EMAIL SUPPORT
A tax question?
Email us.
Not sure which service you need? Tell us a little about your situation and our team will help.
We’ll reply within 48 hours.
Email us →
Send your question to our team by email.
Loading...
Tax Return Information
File your HMRC Self Assessment easily with Taxsimba's smart tax platform. Stay compliant, minimize errors, and avoid overpaying tax.
Self Assessment made simple with Taxsimba
Our platform is designed to take the stress out of filing your Self Assessment. Instead of navigating complicated HMRC forms, Taxsimba asks you simple questions and handles all the complex tax calculations behind the scenes. We automatically identify allowable expenses so you never pay more tax than you need to. With our authorised accountant filing process, you can submit your return straight from our software with a single click. From sole traders and landlords to high earners, Taxsimba provides the guidance and confidence you need to file accurately, avoid penalties, and get back to what you do best.
Smart Tax Estimator
See your estimated tax bill update in real-time as you enter your income and expenses. No more surprise tax bills in January.
Maximized Deductions
Ensure you claim every allowable expense you're entitled to with built-in guidance on what can and cannot be deducted.
Direct Submission
File your Self Assessment tax return straight to HMRC electronically from within Taxsimba without needing to visit the HMRC portal.
Expert Review Checks
Our system runs automated diagnostic checks on your return before submission to help prevent common mistakes and HMRC inquiries.
Features That Make Self Assessment Easy
Everything you need to complete and file your self assessment tax return accurately and on time.
Automated Tax Calculations
Taxsimba automatically calculates your tax liability in real-time as you log your income and expenses.
Accountant-led external filing
Submit your Self Assessment directly to HMRC from our platform. We are Accountant Led.
Smart Expense Tracking
Log all your business expenses digitally so you never miss a tax deduction and keep proof organized.
Error Checking
Our system runs automatic checks to identify potential anomalies or missing data before you submit to HMRC.
Deadline Reminders
Get automated email and dashboard reminders near the 31 January deadline so you never face late penalties.
Comprehensive Reporting
Generate detailed income, expense, and tax liability reports to understand your overall financial position.
Who Needs to File a Self Assessment?
You must send a tax return if, in the last tax year (6 April to 5 April), any of the following applied:
Self-Employed
You worked for yourself as a sole trader and earned more than £1,000 before taking off allowable expenses.
Partnerships
You were a partner in a business partnership, regardless of the income amount earned.
High Earners
Your total taxable income was more than £100,000, or you claimed Child Benefit and income was over £50,000.
Untaxed Income
You received untaxed income from properties, tips, foreign investments, savings, or dividends.
A tax question?
Self Assessment FAQs
The deadline for online tax returns is typically midnight on 31 January following the end of the tax year. The tax year ends on 5 April.
Yes, Taxsimba is Accountant Led and fully supports direct digital submission of your Self Assessment tax return.
Not at all. Taxsimba is designed specifically for non-accountants. It asks you simple questions and automatically calculates your tax dynamically.
Taxsimba has built-in error checking to catch common mistakes before you submit. If you've already submitted, you normally have up to 12 months from the 31 January deadline to amend your return.
Yes, you can easily log and categorize allowable business expenses throughout the year to ensure your tax bill is accurate.
Get your tax return sorted
Accountant-led Self Assessment support, from start to submission.
Compare prices and what’s included before you choose.
Choose your package, then get started.