Making Tax Digital · Sole traders
Sole traders with a day job: handling PAYE salary alongside MTD
ONLY£15A MONTHHaving a salary and a sole trade creates two different threshold questions.
Having a salary and a sole trade creates two different threshold questions. PAYE salary is normally excluded from MTD qualifying income, but it still matters to the overall Income Tax calculation. Keeping those questions separate prevents both unnecessary registration worries and underestimated tax bills.
Check MTD using the right income
HMRC's qualifying-income guidance excludes employment income from the normal MTD threshold test. Add relevant self-employment and property income, not salary, to establish the qualifying total.
Quarterly updates cover the relevant business income and expenses. Salary is not inserted into the trade's turnover category. At annual completion, employment information must be included and checked, alongside other taxable income and gains.
One personal tax position
The Personal Allowance and tax bands apply across the relevant income, not independently to every source. A PAYE tax code is a collection mechanism and may not perfectly anticipate the sole-trade profit.
Keep P60 or other employment information and check tax deducted. HMRC may prepopulate information, but you should review it rather than assume an automatic sync is complete. Scotland has different bands for relevant non-savings income.
Worked example: salary does not trigger the threshold
Alex receives £45,000 salary and £18,000 gross trade income. The combined £63,000 is not the normal MTD qualifying-income total: the trade contributes £18,000 and salary is excluded.
If the trade has £6,000 allowable costs, £12,000 profit still enters the overall tax calculation. MTD eligibility and the amount of tax due are different decisions.
Treat a tax estimate as a forecast
A bookkeeping profit is not necessarily your final taxable income, and an estimated liability is not always the amount still to pay. Employment income, pensions, savings, reliefs, tax already deducted and payments on account can all affect the final position.
An estimate is most useful when you understand its coverage. Check whether it uses year-to-date figures or projects a full year, whether all income sources are included and whether adjustments are still outstanding. A strong summer followed by a quiet winter should not automatically be projected as twelve identical months.
HMRC explains that estimates after quarterly updates can be incomplete when other income is missing or accounting periods do not align with the tax year. Read the estimate guidance within quarterly reporting.
Use a reviewed forecast to inform a cash reserve, then compare it with actual HMRC liabilities and payment dates. If you transfer money into a tax savings account, that transfer is not a business expense. If an estimate changes sharply, investigate the records and assumptions before assuming that your tax position itself has changed by the same amount.
Where this fits into Making Tax Digital
For 2026/27, the first mandatory phase generally covers individuals whose combined qualifying self-employment and property income was more than £50,000 in 2024/25, subject to exemptions. Qualifying income normally means income before expenses. It is a different figure from taxable profit. Check the qualifying-income rules.
Once within MTD, keep the required digital records and send quarterly summaries for each relevant business. The summaries are cumulative from the start of the reporting year. They do not contain your entire personal tax position, and sending one does not itself create a quarterly tax-payment demand.
HMRC does not require accounting or tax adjustments before each quarterly update. Those adjustments and the other information needed for the annual return still have to be completed at the appropriate stage. Keep a review list so a matter deferred until year end is not forgotten. Read HMRC's quarterly-update guidance.
Software can organise the information, but the business facts remain essential. Review the figures you approve rather than assuming that a successful import has also settled every tax question.
Keep the evidence connected to the figures
Your digital record should explain the amount, date and nature of the transaction. Keep the invoice, receipt, statement or other evidence that supports it. A photograph can make a paper document easier to retain, but a folder of photographs alone does not create complete transaction records.
For sole traders, HMRC normally requires business records to be kept for at least five years after the relevant 31 January filing deadline. Keep them longer where the rules for a late return, enquiry or other circumstances require it. Check the record-retention guidance.
Make the records usable by your future self. Include a short explanation where a bank description is vague, retain the calculation behind a business-use split and make corrections traceable. For a missing receipt, try the supplier account, email confirmation or a replacement invoice before relying on incomplete evidence.
At review time, compare your records with the bank or payment account and investigate differences. Equal totals are useful, but two errors can cancel each other out. A sample of individual transactions can reveal a duplicated purchase or an omitted customer receipt that a totals-only check misses.
Review employment and business records together at year end
Keep salary and tax deducted separate from the business cashbook. Check personal income when reading estimates, and confirm annual-return software coverage. If there is rental income too, include it in the appropriate threshold and tax calculations.
Take the next step
Avona.app offers a self-service route from £15/month. Bring your records together, review the figures and choose a workflow that fits your business. For professional help, discuss the scope and total price of Avona Concierge, managed by chartered accountants, before choosing a service.