The short answer: no, you are not legally required to use an accountant as a sole trader in the UK. But whether you should is a different question — and the honest answer to that one is almost always yes. Here is why.

If you are self-employed in Glasgow and asking this question, you are probably at one of a few moments. Maybe you have just registered as a sole trader and you are wondering what you are actually getting yourself into. Maybe your first Self Assessment deadline is approaching and you are starting to feel the pressure. Or maybe you have been doing your own accounts for a few years and you are quietly wondering whether you have been doing it right.

All of those are good reasons to ask. And we are going to give you a genuinely honest answer rather than the one that just tries to sell you accountancy services.

The Honest Answer: You Do Not Have to, But You Probably Should

HMRC does not require sole traders to use a qualified accountant. You can register as self-employed, keep your own records, and file your own Self Assessment tax return entirely on your own. Plenty of sole traders do exactly that and it works fine for them.

The question is not whether it is possible to do it yourself. The question is whether doing it yourself is actually serving your business well. Because the gap between ‘filed a return’ and ‘filed the best return for my situation’ can be significant — and you are unlikely to know exactly how significant unless someone reviews it.

The most common things sole traders miss are not dramatic errors. They are quiet omissions: an expense category they did not know was allowable, a payment on account they did not plan for, a threshold they did not realise they had crossed. None of them feel catastrophic individually. Together, they add up.

What Changes When You Hire an Accountant

Hiring an accountant as a sole trader is not just about someone else doing your tax return. Here is what actually changes in practice:

You stop guessing what you can claim

HMRC’s rules on allowable expenses are not as simple as they appear. Most sole traders know they can claim mileage and some equipment costs. Far fewer know about the home working flat rate, pre-trading expenses, training that counts as professional development, or the specific rules around phone and broadband if you use them partly for personal use. A good accountant knows all of this and applies it systematically.

You know your tax bill before it arrives

One of the most stressful parts of being self-employed is getting to January and not knowing how much you owe until you sit down to file. An accountant keeps track of your position throughout the year so there are no surprises. You can set money aside with confidence because you know the actual number, not an estimate.

Deadlines stop being a source of anxiety

The Self Assessment deadline is 31 January. Miss it and the penalty is automatic — £100 regardless of whether you owe any tax at all. After three months it escalates further. An accountant manages every deadline on your behalf. You stop thinking about them because they are handled before they arrive.

Your time goes back to your business

If you are spending two to three hours a month on bookkeeping admin, you are spending time that could go to clients, to growth, or simply to not working evenings. That time has a real value. Most sole traders find the cost of an accountant is justified by the time saved alone, before any tax efficiency is factored in.

Making Tax Digital Has Changed the Calculation in 2026

This is an important one if your income is above £50,000, or heading in that direction.

Making Tax Digital for Income Tax went live in April 2026. If you are a sole trader or landlord with qualifying gross income over £50,000, you are now legally required to keep digital records and submit quarterly updates to HMRC through approved accounting software. The traditional once-a-year Self Assessment is no longer sufficient on its own.

The threshold drops to £30,000 from April 2027, and to £20,000 from April 2028. Which means the majority of active sole traders in the UK will be in scope within the next two years.

If you are in scope for Making Tax Digital and you are still using a spreadsheet or paper records, you are not compliant. MTD submissions must go through HMRC-approved software — they cannot be submitted through the HMRC website directly.

Many sole traders who were comfortable filing their own Self Assessment are finding that MTD adds enough complexity — quarterly submissions, approved software, digital record-keeping throughout the year — that proper support is now the simpler option, not the more expensive one.

What Does a Sole Trader Accountant Actually Do?

People often have a vague picture of what an accountant does. Here is the practical version for a sole trader:

• Prepares and submits your Self Assessment tax return — accurately, with all allowable expenses claimed
• Advises on what you can and cannot claim as an expense throughout the year
• Helps you set up and use the right accounting software if you are approaching the MTD threshold
• Submits your Making Tax Digital quarterly updates on your behalf if required
• Tells you how much to put aside each month for your tax bill so January is not a shock
• Explains payments on account — the advance payment system that catches many new sole traders off guard
• Plans around your personal allowance, NI contributions, and any relevant reliefs
• Answers your questions throughout the year, not just at tax time

That last point is worth pausing on. A good accountant is not just a service you use in January. They are someone you can contact when your business situation changes — when your income grows, when you are thinking about going limited, when a client asks you to invoice differently — and get a clear answer from someone who knows your situation.

What Does It Cost, and Is It Worth It?

Sole trader accounting in Glasgow typically costs between £35 and £150 per month depending on the scope of work — from a basic Self Assessment service to full year-round bookkeeping and Making Tax Digital support.

The question of whether it is worth it comes down to three things:

• What are you missing that you do not know about? Most sole traders find at least one expense category they have been under-claiming. The tax saving on a single overlooked category often covers a year of fees.
• How much is your time worth? If you are billing £40 an hour and spending four hours a year on your tax return, that is £160 in opportunity cost — before you factor in the stress of getting it wrong.
• What are the penalties for getting it wrong? Late filing, underpaid tax, and incorrect returns all carry consequences. Professional support eliminates the risk entirely.

For the vast majority of sole traders, the answer is clearly yes. The main exception is someone with genuinely simple finances — a single income source, minimal expenses, no property income — who is comfortable and confident using HMRC’s online tools and has time to stay on top of it. That group exists, but it is smaller than most people assume.

When You Should Definitely Get an Accountant

There are some situations where professional support shifts from sensible to essential:

• Your qualifying income is over £50,000 and you are not yet set up for Making Tax Digital
• You have income from multiple sources — self-employment, rental income, employment, dividends
• You are approaching the VAT registration threshold of £90,000
• You are considering whether to incorporate as a limited company
• You have had a letter from HMRC and you are not sure what it means
• Your records for previous years are incomplete or missing
• You have been self-employed for more than a year and have never had your expenses reviewed

Any one of these situations is a good reason to have a conversation with an accountant before the situation becomes more complicated.

Finding the Right Accountant as a Sole Trader in Glasgow

Glasgow has a healthy supply of accounting firms, but most of them are built around larger clients. Sole traders and small businesses often end up handled by junior staff, passed between advisors, or simply not given the responsive service they need.

What matters when you are a sole trader looking for accounting support in Glasgow:

• You should always speak to the same person — someone who knows your name, your business, and your financial situation
• Responses should be quick — within a day, not three days
• The fee should be agreed upfront and not change without warning
• The advice should be in plain English, not accounting language
• Your accountant should be proactive — telling you about changes like Making Tax Digital before you have to ask

At 1341 Accountancy, we work directly with sole traders in Glasgow and across the UK. You work with Laura and Emma directly — not a junior member of staff — and we provide the kind of year-round support that means January is never a scramble. Our first consultation is free, with no commitment and no pressure.

Frequently Asked Questions

No. There is no legal requirement for sole traders in the UK to use a qualified accountant. You can prepare and file your own Self Assessment tax return. However, most sole traders who do their own accounts miss allowable expenses, underestimate their tax bill, or spend more time on admin than their business can afford. From April 2026, sole traders with qualifying income over £50,000 must also comply with Making Tax Digital, which adds significant reporting obligations that most find easier to manage with professional support.

Sole trader accounting in Glasgow typically costs between £35 and £150 per month, depending on the level of support required. A basic Self Assessment service costs less; full year-round bookkeeping, Making Tax Digital support, and ongoing advisory services cost more. The cost is almost always justified by the combination of tax savings, time saved, and elimination of the risk of penalties for incorrect or late filing.

Making Tax Digital for Income Tax is HMRC’s programme requiring sole traders and landlords to keep digital records and submit quarterly updates to HMRC through approved accounting software. It went live in April 2026 for those with qualifying gross income over £50,000. The threshold drops to £30,000 in April 2027. If you are in scope, you cannot use the HMRC website to submit quarterly updates — you must use approved software such as Xero, QuickBooks, or FreeAgent.

Allowable expenses for sole traders include mileage at HMRC-approved rates, home working costs, equipment purchased for the business, software subscriptions, professional training directly related to your trade, accountancy fees, phone and broadband (business proportion), marketing and advertising costs, and professional subscriptions. The rules are specific to each category and the easiest way to make sure you are claiming everything you are entitled to is to have your expenses reviewed by an accountant.

The best time is as early as possible — ideally before you start trading. The earlier you get the right systems and advice in place, the less you pay to fix problems later and the more you claim from the start. Key trigger points include: registering as self-employed for the first time, approaching the Making Tax Digital threshold of £50,000, approaching VAT registration at £90,000, considering whether to incorporate as a limited company, or reaching the point where managing your own finances is taking too much time.