Home › Services › Self Assessment

Self Assessment accountant

Your tax return, prepared and filed by people who do it every day

For sole traders, landlords, directors and anyone HMRC asks to file. We do the work, check it carefully and file it early, so you never overpay and never miss a deadline.

HMRC agent Filed before the deadline Every allowable expense checked

Start your fixed fee quote Book a free call

A Self Assessment tax return tells HMRC about income you have not already been taxed on, and works out what you owe. It sounds simple, but the rules around expenses, payments on account and deadlines catch a lot of people out. We take the whole thing off your plate, make sure you claim everything you are entitled to, and file it well before 31 January, so it is never a worry.

Who it is for

Self employed sole traders, freelancers and contractors
Landlords with rental income, including second properties and holiday lets
Company directors and higher earners with dividends or extra income
People with total income over £150,000, or anyone caught by the High Income Child Benefit Charge
Anyone who has had a letter from HMRC asking them to file

How it works with us

Tell us about you. A quick chat or a few questions so we know your income, situation and goals.

Send your records. Share them whatever way suits you, and we tell you exactly what we need.

We prepare and explain. We draft your return, claim every allowable cost, and talk you through the figures.

You approve, we file. Once you are happy, we submit to HMRC and tell you exactly what to pay and when.

What is included

A complete, fixed fee service

Full preparation of your return
A careful review of allowable expenses
Your figures explained before filing
Filed with HMRC, early
Clear reminders of what to pay
A dedicated accountant to ask any time

Documents you will need

Most people already have these to hand, and we confirm exactly what applies to you.

Records of your income, such as invoices, sales or rental income
Your business or allowable expenses, and any receipts
Any P60, P45 or P11D from employment
Bank interest, dividends and other untaxed income
Pension contributions and Gift Aid donations
Last year’s tax return, if you have one

Common mistakes we help you avoid

Missing the 31 January deadline. HMRC charges an automatic £100 penalty the moment you are late, with more added over time. We file early so this never happens.

Forgetting payments on account. Many people are surprised by the extra payment due in January and July. We tell you the full picture up front.

Leaving expenses unclaimed. Use of home, mileage, equipment and more are often missed, and you end up overpaying. We check properly.

Key deadlines

5 October, register for Self Assessment if it is your first year
31 October, paper returns due
31 January, online return and any tax owed due, plus the first payment on account
31 July, second payment on account, if you make them

A worked example

A self employed designer with £48,000 profit and £9,200 of allowable expenses has a taxable profit of around £38,800. After the personal allowance, that is roughly £7,640 in income tax and Class 4 National Insurance on the current rates. We claim every allowable cost first, then tell you exactly what to set aside. Try your own figures on the Self Assessment calculator.

Pricing

Self Assessment returns are charged as a clear fixed fee, agreed before we begin. The exact price depends on the complexity of your return, for example multiple income sources or rental properties. There are no surprise bills. See the fixed fee quote for more.

Frequently asked questions

Who has to file a Self Assessment return?

You usually need to file if you were self employed and earned more than £1,000, you rented out property, you had untaxed income such as dividends, savings or investments, you had to pay the High Income Child Benefit Charge, or your total income was over £150,000. Being a company director does not by itself mean you must file, but you usually will if you take dividends or have other untaxed income. If you are not sure, we will check for you, free.

How much does it cost?

A clear fixed fee, agreed before we start. The exact price depends on how complex your return is, for example multiple income sources or rental properties.

I have left it late, can you still help?

Yes. As long as we have your information in time, we can prepare and file quickly. If you have already missed a deadline, we can also help with penalty appeals where there is a reasonable excuse.

What if I have income from more than one source?

Very common and no problem. Employment, self employment, rental income, dividends and more can all sit on the one return, and we make sure each is handled correctly.

Do you deal with HMRC for me?

Yes. As your agent we file on your behalf and can deal with HMRC for the work we do for you, so you are never left on hold.

Get your tax return off your plate

A tailored fixed quote in minutes, or a friendly call with no obligation.

Start my quote Book a call

Fixed fee quote

Tell us a little about you

Pop in your details and we will come back with a clear fixed fee, usually within one working day. No obligation, and we never share your details.

Thank you, your details are on their way

We will be in touch shortly, usually within one working day, with the next steps and a clear fixed fee.

Self Assessment

Done properly, filed early

Fixed fee, agreed before we start. No surprises.

Start your fixed fee quote Book a free call

One dedicated accountant

Every allowable expense checked

Reviewed before you file

Filed before the deadline

Useful links

Self Assessment calculator →Deadlines and penalties guide →CIS subcontractor? Claim a refund →

The detail

Who Self Assessment is really for

Self Assessment is for sole traders, landlords, company directors with dividends or other untaxed income, people with side income, and anyone HMRC has asked to file a return. The common worry is the same in every case. You are not certain which figures belong on the return, you are anxious about missing the 31 January deadline, and you do not want to overpay because an allowable expense was left off. We take the whole job off your hands, check it carefully, and file it early so there are no late nights and no surprises.

What you will need

Your Unique Taxpayer Reference, often called your UTR
Your National Insurance number and your Government Gateway sign in details
A record of your income for the tax year, such as invoices, sales summaries or rental statements
Your business expenses with receipts, or a tidy spreadsheet if you already keep one
Details of any employment income with the P60 or P45, and any P11d for benefits
Statements for savings interest, dividends and any other untaxed income
Records of pension contributions and Gift Aid donations you have made
Any CIS deduction statements if you work as a subcontractor

Worked example

Priya, a self employed designer

Priya earns £45,000 from her design work in 2026/27 and has £6,000 of allowable expenses, leaving a taxable profit of £39,000. After the £12,570 personal allowance, £26,430 is taxed at the 20 per cent basic rate, giving income tax of £5,286, with Class 4 National Insurance added on top. Because this is her first busy year and the bill is over £1,000, HMRC also asks for payments on account towards next year. She pays the £5,286 for the year plus a first instalment of £2,643 by 31 January, then a second instalment of £2,643 by 31 July. We show every figure clearly and set out the dates well ahead, so she can put the money aside in good time.