Making Tax Digital · Sole traders
Student loan repayments and MTD: how the annual calculation works
ONLY£15A MONTHA quarterly MTD update does not collect a new student-loan payment from your bank.
A quarterly MTD update does not collect a new student-loan payment from your bank. Student-loan repayments are worked out under the relevant plan rules, with the annual return bringing together information where you are self-employed or have mixed income. Your plan type matters.
Use the correct 2026/27 threshold
GOV.UK lists the current repayment thresholds:
| Plan | Annual threshold | Rate above threshold |
|---|---|---|
| Plan 1 | £26,900 | 9% |
| Plan 2 | £29,385 | 9% |
| Plan 4 | £33,795 | 9% |
| Plan 5 | £25,000 | 9% |
| Postgraduate loan | £21,000 | 6% |
These are repayment calculations, not loan-interest rates. Multiple plans and a postgraduate loan can interact, so do not add separate 9% charges for every undergraduate plan without checking the rules.
The annual calculation can include relevant income beyond trade profit. If repayments have already been deducted through PAYE, those deductions must be taken into account. Student-loan repayments are not ordinary business expenses that reduce trading profit.
Worked example: employment plus self-employment
Assume a Plan 2 borrower has £40,000 of income relevant to the annual repayment calculation. The excess over £29,385 is £10,615. At 9%, the indicative annual amount is £955.35 before the applicable calculation and rounding rules.
If £500 has already been deducted through employment, that is credited in determining the remaining amount. It is not a second deduction from business profit.
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.
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.
Keep the reporting dates separate from payment dates
The standard first update for 2026/27 covers 6 April to 5 July 2026 and was due by 7 August 2026. The second covers 6 April to 5 October 2026 and is due by 7 November 2026. The third and fourth deadlines are 7 February 2027 and 7 May 2027. These are cumulative updates, not four isolated sets of three-month totals.
Calendar periods have different cut-offs and the same filing deadlines. Check the setting for each business rather than assuming the dates from a bank statement. HMRC lists both reporting calendars.
The annual return for 2026/27 is due by 31 January 2028. The earlier 2025/26 return normally remains due online by 31 January 2027. Keeping those years distinct avoids a common transition-year misunderstanding.
Payments on account, where required, follow their own January and July timetable. An update acknowledgement confirms a reporting event; it does not confirm that an outstanding tax bill has been paid. Check your actual HMRC account and payment obligations separately from the software's progress indicators.
Check the annual information
Confirm the plan, repayment start position and PAYE deductions against the available records. HMRC may add loan information to the tax calculation, but you still need to check it. Keep forecasts separate from the amount actually assessed and paid.
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.