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Corporation Tax Late Payment Interest – An Up-to-Date Guide

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Corporation Tax Late Payment Interest - An Up-to-Date Guide

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In the complex corporate finance and taxation world, the late payment interest on corporation tax often catches companies off guard. 

Governed by HM Revenue and Customs (HMRC), this financial mechanism isn’t just a punitive measure for tardiness; it serves multiple functions.

It incentivises timely payment, compensates the government for the ‘time value’ of delayed funds, and aims to level the playing field among businesses. 

But why does it exist?

How is it calculated?

And what should you do if your company cannot meet its corporation tax obligations on time? 

In the UK, where corporation tax is a significant financial obligation for large and small companies, understanding the intricacies of late payment interest is not just advisable—it’s essential. 

This guide aims to provide an up-to-date, comprehensive overview of everything you need to know about Corporation Tax Late Payment Interest.

Related Post: Application to Strike the Company Off the Register

What is HMRC Corporation Tax Late Payment Interest?

HM Revenue and Customs (HMRC) is the UK’s tax authority, responsible for administering and collecting taxes, including Corporation Tax.

When a company fails to pay its corporation tax on time, HMRC charges interest on the overdue amount. This is known as Corporation Tax Late Payment Interest.

This interest charge acts as both a punitive and a compensatory mechanism.

It serves as a penalty to encourage prompt payment and compensates the government for the time value of the money that is paid late.

The interest rate is not static; it fluctuates according to certain market conditions and is generally based on the Bank of England base rate plus a specific percentage.

It’s essential to keep up to date with the current interest rates to calculate the potential cost of any late payment accurately.

Bear in mind that this interest charge starts accruing from the day immediately after the tax should have been paid and continues until the outstanding amount is fully paid.

Unlike other penalties that might be levied as a lump sum, late payment interest accumulates over time.

Therefore, the longer the delay in payment, the higher the interest charges.

Why is There an Interest Charge on Late Corporation Tax?

The rationale behind charging interest on late corporation tax payments is multi-faceted.

Firstly, it incentivises timely compliance with tax obligations.

Without such a deterrent, companies might be tempted to use the tax owed as working capital, thereby affecting the government’s ability to fund public services and implement various projects.

Secondly, the interest charge compensates the government for the ‘opportunity cost’ of not having the funds available for its use within the expected timeframe.

HMRC collects taxes to finance public expenditures like healthcare, education, and infrastructure.

When payments are delayed, it indirectly affects the country’s fiscal stability and social welfare.

Lastly, the interest charge establishes a level playing field among different companies.

If some companies pay on time while others don’t, it might provide an unfair financial advantage to the late-paying companies.

The interest charge, therefore, serves to make the business environment more equitable.

When is Corporation Tax Due to HMRC?

Understanding when your corporation tax is due is critical for avoiding unnecessary interest charges.

Generally, for small businesses with profits less than £1.5 million, corporation tax is due nine months and one day after the end of the accounting period.

The tax is usually payable in instalments for companies with profits exceeding £1.5 million.

Your accounting period for corporation tax is typically the same as your financial year.

However, exceptions may arise, particularly if your accounting period is longer than 12 months.

In such cases, the due dates and calculations can become more complex, and professional advice is highly recommended.

Failure to pay the tax by the due date automatically triggers the interest charge.

Therefore, it’s crucial to mark these important tax dates in your calendar and perhaps even set up reminders to avoid unintentional delays.

What Happens if You Are Late Paying Corporation Tax?

Falling behind on your corporation tax payments can have several consequences.

First and foremost, you’ll accrue late payment interest from the day after the tax was due until you pay the full amount owed.

Additionally, HMRC may pursue legal action to recover the debt, which could result in extra costs for your business in terms of legal fees and court charges.

Furthermore, a history of late payments could negatively impact your relationship with HMRC.

This might result in more intensive scrutiny of your future tax returns and even trigger a full tax investigation.

A poor payment history could also affect your company’s credit rating, making it more challenging to secure financing or engage in other financial transactions that require a sound credit history.

It’s worth mentioning that in some severe cases, directors of the company may be held personally liable for the unpaid tax, especially if HMRC believes that there has been a deliberate attempt to evade tax obligations.

Therefore, paying your corporation tax on time is a legal requirement and an important aspect of maintaining your business’s financial health.

What Should You Do If You Can’t Pay Corporation Tax?

If you’re facing financial difficulties and realise you won’t be able to pay your corporation tax on time, it’s crucial to contact HMRC as soon as possible.

Proactive communication may open the door for negotiating a Time to Pay Arrangement (TTP), which would allow you to pay the owed tax in instalments over an agreed period.

While a TTP can provide temporary relief, it doesn’t stop the interest from accruing on the unpaid amount.

Therefore, paying off the debt as quickly as possible is generally in your best interest.

Consider seeking professional financial advice to assess your options and determine the most effective way to resolve your tax obligations without accruing crippling interest charges.

Note that failing to contact HMRC and ignoring your tax obligations can lead to more severe penalties, including legal action.

So, timely engagement with HMRC is crucial when you’re unable to meet your corporation tax liabilities.

Is Corporation Tax Late Payment Interest Tax Deductible?

One question that frequently arises is whether the interest on the late payment of corporation tax is tax-deductible.

Unfortunately, the answer is no.

Interest charged by HMRC for late payment of corporation tax is considered a penalty and, therefore, is not allowable as a business expense for tax purposes.

In contrast, the interest you pay on business loans or overdrafts is generally tax-deductible because they are considered costs incurred wholly and exclusively for the purpose of the trade.

However, HMRC’s interest is punitive in nature, and the legislation explicitly disallows it as an expense. 

This further underlines the importance of paying your corporation tax on time to avoid the double hit of paying interest and not being able to offset it against your profits.

Can You Appeal Against Corporation Tax Late Payment Interest Charges from HMRC?

If you believe that you have a reasonable excuse for your late payment, you can file an appeal against the interest charge.

However, the criteria for what constitutes a ‘reasonable excuse’ are stringent.

Scenarios that might qualify could include the sudden and unexpected hospitalisation of a key person responsible for tax compliance or perhaps a significant disruption like a natural disaster that directly impacted your ability to pay on time.

It’s important to note that filing an appeal does not halt the accrual of interest.

While the appeal is being reviewed, the clock keeps ticking. If your appeal is successful, any accrued interest from the date of your reasonable excuse will usually be refunded.

If the appeal is denied, you’ll need to pay the original amount plus any additional interest accrued during the appeal process.

In summary, appealing against late payment interest charges is a route available, but it’s not a guaranteed way to avoid the charge.

Solid documentation and a strong case are essential for a successful appeal.

Final Notes On Corporation Tax Late Payment Interest

Understanding the nuances of Corporation Tax Late Payment Interest is critical for any business aiming to maintain good financial standing and a healthy relationship with HMRC.

The interest rate is not just a penalty but a mechanism that ensures fairness and timely contribution to the state’s coffers.

Failing to comply can lead to a series of negative consequences, from additional financial burdens in the form of accumulating interest to potential legal action and damage to your company’s reputation.

If you’re struggling with corporation tax payments, remember that early and open communication with HMRC is often the best course of action.

While the interest charges can’t be avoided entirely, setting up a Time to Pay Arrangement can mitigate some of the immediate financial pressures.

By keeping these crucial points in mind, you can better navigate the complex terrain of corporation tax and prevent unnecessary costs and complications.

Struggling to Pay Corporation Tax? Don’t Panic, We Can Help.

Facing difficulties with your corporation tax payments can be overwhelming and stressful.

But you don’t have to go through it alone.

At Marchford, we specialise in helping directors like you explore viable options when dealing with late or unmanageable corporation tax payments. 

Our expert advisors will help you understand your financial obligations, navigate HMRC regulations, and develop a strategic plan tailored to your situation.

If you’re grappling with corporation tax issues, don’t hesitate. Contact Marchford today for a free, no-obligation consultation. Let us guide you through your options and put your mind at ease.

For free confidential advice, get in touch today.


Hannah Paull

Hannah Paull

Hannah Paull is a co-director at Marchford with over 25 years experience as a trained accountant, including lecturing the AAT Accounting Qualification. After specialising in company closures and insolvency, Hannah has, for the last 5 years helped hundreds of directors of struggling limited companies with a wide range of solutions including company closures.


Hannah Paull

Hannah Paull

Hannah Paull is a co-director at Marchford with over 25 years experience as a trained accountant, including lecturing the AAT Accounting Qualification. After specialising in company closures and insolvency, Hannah has, for the last 5 years helped hundreds of directors of struggling limited companies with a wide range of solutions including company closures.
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