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Self-Assessment Tax Returns London

Expert self-assessment tax return services. We prepare and submit self-assessment tax returns for individuals, self-employed, landlords, and other taxpayers. Contact our self-assessment team today.

Self Assessment - Acumon

Self-Assessment Tax Return Services

Expert self-assessment tax return services. We prepare and submit self-assessment tax returns for individuals, self-employed, landlords, and other taxpayers. Our experienced tax team will ensure your self-assessment tax return is accurate, complete, and submitted on time, minimising your tax liability while ensuring full compliance with HMRC requirements.

Who Needs to Complete a Self-Assessment Tax Return?

You may need to complete a self-assessment tax return if:

  • Self-Employed: You are self-employed with income above £1,000 (trading allowance threshold)
  • Landlords: You receive rental income from property
  • High Income: Your income exceeds £100,000
  • Multiple Income Sources: You have income from multiple sources
  • Capital Gains: You have capital gains above the annual exemption
  • HMRC Requirement: HMRC has asked you to complete a tax return

Self-Assessment Tax Return Services

  • Self-Assessment Preparation: Complete preparation of your self-assessment tax return
  • Income Tax Calculation: Accurate calculation of income tax liability
  • Expense Claims: Maximising allowable expense claims to reduce tax liability
  • Capital Gains Tax: Calculation and reporting of capital gains tax
  • Tax Return Submission: Electronic submission of tax return to HMRC
  • Tax Payment Planning: Advice on tax payment deadlines and payment on account

Self-Assessment Deadlines

Important self-assessment deadlines:

  • 31 January: Deadline for online tax return submission and tax payment
  • 31 October: Deadline for paper tax return submission
  • 31 July: Second payment on account deadline
  • 5 October: Deadline to register for self-assessment if you need to complete a return

Self-Assessment for Self-Employed

Our self-assessment services for self-employed individuals include:

  • Preparation of self-employed pages of tax return
  • Calculation of trading profits and losses
  • Maximising allowable business expense claims
  • Capital allowances claims for business assets
  • National Insurance contributions calculation
  • Tax planning to minimise self-employment tax liability

Self-Assessment for Landlords

Our self-assessment services for landlords include:

  • Preparation of property income pages of tax return
  • Calculation of rental income and expenses
  • Maximising allowable property expense claims
  • Property tax planning and optimisation
  • Capital gains tax on property disposals
  • Stamp Duty Land Tax (SDLT) advice

Why Choose Acumon for Self-Assessment?

  • Extensive experience in self-assessment tax return preparation
  • Expert knowledge of income tax, capital gains tax, and self-assessment rules
  • Proactive tax planning to minimise your tax liability
  • Efficient preparation ensuring timely submission
  • Clear communication and explanation of your tax position
  • Ongoing support and advice on self-assessment matters

Integration with Other Services

Our self-assessment services integrate seamlessly with our other services:

Frequently Asked Questions

A self-assessment tax return is a form you submit to HMRC to report your income, gains, and claim tax reliefs and allowances. You need to complete a self-assessment if you're self-employed, a landlord, have income from savings and investments above certain thresholds, or have other income not taxed at source. The deadline for online submission is 31 January following the tax year end, with paper returns due by 31 October.

You need to complete a self-assessment if you're self-employed with income above £1,000, a landlord with rental income, have income from savings and investments above £10,000, receive income from abroad, have capital gains above the annual exempt amount, or HMRC has asked you to complete one. If you're unsure whether you need to complete a return, we can help determine your obligations.

The deadline for online self-assessment tax returns is 31 January following the end of the tax year (which runs from 6 April to 5 April). Paper returns must be submitted by 31 October. Any tax due must be paid by 31 January. Late filing and payment can result in penalties, so it's important to submit on time. We can help ensure your return is submitted before the deadline.

You'll need details of all income sources including employment income (P60, P11D), self-employment income and expenses, rental income and expenses, savings and investment income, pension contributions, charitable donations, and any other income or gains. You'll also need records of expenses, capital gains, and any tax already paid. We can help you gather all necessary information and ensure nothing is missed.

Yes, you can claim allowable expenses to reduce your tax liability. For self-employed individuals, you can claim expenses that are wholly and exclusively for business purposes. Landlords can claim expenses related to letting property. Common expenses include office costs, travel, professional fees, and equipment. We can help identify all allowable expenses and ensure you're claiming everything you're entitled to.

Missing the self-assessment deadline can result in penalties. Late filing penalties start at £100 and increase for longer delays. Late payment penalties are also applied, along with interest on any tax due. If you've missed a deadline, it's important to file and pay as soon as possible to minimise penalties. We can help you get up to date and ensure future returns are submitted on time.

Next steps

Get in touch with our self-assessment team to discuss your self-assessment tax return requirements. Our experienced team will provide expert self-assessment services tailored to your needs.