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Self-employed accounting guide

  • 3 min read
  • Last updated 15 Apr 2025

Being self-employed means that you work for yourself rather than an employer.

We know that the accounting side of being self-employed isn’t always straight forward, which is why we’re breaking it down for you!

You can thank us later. 😜

Here’s some simple steps of what you’ll need to do when self-employed:

1. Register as a sole trader

First, you’ll want to register as a sole trader. You may be wondering, ‘how do I do this?’ 

Luckily for you, we’ve written a step-by-step guide to registering as self-employed. Check this out here.

But that’s not all, we’ve also answered all the most common questions related to setting up as a sole trader – you can check this out here if needed.

FYI: If you decide you no longer want to work for yourself, you’ll need to let HMRC know so that they aren’t expecting you to file a tax return. 

2. Choose an accounting method

When you register as self-employed, you are given the option between cash basis and traditional accounting.

Choose whichever method works for your business. Cash basis is generally the easiest option as you simply track what goes in and out of your bank account.

Traditional accounting may work for bigger businesses.

3. Set up a business bank account

Get into the habit of separating your personal and business finances as soon as possible.

This will help you keep better track of your business income and expenditure.

4. Record income and expenses correctly

You don’t need to show documents when you file your tax return, but HMRC will ask for them if they ever audit you. For this reason, you should keep all documents and receipts organised.

Keep records for at least 5 years.

5. Look into registering for VAT

Not everyone is required to register for VAT, but you’ll have to register if:

  • You’d like to set up as a LTD company rather than sole trader
  • You anticipate making over £90,000 (the VAT threshold)
  • You want to reclaim VAT on eligible expenses

The value added tax (VAT) rates in the 2025/26 tax year 👇

Tax rate What the rate applies to
Standard rate 20% Most goods and services
Reduced rate 5% Goods and services like children’s car seats and home energy
Zero rate 0% Goods and services like most food, books and children’s clothes

*Businesses earning more than £90,000 in a tax year must register for VAT. See here for more

6. Submit your tax return before January 31st each year

The tax year is a point of confusion for many. Unlike the calendar year, the tax year runs from April to April. If you’re a LTD company, your business “year” can take place during any 12 month period of your choosing, meaning your filing deadline is unique to you and your business.

As a sole trader, things are a little simpler. Take a look at the below table for the important dates and deadlines to get in your diary for the current tax year.

Key dates in the current 2025/26 tax year 👇

Deadline Date Year
Tax year starts 6th April 2025
Tax year ends 5th April 2026
Register for self assessment 5th October 2026
Pay tax bill by PAYE salary 30th December 2026
Self assessment deadline 31st January 2027

🚨 Don’t forget to claim:

7. Understand how Payment on Account works

Payment on Account means you pay your annual tax bill in two instalments. You may have to pay up to 150% the first time, but you can read more about Payments on Account here.

To make it a bit more digestible, here’s a visual:

what is payment on account

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