Understanding Tax Arrears

Understanding Tax Arrears

Tax arrears refer to unpaid tax payments that are overdue to HM Revenue and Customs (HMRC). When you fail to pay the full amount of tax you owe by the deadline, the outstanding balance becomes tax arrears. This situation can arise with various types of taxes, including income tax, VAT, self-assessment, and others.

Tax arrears are a specific example of missed payments and arrears, which cover any debts that remain unpaid after their due date. In the context of tax, arrears can quickly lead to additional charges, interest, and enforcement action if not addressed promptly.

How Do Tax Arrears Occur?

There are several reasons why individuals or businesses might fall behind on their tax payments:

  • Cash flow problems: Unexpected expenses or a drop in income can make it difficult to pay tax bills on time.
  • Misunderstanding tax obligations: Some people are unaware of deadlines or the amount they owe, especially if their circumstances change.
  • Errors in tax returns: Mistakes in calculations or missing information can result in underpaid tax.
  • Delays in submitting returns: Missing filing deadlines can lead to estimated tax bills, which may be higher than expected.
  • Unexpected tax bills: Changes in employment, benefits, or business income can result in unexpected tax liabilities.

Types of Taxes That Can Lead to Arrears

Tax arrears can arise from several different types of taxes, including:

  • Income tax: If you are employed or receive a pension, your income tax is usually deducted automatically, but errors or changes in circumstances can still result in unpaid amounts. The rules for income tax are set out in the Income Tax (Earnings and Pensions) Act 2003.
  • Self-assessment tax: If you are self-employed or have other sources of income, you are responsible for calculating and paying your own tax. Missing a payment deadline can result in self-assessment arrears.
  • Value Added Tax (VAT): Businesses registered for VAT must submit returns and pay any VAT due on time. The legal framework for VAT is detailed in the Value Added Tax Act 1994.
  • Other taxes: Corporation tax, National Insurance contributions, and other HMRC-administered taxes can also lead to arrears if unpaid.

What Happens If You Owe Unpaid Tax to HMRC?

If you have tax arrears, HMRC will usually contact you to inform you about the outstanding amount and request payment. It is important not to ignore these communications. Initially, you may be given the opportunity to pay the debt in full or set up a payment plan. However, if the arrears remain unpaid, HMRC can take further action, such as:

  • Charging interest and penalties on the overdue amount
  • Collecting unpaid tax directly from your wages or bank account
  • Taking legal action to recover the debt, which could include court proceedings or insolvency action for businesses

HMRC has a range of powers to collect unpaid tax, so it is essential to act quickly if you find yourself in arrears. For more information about HMRC’s role and the support available, visit HM Revenue and Customs (HMRC).

Understanding your obligations and the potential consequences of unpaid tax can help you take the right steps to resolve any arrears and avoid further financial difficulties. If you are struggling to pay, it is always best to contact HMRC as soon as possible to discuss your options.

What Are Tax Arrears?

What Are Tax Arrears?

Tax arrears are amounts of tax that you owe to HM Revenue and Customs (HMRC) but have not yet paid. This can include unpaid Income Tax, National Insurance, VAT, Corporation Tax, or any other tax collected by HMRC. Tax arrears arise when you miss a payment deadline or pay less than the amount due on your tax bill.

How Do Tax Arrears Accumulate?

Tax arrears can build up in several ways. The most common reasons include:

  • Missing a payment deadline: If you do not pay your tax bill by the required date, the unpaid amount becomes arrears.
  • Underpaying your tax: If you pay less than the full amount you owe, the remaining balance is considered arrears.
  • Mistakes in tax returns: If HMRC later finds that you owe more than you originally declared, the additional amount will be treated as arrears.

For example, if you are self-employed and miss the deadline for your Self Assessment payment, the full outstanding amount becomes tax arrears. Similarly, if a business underpays its quarterly VAT bill, the unpaid portion becomes arrears.

Arrears vs. Penalties and Interest

It’s important to understand the difference between tax arrears and the extra charges that might be added. Tax arrears refer only to the unpaid tax itself. If you do not pay on time, HMRC may also charge:

  • Penalties: Fixed or percentage-based fines for late payment or late filing.
  • Interest: Daily interest on the amount you owe, calculated from the date payment was due until it is paid in full.

For example, if you owe £1,000 in tax and do not pay by the deadline, the £1,000 is your tax arrears. If HMRC adds a £100 late payment penalty and £10 in interest, you will owe a total of £1,110. The penalty and interest are separate from your original arrears.

Legal Rules and Guidance

HMRC has clear rules about when tax payments are due and what happens if you fall behind. The deadlines and penalties are set out in tax legislation such as the Finance Act 2009 and the Taxes Management Act 1970. HMRC is also required to follow specific procedures before taking enforcement action.

If you are struggling to pay your tax bill, it is important to contact HMRC as soon as possible. You may be able to arrange a payment plan or get more time to pay. For practical guidance on what to do if you are unable to pay your tax bill, visit HMRC. This official resource explains how you can contact HMRC, request more time, or set up instalments to manage your arrears.

Understanding tax arrears is the first step towards resolving them. Acting quickly and seeking help can prevent the situation from getting worse and reduce the risk of further penalties and interest being added.

Can I negotiate a payment plan with HMRC for my tax arrears?

Common Causes of Tax Arrears

Common Causes of Tax Arrears

Tax arrears – unpaid tax payments owed to HMRC – can arise for many reasons. Understanding the most common causes can help you recognise potential risks and take steps to avoid falling behind.

Unexpected Financial Difficulties

Life events such as job loss, illness, or redundancy can have a sudden impact on your income, making it hard to keep up with your tax obligations. If you find yourself unable to pay your tax bill due to redundancy or a significant drop in earnings, you are not alone. Many people in the UK face similar challenges each year. For more on what support is available if redundancy has affected your ability to pay tax, see our guide to redundancy and financial difficulties.

Errors in Tax Returns or Underestimating Tax Owed

Mistakes when completing tax returns are another common cause of arrears. This might include entering incorrect figures, misunderstanding allowable expenses, or failing to declare all sources of income. Even small errors can mean that you underpay tax without realising it, leading to an unexpected bill – and possibly penalties – later on. HMRC expects taxpayers to take reasonable care when filing returns. If you discover a mistake, it’s important to notify HMRC as soon as possible to minimise interest and penalties.

Delays in Filing Self-Assessment Returns

Missing the self-assessment deadline (usually 31 January each year for online returns) can trigger automatic penalties and interest on any unpaid tax. Delays may happen if you are unsure about your tax position, have difficulty gathering the necessary information, or simply forget the deadline. Late filing can quickly lead to tax arrears, even if you intended to pay on time.

Changes in Income or Business Circumstances

Your tax liability can change if your personal or business circumstances change during the year. For example, starting a new job, becoming self-employed, or experiencing a sudden increase in business profits can all affect the amount of tax you owe. If you do not update HMRC promptly or adjust your payments on account, you may end up with an unexpected shortfall. Similarly, if your business suffers a downturn and you cannot keep up with your tax instalments, arrears can build up over time.


If you are facing tax arrears, it is important to act quickly. Contacting HMRC early and seeking advice can help you find a manageable solution and avoid further penalties. Understanding the reasons behind your arrears is the first step towards resolving them and regaining control of your finances.

How can I arrange a payment plan with HMRC for my tax arrears?

Consequences of Falling Behind on Tax Payments

Falling behind on your tax payments can have serious consequences, both financially and legally. If you owe unpaid tax to HMRC, it’s important to understand what may happen next and how it could affect you.

How HMRC Responds to Unpaid Tax Debts

When you miss a tax payment, HMRC will usually contact you to remind you of the outstanding amount. If you do not respond or arrange payment, HMRC may escalate their response, starting with additional letters and moving on to more formal action. Their approach is designed to encourage you to pay what you owe, but if the debt remains unpaid, HMRC has a range of powers to recover the money.

To get a broader understanding of the consequences of missed payments and arrears, you can explore how similar situations are handled across different types of debts.

Interest and Penalties

One of the immediate consequences of tax arrears is the addition of interest and penalty charges. HMRC charges interest on unpaid tax from the date the payment was due until it is paid in full. The current interest rates are set by HMRC and can change, so it’s important to check the latest figures on the official HMRC website.

In addition to interest, HMRC can impose penalties for late payment or for failing to file returns on time. The amount of the penalty depends on how late the payment is and whether this is a repeated offence. For example, if you pay your Self Assessment tax late, you may face an initial £100 penalty, with further penalties added as the delay continues.

Enforcement Action

If tax debts are not settled after reminders and penalties, HMRC may take more serious steps to recover what you owe. This can include enforcement action, such as:

  • Arranging for debt collection agencies to recover the debt on their behalf
  • Taking money directly from your wages or bank account (known as an ‘attachment of earnings’ or ‘direct recovery of debts’)
  • Taking court action to obtain a County Court Judgment (CCJ) or other legal orders
  • In extreme cases, applying for bankruptcy proceedings or seizing assets

It’s important to note that if you agree to and keep to a payment arrangement, further enforcement action may be avoided. However, failing to engage with HMRC or breaking an agreed payment plan can lead to these more serious steps.

Impact on Credit Rating and Financial Reputation

Having tax arrears can also damage your financial standing. If HMRC takes court action and obtains a CCJ or similar order against you, this will be recorded on your credit file. A poor credit rating can make it more difficult to obtain loans, mortgages, or even some forms of employment in the future.

Beyond your credit score, having unpaid tax debts can affect your reputation with banks, landlords, and other organisations that may conduct credit checks. It’s always better to deal with tax arrears promptly to avoid long-term financial consequences.


If you’re struggling to pay your tax, it’s important to get advice and act quickly. Arranging a payment plan with HMRC or seeking help from a debt adviser can help you manage your situation and reduce the risk of penalties or enforcement action. For further details on what to expect and how to respond, see our section on the consequences of missed payments and arrears.

How can I set up a payment plan with HMRC to avoid enforcement?

Your Rights and Responsibilities with Tax Arrears

When you find yourself in tax arrears, it’s important to understand both your rights and your responsibilities. Knowing what you are entitled to, and what is expected of you, can help you manage unpaid tax payments more effectively and avoid further penalties.

Your Right to Clear Information from HMRC

You have the right to receive clear, accurate information from HM Revenue and Customs (HMRC) about how much tax you owe, how your bill has been calculated, and any penalties or interest that may apply. HMRC is required by law to provide detailed breakdowns of your tax arrears and to explain your payment options. If anything is unclear, you can contact HM Revenue and Customs (HMRC) directly to request clarification or further details.

Your Responsibility to Respond Promptly

If you receive a notice or demand for payment from HMRC, you are legally required to respond within the timeframes stated in the correspondence. Ignoring letters or deadlines can lead to extra charges, enforcement action, or legal proceedings. Even if you cannot pay the full amount immediately, it is essential to let HMRC know your situation as soon as possible.

Disputing Incorrect Tax Assessments

Mistakes can happen, and you have the right to challenge any tax assessment you believe is incorrect. If you think HMRC has miscalculated your tax or applied the wrong penalties, you can formally dispute the assessment. This process is known as making an appeal. You must do this within the time limits set by law – usually within 30 days of receiving the assessment. For practical guidance on how to challenge a decision or check if your tax bill is accurate, see the Tax Assessment advice from Citizens Advice.

Keeping Communication Open

One of the most important things you can do when dealing with tax arrears is to keep communication open with HMRC. If you’re struggling to pay, HMRC may be able to offer a payment plan or other support. Letting them know about your circumstances early can help you avoid enforcement action and may reduce additional costs. If your situation changes – for example, if you lose your job or face unexpected expenses – inform HMRC as soon as possible so they can update your payment arrangements.

Practical Steps to Take

  • Check all correspondence: Read every letter or email from HMRC carefully and keep copies for your records.
  • Gather evidence: If you plan to dispute a tax bill, collect payslips, bank statements, or other documents to support your case.
  • Seek advice: If you are unsure about your rights or need help dealing with HMRC, consider seeking independent advice. Citizens Advice offers free, confidential support on managing tax debts and understanding your obligations.

Understanding your rights and responsibilities is the first step to resolving tax arrears. For more information about HMRC’s role and how to contact them, visit HM Revenue and Customs (HMRC). If you need detailed guidance on dealing with income tax arrears, including how to dispute assessments and avoid penalties, see the Tax Assessment resource from Citizens Advice.

How can I appeal if I believe my tax arrears are incorrect?

Managing and Repaying Tax Arrears

Managing and Repaying Tax Arrears

If you find yourself owing unpaid tax to HMRC, it’s important to take action as soon as possible to avoid further penalties and interest. Here’s how you can manage and repay your tax arrears effectively.

Contacting HMRC About Unpaid Tax

The first step is to let HM Revenue and Customs (HMRC) know about your situation. HMRC encourages anyone who is struggling to pay their tax bill to get in touch promptly. By contacting them early, you may be able to prevent enforcement action and additional charges.

You can discuss your circumstances with HMRC by phone or online through your personal tax account. Be ready to explain why you’re unable to pay, provide details about your income, expenses, and debts, and discuss what you can realistically afford.

Arranging a Time to Pay Agreement

If you can’t pay your tax bill in full, HMRC may offer a Time to Pay arrangement. This is a formal payment plan that allows you to pay your tax arrears in affordable instalments, usually over 12 months, but sometimes longer depending on your situation.

To arrange a Time to Pay agreement, you’ll need to:

  • Propose how much you can pay each month,
  • Provide evidence of your income and outgoings,
  • Commit to making regular payments on time.

HMRC will consider your proposal and may adjust the plan if they think you can pay more or less. If you stick to the agreement, HMRC will usually pause any further penalties or legal action. However, missing payments could put the arrangement at risk.

Budgeting and Debt Management Strategies

Repaying tax arrears can be challenging, especially if you have other financial commitments. Creating a realistic budget is essential. Start by listing all your income and expenses, and see where you can cut costs or reprioritise spending to free up money for your tax payments.

There are practical tools and advice available for managing your debt and budgeting, which can help you stay on top of your repayments and avoid falling further behind. If you have other debts, such as credit cards or overdrafts, it’s important to consider how these fit into your overall financial plan. You may find it helpful to read more about struggling with credit card debt or managing overdrafts to get a clearer picture of your options.

If You Cannot Afford to Pay Immediately

If you’re unable to pay anything towards your tax arrears right now, don’t ignore the problem. HMRC may still be able to help if you explain your circumstances fully. They might agree to a temporary pause on enforcement action or offer advice on what to do next.

It’s also worth seeking independent debt advice to explore all your options. Remember, ignoring tax arrears can lead to serious consequences, including legal action, extra penalties, and damage to your credit rating.

For full details on how to deal with unpaid tax, including how to set up a payment plan and what to expect from the process, visit HM Revenue and Customs (HMRC).

Taking control of your tax arrears may feel daunting, but with the right support and a clear plan, you can manage your repayments and work towards becoming debt-free.

Can I negotiate a Time to Pay plan that fits my budget?

How to Arrange a Payment Plan with HMRC

How to Arrange a Payment Plan with HMRC

If you find yourself unable to pay your tax bill in full, it’s important to act quickly. HM Revenue and Customs (HMRC) can help you set up a payment plan, often called a “Time to Pay” arrangement, which allows you to pay what you owe in manageable instalments.

Steps to Contact HMRC and Request a Payment Plan

  • Gather Your Information: Before contacting HMRC, make sure you have details about your tax bill, your income, expenses, and any other debts. Being prepared will help you discuss what you can realistically afford to pay each month.
  • Contact HMRC as Soon as Possible: Don’t wait until you miss a payment or receive a penalty. You can contact HMRC directly by phone or through their online services. For detailed guidance and contact information, visit HMRC. This page explains how to get more time to pay or set up instalments if you’re struggling.
  • Discuss Your Situation: HMRC will ask about your financial circumstances to work out a suitable payment plan. Be honest about your income and outgoings – they use this information to decide what you can afford.
  • Agree the Payment Terms: If HMRC agrees to a payment plan, they’ll confirm how much you need to pay and when. You’ll usually make monthly payments by Direct Debit.

Typical Terms and Length of Payment Arrangements

  • Length of Plan: Payment plans are often set up for up to 12 months, but longer arrangements may be possible in some cases, depending on your situation and the amount owed.
  • Interest and Penalties: HMRC will usually continue to charge interest on the outstanding balance until it’s fully paid. However, setting up a plan can help you avoid additional penalties and enforcement action.
  • Flexibility: If your circumstances change, you should contact HMRC immediately. They may be able to adjust your plan if your income drops or you face unexpected expenses.

Importance of Keeping Up with Agreed Payments

Once your payment plan is in place, it’s vital to make every payment on time. Missing payments or failing to keep in touch with HMRC can result in:

  • The cancellation of your payment plan
  • Immediate demand for the full outstanding amount
  • Potential enforcement action, such as debt collection or legal proceedings

If you think you might miss a payment, contact HMRC straight away. They may be able to help you avoid further problems by adjusting your plan.

For more detailed advice on what to do if you cannot pay your tax bill on time, including how to arrange or manage a payment plan, visit HMRC.

Taking prompt action and staying in contact with HMRC can help you manage tax arrears and avoid more serious consequences.

Can I negotiate a longer payment plan with HMRC if I can’t afford monthly instalments?

What to Do If You’re Struggling to Pay

If you’re finding it difficult to pay your tax arrears, it’s important to act quickly. Ignoring the problem can lead to extra charges, legal action, or even enforcement measures from HMRC. Here’s what you can do if you’re struggling to pay:

Request More Time or Flexible Payments

HMRC understands that people can face financial difficulties. If you can’t pay your tax bill in full, you may be able to set up a Time to Pay arrangement. This lets you spread your payments over a period you can afford, usually through monthly instalments. You’ll need to contact HMRC as soon as possible to discuss your situation and agree on a plan. In some cases, HMRC may also accept reduced payments for a set period if you can show you’re unable to pay more.

Get Professional Advice

It can be helpful to talk to a professional before making any decisions. Independent debt charities and financial advisors can offer free, confidential advice tailored to your circumstances. They can help you understand your options, negotiate with HMRC, and make sure you’re not missing out on any support. For more practical guidance on managing debt effectively, including tips on budgeting and dealing with creditors, see our dedicated advice.

Don’t Ignore Tax Arrears

Letting tax arrears build up without taking action can make things worse. HMRC may add penalties and interest to your debt, and in serious cases, they can take enforcement action such as deducting money from your wages or bank account, or even taking you to court. By reaching out early and being proactive, you’re more likely to find a manageable solution and avoid further stress.

If you’re worried about unpaid tax, remember that there is help available. Taking the first step to address the issue is the best way to protect your finances and get back on track.


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