Self Assessment in Portsmouth
Complete your Self Assessment in 8 minutes. Claim allowable expenses and submit directly to HMRC.
- File in minutes from any device
- Claim allowable expenses with confidence
- Real-time tax estimate as you go
- MTD-ready for 2026
Portsmouth
File your Self Assessment in Portsmouth in 8 minutes. Track income, claim allowable expenses, and submit to HMRC with QTax.
Why Portsmouth self-employed choose QTax
Built for UK HMRC rules with a simple, fast filing experience.
HMRC-ready and MTD-safe
Stay compliant as Making Tax Digital rolls out in 2026.
Track expenses as you go
Capture receipts and organize expenses from your phone.
Real-time tax estimate
See what you owe before the deadline and avoid surprises.
Common expenses you can claim
Everyday costs that Portsmouth freelancers can usually deduct
How to File Your Tax Return
Follow these simple steps to complete your Self Assessment
Gather Your Documents
Collect income records, receipts, and expense statements
Enter Income & Expenses
Add your earnings and claim allowable expenses with our guided flow
Review Your Calculation
See exactly how much tax you owe with real-time calculations
Submit to HMRC
File your tax return directly to HMRC in minutes
Key Deadlines for 2024/25 Tax Year
Do not miss these important dates
5 April 2025
Tax Year Ends
Calculate your final income and expenses
5 October 2025
Register for Self Assessment
If this is your first year self-employed
31 January 2026
Online Filing Deadline
Submit your tax return and pay any tax owed
6 April 2026
MTD Starts (GBP 50k+)
If your income exceeds £50,000, you must use MTD software
Late Filing Penalties
1 day late: GBP 100 fixed penalty
3 months late: GBP 10/day up to GBP 900
6 months late: 5% of tax owed or GBP 300 (whichever is higher)
12 months late: Additional 5% or GBP 300
Plus interest on any tax paid late. Avoid these costs by filing early with QTax.
Frequently Asked Questions
Answers to common questions about Self Assessment in Portsmouth
Do I need to register for Self Assessment in Portsmouth?
Yes if you have self-employment income or other untaxed income. Location does not change HMRC rules.
Can I claim home office or travel expenses in Portsmouth?
Yes. If you use part of your home for work or travel for business, those costs are usually allowable.
When is the Self Assessment deadline for Portsmouth freelancers?
The online deadline is 31 January after the tax year ends. QTax keeps you on track.
Do I need an accountant in Portsmouth?
Not necessarily. QTax handles calculations and submission directly to HMRC.
Ready to file your tax return?
Join thousands of UK sole traders who trust QTax for Self Assessment