Last reviewed: 30 May 2026
Quick summary
- Yes, many people can do their own tax return when the facts are straightforward and records are clear. You should consider accountant support if guessing would be involved.
- Check the tax year, income source, records and threshold before relying on a broad rule.
- Use the preparation checklist on this page before speaking to an accountant.
Direct answer
Yes, many people can do their own tax return when the facts are straightforward and records are clear. You should consider accountant support if guessing would be involved.
What this means in practice
- DIY means you still need evidence for figures.
- You can correct some returns after filing, but it is better to get the main figures right first.
- A short accountant review may be enough for some people.
The best next step is usually to gather the facts before asking for advice: income, expenses, dates, software, previous returns and any HMRC letters. That gives an accountant something concrete to review.
What to prepare before speaking to an accountant
- Government Gateway access.
- Income records for each source.
- Receipts and invoices for expenses.
- Previous tax return if one exists.
- Questions you cannot answer from official guidance.
Examples of how the answer can change
Doing your own return can work when you understand each income source, have evidence for each expense, and are comfortable checking HMRC guidance before submitting.
It becomes riskier when you have rental income, self-employment and employment together, capital gains, foreign income, company dividends or unclear expenses.
The useful pattern is to separate facts from judgement. Facts are things like dates, turnover, software, invoices, bank statements, ownership and deadlines. Judgement is where a rule has to be applied to those facts. The more judgement involved, the more valuable a focused accountant conversation becomes.
How to use this guide before you speak to anyone
Collect income statements, invoices, receipts, bank records, previous returns and notes on anything unusual before deciding whether DIY is sensible.
Then write down the decision you are trying to make in one sentence. For example, you might be trying to decide whether to file yourself, change software, register for VAT, switch accountant or clean up records before a deadline. A clear question helps an accountant respond more usefully and helps you compare answers from different providers.
Do not treat the first call as only a price check. Use it to test whether the accountant understands the situation, can explain the next step in plain English and can tell you what information they need before giving a firm view.
How to compare your options
It usually helps to compare three routes: doing it yourself, using software or bookkeeping support, and speaking to an accountant. The right route depends on the risk of getting it wrong, how much time you have, whether deadlines are close and whether the answer affects future tax or compliance.
DIY can be sensible when records are tidy, the rules are easy to check and the financial impact is modest. Software can help when the main issue is organisation, recurring transactions or digital records. Accountant support becomes more useful when interpretation, judgement, deadlines or business structure are involved.
When comparing accountants, ask for the scope in writing. A good comparison should tell you what is included, what is excluded, who will do the work, how quickly they respond, what records they need and whether they understand your business type.
A quick quality check before you decide
- Can you explain the issue in one sentence
- Do you have evidence for the figures or records involved
- Have you checked the official guidance linked on this page
- Would a mistake create penalties, extra tax, missed deadlines or messy records next year
- Do you know what you want an accountant to answer
If several of those answers are unclear, the next step is not necessarily a long engagement. It may simply be a short accountant conversation to confirm the right route and avoid building the rest of the year on a weak assumption.
What this guide is focusing on
Use this guide if you are a small-business owner trying to pin down the next practical tax or records decision before speaking to anyone. For Can I do my own tax return, focus on how the rule meets the records, thresholds, software and decisions you actually have in front of you.
What figure, record or decision should you pin down?
Pin down income source, dates, records quality, deadlines, thresholds, software, and whether the issue is simple admin or a judgement call. That gives an accountant something specific to check and stops the conversation becoming a vague discussion about tax in general.
Records to gather
- income totals
- expense categories
- software exports
- HMRC letters
- deadline dates
Real examples for this situation
- A tidy sole trader may be able to file alone, while a growing business with VAT or MTD worries needs a clearer system.
- A missed deadline is different from a pricing decision, even though both may need an accountant conversation.
- A structure decision should use expected future income rather than last year's figures alone.
A common mistake is asking for advice before gathering the figures that decide the answer. The safest pattern is to write down the figure, source, date and evidence before deciding whether DIY, software or accountant support is enough.
When to speak to an accountant
Speak to an accountant if you would need to guess, if you have rental or company income, if you are close to a deadline, or if mistakes could materially affect tax due.
Questions to ask an accountant
- Which parts of this return are risky to do myself
- Can you review rather than prepare the whole return
- What records are missing
- Can this year's setup make next year easier
- What official guidance should I read first
Mistakes to avoid
- Copying last year's figures without checking changes.
- Leaving out small income streams.
- Claiming costs without evidence.
- Submitting because the deadline is close rather than because the return is ready.
Key takeaway
Yes, many people can do their own tax return when the facts are straightforward and records are clear. You should consider accountant support if guessing would be involved. If the facts are not simple, use this as a prompt for a proper accountant conversation rather than a final personal answer.
Official guidance checked on 30 May 2026
Use these links to check current rules, thresholds and deadlines. They were checked during the current content pass, but should be rechecked before important decisions.
Related guides
Related accountancy pages
FAQs
How should I use this guide
Use it to understand the issue, gather useful records and prepare better questions for an accountant.
What should I check before acting
Check current GOV.UK or HMRC guidance, your own records and whether your circumstances have details that change the answer.
When is it worth speaking to an accountant
When the decision affects tax, deadlines, VAT, MTD, company structure, property income, payroll, software setup or anything you are not confident checking yourself.
Keep this current
Tax rules and thresholds can change. Check the linked official guidance and speak to an accountant before making important decisions.