provide a smoother transition when it becomes mandatory for their income level.

Foundational Requirements for HMRC Compatibility

At the heart of MTD ITSA are two non-negotiable requirements: digital record keeping and the ability to connect directly with HMRC's systems. Any software claiming MTD compatibility must fundamentally address these.

Digital Record Keeping: The Cornerstone of MTD

The requirement to keep digital records is paramount. This means that income and expenditure must be recorded and stored electronically, not just summarised in a digital format at year-end. The software must be capable of capturing, storing, and presenting transaction data in a structured, digital format.

What Information Must Be Recorded Digitally?

For each business or property, the software needs to maintain specific digital records. These typically include, but are not limited to:

• Date of transaction: The exact date when income was received or an expense was incurred.
• Amount of transaction: The monetary value of the income or expense.
• Category of income/expense: A clear description of what the income relates to or what the expense was for, e.g., sales, rent, utilities, travel.
• Type of transaction: Whether it is income or an expense.
• VAT status (if applicable): If registered for VAT, whether VAT was charged or paid, and the amount.
• Bank account details (for bank transactions): Reference to the bank account used for the transaction.
• Invoice or receipt reference: A unique identifier for supporting documentation.

Crucial Detail: Each individual transaction, not just summaries, must be recorded digitally. For example, if you make 10 sales in a day, each sale needs to be recorded, not just the daily total.

Worked Example: Digital Record Keeping for a Landlord

Consider Sarah, a landlord with two rental properties. Her MTD-compatible software needs to capture the following for her property business:

Date	Type	Category	Description	Amount (£)	Property Ref
01/04/2026	Income	Rent	April Rent Payment	850.00	Prop A
05/04/2026	Expense	Repairs	Boiler service, Prop A	-120.00	Prop A
07/04/2026	Expense	Agent Fees	Management fee, Prop B	-75.00	Prop B
10/04/2026	Income	Rent	April Rent Payment	950.00	Prop B
15/04/2026	Expense	Utilities	Electric bill for vacant Prop A	-45.00	Prop A

The software must store each of these entries individually and ensure they are easily retrievable and categorised according to HMRC's guidelines.

Prohibited Methods of Record Keeping

It is important to note what is NOT considered digital record keeping for MTD purposes:

• Manual records: Paper ledgers, notebooks, or receipts stored physically are not sufficient. While physical receipts are still important for proof, the data itself must be digitised.
• Non-digital formats: Scanned images of invoices or receipts that are not then extracted into digital data, e.g., via OCR or manual entry into software, do not count as digital records. The data needs to be structured and machine-readable.
• Summarised records: Simply entering weekly or monthly totals without the underlying transaction detail is not compliant.

Connecting to HMRC Systems: The API Gateway

The second foundational requirement is the software's ability to communicate directly with HMRC's systems via an Application Programming Interface (API). This is how data is securely transmitted from your software to HMRC.

How Software Interacts with HMRC

HMRC's MTD API acts as a secure digital bridge. MTD-compatible software must be able to:

• Authenticate Users: Securely verify the identity of the taxpayer or their agent, linking their MTD account with the software.
• Submit Data: Send quarterly updates, End of Period Statements, and Final Declarations in the specific digital format required by HMRC.
• Receive Confirmations: Obtain immediate confirmation from HMRC that a submission has been received and processed.
• Retrieve Data (where applicable): In some cases, software may be able to pull information from HMRC, such as previous submissions or tax liabilities.

This direct digital link replaces manual data entry into the HMRC online portal for MTD submissions, significantly reducing the potential for transcription errors and streamlining the process.

Security and Data Integrity

Given the sensitive nature of financial data, MTD software must adhere to stringent security protocols. HMRC-compatible software should offer:

• Data Encryption: Ensuring all data transmitted to and from HMRC is encrypted to prevent unauthorised access.
• Secure Authentication: Implementing robust login procedures, often including multi-factor authentication, to protect user accounts.
• Compliance with Data Protection Regulations: Adhering to GDPR and other relevant data protection laws in the UK, safeguarding personal and financial information.
• Audit Trails: Maintaining a clear record of all submissions made to HMRC, including dates, times, and confirmation numbers, for audit purposes.

AccountsOS Security Commitment: AccountsOS employs industry-leading encryption and security measures to protect your financial data and ensure secure, compliant connections with HMRC's MTD API. Your privacy and data integrity are our top priorities.

Key Software Features for MTD Compliance

Beyond the foundational elements, MTD-compatible software must incorporate specific functionalities to manage the ongoing reporting requirements. These features are central to fulfilling the quarterly update, End of Period Statement, and Final Declaration obligations.

Quarterly Updates: Streamlining Your Submissions

The cornerstone of MTD ITSA is the requirement to submit summaries of business or property income and expenses to HMRC every three months. MTD software must facilitate this process efficiently and accurately.

What is a Quarterly Update?

A quarterly update is a summary of all business income and expenses for a three-month period. These are submitted to HMRC within one month of the end of each tax quarter. The software must aggregate the digitally recorded transactions into the required categories and format for submission.

Content of Quarterly Updates: Income and Expenses

The software needs to accurately categorise and sum up the following for each quarter:

• Total income for the period: Aggregated gross income from all relevant sources.
• Total expenses for the period: Aggregated allowable expenses, categorised as required.
• Adjustments (if any): Corrections for previous periods or specific tax adjustments.

The software should present a clear summary before submission, allowing the user to review and confirm the figures.

Making Adjustments and Corrections

Life is not always neat, and mistakes or late invoices can occur. MTD software should allow for:

• In-period adjustments: If an error is spotted before a quarterly update is submitted, the digital records can simply be corrected.
• Post-submission corrections: If an error is found after a quarterly update has been submitted, the software must facilitate the submission of an amended update for that specific quarter, or allow the adjustment to be included in a subsequent quarterly update.

Worked Example: Quarterly Update for a Self-Employed Consultant

John, a self-employed marketing consultant, needs to submit his quarterly update for the period 6 April to 5 July 2026. His MTD software has digitally recorded all his transactions.

Category	Amount (£)
Total Income	18,500.00
Sales/Service Income	18,500.00
Total Expenses	-3,200.00
Office Costs (Rent, Utilities)	-900.00
Travel Expenses	-350.00
Software Subscriptions	-150.00
Professional Fees	-1,800.00
Adjustments (e.g., late expense)	-100.00
Net Profit for Quarter	15,200.00

John's software compiles these figures, allows him to add an adjustment for a late-arriving receipt from the previous quarter, and then submits the summary to HMRC via the API. He receives an instant confirmation.

End of Period Statement (EOPS): Finalising Your Tax Year

After the final quarterly update for a tax year, an End of Period Statement (EOPS) must be submitted for each individual business or property income source. This statement allows for specific tax adjustments that are not typically made in the quarterly updates.

Purpose and Content of the EOPS

The EOPS consolidates the four quarterly updates for a specific income source and applies any necessary year-end accounting adjustments. It is submitted by the 31 January following the tax year. The software must be able to:

• Aggregate Quarterly Data: Combine all quarterly updates for a particular business or property.
• Apply Accounting Adjustments: Allow for entries such as:
  • Accruals and prepayments.
  • Capital allowances.
  • Stock adjustments.
  • Private use adjustments, e.g., for vehicle expenses.
  • Specific tax reliefs or disallowances.
• Calculate Taxable Profits: Determine the final taxable profit or loss for that specific income source for the tax year.

The EOPS is crucial because it converts the cash-basis data often used in quarterly updates into the accrual basis or adjusted cash basis required for final tax calculations, incorporating all statutory deductions and allowances.

Final Declaration: The Annual Tax Submission

The Final Declaration is the equivalent of the annual Self Assessment tax return under MTD. It brings together all income sources, including those not subject to MTD, e.g., employment income, dividends, interest, and applies personal allowances and reliefs to calculate the total income tax and National Insurance contributions due.

Consolidating All Income Sources

MTD software, or bridging software if used, must be able to:

• Import EOPS Data: Seamlessly pull in the finalised taxable profits from all submitted EOPS.
• Integrate Other Income: Allow for the manual or automated input of other income types, e.g., PAYE income from employment, bank interest, dividends, foreign income.

Personal Allowances and Reliefs

Crucially, the Final Declaration is where personal tax considerations come into play. The software should facilitate the inclusion of:

• Personal Allowance: The amount of income you can earn without paying tax.
• Blind Person's Allowance.
• Marriage Allowance.
• Pension contributions.
• Gift Aid donations.
• Other relevant reliefs and allowances.

Once all data is compiled, the software calculates the final tax liability and allows for the submission of the Final Declaration to HMRC.

Worked Example: Final Declaration for a Business Owner with Property Income

Maria runs a small graphic design business and also has a rental property.

Income/Relief Category	Amount (£)
Taxable Profit from Graphic Design (from EOPS)	45,000.00
Taxable Profit from Rental Property (from EOPS)	12,000.00
Employment Income (P60)	5,000.00
Bank Interest	250.00
Gross Income for Tax Purposes	62,250.00
Less: Personal Allowance (2026/27 est.)	-12,570.00
Less: Pension Contributions	-3,000.00
Taxable Income	46,680.00
Calculated Income Tax	5,136.00
Calculated Class 2 & 4 NIC	3,200.00
Total Tax and NIC Due	8,336.00

Maria's MTD software would pull in her business and property EOPS figures, allow her to add her PAYE income, bank interest, and pension contributions, then calculate her final tax and NIC liability before submitting the Final Declaration.

Error Correction and Amendments: Maintaining Accuracy

Even with the best digital records, errors can occur. HMRC-compatible software must provide clear, user-friendly mechanisms for correcting mistakes at various stages of the MTD process.

Correcting Errors in Quarterly Updates

If an error is discovered in a quarterly update after it has been submitted, the software should allow you to:

• Amend the original submission: For significant errors, the software should facilitate sending a revised update for the affected quarter directly to HMRC.
• Adjust in a subsequent submission: For minor errors, especially those that have a small financial impact, the software may allow for an adjustment to be included in a later quarterly update, rather than resubmitting the original. The software should guide the user on the most appropriate method based on HMRC rules.

Amending the EOPS or Final Declaration

Corrections to the EOPS or Final Declaration are more critical as they directly impact the final tax calculation. The software must:

• Enable amendment submissions: Provide a clear process to amend and resubmit an EOPS or Final Declaration to HMRC via the API.
• Track changes: Maintain an audit trail of all amendments made, including the original submission and the revised figures.
• Recalculate tax: Automatically recalculate the tax liability based on the amended figures.

Bridging Software vs. Full MTD Software: Which is Right for You?

When choosing MTD-compatible software, it is important to understand the two main categories available: full MTD software and bridging software.

When to Use Bridging Software

Bridging software acts as a link between non-MTD compliant digital records, such as spreadsheets, and HMRC's MTD systems. It is suitable for taxpayers who:

• Prefer spreadsheets: Are comfortable and proficient with using spreadsheets for their digital record keeping.
• Have simpler affairs: Their income and expenses are straightforward, making spreadsheet management feasible.
• Need a temporary solution: May use it as an interim step before fully transitioning to a comprehensive software package.

Important Bridging Software Caveat: Even with bridging software, the underlying digital records in your spreadsheet must still meet HMRC's digital record keeping requirements for each individual transaction. Bridging software simply facilitates the submission, it does not create the digital records.

Advantages of Full MTD Software

Full MTD software solutions, such as AccountsOS, are designed to handle the entire MTD process from start to finish. Their advantages include:

• Integrated digital record keeping: Built-in features for recording every transaction, often with bank feeds and automated categorisation.
• Comprehensive MTD workflow: Manages quarterly updates, EOPS, and Final Declarations seamlessly within one system.
• Reduced manual effort: Automation of data entry and categorisation saves significant time and minimises errors.
• Enhanced financial insights: Often includes reporting tools, dashboards, and real-time tax estimates.
• Scalability: Better suited for growing businesses or landlords with multiple properties due to its robust features and automation.
• Easier error correction: Integrated systems make it simpler to track and correct errors across all submissions.

For most taxpayers, particularly those with more complex affairs or those looking for long-term efficiency, a full MTD software solution is generally the recommended choice.

Advanced Features for Enhanced MTD Compliance and Efficiency

While the core features ensure HMRC compatibility, many MTD software solutions offer advanced functionalities that significantly streamline tax management, improve financial visibility, and provide peace of mind. These features are not strictly mandated by HMRC but are highly beneficial.

Automated Categorisation and Bank Feeds

One of the biggest time-savers in modern accounting software is automation. An advanced MTD solution should offer:

• Direct bank feeds: Securely connect to your business bank accounts to automatically import transactions.
• Smart categorisation: Use AI and machine learning to suggest or automatically apply expense and income categories based on past entries and common practices. This drastically reduces manual data entry.
• Receipt capture: Allow users to snap photos of receipts, extract key data using OCR technology, and attach them to transactions for robust digital record keeping.

Integration with Other Financial Tools

For a truly integrated financial management experience, MTD software can offer:

• Payment processors: Connect with platforms like Stripe or PayPal to automatically record sales income.
• E-commerce platforms: Integrate with Shopify, eBay, or Etsy for seamless sales data import.
• Payroll software: If you have employees, integration can help reconcile payroll expenses.

Multi-Business and Multi-Property Management

For individuals with multiple income sources that fall under MTD ITSA, the software should:

• Separate accounting: Maintain distinct digital records for each business or property.
• Consolidated view: Provide an overarching dashboard that summarises performance across all entities.
• Multiple EOPS submissions: Facilitate the submission of an EOPS for each individual income source.

Real-Time Tax Estimates

A significant benefit of digital record keeping and quarterly updates is the ability to project tax liability throughout the year. Advanced software can:

• Estimate income tax: Provide an ongoing estimate of your income tax liability based on your recorded income and expenses, incorporating current tax rates and allowances.
• Forecast National Insurance: Project your Class 2 and Class 4 National Insurance contributions.
• Payment on account reminders: Help you plan for your payments on account by showing estimated future liabilities.

AccountsOS Real-Time Tax Estimates: AccountsOS provides dynamic, real-time tax estimates, updating your projected Income Tax and National Insurance liability as you record transactions. This empowers you to manage your cash flow effectively and avoid year-end surprises.

Reporting and Analytics for Business Insights

Beyond compliance, good MTD software can be a powerful business tool, offering:

• Profit and Loss reports: Generate clear reports to understand your financial performance.
• Expense breakdown: Visualise where your money is going with categorised expense reports.
• Cash flow statements: Monitor the movement of money in and out of your business or property portfolio.
• Customisable dashboards: Tailor your view to see the most relevant financial metrics at a glance.

User-Friendly Interface and Accessibility

The best software is intuitive and easy to use. Key aspects include:

• Intuitive design: A clean, logical interface that makes navigation and data entry straightforward.
• Mobile app: The ability to manage records and view finances on the go via a dedicated mobile application.
• Clear guidance: In-app help, tooltips, and explanations to guide users through complex tax concepts and submission processes.

Robust Security and Data Protection

As mentioned, security is paramount. Advanced software goes further by offering:

• Regular security audits: Independent verification of security measures.
• Data backup and recovery: Ensuring your critical financial data is always safe and recoverable.
• Granular user permissions: If you work with an accountant, the ability to grant specific access levels.

Dedicated Support and Resources

Even the most user-friendly software can present challenges. Comprehensive support is invaluable:

• Customer support: Access to knowledgeable support staff via phone, email, or live chat.
• Knowledge base: A comprehensive library of articles, FAQs, and tutorials.
• Community forums: A platform for users to share tips and get advice from peers.
• Tax guidance: Resources that explain MTD rules and tax implications in plain English.

Choosing the Right MTD Software for Your Needs

With numerous MTD-compatible software options available, selecting the best one requires careful consideration of your specific circumstances.

Assessing Your Business or Property Portfolio Size

The scale of your operations significantly influences your software needs:

• Small, simple affairs: For a single, straightforward self-employment or property income source with few transactions, a basic MTD software or bridging software might suffice initially.
• Growing businesses/multiple properties: As complexity increases, robust full MTD software with automation, integration, and multi-entity management features becomes essential to maintain efficiency and accuracy.

Considering Your Accounting Knowledge

Your personal comfort level with accounting principles plays a role:

• Limited accounting experience: Look for software with intuitive interfaces, automated categorisation, and clear guidance. Features like real-time tax estimates can be particularly helpful.
• Experienced users/accountants: More advanced software might offer greater customisation, detailed reporting, and integration capabilities that leverage existing knowledge.

Evaluating Software Costs and Value

MTD software comes with varying price tags, often based on features and user count.

• Subscription models: Most MTD software operates on a monthly or annual subscription. Compare pricing tiers based on the features you genuinely need.
• Value for money: Consider not just the cost, but the time saved, errors prevented, and insights gained. A slightly more expensive software might pay for itself through increased efficiency and reduced accounting fees.
• Free trials: Many providers offer free trials, allowing you to test the software's suitability before committing.

Checking for HMRC Recognition and Reviews

Crucially, ensure the software you choose is genuinely MTD-compatible and recognised by HMRC.

• HMRC's list: Always refer to the official list of MTD-compatible software on the GOV.UK website. This confirms the software has met HMRC's technical requirements.
• User reviews: Read reviews from other businesses and landlords to gauge user experience, reliability, and customer support quality.
• Accountant recommendations: Your accountant or tax advisor can often provide valuable recommendations based on their experience with various platforms.

Penalties for Non-Compliance with MTD ITSA

Adhering to MTD ITSA requirements is not optional once you meet the income threshold. HMRC has a penalty regime in place for non-compliance, designed to encourage timely and accurate submissions. These penalties can add significant financial burden if ignored.

Late Submissions

HMRC operates a points-based penalty system for late MTD submissions, including quarterly updates, EOPS, and the Final Declaration.

• Points accumulation: For each late submission, you will receive a point.
• Penalty threshold: Once you reach a certain number of points, e.g., 4 points for annual filers, 2 points for quarterly filers, a financial penalty is triggered.
• Financial penalty: The initial financial penalty is typically £200. Further penalties may apply for continued non-compliance.
• Points expiry: Points expire after a certain period of compliance, allowing taxpayers to reset their record.

The software's ability to provide timely reminders and facilitate quick submissions is therefore a critical feature in avoiding these penalties.

Incorrect Submissions

HMRC can also issue penalties for inaccuracies in your submissions, particularly if they lead to an understatement of tax. The severity of the penalty depends on the nature of the error:

• Careless error: If the inaccuracy is due to a failure to take reasonable care, the penalty can range from 0% to 30% of the additional tax due.
• Deliberate but not concealed: If the inaccuracy is deliberate but not an attempt to conceal, the penalty can range from 20% to 70% of the additional tax due.
• Deliberate and concealed: For deliberate inaccuracies that are also concealed, the penalty can range from 30% to 100% of the additional tax due.

MTD software with robust digital record keeping, automated categorisation, and clear review processes helps minimise the risk of such errors.

Late Payments

Separate from submission penalties, HMRC charges interest on any tax paid late. Additionally, late payment penalties can be applied:

• 30 days late: A penalty of 2% of the unpaid tax.
• 6 months late: An additional penalty of 2% of the unpaid tax.
• 12 months late: A further additional penalty of 2% of the unpaid tax.

Scenario	Penalty
Failure to submit quarterly updates	Points-based system, leading to fines.
Failure to submit EOPS/Final Declaration	Points-based system, leading to fines.
Incorrect records or submissions	Penalties based on the 'carelessness' of the error, ranging from 0% to 100% of the additional tax due.
Late payment of tax	Interest charged on overdue amounts, plus potential late payment penalties.

Interest: HMRC also charges interest on late payments at the Bank of England base rate + 2.5%. This interest is charged from the day after the payment was due until it is paid in full.

Software that provides real-time tax estimates and payment reminders is invaluable in helping taxpayers manage their cash flow and meet payment deadlines, thereby avoiding these costly penalties and interest charges.

Benefits of Using HMRC-Compatible MTD Software

Beyond merely meeting compliance requirements, embracing MTD-compatible software offers a multitude of advantages that can positively impact your business or property management.

Reduced Errors and Improved Accuracy

Digital record keeping and automated submissions significantly reduce the potential for human error associated with manual data entry and calculations.

• Minimised transcription errors: Direct bank feeds and automated categorisation mean less manual typing.
• Accurate calculations: Software performs calculations based on HMRC rules, reducing mathematical mistakes.
• Consistent categorisation: Helps ensure expenses and income are consistently categorised according to tax guidelines.

Time Savings and Efficiency

Automating routine accounting tasks frees up valuable time that can be better spent on core business activities or personal pursuits.

• Faster record keeping: Bank feeds and receipt scanning accelerate the process of logging transactions.
• Streamlined submissions: Quarterly updates are generated and submitted with minimal effort once records are up to date.
• Reduced year-end scramble: Spreading tax tasks throughout the year eliminates the stressful annual rush.

Better Financial Visibility

Having up-to-date digital records provides a clearer, more immediate picture of your financial health.

• Real-time insights: Understand your income, expenses, and profitability at any given moment.
• Improved decision-making: Access to accurate, current financial data supports better business and investment decisions.
• Cash flow management: Anticipate tax liabilities and manage your cash flow more effectively with real-time tax estimates.

Peace of Mind with Compliance

Knowing that your tax affairs are managed compliantly and efficiently provides significant peace of mind.

• Reduced stress: Less worry about missing deadlines or making errors that could lead to penalties.
• HMRC approval: Using software recognised by HMRC ensures you are meeting the technical requirements.
• Audit readiness: Comprehensive digital records and audit trails make it easier to respond to any HMRC queries.

Frequently asked questions

What is Making Tax Digital for Income Tax Self Assessment (MTD ITSA)?

MTD ITSA is an HMRC initiative requiring most self-employed individuals and landlords to keep digital records of their income and expenses and to submit quarterly updates to HMRC using MTD-compatible software. It aims to make tax administration more efficient and reduce errors.

Who needs to comply with MTD ITSA?

From April 2026, self-employed individuals and landlords with gross income over £50,000 will need to comply. From April 2027, this will extend to those with gross income over £30,000. Further expansions to other groups are expected in the future.

Can I use spreadsheets for MTD ITSA?

You can use spreadsheets for digital record keeping, but they must be combined with 'bridging software' that can extract the necessary data and submit it to HMRC in an MTD-compatible format. Standalone spreadsheets are not sufficient.

What is the difference between an End of Period Statement (EOPS) and a Final Declaration?

The EOPS is submitted for each income source, allowing for specific tax adjustments related to that business or property. The Final Declaration brings together all income sources, personal allowances, and reliefs to calculate the total tax liability for the year.

How often do I need to submit information to HMRC under MTD ITSA?

You must submit quarterly updates of your income and expenses, an End of Period Statement after your accounting period ends, and a Final Declaration by 31 January following the tax year.

What happens if I make a mistake in my MTD submission?

MTD-compatible software should allow you to correct errors. Minor errors in quarterly updates can often be corrected in a subsequent update. More significant errors or those in the EOPS or Final Declaration may require specific amendment processes within the software and via HMRC's API.

Will MTD software automatically calculate my tax bill?

While MTD software helps you record and submit your income and expenses digitally, the final tax calculation, including personal allowances and reliefs, is typically part of the Final Declaration process. Many advanced MTD software solutions, like AccountsOS, offer real-time tax estimates to help you plan.

How do I choose the right MTD-compatible software?

Consider factors such as your business type and size, the complexity of your income and expenses, your existing accounting knowledge, budget, and the level of support offered. Always check that the software is officially recognised by HMRC for MTD ITSA.

Related guides

• MTD for Landlords Guide
• Self-Employed Tax Guide
• All Tax Deadlines UK
• How AccountsOS Works with MTD