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Can't Pay Your Tax Bill? How to Set Up a Time to Pay Arrangement with HMRC

  • Aug 10
  • 6 min read

Receiving a tax bill that is higher than expected is one of the most stressful experiences for any small business owner or self-employed professional. Whether it is a sudden dip in cash flow, an unexpected business expense, or simply a miscalculation of your liabilities, the sight of a five-figure sum due to HMRC can be daunting.

However, it is important to remember that you are not alone, and more importantly, HMRC has formal procedures in place to help those who are genuinely struggling to pay. In the UK, this is known as a Time to Pay (TTP) arrangement. Instead of ignoring the problem: which can lead to hefty penalties and aggressive debt collection: a TTP arrangement allows you to spread your tax bill over several months, making it manageable and predictable.

In this guide, we will walk you through exactly how to set up a Time to Pay arrangement in 2026, what the current interest rates are, and how professional accountants for small business can help you navigate this process.

What is a Time to Pay (TTP) Arrangement?

A Time to Pay arrangement is a debt repayment plan agreed upon between a taxpayer and HMRC. It is designed for individuals and businesses who are currently unable to pay their tax bill in full but can demonstrate that they will be able to pay it back over a fixed period of time.

It is crucial to understand that HMRC treats Time to Pay as a discretionary measure. This means they are not legally required to give you a plan; they will only do so if they believe you are making a genuine effort to pay and that your financial difficulties are temporary.

A TTP arrangement usually covers:

  • Self Assessment income tax

  • VAT

  • Corporation Tax

  • PAYE and National Insurance for employers

While the arrangement is in place and you are meeting your monthly payments, HMRC will generally stop any enforcement action against you. This provides vital breathing room for your business to recover its cash flow.

The 2026 Rules for Self Assessment

As we move through 2026, HMRC has streamlined the process for setting up these plans, particularly for those with Self Assessment debts.

The Online Threshold

If you owe £30,000 or less in Self Assessment tax, you can usually set up a payment plan online without ever having to pick up the phone. This "Self-Service" Time to Pay facility is available through your Government Gateway account.

To use the online service, you must meet the following criteria:

  1. Your tax return for the relevant year must be filed.

  2. You must be within 60 days of the payment deadline.

  3. You do not have any other active payment plans or debts with HMRC.

  4. The debt is for Self Assessment specifically.

If you owe more than £30,000, or if you need more than 12 months to pay, you will need to contact the HMRC Debt Management team directly to negotiate.

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Step-by-Step: How to Set Up Your Arrangement

If you find yourself unable to meet your 31st January or 31st July payment deadlines, follow these steps immediately:

1. File Your Return First

HMRC will not even discuss a payment plan with you until they know exactly how much you owe. You must file your Self Assessment tax return before the deadline, even if you know you cannot pay the resulting bill. Filing on time avoids "late filing" penalties, leaving you only with the "late payment" issue to solve.

2. Assess Your Budget

Before contacting HMRC, sit down with your records or speak to a business accountant UK to determine what you can realistically afford to pay each month. HMRC will ask for a breakdown of your income and expenses. They expect you to pay the debt off as quickly as possible, usually within 12 months.

3. Choose Your Method

  • Online: Log into your personal tax account. If you are eligible, the "Set up a payment plan" option will be visible. You can choose the amount you want to pay upfront and the length of the monthly instalments.

  • Phone: If you aren't eligible for the online service, call the Self Assessment Payment Helpline. Be prepared to explain why you can't pay and what you've done to try and raise the money (e.g., trying to get a loan or cutting costs).

4. Stick to the Plan

Once agreed, you must not miss a payment. If you miss an instalment, the entire arrangement can be cancelled, and HMRC may demand the full amount immediately, including added interest and penalties.

The Cost of Delay: Interest Charges in 2026

One common misconception is that a Time to Pay arrangement "freezes" your debt. Unfortunately, this isn't the case. While a TTP plan stops additional penalties from accruing, you will still be charged late payment interest.

As of mid-2026, the HMRC late payment interest rate stands at 7.75% per annum. This rate is tied to the Bank of England base rate plus 4 percentage points. Because the interest is calculated daily, the longer you take to pay off the bill, the more expensive it becomes. This is why it is always better to pay as much as you can upfront to reduce the principal balance.

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How Making Tax Digital (MTD) Helps Avoid Surprises

The rollout of Making Tax Digital (MTD) for Income Tax Self Assessment has changed the way many small businesses interact with their finances. While MTD brings new administrative requirements, it offers a significant advantage when it comes to tax planning.

By using MTD-compatible software and providing quarterly updates to HMRC, you gain a real-time view of your estimated tax liability throughout the year. Instead of waiting until January to discover a massive bill, you can see the debt building up every three months.

Many bookkeeping services now include tax forecasting. This allows you to set aside money gradually or, if you see a large bill coming, it gives you several months of lead time to prepare a Time to Pay application before the deadline even arrives.

Why You Should Seek Professional Help

Navigating HMRC's debt management can be intimidating. This is where a professional business accountant UK becomes an invaluable asset.

An experienced accountant can:

  • Negotiate on your behalf: Accountants deal with HMRC daily. They know what kind of payment terms are realistic and how to present your financial case to ensure the best chance of approval.

  • Review your return: Before you admit you can't pay, an accountant will check that you haven't over-claimed or missed out on vital tax reliefs that could lower the bill in the first place.

  • Cash flow management: They can help you restructure your business finances to ensure you don't end up in the same position next year.

If you are a director of a limited company, the rules are slightly different, and the stakes can be higher. A limited company accountant can help you understand the implications of tax debt on your company's credit rating and legal standing.

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Act Quickly to Protect Your Business

The worst thing you can do when faced with an unaffordable tax bill is nothing. HMRC is generally much more lenient with taxpayers who come forward voluntarily before the payment deadline than those who wait for a debt collection letter to arrive.

By setting up a Time to Pay arrangement, you demonstrate that you are a responsible business owner committed to meeting your obligations. It protects your business from legal action and allows you to focus your energy back where it belongs: growing your SME.

If you are currently worried about an upcoming bill, don't wait for the deadline to pass. Start by getting professional advice to see where you stand. You can find an accountant through our network who specializes in SME tax issues and can help you secure a fair deal with HMRC.

At Accountant Search, we make it easy to compare accountant quotes from qualified professionals in your local area. Whether you need help with a one-off Self Assessment or ongoing support to stay compliant with MTD, we can match you with the right expert to take the stress out of tax season.

Final Thoughts

A Time to Pay arrangement is a tool, not a "get out of jail free" card. It carries a cost in interest, but it is a far better alternative than the stress of insolvency or court proceedings. Take control of your finances today by being proactive, staying digital, and working with a professional who understands the UK tax landscape.

 
 
 

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