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  • More
    • HOME
    • FOR BUSINESSES
      • CORPORATION TAX
      • TAX INVESTIGATION
      • VAT RETURNS
      • BOOKKEEPING
      • R&D TAX CREDITS
      • PAYROLL SERVICES
      • BUSINESS ADVICE
    • FOR INDIVIDUALS
      • SELF-ASSESSMENT
      • WILL & PROBATE SUPPORT
      • ESTATE & INHERITANCE TAX
      • PERSONAL TAX PLANNING
      • CAPITAL GAINS TAX
    • WHO WE HELP
      • OVERVIEW
      • CIS CONTRACTOR
      • PARTNERSHIPS
      • LANDLORDS
      • STARTING A BUSINESS
      • SOLE TRADERS
      • LIMITED COMPANIES
    • ABOUT US
      • ABOUT IIA ACCOUNTANTS
      • SWITCHING ACCOUNTANTS
      • FIND THE RIGHT ACCOUNTANT
      • WHAT OUR CLIENTS SAY
      • CONTACT US
    • RESOURCES
IIA Accountants
  • HOME
  • FOR BUSINESSES
    • CORPORATION TAX
    • TAX INVESTIGATION
    • VAT RETURNS
    • BOOKKEEPING
    • R&D TAX CREDITS
    • PAYROLL SERVICES
    • BUSINESS ADVICE
  • FOR INDIVIDUALS
    • SELF-ASSESSMENT
    • WILL & PROBATE SUPPORT
    • ESTATE & INHERITANCE TAX
    • PERSONAL TAX PLANNING
    • CAPITAL GAINS TAX
  • WHO WE HELP
    • OVERVIEW
    • CIS CONTRACTOR
    • PARTNERSHIPS
    • LANDLORDS
    • STARTING A BUSINESS
    • SOLE TRADERS
    • LIMITED COMPANIES
  • ABOUT US
    • ABOUT IIA ACCOUNTANTS
    • SWITCHING ACCOUNTANTS
    • FIND THE RIGHT ACCOUNTANT
    • WHAT OUR CLIENTS SAY
    • CONTACT US
  • RESOURCES

SELF-ASSESSMENT TAX RETURNS

Stay Compliant. Save Time. 

Maximize Tax Efficiency.

Completing your self-assessment tax return can be time-consuming, confusing, and stressful—especially if left to the last minute. At IIA Accountants, we handle the entire process with accuracy and insight, so you can stay compliant and potentially reduce your tax bill.

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OUR SELF-ASSESSMENT SERVICES

Whether you're a sole trader, landlord, contractor, or company director, our expert team ensures your tax return is submitted correctly and on time, without the guesswork.


👉🏻 Full tax return preparation

We prepare and submit your tax return using HMRC-approved software, making sure every detail is accurate and every allowance is claimed.


👉🏻 Accurate tax calculations

We calculate your tax liability and explain exactly what’s due, when, and why—so you’re never caught off guard.


👉🏻 Payment reminders

We notify you in advance of payment deadlines, helping you avoid late payment interest and penalties.

OUR SELF-ASSESSMENT SERVICES

 

  • Tax Savings: We identify tax reliefs and deductible expenses you may be entitled to, ensuring you never pay more than necessary.
     
  • HMRC Correspondence: We act on your behalf in all dealings with HMRC, so you don’t have to.
     
  • Stress-Free Filing: Submitting early gives you more time to plan and reduces end-of-year pressure.
     
  • PAYE Coding (Where Applicable): We can help spread your tax payments via your tax code when available.
     
  • Fixed Fees: Know exactly what you’re paying upfront—no hidden charges.

WHY CHOOSE IIA ACCOUNTANTS ?

 

  • Experienced Tax Experts who understand the UK self-assessment system inside and out 
  • Transparent Pricing with competitive fixed-fee packages 
  • Deadline-Driven so you avoid last-minute panic and fines 
  • Tailored Support for self-employed professionals, landlords, and high earners
     

Let’s Make Tax Time Easy

 With IIA Accountants handling your tax return, you get more time, less stress, and peace of mind knowing it’s done right. 

📩 CONTACT US

Frequently Asked Questions

Please reach us at Info@iiaaccountants.co.uk if you cannot find an answer to your question.

If you miss the deadline for your self-assessment tax return, it's important to speak to your accountant or HMRC as soon as possible. The sooner you rectify the issue and get the tax return filed and tax paid the better. 


If you are late, you'll receive an automatic late filing penalty. You'll also be charged interest on late tax payments.  


If you're filing your Self-Assessment tax return online, the deadline is 31st January. For paper submissions, it’s 31st October.

Filing early has major benefits, less stress, more time to plan, and quicker refunds


📞 0747 162 1612

Copyright © 2025 IIA Accountants - All Rights Reserved.

  • HOME
  • CORPORATION TAX
  • TAX INVESTIGATION
  • VAT RETURNS
  • BOOKKEEPING
  • R&D TAX CREDITS
  • PAYROLL SERVICES
  • BUSINESS ADVICE
  • SELF-ASSESSMENT
  • WILL & PROBATE SUPPORT
  • ESTATE & INHERITANCE TAX
  • PERSONAL TAX PLANNING
  • CAPITAL GAINS TAX
  • OVERVIEW
  • CIS CONTRACTOR
  • PARTNERSHIPS
  • LANDLORDS
  • STARTING A BUSINESS
  • SOLE TRADERS
  • LIMITED COMPANIES
  • ABOUT IIA ACCOUNTANTS
  • SWITCHING ACCOUNTANTS
  • FIND THE RIGHT ACCOUNTANT
  • WHAT OUR CLIENTS SAY
  • CONTACT US
  • RESOURCES

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