The self-assessment deadline for 2023/24 tax returns will soon be upon us. It is important to know when your information needs to be submitted.

When is the Self-Assessment Deadline?

The deadline for the online submission of self-assessments is 31^st January following the tax year. For 2023/24 returns, the deadline is 31^st January 2025. This is also the payment deadline. You must ensure the tax return is submitted and paid before midnight to avoid penalties.

How Do I Know to Complete a Self-Assessment?

If you have previously completed a self-assessment, HMRC will notify you if a return is needed for that tax year. If you have met the criteria to complete a self-assessment for the first time, you will need to notify HMRC.

How do I Submit a Self-Assessment?

You can submit self-assessments through the HMRC portal. You will need our Unique Taxpayer Reference (UTR), which you will have received after registering for self-assessment.

If you are working with an accountant, they can submit the return on your behalf. We offer self-assessment services to clients across the UK. You can visit our page to learn more.

How Do I Pay my Self-Assessment Tax?

You can pay your self-assessment tax in a variety of ways. HMRC provide a breakdown of the available methods here.

Some additional methods include paying via your tax code if you are on a payroll, or setting up a payment plan with HMRC.

Most individuals will make two payments a year, known as payments on account.

Is there a Fine for Missing the Deadline?

If you miss the deadline HMRC will issue penalties. Penalties are split into two types: late filing & late payment.

These penalties will increase over time.  Submit and pay before the deadline to avoid additional charges.

I Need Help Preparing my Self-Assessment – Who Can I Talk to?

We understand that self-assessments are an additional task on top of your workload, and that it can be difficult to know what you can claim. If you need assistance to complete your self-assessment tax return, please contact us.