Managing High UK Tax Bills

Managing High UK Tax Bills
Charlotte Baroukh

Charlotte Baroukh

Tax Expert @ Pie

3 min read

Updated: 17 Mar 2025

3 min read

Updated: 17 Mar 2025

Understanding Your UK Tax Bill

Understanding your UK tax bill can be overwhelming, especially when it seems unusually high. There are numerous factors that can contribute to an inflated tax bill, and being informed about these can help you tackle it more effectively. This article aims to break down these reasons and provide practical solutions.


A high tax bill may stem from several aspects like incorrect tax codes, additional income from self-employment, or changes in personal allowances. Sometimes, even errors made by HMRC can lead to larger-than-expected tax demands. Let’s explore these elements to give you a clearer picture of what might be going on with your tax bill.


We will also discuss how using digital tools and seeking expert assistance can help you manage and potentially reduce your tax liabilities.

Incorrect Tax Codes

One common culprit for an inflated tax bill is an incorrect tax code. HMRC assigns a tax code based on your estimated income and personal circumstances. If this code is wrong, you might be paying more tax than necessary. Reviewing your tax code and correcting any discrepancies can substantially lower your tax bill.


Another point to consider is whether your tax code includes adjustments for underpayments from previous years. These adjustments can often lead to a higher tax bill if not accurately reflected in your earnings.

Additional Income

Earning additional income outside of your primary job can significantly impact your tax bill. This includes freelance work, rental income, or even investments. Each of these revenue streams has its own tax implications and may push you into a higher tax bracket.


Properly reporting and managing this extra income is crucial. Utilising financial management tools or professional tax services can help ensure all your earnings are accounted for correctly and any allowable expenses are deducted, thus minimising your tax bill.

<h5><br></h5><h5>Recent Tax Stats</h5><p>Recent statistics show that nearly <strong>15%</strong> of UK taxpayers have faced higher tax bills due to incorrect tax codes or secondary incomes. Another <strong>10%</strong> of taxpayers had their taxes adjusted because of HMRC errors from previous years.</p>


Recent Tax Stats

Recent statistics show that nearly 15% of UK taxpayers have faced higher tax bills due to incorrect tax codes or secondary incomes. Another 10% of taxpayers had their taxes adjusted because of HMRC errors from previous years.

<h5><br></h5><h5>Impact of HMRC Mistakes</h5><p>Almost <strong>1 in 10</strong> UK taxpayers find their tax bill increased due to HMRC errors. Correcting these errors promptly is crucial for avoiding extra charges. Moreover, <strong>25%</strong> of cases with erroneous tax codes led to refunds upon reassessment.</p>


Impact of HMRC Mistakes

Almost 1 in 10 UK taxpayers find their tax bill increased due to HMRC errors. Correcting these errors promptly is crucial for avoiding extra charges. Moreover, 25% of cases with erroneous tax codes led to refunds upon reassessment.

HMRC Errors

Errors by HMRC can also contribute to unexpected tax bills. This could be due to administrative errors, incorrect data, or miscalculations. If you suspect an error, it’s essential to contact HMRC immediately to rectify the issue.


Such errors may come from overestimated income or underreported allowances. It's advisable to maintain thorough records and regularly review your tax statements. Financial management tools can be instrumental in tracking and correcting these discrepancies.

Changes in Personal Allowances

Changes in personal allowances, such as the increase or decrease in your tax-free amount, can impact your tax bill. If your circumstances change, such as getting married or having dependents, it can alter your allowances and tax obligations.


It's crucial to update your information with HMRC to reflect these changes. Additionally, consulting with expert tax assistants available on the Pie app can ensure you’re maximising your allowances and not overpaying in tax.

Tips to Lower Your Tax Bill

<h6>Review Your Tax Code Regularly</h6><p>Regularly review your tax code to ensure it accurately reflects your earnings and personal circumstances. An incorrect tax code can mean you're paying too much or too little tax.</p>

Review Your Tax Code Regularly

Regularly review your tax code to ensure it accurately reflects your earnings and personal circumstances. An incorrect tax code can mean you're paying too much or too little tax.

<h6>Keep Accurate Financial Records</h6><p>Keep meticulous records of all your income and deductible expenses. Proper documentation can make a significant difference in reducing your tax bill when filing returns.</p>

Keep Accurate Financial Records

Keep meticulous records of all your income and deductible expenses. Proper documentation can make a significant difference in reducing your tax bill when filing returns.

<h6>Consult Experts for Guidance</h6><p>Consult experts if needed. Professional tax services can provide advice tailored to your situation, ensuring you don’t miss out on any tax-saving opportunities.</p>

Consult Experts for Guidance

Consult experts if needed. Professional tax services can provide advice tailored to your situation, ensuring you don’t miss out on any tax-saving opportunities.

Surprising Fact About Tax

Did you know that approximately 90% of taxpayers in the UK use digital tools and apps to manage their taxes for accuracy and convenience?

What to Do About High Tax Bills

When faced with a high tax bill, the first step is to review the breakdown provided by HMRC to understand the components leading to the total figure. This can help in identifying exact areas where adjustments might be needed.


Next, take action by reviewing past payments, verifying income sources, and seeking out allowances and deductions that might have been missed. Expert tax services can be invaluable here, offering the guidance needed to address and potentially reduce your tax obligations.

<h5><br></h5><h5>Review HMRC Statements</h5><p>Accurately reviewing HMRC statements can highlight discrepancies. Comparing these statements with your records can reveal overestimations or other errors. Keep all pertinent documents handy.</p>
<h5><br></h5><h5>Review HMRC Statements</h5><p>Accurately reviewing HMRC statements can highlight discrepancies. Comparing these statements with your records can reveal overestimations or other errors. Keep all pertinent documents handy.</p>


Review HMRC Statements

Accurately reviewing HMRC statements can highlight discrepancies. Comparing these statements with your records can reveal overestimations or other errors. Keep all pertinent documents handy.

<h5><br></h5><h5>Verify Income Sources</h5><p>Accurately tracing and reporting all your income sources, including secondary earnings, can help to determine areas where tax has been over or underpaid. Financial tools and professional assistance can streamline this process, ensuring completeness and accuracy.</p>
<h5><br></h5><h5>Verify Income Sources</h5><p>Accurately tracing and reporting all your income sources, including secondary earnings, can help to determine areas where tax has been over or underpaid. Financial tools and professional assistance can streamline this process, ensuring completeness and accuracy.</p>


Verify Income Sources

Accurately tracing and reporting all your income sources, including secondary earnings, can help to determine areas where tax has been over or underpaid. Financial tools and professional assistance can streamline this process, ensuring completeness and accuracy.

Summary

High tax bills can often be attributed to errors in tax codes, additional income, HMRC mistakes, or changes in allowances. By understanding and investigating the root causes, you can take significant steps to manage and potentially reduce your tax liabilities. Using digital tools like the Pie Tax App, along with seeking advice from expert tax assistants available on the Pie app, can simplify this process, ensuring you’re not overpaying. In conclusion, always keep your tax information up-to-date and consult experts when needed to avoid unexpected tax demands. The Pie Tax App is completely free to use, find out what features are included here:

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Frequently Asked Questions

How can I check if my tax code is correct?

Your tax code is listed on your payslip, P60, and P45. You can verify its accuracy through HMRC's official website or by consulting with a tax professional.

What should I do if I think HMRC has made an error?

Contact HMRC immediately and provide them with any supporting documentation. Keeping accurate tax records can help present your case clearly during the review process.

How does additional income affect my tax bill?

Additional income can push you into a higher tax bracket, increasing your tax liability. Reporting extra earnings correctly and managing deductions is key to effectively managing this impact.

What are personal allowances, and how do they affect my tax bill?

Personal allowances reduce the amount of income that is taxed. Changes in your personal circumstances can alter these allowances, affecting your tax obligations.

Can the Pie Tax App help reduce my tax bill?

Absolutely! The Pie Tax App helps you track income, identify deductions, correct errors, and provides access to expert tax assistants who can guide you on reducing your tax liabilities.

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