Important: FilingFriend provides general informational guidance about UK filing requirements. It does not provide tax, accounting, or legal advice. Always confirm requirements with HMRC or Companies House.
You do not usually need an accountant by law
HMRC allows sole traders to register for Self Assessment, keep their own records, and file their own tax returns. That means the decision is usually practical rather than legal.
If your records are simple and up to date, doing it yourself may be realistic. If your records are messy or your income is harder to classify, outside help can be worth paying for.
When doing it yourself is more realistic
DIY filing is most realistic when you understand your deadlines, keep records throughout the year, and can explain your income and expenses clearly.
It becomes harder when you leave bookkeeping until January, have multiple income streams, or are unsure how HMRC's rules apply to your position.
When an accountant may help
An accountant can help if you want someone else to review the numbers, explain HMRC rules, or keep the filing process moving on time.
Even then, you still need to keep records and stay aware of your own deadlines. Paying for help does not remove your responsibility to act.
Key deadlines
| Action | Deadline | Why it matters |
|---|---|---|
| Register for Self Assessment if required | 5 October after the relevant tax year | Missing the registration step makes DIY filing harder. |
| Online Self Assessment return and balancing payment | 31 January | This is the main deadline that drives the work for many sole traders. |
| Second payment on account | 31 July | Applies if HMRC requires payments on account. |
Official references
FAQ
Can a sole trader file their own tax return?
Yes. Many sole traders do. The question is whether your records and confidence level make DIY filing a sensible choice.
Does hiring an accountant remove my filing responsibility?
No. Professional help can reduce risk, but you still need to provide information and keep track of the deadlines that apply to you.
Next step
Keep the main dates visible
Use the FilingFriend calendar as a quick reminder layer, then return to this guide when you need the fuller explanation or official source links.