What Cis Contractors Should Know About Making Tax Digital 2025?

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Tax laws are changing and for contractors, these changes are important to keep up with. The UK government’s Making Tax Digital (MTD) initiative, which aims to digitise tax reporting, is set to transform the way businesses, including contractors, interact with HMRC.

With the upcoming deadlines and mandatory changes in 2025, contractors must ensure they are ahead of the game.

Here’s a deep dive into everything contractors need to know, including

  • What is Making Tax Digital?
  • MTD Impacts on CIS Contractors and Subcontractors
  • What Steps Should Contractors Be Taking Now, and
  • Much More…

Let’s get started!

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What is Making Tax Digital (MTD)?

Making Tax Digital (MTD) is a UK government move to modernise the tax system. It will help businesses and contractors transition from paper based methods to digital solutions. The idea is to streamline how businesses interact with HMRC, ensuring tax data is submitted digitally and on time, with fewer errors and delays.

For contractors, this shift is crucial, as it means adopting digital tools for tax filings, including quarterly updates instead of annual returns. This initiative aims to reduce administrative burdens while increasing accuracy in reporting.

What is the Construction Industry Scheme (CIS)?

The Construction Industry Scheme (CIS) is a tax system for the construction industry. It makes sure contractors deduct tax from payments to subcontractors. This tax is then sent directly to HMRC. Hence, If you’re a contractor in construction, you’ll need to deduct tax from payments made to subcontractors.

Under the Construction Industry Scheme (CIS), it’s essential for contractors to register as a CIS contractor with HMRC before hiring or paying subcontractors. This registration ensures that all payments are made in line with HMRC’s tax compliance rules, preventing penalties and unnecessary deductions. Once registered, contractors must verify their subcontractors to determine whether deductions should be made at the standard, higher, or gross rate. The CIS registration process also helps maintain transparency between contractors and HMRC, allowing accurate record-keeping and timely submission of monthly returns. For businesses in the construction sector, registering as a CIS contractor is not only a legal requirement but also a crucial step toward building credibility, maintaining compliance, and ensuring smooth financial operations within the UK tax system.

How MTD and CIS Intersect?

MTD and CIS are closely related because the shift to digital tax reporting under MTD for contractors will also affect those working under the CIS scheme. With MTD for VAT, contractors and subcontractors will need to digitally file their VAT returns and submit payments quarterly, instead of annually.

In summary, contractors who are required to comply with CIS will also need to ensure they are fully compliant with MTD. This will impact how they manage VAT, income tax, and CIS tax returns.

Why Do We Need MTD?

MTD is being introduced to improve the efficiency of the UK’s tax system. It’s designed to reduce errors and ensure that tax filings are up to date. By moving to digital reporting, both businesses and HMRC can access more accurate data in less time.

What Sort of Software Is Needed?

For MTD compliance, contractors will need to use HMRC approved MTD software. This software will help manage and submit quarterly tax returns and ensure that all financial data is filed correctly with HMRC.

Choose software that integrates seamlessly with your financial records and supports VAT, income tax, and corporation tax submissions.

Benefits of MTD for Construction Businesses

Making Tax Digital (MTD) offers several benefits for CIS businesses. Here’s how embracing MTD can improve the way construction businesses manage their taxes:

1. Streamlined Tax Reporting

With quarterly tax submissions, construction businesses can keep their tax filings up to date throughout the year. This reduces the year-end scramble to gather documents and ensures that businesses are always on top of their tax liabilities, making it easier to manage cash flow.

2. Reduced Risk of Errors

Manual record-keeping and paper submissions can lead to mistakes and missed deductions. By using digital record-keeping, businesses can reduce human error and ensure that all data is accurately recorded and submitted. This not only saves time but also helps avoid penalties due to mistakes.

3. Improved Transparency

MTD allows real-time tax reporting, which means that construction businesses can instantly see their tax position at any given time. This level of transparency helps businesses stay informed and better plan their finances, making it easier to spot potential issues before they become problems.

4. Better Cash Flow Management

With the introduction of quarterly tax returns, businesses will be regularly updating their tax records. This means businesses won’t face a large tax bill at the end of the year which could put a strain on cash flow. Instead, smaller, more manageable payments can be made throughout the year, helping to keep the finances in check.

5. Time-Saving Automation

Adopting HMRC-approved MTD software can automate many of the processes that were once time-consuming. From generating tax returns to tracking CIS deductions, automation saves businesses time, allowing them to focus on their core operations rather than worrying about tax deadlines and paperwork.

Challenges for CIS Businesses Under MTD

Adopting Making Tax Digital (MTD) can bring some challenges for CIS businesses, especially as it requires significant changes to how tax is reported. Here are some key challenges contractors might face:

1. Adapting to Quarterly Submissions

Under MTD, CIS contractors will have to submit quarterly tax returns, which means more frequent reporting compared to the traditional annual system. This can be time-consuming and challenging for businesses that are used to a once-a-year tax filing.

2. Managing Digital Record Keeping

One of the most significant changes with MTD is the requirement for digital record-keeping. CIS businesses will need to maintain accurate, up-to-date digital records of all transactions, including CIS deductions. For many businesses, this will mean investing in new HMRC-approved MTD software and possibly changing their entire bookkeeping system.

3. Integration with Existing Systems

Construction businesses often rely on bespoke accounting systems or spreadsheets. Integrating these systems with the new MTD requirements can be complex, requiring updates or even a complete system overhaul to ensure everything complies with MTD.

4. Training and Knowledge Gaps

Many CIS contractors and subcontractors may not be familiar with the digital tools required for MTD compliance. This means businesses will need to invest time and money into training their staff or hiring external experts to help navigate the transition.

5. Staying On Top of Deadline

With quarterly tax submissions now mandatory, CIS businesses will need to ensure they stay on top of deadlines to avoid penalties. This can be especially tricky for businesses with fluctuating cash flow or seasonal work, as getting everything in order every three months can be a challenge.

When Is MTD Being Implemented?

Making Tax Digital (MTD) was first introduced in April 2019 for VAT-registered businesses, with all qualifying businesses required to join by April 2022. Now, the focus moves to Income Tax Self-Assessment (ITSA), with MTD for Income Tax launching in phases starting 6 April 2026.

The first phase will apply to sole traders and landlords with a combined income from self-employment and property exceeding £50,000. Future phases will gradually lower the income threshold:

  • 6 April 2027: For income over £30,000
  • 6 April 2028: For income over £20,000

These phased changes are designed to help businesses transition smoothly to digital tax reporting.

It’s important to note that MTD for Income Tax is mandatory for those meeting the income thresholds but voluntary participation is encouraged for those below these thresholds. Eligible individuals are encouraged to sign up early to familiarize themselves with the new system and receive support from HMRC’s Customer Support Team. 

To prepare, contractors should adopt HMRC approved MTD software, maintain digital records, and stay informed about the specific deadlines applicable to their income levels. This proactive approach will facilitate a smoother transition and ensure compliance with the upcoming requirements.

How To Comply With MTD As A Contractor

Complying with MTD for contractors in 2025 doesn’t have to be overwhelming. With the right tools, contractors can easily adapt to the new system. Here’s a simple guide on how to meet the MTD requirements:

1. Choose the Right MTD Software

The first step is to choose the right accounting software for MTD. This software should be compatible with HMRC’s systems, ensuring that all data can be transmitted automatically. Make sure you select HMRC approved MTD software, as non-compliant software will not be accepted.

2. Keep Digital Records

You must digitise your financial records. This includes receipts, invoices and all other documents related to your business activities. You must ensure that these records are stored in a digital format that is compatible with MTD.

3. Submit Quarterly Tax Returns

Instead of filing once a year, contractors must now submit quarterly tax submissions. This will include information about your income, expenses, and VAT where applicable. Make sure your contractor bookkeeping compliance is up to date so that these quarterly returns are accurate and submitted on time.

4. Stay On Top of MTD Deadlines 2025

MTD deadlines 2025 are crucial to avoid penalties. Late submissions or inaccurate filings can result in fines. Make sure you are well aware of the deadlines for quarterly tax submissions and ensure you have the systems in place to meet them.

Who Will Need to Use Making Tax Digital for Income Tax?

By 2025, contractors who are self-employed or operate as sole traders will be required to use MTD for Income Tax Self-Assessment (ITSA). This means submitting quarterly income and expense details to HMRC, instead of just filing one annual tax return.

Who Will Not Need to Use Making Tax Digital for Income Tax?

Not all contractors will need to use MTD for Income Tax. If you are not registered as self-employed or if your income is below a certain threshold (currently £10,000), you may be exempt from MTD for Income Tax Self-Assessment (ITSA). Contractors operating as limited companies with income below the VAT threshold or those who qualify for other exemptions, may also be excluded from MTD obligations.

MTD Implementation Timeline and Phases

MTD will be rolled out over several years, with specific deadlines for each sector. Contractors should be aware of the following key phases:

Phase 1: April 2026

If a business is trading by 5 April 2025, it will need to comply with MTD for income tax from 6 April 2026 if its turnover exceeds £50,000 in the 2024/25 tax year. The decision will be based on the 2024/25 tax return, which must be filed by 31 January 2026.

Phase 2: April 2027

The requirement extends to those with an annual gross income over £30,000.

MTD Impacts CIS Contractors and Subcontractors

For those under the CIS scheme, MTD compliance UK will require a change in how tax returns are filed and reported. Subcontractors under CIS will need to ensure that their CIS tax returns align with MTD guidelines and contractors will need to submit quarterly tax filings that include information about their CIS deductions.

This means that digital tools will play a central role in ensuring that all tax details are transmitted to HMRC on time and accurately.

MTD Preparation: What Steps Should Contractors Be Taking Now?

As the MTD deadline draws closer, contractors should begin preparing by:

  • Adopting the right software: Ensure you are using HMRC approved MTD software for your tax submissions.
  • Digital record keeping: Begin maintaining digital records of all business transactions, from income to expenses.
  • Stay on top of deadlines: Familiarise yourself with the MTD deadlines 2025 to avoid penalties for late submissions.
  • Train staff: If you have employees or subcontractors, make sure they are prepared for the switch to digital tax reporting.

What’s Changing from April 2026?

From April 2026, Making Tax Digital for Income Tax Self Assessment (MTD for ITSA) will be mandatory for self-employed individuals and landlords with an annual business or property income over £50,000. This will require digital record-keeping of income and expenses and the use of MTD-compatible software to submit quarterly updates to HMRC. The changes do not include mandatory digital reporting for VAT (unless the business is already VAT-registered) or for corporation tax (which will be introduced later).

How Will This Affect CIS Tax Returns?

CIS contractors will need to adjust how they manage and report their tax returns, making sure CIS tax deductions are recorded digitally and accurately submitted. Quarterly submissions under MTD will require contractors to ensure their CIS tax returns are included in these reports, reducing errors and improving compliance.

What Happens If You Don’t Follow MTD?

Failure to comply with MTD compliance UK can result in fines and penalties from HMRC. Missing quarterly tax submissions or failing to use approved software can lead to delays in tax assessments and potential financial penalties. For CIS contractors, it is essential to stay on top of MTD requirements to avoid any disruptions to your business operations.

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The Bottom Line

The shift towards Making Tax Digital (MTD) is a significant change for contractors in the UK. With MTD deadlines 2025 fast approaching, contractors must prepare by adopting HMRC approved MTD software, maintaining accurate digital record-keeping for contractors, and ensuring compliance with quarterly tax submissions.

Disclaimer: This article provides general information about Making Tax Digital (MTD) for contractors and CIS.

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