Self Assessment Tax Return in Thames
- Rating 4.9/5
- 500+ clients
- HMRC-compliant filing
What Our Clients Say?
Hear from self-employed clients about their experience with our affordable, reliable, and HMRC-compliant tax return service in London.
How Our Self Assessment Tax Return Service Works
Submit Your Information
Send us your income records, invoices and expense receipts through our secure online portal — from your phone or laptop, wherever you are in the UK.
We Prepare and Review Your Return
A qualified accountant completes your return, reviews every allowable expense and relief, and sends it to you for approval before anything is filed.
File with HMRC and Confirm Submission
We submit your Self Assessment (SA100 plus SA103 for self-employment income) to HMRC and send you written confirmation — job done, no deadline stress.
Why Choose Our Self Assessment Tax Return Accountants in Thames?
Affordable Fixed Fees
A clear starting price and a confirmed quote before we begin — no hourly billing, no hidden extras.
Qualified, Experienced Accountants
Your return is prepared and reviewed by qualified accountants who specialise in self-employed tax.
Fast & Personal Support
Talk to a real accountant who knows your file — by phone, WhatsApp or email, not a call centre.
HMRC-Compliant Accuracy
Every figure checked against HMRC rules, so you file correctly, claim what’s yours and stay penalty-free.
What Our Self Assessment Tax Return Service Includes
Tax Return Preparation
Full preparation of your Self Assessment, including the SA100 and the SA103 self-employment pages.
Expense and Relief Review
A line-by-line review of allowable expenses — mileage, home office, tools, travel — so you never overpay.
HMRC Submission
Secure online filing with HMRC, plus confirmation of receipt and a summary of tax due and deadlines.
Ongoing Support
Advice on payments on account, National Insurance and deadline reminders, so next year is even easier.
Who Is This Self Assessment Tax Return Service For?
Freelancers & Sole Traders
Designers, consultants, drivers, online sellers and gig workers — we handle irregular income, mixed expenses and first-time registrations with HMRC.
CIS Subcontractors
Tradespeople paid under the Construction Industry Scheme — we reconcile your CIS deductions, claim your refund and file everything correctly.
Partnerships & Side Incomes
Business partners and employees with a self-employed side income — we combine all your income sources into one clean, compliant return.
We Find the Expenses Most Self-Employed People Miss
- Vehicle mileage, fuel and travel costs
- Home office and working-from-home allowance
- Tools, equipment and professional subscriptions
- Phone, internet and software costs
- Accountancy fees and business insurance
Behind on your return?
HMRC charges an automatic £100 penalty for late Self Assessment filing, with daily fines and interest if the delay continues. If your self employed tax return is overdue, act now — we prepare and submit late returns fast, liaise with HMRC on your behalf, and advise on payment plans to spread what you owe.
Frequently Asked Questions
Straight answers about self-employed tax, registration and our fixed-fee service.
Our service includes reviewing your income and allowable expenses, preparing your Self Assessment Tax Return, checking the information for accuracy and submitting it to HMRC. We handle the preparation and filing so you don't have to deal with the technical details. Everything is done online for your convenience.
You may need to file if you're self-employed, a sole trader, a freelancer, a contractor, a landlord, a company director or someone with additional income. Not everyone in these situations automatically needs to file, so it's best to check your individual circumstances. We can help you understand whether a return is required.
You provide your income and expense details, and we review the information before preparing your return. We then check everything for accuracy and submit it to HMRC on your behalf. The process is straightforward and designed to be stress-free.
You'll need to provide details of your income, such as self-employment earnings, rental income or other taxable income, along with records of allowable expenses. We'll guide you on exactly what's needed for your situation. Having your records organised makes the process quicker.
Yes, we review your records to identify allowable expenses that can be claimed on your Self Assessment Tax Return. Many self-employed people miss relevant expenses, so we make sure appropriate claims are included. This helps ensure your return reflects your actual business costs.
We prepare your return carefully and check all the information for accuracy before submitting it to HMRC. Our accountants stay up to date with HMRC requirements to help keep your return compliant. You get professional support throughout the process.
The deadline for online Self Assessment Tax Returns is 31 January following the end of the tax year. If you're filing for the first time or need help meeting the deadline, we can assist. It's important to file on time to avoid penalties.
Getting started is simple. Just get in touch with Cheap Tax Returns and provide your income and expense details. We'll take care of the rest, from preparation to submission. Our online service is available to taxpayers in Thames.