Self Assessment Tax Return

Self-assessment can be complex. Our experts will ensure your tax return is accurate and filed on time so you can focus on what matters most. Contact us for a stress-free experience.

Deadlines for the 2023/24 Tax Year:

• 5th October 2024: Deadline to register for Self Assessment if you haven't already.

• 31st January 2025: Deadline for filing your online tax return.

• 31st January 2025: Deadline to pay any tax owed for the 2023/24 tax year.

• 31st July 2025: Second payment on account deadline for those who make advance payments towards their tax bill.

How to Get Your UTR Number

Your Unique Taxpayer Reference (UTR) is a 10-digit number (sometimes with a letter K at the end) that HMRC uses to identify you for tax purposes. You'll need it to file your Self Assessment tax return.

If you've registered for Self Assessment before, you can find your UTR number:

• On the front page of your previous tax returns.

• On any Self Assessment documents, HMRC has sent you (notices to file, payment reminders, etc.).

• In your online government gateway account under the "Self Assessment" section.

If you're newly registering for Self Assessment:

1. Register for HMRC's online service at the Government Gateway.

2. Enrol for Self Assessment through the Government Gateway.

3. Wait for your UTR activation code to arrive in the post (usually within a few weeks).

4. Activate your UTR number online using the activation code within 28 days of receiving it.

Frequently Asked Questions about Self Assessment

Q: Can I be both employed and self-employed?

A: Absolutely! Many people have both employed and self-employed income. You'll need to report both on your Self Assessment tax return.

Q: What if I own my own limited company?

A: If you own a limited company, you're technically a director and shareholder, not self-employed. You'll need to file a Self Assessment tax return to report your income from the company (salary, dividends, etc.). Your company will also have its own tax obligations. See our Annual Financial Accounts page for more information.

Q: What are some common Self Assessment mistakes to avoid?

A: Here are a few common pitfalls:

• Missing deadlines: Make sure you're aware of the key deadlines for registration, filing, and payment.

• Forgetting about tax relief: Claim all the allowable expenses and reliefs you're entitled to.

• Overlooking payments on account: If you're liable for payments on account, remember to make these advance payments towards your tax bill.

• Using the wrong tax code: Ensure your tax code is correct to avoid paying too much or too little tax.

• Failing to declare all income: Report all your income, including salary, benefits, and reimbursements from PAYE employment.

Q: What does my tax code mean?

A: Your tax code is a series of numbers and letters that tells HMRC how much tax-free allowance you get. Here's a breakdown of some common codes:

• L: Standard tax-free Personal Allowance.

• M: You receive 10% of your partner's Personal Allowance.

• N: Your partner receives 10% of your Personal Allowance.

• S: You're using the Scottish rate of income tax.

• T: Your tax code includes other calculations.

• Y: You were born before 6 April 1938 and get a higher Personal Allowance.

• 0T: Your Personal Allowance has been used up, or you've started a new job.

• BR: Basic rate taxpayer (no Personal Allowance).

• D0: Higher rate taxpayer (no Personal Allowance).

• D1: Additional rate taxpayer (no Personal Allowance).

• NT: You're not paying tax on this income.

• K: You have income that isn't being taxed another way, and it's worth more than your tax-free allowance.

Important Note: If you see BR, D0, or D1 and it's not from a second job, contact HMRC. If you've recently changed jobs, ensure you're not on an emergency tax code.