How Good Bookkeeping Helps Small Businesses and Tradesmen Stay MTD Compliant?

Making Tax Digital for Income Tax is no longer something that is coming in the future. It is now mandatory for many sole traders and landlords.

From 6 April 2026, sole traders and landlords must use Making Tax Digital for Income Tax if their total qualifying income from self-employment and property exceeded £50,000 in the 2024/25 tax year.

For plumbers, electricians, builders, decorators and other tradespeople, this represents a significant change. Many self-employed people are accustomed to organising their records once a year, often shortly before the Self Assessment deadline. Making Tax Digital requires financial records to be maintained digitally throughout the year, with quarterly updates sent to HMRC through compatible software.

Good bookkeeping is one of the most effective ways to meet these obligations without allowing financial administration to take over your evenings and weekends. This guide explains what Making Tax Digital means for tradespeople, what you need to do and how professional bookkeeping support can make the process more manageable.

Making Tax Digital for Income Tax: Quick Facts

• It became mandatory from 6 April 2026 for qualifying income over £50,000.
• It becomes mandatory from 6 April 2027 for qualifying income over £30,000.
• It becomes mandatory from 6 April 2028 for qualifying income over £20,000.
• Qualifying income means gross income from self-employment and property before expenses are deducted.
• You must maintain digital records using software that works with Making Tax Digital for Income Tax.
• You must send quarterly summaries of your income and expenses to HMRC.
• Quarterly updates are not tax returns and do not create four separate tax bills.
• You must still submit an annual tax return through compatible software.
• Your tax return and balancing payment remain due by 31 January following the end of the tax year.
• Payments on account may also be due on 31 January and 31 July, depending on your circumstances.

What Is Making Tax Digital for Income Tax?

Making Tax Digital for Income Tax is HMRC’s system for digital record-keeping and reporting by sole traders and landlords.

If you fall within the rules, you or an authorised agent must use compatible software to:

• Create, store and correct digital records of your self-employment and property income and expenses.
• Send quarterly summaries of your income and expenses to HMRC.
• Add any other reportable income and make necessary year-end adjustments.
• Submit your annual tax return by 31 January following the end of the tax year.

The system is sometimes referred to as MTD for ITSA, although HMRC now generally calls it Making Tax Digital for Income Tax.

Who Is Affected?

The rules apply to qualifying individuals with income from self-employment or property. They do not currently apply to limited companies through Making Tax Digital for Income Tax.

An individual’s share of partnership profit is not included when calculating qualifying income. However, separate income from a sole trader business or property may still count.

What Counts as Qualifying Income?

Qualifying income is your total gross income from self-employment and property before expenses are deducted. HMRC uses the relevant figures reported on your previous Self Assessment tax return.

For example, if a self-employed plumber recorded £55,000 of gross business income before expenses in 2024/25, Making Tax Digital would normally apply from 6 April 2026, even if their taxable profit was considerably lower.

If you have more than one source of self-employment or property income, the relevant gross amounts are added together when determining whether you exceed the threshold.

Quarterly Updates Are Not Tax Returns

Quarterly updates are summaries of the income and expenses recorded in your software. They are not complete tax returns and they do not mean that tax must be paid every quarter.

You must still review your figures, make any necessary adjustments, include other relevant income and submit an annual tax return through compatible software.

Making Tax Digital Quarterly Deadlines

The quarterly update deadlines are the same whether you use standard tax-year update periods or calendar update periods:

Quarterly Update	Submission Deadline
First quarterly update	7 August
Second quarterly update	7 November
Third quarterly update	7 February
Fourth quarterly update	7 May

For businesses entering Making Tax Digital on 6 April 2026, the first quarterly update deadline is 7 August 2026.

The Self Assessment return for the 2025/26 tax year must still be submitted through the usual process by 31 January 2027. The first annual tax return submitted through Making Tax Digital software will cover the 2026/27 tax year and will be due by 31 January 2028.

Why Tradespeople Can Find MTD Particularly Difficult

Plumbers, builders, electricians, roofers, groundworkers, decorators and other tradespeople face several practical challenges that can make digital record-keeping more difficult than it is for many office-based businesses.

Different Payment Methods Are Harder to Track

Tradespeople may receive payments by bank transfer, card, cash or through online payment platforms. Without a consistent process for recording every source of income, payments can be missed or recorded in the wrong period.

Bank feeds can automate part of the process, but they do not remove the need to identify, categorise and check each transaction.

CIS Creates Additional Record-Keeping

If you work under the Construction Industry Scheme, payments may reach your bank account after CIS deductions have already been taken.

Your bookkeeping must distinguish between:

• Your gross income before CIS deductions.
• The amount deducted by the contractor.
• The net payment received into your bank account.

Your qualifying income for Making Tax Digital is based on gross income rather than the net payment that reaches your account.

For example, a subcontractor receiving £42,000 after deductions could have gross income above £50,000 and may therefore fall within Making Tax Digital from April 2026.

Business and Personal Spending Can Become Mixed

Mixing personal and business transactions is a common bookkeeping problem for sole traders.

Although a sole trader is not legally required to have a separate business bank account, using one can make record-keeping considerably easier. It reduces the number of personal transactions that must be reviewed and helps create a clearer audit trail.

There Is Limited Time for Administration

Tradespeople are often working on site during normal office hours. Evenings and weekends may already be taken up by quotations, ordering materials, scheduling work and communicating with customers.

Keeping financial records up to date every week can therefore be difficult, particularly when administration does not directly generate income. This is where a professional bookkeeping service can provide substantial practical value.

How Good Bookkeeping Supports MTD Compliance

Good bookkeeping is not only about meeting HMRC requirements. It also gives you a clearer understanding of your income, expenses, tax position and cash flow.

1. Digital Records That Are Ready for Submission

Making Tax Digital requires relevant income and expense records to be created and stored digitally using compatible software.

A digital record generally needs to include:

• The amount of the income or expense.
• The date the income was received or the expense was incurred.
• The appropriate income or expense category.

Receipts, invoices, bank statements and other supporting documents must also continue to be retained.

A spreadsheet can form part of an MTD system, but the records must be digitally linked to compatible submission software where more than one product is used. Re-entering totals manually between separate systems may not meet the digital-link requirements.

Carter Bookkeeping Services Limited works with Xero, QuickBooks and other suitable platforms to keep client records organised throughout the year.

2. Quarterly Updates Prepared Accurately and on Time

Quarterly updates are much easier to prepare when income and expenses have been recorded consistently throughout the period.

Waiting until the quarterly deadline to process three months of receipts, invoices and bank transactions creates unnecessary pressure and increases the risk of mistakes.

Subject to the appropriate HMRC authorisation, a bookkeeper or tax agent can maintain your records, prepare the quarterly figures and make submissions on your behalf.

3. CIS Income and Deductions Recorded Separately

For CIS subcontractors, accurate bookkeeping ensures that gross income, CIS deductions and net payments are not confused.

The gross income must be reflected correctly in your records, while deductions suffered need to be tracked so that they can be included through the appropriate tax process.

Subcontractors may be entitled to a repayment where CIS deductions exceed their final tax liability, but this can only be established accurately when complete deduction statements and income records are available.

4. Allowable Business Expenses Recorded Properly

Good bookkeeping helps ensure that legitimate business expenses are not overlooked. It also prevents personal or disallowable costs from being claimed incorrectly.

Common expense categories for tradespeople can include:

• Tools and equipment used for the trade.
• Protective clothing and specialist workwear that is not suitable for ordinary everyday use.
• Materials and consumables purchased for client work.
• Qualifying vehicle and business travel costs.
• Public liability, professional indemnity and tool insurance.
• The business proportion of mobile phone and broadband costs.
• Advertising, website and marketing costs.
• Accountancy and bookkeeping fees.
• Relevant professional memberships and certifications.
• Training that updates or develops skills used in the existing trade.

An expense is not automatically allowable simply because it appears in the business bank account. It must satisfy the relevant tax rules and should be supported by appropriate records.

5. Better Visibility Over Cash Flow

Regular bookkeeping gives you more frequent opportunities to review the financial health of the business.

Accurate records can help answer questions such as:

• Is current income higher or lower than the same period last year?
• Are material and subcontractor costs increasing?
• Which customers still owe money?
• Is enough cash being retained for tax and VAT payments?
• Which types of work are producing the strongest margins?

This turns bookkeeping from a compliance exercise into a useful source of information for managing the business.

Choosing MTD-Compatible Software

You must use software recognised by HMRC as compatible with Making Tax Digital for Income Tax. HMRC does not recommend a particular provider, so you should choose a system that suits your business and supports all the tasks you need to complete.

Useful features for tradespeople can include:

• Making Tax Digital quarterly update submissions.
• Digital income and expense records.
• Bank feed integration.
• Mobile receipt capture.
• Customer quotations and invoicing.
• CIS recording where required.
• VAT return functionality for VAT-registered businesses.
• The ability to complete and submit the annual tax return.

Xero

Xero is a cloud-based accounting platform offering bank feeds, invoicing, expense recording, reporting and VAT functionality. Carter Bookkeeping Services Limited has certified Xero advisers.

QuickBooks

QuickBooks is commonly used by sole traders and small businesses. It provides tools for invoicing, expense recording, bank reconciliation and financial reporting.

FreeAgent

FreeAgent is designed around freelancers, contractors and small businesses. Eligible customers of certain banks may be able to access it as part of their business banking package.

The most important consideration is not simply which platform you choose, but whether it meets all your reporting requirements and is used consistently.

Incorrect VAT settings, unsuitable transaction categories and poorly configured bank rules can create inaccurate reports and substantial correction work. Carter Bookkeeping Services Limited provides accounting software setup and support to help businesses establish a reliable system from the beginning.

What Happens If You Miss an MTD Deadline?

There are no late submission penalties for missing quarterly update deadlines during the 2026/27 tax year. However, you must still maintain digital records and send the required quarterly updates before you can submit your annual tax return.

The exemption from penalties applies only to quarterly updates for the first mandatory year. It does not remove the requirement to submit them, and the normal rules for late tax returns and late tax payments still apply.

For quarterly updates after the 2026/27 tax year, the late submission system is points based.

• A missed applicable submission deadline results in one penalty point.
• The penalty threshold is four points.
• Reaching the threshold results in a £200 penalty.
• Each further missed deadline while at the threshold can result in another £200 penalty.

Late payment penalties and interest can also apply where tax remains unpaid after the relevant deadline.

MTD Action Plan for Sole Traders and Tradespeople

1. Check your qualifying income. Review the gross self-employment and property income reported on your relevant tax return.
2. Confirm when MTD applies. Income over £50,000 brings you within the rules from April 2026, over £30,000 from April 2027 and over £20,000 from April 2028.
3. Choose compatible software. Check that it supports your income sources, quarterly updates and annual tax return.
4. Set up your records correctly. Create suitable income and expense categories, connect bank feeds and establish a process for capturing receipts.
5. Sign up for MTD. Do not assume HMRC will register you automatically. You remain responsible for checking whether you must join.
6. Authorise your agent where applicable. A bookkeeper or tax agent will require the appropriate authority before managing submissions for you.
7. Maintain your records throughout the quarter. Do not leave three months of transactions until the submission deadline.
8. Save the submission dates. The quarterly deadlines are 7 August, 7 November, 7 February and 7 May.

DIY Versus Outsourced Bookkeeping

Some sole traders will continue to manage their own records successfully. Others may find that the time, software and reporting requirements make outsourcing more practical.

DIY Bookkeeping	Outsourced Bookkeeping
You are responsible for recording and checking every transaction.	Your records are maintained and reviewed by an experienced bookkeeper.
You must monitor quarterly and annual deadlines.	Submission dates are monitored as part of the agreed service.
You must determine how expenses and CIS deductions should be recorded.	Transactions are categorised consistently and unusual items can be identified for review.
Evenings or weekends may be used for financial administration.	You have more time to concentrate on clients and paid work.
Errors may remain unnoticed until the end of the year.	Regular reconciliations can identify missing or duplicated transactions earlier.
Your accountant may need to spend additional time correcting the records.	Organised records can make year-end work more efficient.

The right choice depends on the complexity of your finances, your confidence with bookkeeping software and the value of the time you would otherwise spend managing the records yourself.

How Carter Bookkeeping Services Supports Tradespeople

Carter Bookkeeping Services Limited is a bookkeeping practice based in Harpenden, Hertfordshire. We are members of the Association of Accounting Technicians and have certified advisers for Xero and QuickBooks.

We work remotely with sole traders, limited companies, small businesses and tradespeople across London and the wider UK, including plumbers and electricians in London, builders in Manchester, electricians in Birmingham, roofers in Leeds and contractors in Bristol and beyond.

Our bookkeeping services for tradespeople include:

• Digital bookkeeping using appropriate cloud accounting software.
• Preparation and submission of quarterly Making Tax Digital updates.
• CIS income and deduction tracking.
• VAT return preparation and submission.
• Sole trader and partnership accounts and tax return support.
• Payroll management for businesses employing staff.
• Holistic bookkeeping reviews to identify problems and opportunities for improvement.
• Accounting software setup, onboarding and training.
• Year-round support rather than assistance only at Self Assessment time.

We work remotely with clients nationwide, making professional bookkeeping support accessible wherever your business is based.

Frequently Asked Questions

Do Sole Traders Need a Bookkeeper for MTD?

You are not legally required to appoint a bookkeeper. However, you are responsible for maintaining digital records, sending quarterly updates and submitting your annual tax return using compatible software.

A bookkeeper can manage much of this work on your behalf once the correct HMRC authority is in place.

Does CIS Income Count Towards the MTD Threshold?

Your gross self-employment income counts towards the Making Tax Digital threshold. This means CIS income must be considered before the deductions taken by the contractor.

If £48,000 reached your bank account after CIS deductions but your gross income exceeded £50,000, you may have been required to enter Making Tax Digital from April 2026.

Can a Bookkeeper Submit Quarterly Updates for Me?

Yes. Once properly authorised as your agent, a bookkeeper or tax professional can use compatible software to prepare and submit quarterly updates on your behalf.

You remain legally responsible for ensuring that the information supplied to HMRC is complete and accurate.

Will I Be Fined for Missing a Quarterly Update in 2026/27?

HMRC will not apply late submission penalties for quarterly updates relating to the 2026/27 tax year. You must still submit the updates before completing your annual tax return.

The penalty exemption does not apply to late annual tax returns or late tax payments.

How Much Does Bookkeeping Cost for a Sole Trader?

The cost depends on the volume of transactions, the frequency of the bookkeeping and whether you also need CIS, VAT, payroll, tax return or Making Tax Digital support.

Carter Bookkeeping Services Limited provides tailored quotations based on the work required, rather than charging every client for the same standard package.

What If My Income Is Below £50,000?

If your qualifying income did not exceed £50,000 for the relevant year, you may not have been required to join from April 2026.

However, the threshold falls to £30,000 from April 2027 and £20,000 from April 2028. Businesses approaching either threshold should prepare in advance rather than waiting until the reporting obligation begins.

Do Limited Companies Have to Use MTD for Income Tax?

No. Making Tax Digital for Income Tax applies to qualifying individuals with self-employment or property income. It does not currently apply to limited company income.

Limited companies have separate bookkeeping, accounts and Corporation Tax obligations and may still need to use Making Tax Digital for VAT if they are VAT registered.

Get Your Bookkeeping Ready for Making Tax Digital

Making Tax Digital requires a change from occasional year-end record-keeping to a consistent digital process throughout the year.

Tradespeople who establish that process early will find quarterly updates much easier to manage. Those who continue relying on incomplete spreadsheets, unrecorded cash payments and boxes of receipts may face substantial work every few months.

Carter Bookkeeping Services Limited offers a free initial review for sole traders and small businesses that want to understand their current position and prepare for Making Tax Digital.

Contact Carter Bookkeeping Services Limited

• Phone: 07903 364040
• Email: wendy@carterbookkeepingservices.co.uk
• Website: www.carterbookkeepingservices.com
• Location: Based in Harpenden, serving small businesses and tradespeople across London and the UK.