Avoid expensive tax mistakes before the 5 April deadline. Key errors self employed individuals and business owners must avoid.
As the end of the tax year approaches, many taxpayers focus on meeting deadlines and submitting their Self Assessment tax return. However, small mistakes made before 5 April can lead to unnecessary tax payments or compliance issues with HMRC.
The good news is that most of these mistakes are avoidable with a bit of planning and awareness.
This guide highlights the most common year end tax mistakes and how you can avoid them.
Missing allowable expenses
One of the most common mistakes is failing to claim all allowable expenses.
If you are self employed or run a business, these expenses reduce your taxable profit. Missing even small costs throughout the year can add up and increase your tax bill.
Make sure you review all business expenses, including subscriptions, travel, and home working costs, before the tax year ends.
Not using your personal allowance fully
Your personal allowance is the amount of income you can earn before paying Income Tax.
If this allowance is not fully used, it may result in missed tax saving opportunities. This is particularly relevant for company directors or those with flexible income.
Review your income before 5 April to ensure you are making full use of available allowances.
Delaying income or expenses without planning
Some taxpayers try to delay income or bring forward expenses without fully understanding the impact.
While timing can affect your tax position, unplanned decisions can create confusion or even increase your liability.
It is important to take a balanced approach and ensure any changes align with your overall financial situation.
Poor record keeping
Incomplete or disorganised records can lead to errors in your Self Assessment and increase the risk of issues with HMRC.
Common problems include:
• Missing receipts
• Unclear expense records
• Mixing personal and business transactions
Keeping accurate and organised records throughout the year will make tax reporting much easier.
Forgetting capital allowances
Many businesses forget to claim capital allowances on equipment and assets.
If you have purchased tools, machinery, or office equipment, you may be able to reduce your taxable profits through these allowances.
Review any asset purchases before the end of the tax year to ensure you are claiming the relief you are entitled to.
Not reviewing salary and dividend strategy
For limited company directors, failing to review the balance between salary and dividends can result in paying more tax than necessary.
Each method of taking income has different tax implications, and the right mix depends on your individual circumstances.
Reviewing this before 5 April can help you optimise your take home income.
Leaving tax planning too late
One of the biggest mistakes is waiting until after the tax year ends to review your finances.
By then, many opportunities to reduce your tax bill may no longer be available.
Taking action before 5 April gives you more flexibility and control over your tax position.
How to stay on track before the deadline
Avoiding these mistakes does not require complex planning. A simple review of your finances before the tax year ends can make a significant difference.
You should aim to:
• Review income and expenses
• Check all allowable expenses are recorded
• Ensure records are accurate and complete
• Consider any planned purchases or income changes
These steps can help you stay compliant and reduce the risk of overpaying tax.
How professional support can help
Tax rules can be complex, and it is easy to overlook important details when managing everything yourself.
Professional support can help you identify missed opportunities, correct errors, and ensure your Self Assessment is accurate and compliant with HMRC requirements.
With the right guidance, you can approach the end of the tax year with confidence.