From 6 April 2027, sole-trader contractors, freelancers and other self-employed individuals with more than £30,000 of qualifying income will need to comply with Making Tax Digital for Income Tax Self Assessment.
For contractors joining from this date, HMRC determines eligibility using qualifying income reported on the 2025–26 Self Assessment return. The threshold is based on gross qualifying income before expenses, meaning contractors must consider their total income rather than their final profit.
Taxpayers who fall within the MTD ITSA rules must maintain electronic records, submit information through approved HMRC-compatible software, and provide regular quarterly updates. CIS subcontractor should note that HMRC assesses eligibility based on gross income before CIS deductions.
Preparing early by choosing suitable software, improving bookkeeping processes and understanding HMRC deadlines will help contractors reduce compliance risks and manage the transition more effectively.
- MTD ITSA applies from 6 April 2027 to sole-trader contractors, freelancers and landlords with qualifying income above £30,000.
- HMRC determines eligibility using qualifying income from the previous tax year, meaning the April 2027 group is assessed using 2025–26 Self Assessment figures.
- The threshold is based on gross qualifying income, not profit after expenses.
- CIS subcontractors must use gross payments before CIS deductions when checking whether they meet the threshold.
- Contractors within MTD ITSA must maintain digital records and submit quarterly updates through compatible software.
What Is MTD ITSA and Why Does It Matter for Contractors?
Making Tax Digital for Income Tax Self Assessment (MTD ITSA) is a key part of HMRC’s move towards a more modern and efficient tax system. The initiative is designed to improve how taxpayers manage and report their income by moving away from a single yearly submission to a more frequent digital reporting process.
Under the current Self Assessment system, many contractors keep records throughout the year before preparing one annual tax return after the tax year ends. While this approach has worked for many years, it can sometimes lead to problems such as missing receipts, inaccurate expense claims, or unexpected tax liabilities.
MTD ITSA introduces a more continuous reporting structure. Taxpayers who fall within the rules will need to:
- Keep income and expense records digitally
- Use HMRC-compatible accounting software
- Submit quarterly updates to HMRC
- Complete a final declaration after the end of the tax year
The quarterly updates do not require contractors to calculate and pay their final tax bill every three months. Instead, they provide HMRC with updated information about income and expenses during the year.
For contractors, the biggest adjustment will be changing bookkeeping habits. Managing financial records regularly will become much more important than gathering everything together at year-end.
When Does MTD ITSA Apply to Contractors?
MTD ITSA is being introduced gradually based on qualifying income levels. The current rollout timeline is:
Start Date | Qualifying Income Threshold | Who Is Affected |
6 April 2026 | Above £50,000 | Sole traders and landlords meeting the threshold |
6 April 2027 | Above £30,000 | More sole-trader contractors, freelancers and landlords |
6 April 2028 | Above £20,000 | Further expansion of MTD ITSA |
The important point is that HMRC does not look at profit when deciding whether someone needs to join MTD ITSA. The calculation is based on gross qualifying income.
For contractors joining from April 2027, HMRC uses qualifying income reported on the 2025–26 Self Assessment return to determine whether the threshold has been exceeded.
For example:
A sole-trader contractor earns:
- Contract income: £45,000
- Business expenses: £15,000
The contractor’s taxable profit may be £30,000, but their qualifying income remains £45,000. Because the threshold calculation uses gross income, they may need to follow MTD ITSA rules.
Who Needs to Follow MTD ITSA Rules?
MTD ITSA applies to individuals receiving income from self-employment or property businesses. This includes:
- Sole-trader contractors
- Freelancers
- CIS subcontractors
- Sole traders operating their own businesses
- Landlords with qualifying property income
Being a contractor alone does not mean that an individual must follow MTD ITSA rules. The requirements apply based on the type and level of qualifying income. For instance, someone who operates through a limited company is not required to register for MTD ITSA personally just because they receive a salary or dividends from that company.
Qualifying income includes:
- Trading income from self-employment
- Property rental income
Certain sources of income are excluded when calculating whether an individual meets the MTD ITSA threshold. These include:
- PAYE employment salary
- Dividend income
- Pension income
- Savings income
Contractors should therefore review the correct income sources when deciding whether MTD ITSA applies.
How MTD ITSA Affects CIS Subcontractors
CIS subcontractors should pay particular attention to MTD ITSA because the threshold calculation is based on gross income before CIS deductions. A common misunderstanding is that CIS deductions reduce income for MTD ITSA purposes. However, CIS deductions are advance payments towards tax and are recorded separately. HMRC considers the contractor’s gross income before these deductions when assessing whether the threshold has been exceeded.
For example:
Description | Amount |
Gross contract payments | £55,000 |
CIS deductions | £11,000 |
Amount received after deductions | £44,000 |
For MTD ITSA purposes, the qualifying income figure is £55,000.
Contractors should therefore avoid relying only on bank statements when checking eligibility. Keeping CIS deduction statements, invoices and payment records will be important.
CIS subcontractors should also keep accurate records of labour costs, materials, and VAT where relevant, as these details may be needed for accurate accounting and tax reporting.
Important MTD ITSA Deadlines for Contractors in 2027
Once a taxpayer enters MTD ITSA, they must submit quarterly updates to HMRC using compatible software. These updates give HMRC cumulative information about income and expenses from the start of the tax year through the reporting period. For contractors joining MTD ITSA from 6 April 2027, the reporting deadlines are:
Reporting Period Covered | What Is Submitted | Submission Deadline |
6 April 2027 – 5 July 2027 | First quarterly update showing cumulative income and expenses from the start of the tax year | 7 August 2027 |
6 April 2027 – 5 October 2027 | Second quarterly update showing cumulative figures for the tax year to date | 7 November 2027 |
6 April 2027 – 5 January 2028 | Third quarterly update showing cumulative figures for the tax year to date | 7 February 2028 |
6 April 2027 – 5 April 2028 | Fourth quarterly update covering the complete tax year position | 7 May 2028 |
After the end of the tax year | Final declaration confirming income, reliefs and the overall tax position | 31 January 2029 |
Quarterly updates are reporting requirements only. They do not mean contractors must calculate or pay their tax liability every three months. Tax payments will continue to follow the normal Self Assessment payment schedule.
For taxpayers within MTD ITSA, the quarterly updates and final declaration replace the traditional annual Self Assessment tax return. However, Self Assessment remains part of the wider tax system, and taxpayers may still need to report other income, allowances, reliefs, or adjustments through the final declaration.
Digital Record-Keeping Requirements Under MTD ITSA
One of the biggest changes under MTD ITSA is the requirement for contractors to maintain digital financial records throughout the year. Under the traditional Self Assessment system, many contractors collect receipts, invoices and expense details before preparing their accounts at year-end. However, this approach will no longer suit those within MTD ITSA.
From April 2027, affected contractors must record business income and expenses digitally using HMRC-compatible software. These records will form the basis of quarterly updates submitted to HMRC and help ensure financial information remains accurate and up to date.
Digital record-keeping gives contractors better visibility of their business finances, allowing them to monitor income, expenses, and estimated tax liabilities throughout the year rather than waiting until the end of the tax period.
MTD ITSA Penalties: What Contractors Need to Know
With MTD ITSA introducing more frequent reporting, meeting submission deadlines will become an important part of contractor compliance. From the 2027–28 tax year onwards, HMRC’s points-based penalty system means that missing a quarterly update or relevant tax deadline can result in one penalty point. Once a taxpayer reaches four points, a £200 penalty will apply, with further penalties possible if deadlines continue to be missed while points remain active.
Additional penalties may also apply for late tax payments, inaccurate information or failing to maintain proper records. While HMRC has introduced measures to help taxpayers adapt to the new system, contractors should establish reliable processes from the start. Keeping digital records updated throughout the year, rather than relying on year-end bookkeeping, will make quarterly reporting more manageable. Regular reviews of invoices, expenses and financial records can help prevent errors, reduce administrative pressure and ensure submissions are completed accurately and on time.
Are Any Contractors Exempt From MTD ITSA?
Although most eligible taxpayers must follow MTD ITSA requirements, some individuals may qualify for an exemption. HMRC may accept that digital record-keeping is not reasonably practical in certain circumstances, including situations involving:
- Age
- Disability
- Location or lack of reliable digital access
- Religious beliefs
HMRC considers each exemption request based on individual circumstances. Contractors who believe they may struggle to meet digital requirements should contact HMRC to discuss whether an exemption applies.
How Contractors Can Prepare for MTD ITSA in 2027
Preparing for MTD ITSA early will help contractors transition smoothly and avoid last-minute compliance issues. The first step is to check whether the rules apply by reviewing qualifying income, based on gross income before expenses and CIS deductions. For contractors joining from April 2027, HMRC will assess eligibility using figures reported on the 2025–26 Self Assessment return.
Choosing suitable HMRC-compatible software is also essential. The right system should support digital record-keeping, HMRC submissions and accurate tracking of income and expenses, including CIS-related transactions where required.
Contractors should begin moving records online before the deadline by organising invoices, receipts and financial data digitally. A regular bookkeeping routine and professional advice when needed can simplify quarterly reporting and support ongoing compliance.
Final Thoughts
MTD ITSA is a significant change for sole-trader contractors, freelancers and CIS subcontractors, requiring a move towards digital record-keeping and quarterly reporting from 6 April 2027 for those above the £30,000 threshold.
Preparing early can make the transition much easier. With the right software, accurate records and a clear understanding of HMRC requirements, contractors can stay compliant while gaining better visibility of their finances.
Cartwheel International helps contractors navigate every stage of the MTD ITSA transition, from software setup and digital bookkeeping to CIS compliance, VAT returns and Self Assessment support. Get expert guidance today to ensure your records are ready before the new reporting requirements begin.
Frequently Asked Questions
For taxpayers within MTD ITSA, quarterly updates and the final declaration replace the traditional annual Self Assessment tax return. However, Self Assessment continues as the wider tax system, and taxpayers may still need to report other income, reliefs and adjustments through the final declaration.
No. MTD ITSA changes how contractors report information to HMRC but does not introduce quarterly tax payments. Tax payments will continue according to the normal Self Assessment deadlines.
No. HMRC calculates the threshold using gross CIS income before deductions. CIS deductions are recorded separately as advance payments towards tax.
Yes, but spreadsheets must meet HMRC’s digital record requirements and maintain appropriate digital links. Manual copying of information between systems may not meet MTD ITSA rules.
