10 Tax Mistakes Limited Company Directors Make (That Cost More Than They Should)

Running a limited company gives you a lot of freedom — especially when it comes to how you take money out.

But here’s the thing…

A lot of directors are quietly paying more tax than they need to — not because they’re doing anything wrong, but because no one’s ever explained the smarter way to do it.

The good news? Most of these are easy fixes once you know what to look for.

Let’s run through 10 of the most common ones 👇

1. Paying Yourself Like an Employee

A lot of directors default to taking a big salary.

It feels logical… but it’s usually not the most tax-efficient way.

Salary comes with:

• Income Tax

• Employee NI

• Employer NI

 In many cases, a mix of salary + dividends works much better.

2. Ignoring Pensions (Because They Sound Boring)

Let’s be honest — pensions aren’t exactly exciting.

But they are one of the best tax-saving tools available.

When your company pays into your pension:👉 You reduce Corporation Tax👉 You avoid Income Tax👉 You avoid National Insurance👉 You avoid dividend tax

So yes… boring, but very effective.

3. Forgetting Expenses (and Paying Tax on Them Anyway)

If you don’t claim your expenses, HMRC assumes you made more profit than you actually did.

Which means…You pay tax on money you didn’t really keep

Common ones people miss:

• Working from home

• Software subscriptions

• Travel

• Training

4. Treating the Company Account Like a Personal Wallet

We see this a lot.

Using the business account for personal spending might seem harmless, but it can create:

• Director’s loan issues

• Unexpected tax

• Messy records

👉 Keeping things separate saves a lot of headaches.

5. Taking Dividends Without Checking

Dividends aren’t just “take money when you want”.

They must come from profits.

If you skip the check, it can cause problems later.

👉 Quick habit: check your numbers before paying yourself.

6. Missing the £10,500 Allowance

If your company qualifies, you could reduce Employer’s NI by up to:

👉 £10,500 (2025/26)

But a surprising number of directors either:

• Don’t realise they qualify

• Or never actually claim it

7. The “I’ll Do the Books Later” Approach

We all do it… until suddenly it’s year-end and everything needs sorting.

The result:

• Missed expenses

• Errors

• Stress

👉 A little bit each month, with a cup of tea or coffee = much easier (and usually saves money too)

8. Thinking “That Money Is Mine”

Seeing money in your business account feels great.

But some of it already belongs to HMRC.

You’ll likely need to pay:

• Corporation Tax

• VAT

• Personal tax

👉 Setting some aside regularly avoids that “oh…” moment later.

9. Accidentally Creating a Taxable Benefit

If your company pays for something you personally use (like a car or certain assets), it can trigger extra tax.

This is called a Benefit in Kind.

👉 Not always obvious — but definitely worth checking first.

10. Waiting Until Something Goes Wrong

A lot of directors only speak to an accountant when there’s an issue.

But most tax savings come from:👉 Planning ahead, not fixing things later

Even a quick review can make a big difference.

Final Thoughts

None of these are unusual.

In fact, most directors will recognise at least one of them.

The key thing is — once you spot them, they’re usually easy to fix.

And getting them right can mean:👉 Paying less tax👉 Having more clarity👉 And feeling more in control of your business

Not Sure If Any of These Apply to You?

If you’ve read this and thought:

“I might be doing one or two of these…”

You’re definitely not alone.

At The Tax Return Expert, we keep things simple and help you understand exactly what’s going on — without jargon or pressure.

👉 Feel free to get in touch for a quick chat by email on team@thetaxreturnexpert.co.uk