Trusted Self Assessment Accountant for UK Residents & Non-Residents
Ensure compliance, eliminate the hassle, and optimize your tax position.
Before
John, a freelance web developer, struggles with classifying income and deductions, leaving his self-assessment filing to the last minute, risking errors, missed deadlines, and potential penalties.
Result
Sterling & Wells simplifies his filing, ensures accurate deductions, and meets deadlines, eliminating stress and minimizing tax liability.
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Complex Tax Rules. Expert Solutions.
UK Self-Assessment filing can be overwhelming as missed deductions, misclassified income, and HMRC deadlines create unnecessary risk and penalties. Our expert Self Assessment accountant handles the complexity, so you don’t have to.
The End-to-End Self-Assessment Service
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Complete Income Review
All income streams analyzed and correctly classified
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Expense Optimization
Maximize eligible deductions to minimize tax liability
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Timely HMRC Filing
Submitted well ahead of deadline—no penalties, no stress
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Forward Tax Planning
Strategic guidance for next year's tax position by our self assessment accountants
Self-Assessment Important Deadlines
Tax deadlines come fast, and missing one can mean penalties. Sterling & Wells helps you stay ahead and avoid stress. Here are the key Self-Assessment dates for 2024–25.
| Description | Deadline |
|---|---|
| Register for Self-Assessment | 05 October 2025 |
| Paper Tax Return Deadline | 31 October 2025 |
| Online Tax Return Deadline | 31 January 2026 |
| Tax Payment Due | 31 January 2026 |
| Return Amendments Allowed Until | 31 January 2026 |
Do You Need to File a Self-Assessment?
If your income isn’t as simple as paycheck in, tax deducted, job done HMRC probably wants to hear from you. You’ll need a Self Assessment Accountant if you:
- Run your own business or operate as a sole trader
- Make over £1,000 from freelance or side-hustle income
- Earn rental income from UK property
- Share profits as part of a partnership
- Receive dividends, savings income, or investment returns
- Have foreign income of any kind
- Get paid earnings that aren’t already taxed like tips or commissions
And here’s the big change: from 2024/25, high earners on PAYE with no extra income are off the hook — no tax return needed.
Is This You?
If any apply, you likely need Self Assessment:
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Sole Traders & Business Partners
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Landlords & Property Income Earners
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Company Directors
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Dividend, Investment, or Capital Gains Income
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High Earners Claiming Child Benefit
Professional Expertise. Personal Service.
As professional Self Assessment Accountant, we provide the elevated level of service individuals with complex financial situations require.
- Chartered Advisors: Tax professionals with corporate-level rigor applied to your personal finances
- Global Expertise: UK residents with overseas income, and overseas clients with UK tax needs
- Optimization Focus: Not just compliance, we work to reduce your tax burden strategically
Meet the Experts Devoted to Your Success
Meet the Tax Advisors & Accountants at Sterling & Wells who make your growth and success their number one priority.
Self Assessment Highlights
Stay informed about Self Assessment updates. Keep up with the latest updates to ensure compliance and optimise your tax strategy.
Ready to Reclaim Your Time?
Stop wrestling with HMRC forms. Let our experts handle your Self-Assessment while you focus on what matters.
Frequently Asked Questions
Anyone who is self-employed, a company director, has income from property, or receives untaxed income such as dividends or foreign income will generally need to file a Self Assessment return.
You will need details of all your income, expenses, tax reliefs, and any other taxable benefits for the relevant tax year to ensure accurate reporting and compliance.
The deadline for online submission is usually 31 January following the end of the tax year on 5 April. Paper returns have an earlier deadline of 31 October.
We provide expert help with completing your tax return accurately and on time, ensuring all allowable expenses and reliefs are claimed to optimise your tax position.
Don't delay, contact us immediately. We will assess whether you have a reasonable excuse to appeal any penalties and work with HMRC to file your return and resolve any outstanding tax liability. The sooner we act, the better your position.