If you receive untaxed income — for example from self-employment, property, dividends, investments, or overseas sources — you may need to complete a Self Assessment tax return (SA100). We take care of the process end-to-end: gathering records, calculating your tax, claiming reliefs, and submitting to HMRC.
Whether this is your first return or you’ve left it late, our AAT AML-supervised team provides fast, accurate support. We also assist non-UK residents with UK tax obligations, landlords, directors, investors and clients with complex income sources.
Why Choose Accusolve for Self Assessment?
Avoid errors, reduce stress, and make the most of available allowances:
- Complete preparation and online filing to HMRC
- Accurate calculations across employment, self-employment, property & investments
- Reliefs and allowances optimised (incl. expenses, losses, pension & gift aid claims)
- Help with late returns, corrections & penalty mitigation
- Clear tax summaries and payment guidance
Self Assessment Tax Return Help for Freelancers, Directors and Landlords
- Sole traders, freelancers and contractors
- Company directors and shareholders
- Landlords, from single property owners to portfolios
- High-earners and those with multiple income streams
- Non-UK residents with UK tax obligations
- Investors with dividends, interest or capital gains
- Clients needing probate, estate or inheritance tax related tax return support
What Our Self Assessment Accountants Do
- Review of your tax position and HMRC registration where needed
- Preparation of SA100 plus required schedules such as SA102, SA103, SA105, SA106 and SA108
- Calculation of income tax, Class 2/4 NIC and payments on account
- Expense reviews and relief claims, including capital allowances, use of home, mileage, pensions and Gift Aid
- Submission to HMRC and confirmation
- Post-submission advice: payment dates, coding notices, refunds and next steps
Documents We Need to Prepare Your Tax Return
- P60, P45, P11D and employment income details
- Self-employment income, invoices, expenses and bank summaries
- Rental income, mortgage interest, agent statements and property expenses
- Dividend vouchers, bank interest, savings and investment income
- Pension contributions, Gift Aid, student loan and child benefit information
- Capital gains details, purchase/sale costs and relief information
- Overseas income and foreign tax details where relevant
Income Types We Handle
Our self assessment accountants support sole trader income, director salary and dividends, rental income, foreign income, savings and investments, capital gains, high income child benefit charge issues and multiple income streams. We also connect Self Assessment with UK source income for non-residents where needed.
Self Assessment Fees, Turnaround and Deadlines
We provide a fixed-fee quote after reviewing your income sources, schedules required and deadline position. Complexity can increase where there are rental portfolios, capital gains, foreign income, late filings, amended returns or incomplete records.
Late Self Assessment Returns and HMRC Penalty Help
If you missed a Self Assessment deadline, received an HMRC letter or need to file a tax return after the deadline, we can help bring records up to date, prepare the return, review penalties and explain payment options.
Tax Refunds and Reclaim Checks
We review whether expenses, reliefs, pension contributions, Gift Aid, CIS deductions or incorrect tax codes may have led to overpaid tax. Where a reclaim is available, we include the claim within the return or explain the next steps.
Benefits of Using a Self Assessment Accountant
Save time, reduce tax risk, and gain peace of mind:
- Avoid HMRC penalties for late or inaccurate returns
- Ensure all income sources are correctly reported
- Optimise allowances to avoid overpaying tax
- Clear guidance on payments, payments on account & refunds
Self Assessment FAQ's
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Who needs to file a Self Assessment tax return?
You may need to file if you’re self-employed, a company director, a landlord, receive dividends/interest above allowances, have foreign income, capital gains, or other untaxed income.
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What are the key Self Assessment deadlines?
Online returns are generally due by 31 January following the tax year end (5 April). Balancing payments and first payments on account are usually due on the same date.
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Can you help if I’ve missed the deadline or made mistakes before?
Yes. We correct previous returns, appeal penalties where appropriate, and bring your filings up to date while minimising further charges.
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What records do I need to provide for my return?
Typically: income and expense records, P60/P45/P11D if employed, bank interest or dividend statements, rental statements, pension and Gift Aid details, and any capital gains information.
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Do I need a self assessment accountant?
You can file your own return, but a self assessment accountant is useful where you have multiple income sources, rental income, capital gains, foreign income, director dividends, missed deadlines or uncertainty over allowable expenses and reliefs.
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Can non-UK residents need to file a UK Self Assessment return?
Yes. Non-UK residents may need to file where they have UK rental income, UK source income, UK directorship income, capital gains on UK property or an HMRC notice to file.
