Every sole trader remembers their first January. Not the second or the fifth, because by then there is a system. The first one, when the online filing deadline of 31 January stops being a date on a poster and becomes a pile of bank statements on the kitchen table, is the one people describe years later with a slightly haunted look.
The mechanics are not the hard part. HMRC's online return walks you through the boxes. The hard part is everything you were supposed to have done during the year you have just finished: kept invoices somewhere findable, separated business spending from personal, noted which of those card payments in March were stock and which were a birthday present. Reconstructing a year in a fortnight is the real job, and it is miserable.
What you are paying an accountant to do
A common misunderstanding is that an accountant fills in the form. They do, but that is the last hour of the work. The value sits earlier: knowing which expenses you can claim and which you cannot, spotting that you crossed a threshold that changes your position, telling you in October what your January bill will roughly be so it is not a surprise. The form is typing. The judgement is the product.
There is also the payment on account system, which blindsides almost everyone the first time. In broad terms, once you owe enough tax, HMRC asks for a payment towards the following year at the same time. Your first bill can be half as large again as you expected. An accountant will have warned you in advance. The internet, at 11pm on 30 January, will not.
When the fee earns its keep
If your affairs are one employment plus a small side income, you may be fine on your own. The case for paying someone strengthens with every complication: your first full year of trading, income from more than one source, expenses you are unsure about, a home office, a vehicle, anything involving property. Each of those is a place where a wrong guess either costs you money or invites a letter from HMRC, and a single avoided mistake often covers a year-end fee.
Timing matters more than most people realise. Accountants are busiest in December and January, and some stop taking new self assessment clients entirely by late autumn. Approach one in spring or summer, when your deadline is comfortably far away, and you get more attention, more planning, and sometimes a better price.
Starting the search now rather than in January
There are 3,441 accounting firms listed on this site, from sole practitioners who do nothing but self assessment work to larger firms where it is a sideline. For a first return, a small local firm or an online specialist is usually the right size of help. Browse firms near you, or describe your situation and let firms come back to you with a fee.
Whatever you do, do one thing this week: open a separate bank account for the business if you have not already. It is the single change that makes next January survivable, whoever ends up filing the return.
