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Self Assessment — Guides, Tips & Expert Advice

Self assessment tax return guides, tips, and deadlines for UK sole traders and freelancers.

96 articles on Self Assessment

Self Assessment

Amended Self Assessment Returns: How to Correct Mistakes

Made an error on your Self Assessment return? You can amend it. Here is how and when to correct mistakes.

17 March 2026·2 min read
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Self Assessment

How to Claim Back Overpaid Tax via Self Assessment

If you have paid too much tax, HMRC owes you a refund. Here is how to check and claim it back through Self Assessment.

17 March 2026·2 min read
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Self Assessment

Do I Need to Do a Self Assessment Tax Return?

Not sure whether you need to file Self Assessment? Here is a quick check to work out your obligations.

17 March 2026·1 min read
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Self Assessment

How to Fill in Your Self Assessment Tax Return Online

A practical walkthrough of completing your Self Assessment tax return online, section by section.

17 March 2026·2 min read
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Self Assessment

How to Register for Self Assessment: Step by Step

A step-by-step guide to registering for Self Assessment with HMRC, from creating a Government Gateway account to receiving your UTR.

17 March 2026·2 min read
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Self Assessment

How to Reduce Your Self Assessment Tax Bill Legally

Practical, legal strategies to reduce your Self Assessment tax bill as a sole trader — from claiming every expense to pension contributions and allowances.

17 March 2026·4 min read
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Self Assessment

Self Assessment Balancing Payment Explained

The balancing payment is the difference between your actual tax liability and payments already made. Here is how it works.

17 March 2026·1 min read
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Self Assessment

Basis Period Reform and Self Assessment: What Changed

Basis period reform moved all sole traders to tax year reporting. Here is what changed and why it matters.

17 March 2026·1 min read
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Self Assessment

Budgeting for Your Self Assessment Tax Bill: The 30% Rule

The January tax bill catches many sole traders off guard. Here is how to budget throughout the year so tax day is stress-free.

17 March 2026·2 min read
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Self Assessment

Reporting Capital Gains on Your Self Assessment

If you have sold assets at a profit, you may need to report capital gains on your Self Assessment return.

17 March 2026·2 min read
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Self Assessment

Self Assessment and Charitable Donations: Gift Aid Claims

Gift Aid donations reduce your tax bill. Here is how to claim higher-rate relief through Self Assessment.

17 March 2026·2 min read
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Self Assessment

Can You Claim Childcare Costs on Self Assessment

Childcare is expensive, but can you claim it as a business expense? The short answer is no, but there are other ways to get help.

17 March 2026·2 min read
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Self Assessment — Guides, Tips & Expert Advice | Accounted Blog