What is s455 Tax and What Business Owners Need to Know?

By
Igor Mishnov
Jun 30, 2025
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What is s455 Tax? Key Insights for Business Owners

If you're a business owner, chances are you've heard of s455 tax. But what is it, and why should you care? Let me set the scene. Imagine this: you’ve built a great business, everything’s running smoothly, and then — bam! — you find out that the taxman wants to charge you a hefty fee for taking a loan from your own company. This is where s455 tax steps in.

But don’t panic! I’m here to break it down, plain and simple. Whether you’re a director in a small business or a shareholder, understanding how s455 works can save you from unexpected tax headaches. In this post, we’ll cover everything you need to know about s455 tax — what triggers it, who’s responsible, and how you can manage it without getting caught out. Ready? Let’s dive in!

What Triggers the Section 455 Tax Charge?

So, here’s the deal: s455 tax applies when you, as a director of a close company, borrow money from your business. Sounds simple enough, right? But here's the catch: if you don’t repay that loan within nine months and one day after the end of your company’s accounting period, you’re liable for tax.

Let’s break it down. Imagine this scenario: you’re a director of a small, family-run business (we’ll call it “Smith Enterprises”). You take out a loan from the company to buy a new car — nothing extravagant, just a practical business expense. The loan seems like a great idea, but you forget to pay it back on time. Oops! Guess what happens? Your business is now liable for s455 tax.

The tax is calculated as a percentage of the outstanding loan value, and the rate increased in 2022 to 33.75%. That’s a big chunk of change, especially if you have multiple loans or are already struggling with cash flow. The good news is, if you repay the loan within four years, you can get a refund, but that's still a long wait. It’s best to avoid this trap in the first place!

Who Pays S455 Tax — the Company or the Director?

Now, this might sound a bit confusing at first. Here’s the thing: the company pays the s455 tax, not the director personally. But that doesn’t mean you’re off the hook. The company will be on the hook for the tax if the loan isn’t repaid on time, and if the company doesn’t have enough funds to cover it, the director may face personal consequences.

Think about it this way: you’re the captain of the ship. If the ship hits an iceberg (i.e., the loan is unpaid), it’s your company that will suffer. However, as the director, you’re ultimately responsible for steering clear of the icebergs in the first place. It’s not just about you anymore — it’s about the whole business!

Does S455 Tax Apply to All Director Loans?

Not necessarily! While s455 tax applies to most director loans, there are certain exceptions. For example, if you’re a director who borrows a small amount of money (say under £10,000) and repays it quickly, s455 tax likely won’t come into play.

But if you’re taking out larger loans, or if you’re making multiple loans from the company, you’re walking a fine line. And, to make things trickier, s455 tax doesn’t just apply to loans to directors. It also applies to loans made to family members or associates, like your spouse or business partner. So if you lend money to your spouse to buy a new car, that might trigger s455 tax as well. Keep an eye on the family finances!

What is the Purpose of Section 455 Tax?

So, why does this tax exist in the first place? The purpose of s455 tax is to prevent directors from using their company as a personal bank account. It’s designed to discourage interest-free loans without any set repayment dates. The tax ensures that directors can’t just borrow money indefinitely without paying taxes on it, while still enjoying the perks of company ownership.

Think about it like this: let’s say you’re a business owner, and you borrow money from your company. If you don’t pay it back or set a timeline to repay it, it’s like taking money from your business without giving anything back — except the taxman wants their share!

How is the 33.75% S455 Tax Calculated?

Here’s where it gets technical, but I’ll keep it simple. The amount of s455 tax you owe depends on the outstanding loan balance and whether it’s been repaid on time. Let’s say you borrowed £20,000 from your business, and you didn’t repay it within the required time frame.

At the new 33.75% tax rate, the company would owe £6,750 (33.75% of £20,000). And that’s just the tax. If your loan wasn’t repaid on time, you could end up paying even more in interest and penalties. So, it pays to stay on top of these repayments!

What Happens if the Loan is Repaid After 9 Months?

If you pay back the loan after the 9-month deadline, the company will have to pay the tax. But — and here’s the silver lining — if the loan is repaid within four years from the end of the accounting period, the company can claim a refund for the tax paid. It’s a bit of a waiting game, but it’s possible to get some of that money back.

However, don’t wait too long. The longer you delay, the more penalties and interest could accrue. The taxman isn’t going to just forget about it, even if you’re dealing with a delayed repayment.

What If Only Part of the Loan is Repaid Within 9 Months?

Now, here’s a question I get often: “What if I only pay back part of the loan within the 9 months?” Great question! The short answer is that the company will still owe s455 tax on the full outstanding loan. In other words, if you take out a £20,000 loan and repay £5,000, the company will still be on the hook for the tax on the full £20,000 until the loan is completely paid off.

So, it’s crucial to aim for full repayment if you want to avoid the full s455 tax charge. Partial repayments don’t cut it here!

How Do You Reclaim S455 Tax If the Loan is Repaid?

Here’s the good news: If the loan gets repaid after the 9-month deadline and the company has already paid the tax, you can reclaim the tax. The process isn’t automatic, but you can claim the refund when filing your Corporation Tax return. Just be sure to keep all the paperwork handy, including proof of repayment and any relevant details about the loan.

Penalties and Mistakes: The Consequences of Ignoring S455 Tax

Not dealing with s455 tax correctly can lead to some pretty serious consequences. If you miss the deadline, the company could face penalties and interest charges. And, since HMRC is pretty vigilant about loans like these, they may even challenge interest-free loans or loans made to family members.

In the worst-case scenario, if the company is liquidated and the loan hasn’t been repaid, the director could face personal consequences, like having to repay the loan or even facing legal action.

How Can Business Owners Legally Minimise S455 Exposure?

The key to avoiding s455 tax is simple: repay the loan on time. If you take out a director’s loan, set a timeline for repayment and stick to it. You can also use dividends or bonuses to clear the loan. But always remember, dividends come with their own tax implications, so you’ll want to get advice before going down that route.

Should I Avoid Taking a Director’s Loan?

Taking a director’s loan isn’t necessarily a bad thing, but it’s important to plan ahead. If you know you can repay it quickly, it might be a good option. However, if you’re unsure about repayment timelines or don’t want the extra tax burden, you might want to consider alternatives — like paying yourself a salary or declaring a dividend instead.

In Conclusion

S455 tax might seem a little tricky at first, but once you understand the rules, it’s easier to avoid the common pitfalls. Remember, the key to staying on the right side of HMRC is simple: repay your loans on time. If you do that, you can keep the taxman at bay and focus on growing your business.

I hope this helps! If you’ve got any questions, feel free to get in touch with Zeus Accountants. Stay tax-savvy, and keep your business on track!

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