Year-End Accounts Preparation: Complete Checklist

Preparing your year-end accounts does not have to be a stressful, last-minute scramble. With a clear checklist and a systematic approach, you can get everything done efficiently, minimise your tax bill, and avoid the penalties that come with late or inaccurate filing. Whether you prepare your own accounts or hand them over to an accountant, being organised makes the whole process faster, cheaper, and far less painful.

This guide gives you a step-by-step checklist covering everything from gathering your records to filing your self-assessment tax return. Print it out, bookmark it, or save it to your phone. Come year-end, you will thank yourself.

Step 1: Gather Your Income Records

The first step is to pull together a complete picture of all money that came into your business during the tax year (6 April to 5 April). This includes:

• All sales invoices issued during the year
• Bank statements for all business accounts, covering the full tax year
• Records of cash payments received
• Any other income such as grants, interest on business savings, compensation payments, or income from selling business assets
• Income from other sources if you have employment income, rental income, or investment income alongside your self-employment

Cross-reference your invoices against your bank statements to make sure everything matches. If you find payments that do not have a corresponding invoice, investigate and correct the discrepancy. If you use accounting software like Accounted, this reconciliation process is largely automated through bank feeds.

It is also important to identify any outstanding invoices, that is, work you have completed and invoiced but have not yet been paid for. If you use the accrual method of accounting, you will need to include this income in your accounts even though the cash has not arrived. If you use the cash basis, you only include income that has actually been received. For more on this distinction, see our guide on cash basis vs accrual accounting.

Step 2: Compile Your Expenses

Next, gather records of all business expenses you have incurred during the year. This is where thorough record keeping throughout the year pays off. You need:

• Receipts and invoices for all business purchases
• Bank and credit card statements showing business payments
• Mileage logs if you claim vehicle expenses
• Records of home office use if you work from home
• Records of any capital purchases such as equipment, vehicles, or machinery

Organise your expenses into the categories used on the self-assessment tax return. The main categories are:

| Category | Examples | |----------|---------| | Cost of goods sold | Materials, stock, direct costs | | Staff costs | Wages, employer NI, pensions | | Premises | Rent, rates, insurance, utilities | | General admin | Phone, stationery, postage | | Motor expenses | Fuel, insurance, repairs (or mileage) | | Travel and subsistence | Train fares, accommodation, meals on business trips | | Advertising and marketing | Website costs, advertising, business cards | | Professional fees | Accountancy, legal, professional memberships | | Finance charges | Bank charges, loan interest, card fees | | Other expenses | Anything else that is a legitimate business expense |

For each expense, make sure you have adequate evidence. HMRC does not require receipts for every single transaction, but they do expect you to have sufficient records to support your claims. As a general rule, keep receipts for anything over £10 and ensure your bank statements cover the rest.

If you are unsure about what you can claim, our comprehensive guide on tax deductions for sole traders covers every allowable expense in detail.

Step 3: Reconcile Your Bank Accounts

Bank reconciliation is the process of matching your accounting records against your bank statements to ensure they agree. This is one of the most important steps in year-end preparation because it catches errors, missing transactions, and duplicates.

For each business bank account and credit card:

1. Download or obtain statements for the full tax year
2. Compare each transaction on the statement against your accounting records
3. Identify and investigate any discrepancies
4. Record any transactions you have missed
5. Remove any duplicate entries

If you use cloud accounting software connected to your bank via open banking, much of this is done automatically. However, it is still worth reviewing the reconciliation manually to catch any transactions that have been incorrectly categorised or missed entirely.

Pay particular attention to:

• Transactions around the year-end date (5 April) that might belong to the previous or next tax year
• Transfers between your own accounts which should not be recorded as income or expenses
• Personal transactions that may have accidentally been made from your business account

Step 4: Review Capital Assets

If you have purchased any significant assets during the year, such as computers, vehicles, tools, machinery, or office furniture, you may be able to claim capital allowances rather than deducting the full cost as an expense.

For each capital asset:

• Record the date of purchase, the cost, and a description
• Determine whether it qualifies for the Annual Investment Allowance (AIA), which allows you to deduct the full cost in the year of purchase for qualifying assets up to the annual limit
• Consider whether any assets purchased in previous years need to have their value written down further

If you have sold or disposed of any business assets during the year, record the sale proceeds. You may have a capital gain or loss to report.

The rules around capital allowances can be complex, and the HMRC capital allowances guidance provides detailed information. If you use the cash basis of accounting, the rules are simpler as most capital expenditure is treated as a normal expense, with some exceptions for cars and certain other assets.

Step 5: Check Your VAT Position

If you are VAT registered, your year-end preparation needs to include a review of your VAT position:

• Ensure all VAT returns for the year have been filed and paid
• Check that your VAT records reconcile with your bank statements and accounting records
• Review your VAT registration status: if your turnover has fallen below the deregistration threshold, consider whether deregistering would benefit you
• If your turnover has exceeded the registration threshold and you are not yet registered, you need to register immediately

Even if you are not VAT registered, check whether your turnover for the year has exceeded or is approaching the VAT registration threshold (currently £90,000). If it has, you may need to register. Our guide on VAT registration explains when and how to register.

Step 6: Deal with Outstanding Debtors and Creditors

If you use accrual accounting, you need to account for money owed to you (debtors) and money you owe to others (creditors) at the year end.

Debtors: List all invoices that have been issued but not yet paid as at 5 April. These amounts will be included in your income even though you have not received the cash.

Creditors: List all bills and invoices you have received but not yet paid as at 5 April. These amounts can be included in your expenses even though you have not yet paid them.

Bad debts: If any of your debtors are unlikely to pay, you can write off the debt as a bad debt expense. You need to demonstrate that you have made reasonable efforts to collect the payment and that there is no realistic prospect of recovery.

Step 7: Calculate Your Profit

With your income and expenses compiled, reconciled, and categorised, you can now calculate your profit for the year:

Total income minus Total expenses minus Capital allowances equals Net profit

This net profit figure is the amount on which you will pay income tax and National Insurance contributions. Double-check the calculation carefully, as errors here flow directly through to your tax bill.

If you have made a loss, you may be able to carry it forward to offset against future profits, or in some cases carry it back against previous years' profits. The rules around loss relief can save you significant tax, so it is worth understanding your options.

Step 8: Gather Personal Tax Information

Your self-assessment tax return covers your entire financial picture, not just your self-employment income. Gather information about:

• Employment income: P60s and P11Ds from any employers
• Savings and investment income: Interest statements, dividend vouchers
• Rental income: If you are a landlord, your rental accounts
• Pension contributions: Records of any personal pension contributions you have made, which may qualify for tax relief
• Gift Aid donations: Records of charitable donations made under Gift Aid
• Student loan: Your plan type and any relevant details
• Child benefit: If you or your partner earn over £60,000, you may need to repay some or all of the High Income Child Benefit Charge

Step 9: Review Tax-Saving Opportunities

Before you finalise your accounts, review whether there are any last-minute tax-saving opportunities you have missed:

• Pension contributions: Personal pension contributions receive tax relief at your marginal rate. If you have not maximised your contributions, consider topping up before the year end.
• Capital allowances: Have you claimed all the capital allowances you are entitled to? Check whether any purchases qualify for the AIA.
• Working from home: If you work from home, have you claimed the appropriate proportion of your household costs? Even using the simplified flat-rate method, this can be worth several hundred pounds.
• Mileage claims: Have you recorded all your business mileage? At 45p per mile for the first 10,000 miles, these claims add up quickly.
• Professional subscriptions: Have you claimed for any professional body memberships, trade journals, or relevant subscriptions?

Our guide on how to pay less tax legally covers additional strategies that may be relevant to your situation.

Step 10: File Your Self-Assessment Tax Return

With all your information gathered and your accounts prepared, you are ready to file your self-assessment tax return. The key deadlines are:

• 5 October following the end of the tax year: deadline to register for self-assessment if this is your first year
• 31 October: deadline for paper tax returns (rarely used now)
• 31 January following the end of the tax year: deadline for online tax returns and payment of your tax bill

Filing early has several advantages. You find out sooner how much tax you owe, giving you more time to plan. If you are due a refund, you receive it sooner. And you avoid the stress and technical problems that come with the January deadline rush.

If you use Accounted, your year-end preparation is significantly simplified. Your income and expenses are already categorised, your bank accounts are reconciled, and your accounts can be prepared with minimal additional work. Penny can guide you through the process step by step, ensuring nothing is missed.

Step 11: Plan for the Year Ahead

Once your year-end accounts are complete, use the information to plan for the year ahead:

• Budget for your tax bill. Set up a standing order to save for next year's tax, based on your current year's liability. Our guide on direct debits and standing orders explains how to automate this.
• Review your pricing. If your profit margin is lower than expected, consider whether your prices need to increase.
• Identify areas for improvement. Were there expenses that could be reduced? Income streams that underperformed? Clients that were unprofitable?
• Set financial goals. Use your accounts as a baseline for setting revenue and profit targets for the coming year.

The Year-End Checklist at a Glance

Use this quick-reference checklist to make sure you have covered everything:

• [ ] All income recorded and reconciled
• [ ] All expenses recorded with supporting evidence
• [ ] Bank accounts fully reconciled
• [ ] Capital assets reviewed and capital allowances calculated
• [ ] VAT position checked
• [ ] Debtors and creditors listed (accrual basis)
• [ ] Bad debts identified and written off
• [ ] Profit calculated
• [ ] Personal tax information gathered
• [ ] Tax-saving opportunities reviewed
• [ ] Self-assessment tax return filed
• [ ] Tax bill paid
• [ ] Records archived securely
• [ ] Next year's tax savings plan set up

Year-end accounts preparation is one of those tasks that becomes much easier with practice and good habits throughout the year. The more organised you are from day one, the less work there is to do at year end. And with the right tools supporting you, what used to take days can now take hours.

Ready to make your next year end the easiest one yet? Sign up for Accounted and let Penny keep your books in order all year round. When April comes, your accounts will practically prepare themselves.

For further reading, the Low Incomes Tax Reform Group offers excellent free guidance on self-employment tax matters.

Useful Resources

• setting up as a sole trader
• government business finance support

Accounted keeps your books sorted automatically so you can focus on running your business. See Accounted →