Year-End Accounts for UK Sole Traders — What Happens and What You Need to Prepare

What year-end accounts mean for a sole trader

Unlike limited companies, sole traders do not file statutory accounts with Companies House. Your year-end process results in:

1. A Profit and Loss account (income minus expenses = net profit)
2. A Self Assessment tax return — specifically the SA103 (self-employment supplementary pages) showing your business profit
3. A tax calculation — income tax plus Class 4 NIC on that profit, minus any payments on account already made

That's it. No balance sheet filing, no Companies House submission, no audit. The whole process is significantly simpler than for limited companies.

The UK tax year end

The sole trader tax year ends on 5 April each year. Your 2025/26 accounts cover income and expenses from 6 April 2025 to 5 April 2026.

If your business uses a different accounting period (some use 31 March or 31 December), transitional rules apply from 2024/25 onwards — the "basis period reform" now requires sole traders to align their profits with the tax year in some circumstances. Discuss this with your bookkeeper if your accounting period differs from 5 April.

What you (or your bookkeeper) need to prepare

The accounts preparation requires:

Income records:

• Total sales for the year — from invoices or Xero/QuickBooks P&L
• Any other business income

Expense records:

• Bank statement reconciled to 5 April
• All expense categories with totals
• Receipts or records supporting the figures (your bookkeeper will not check every receipt but may ask about unusual items)
• Mileage log totals for the year
• Home office calculation (flat rate or actual costs)
• Capital equipment purchased (for Annual Investment Allowance)

Other information:

• Any capital disposals (equipment sold during the year)
• Details of any private use of business assets
• Student loan repayments (if applicable — goes on the return)
• Pension contributions made (for tax relief)

What your accountant actually does

When you hand over clean, reconciled records from Xero or QuickBooks, a year-end for a sole trader with straightforward income typically takes 2-4 hours. Your accountant will:

1. Review your profit and loss
2. Make any necessary adjustments (capital allowances, private use adjustments, accruals if on traditional accounting)
3. Prepare the final tax computation
4. Complete and file the Self Assessment return
5. Advise on any planning opportunities before the deadline

Clean records = lower fees. An accountant charging £100-£150/hour working from a Xero export that reconciles to the bank takes far less time than one working from a bank statement and a box of receipts. The difference is often 2-4 hours of time.

Common year-end adjustments

Capital allowances: Equipment purchased during the year is not simply an expense in the P&L — it qualifies for capital allowances, typically the Annual Investment Allowance (100% in the year of purchase for most equipment). Your bookkeeper or accountant will ensure the correct claim is made.

Private use adjustments: If you use a car for both business and personal purposes, only the business proportion of car costs is deductible. Your mileage log determines the split.

Stock write-down: If you hold inventory and some has become obsolete, it can be written down to net realisable value.

Bad debts: Invoices that are genuinely irrecoverable can be written off as a bad debt expense.

Timing: when to start and what the deadline is

Start gathering records as soon as possible after 5 April. Most accountants are significantly busier in November-January as the 31 January deadline approaches. Bookings in May-September often result in faster turnaround and lower fees.

The 31 January 2027 deadline for 2025/26 tax returns is non-negotiable. A single day late triggers a £100 automatic penalty. Give your accountant at least 4-6 weeks to complete and review the work.

The benefit of clean monthly bookkeeping

If you have reconciled your accounts monthly throughout the year, your year-end is a confirmation rather than a reconstruction. Your bookkeeper runs the final reconciliation for April, exports the Profit and Loss, and the work is substantially done.

If you reconcile annually — in January — you are paying accountant fees to do what a bookkeeper should have done over 12 months, at crisis timescales, when the accountant is at their busiest. It costs more and produces worse results.