Self Assessment Accountants
Professional Self Assessment tax return support
Completing a Self Assessment tax return can become complicated when you have multiple sources of income, business expenses, property income, investments or other tax matters to report.
Mysimplytax provides professional Self Assessment support, helping individuals and Sole Traders prepare accurate tax returns, understand their tax position and meet their HMRC filing obligations.
We can help with self-employment income, rental income, employment income, savings and investments, pension contributions and other income that may need to be included on your tax return, while reviewing the relevant reliefs and allowances that apply to your circumstances.
With offices in Bromley and London and a fully digital service, we support Self Assessment clients locally and throughout the UK.
Our Self Assessment Process
We make completing your Self Assessment as straightforward as possible, with a clear digital process from gathering your information through to submitting your tax return to HMRC.

1
Tell us about your tax return
We'll establish the income, expenses and other tax information that needs to be included on your Self Assessment tax return and explain what information we need from you.
2
Provide your information
Send us the relevant records and documents securely, including details of your income, expenses and other information required to prepare your return.
3
We prepare your tax return
Our team prepares your Self Assessment tax return, reviews the information provided and considers the relevant tax reliefs and allowances that apply to your circumstances.
4
Review and approve
We'll provide your completed tax return and tax calculation for you to review, explaining the amount due and relevant HMRC payment deadlines before submission.
5
Submission to HMRC
Once you approve your tax return, we'll submit it electronically to HMRC and provide confirmation that your Self Assessment has been filed.
Who we help with Self Assessment
Self Assessment isn't only for people who are self-employed. We help clients with a wide range of income sources and tax circumstances prepare and submit their annual tax returns.

Landlords
Tax return support for individuals receiving rental income, including relevant property income and allowable expenses.
Company Directors
Self Assessment support for company directors who are required to submit a tax return because of their personal tax circumstances.
Higher & Additional Rate Taxpayers
Tax return support for individuals with more complex income or tax affairs, including multiple income sources and relevant tax relief claims.
Savings, Investments & Dividends
Support reporting taxable savings interest, dividend income and relevant investment income through Self Assessment.
Pension Contributions
Help reporting relevant personal pension contributions and claiming additional tax relief through Self Assessment where available.
Self Assessment and
Making Tax Digital
Making Tax Digital for Income Tax is changing how qualifying Sole Traders and landlords maintain their records and report information to HMRC during the tax year.
If MTD applies to you, you'll need to maintain digital records and submit quarterly HMRC updates in addition to completing the year-end tax return process through compatible software.
Mysimplytax provides complete Making Tax Digital support, including Sage accounting software, digital bookkeeping, quarterly HMRC updates and your annual tax return.
Straightforward Self Assessment fees
Our Self Assessment service is provided on a clear, fixed-fee basis, with the final fee depending on the income sources and tax information that need to be included in your return.
Fees starting from £29/month
Self Assessment FAQs
Need help with your Self Assessment?
Whether you're self-employed, receive rental income or have other income and tax matters to report, Mysimplytax can prepare your tax return and help you understand your Self Assessment position.
Based in Bromley and London, supporting Self Assessment clients throughout the UK.