UK Self-Assessment Tax Return Service
File your UK tax return from anywhere in the world.
At Global Tax Consulting, we specialise in UK self-assessment tax returns for expats, non-residents, and international clients ensuring your filing is accurate, optimised, and submitted on time.
Tick everything that applied to you this tax year:
- Main returnSA100
- ResidencySA109
- EmploymentSA102
- UK propertySA105
- ForeignSA106
- Split-year treatment
- Personal allowance (UK and EEA nationals)
- PAYE refund claim
- Non-Resident Landlord scheme
- Allowable expenses and finance costs
- Double tax treaty relief
- Foreign tax credit relief
Who we file for
UK tax return service for expats & non-residents
The return is the same form. What goes on it depends entirely on the SRT, incomes, gains and double tax treaties.
Settled abroad, still filing here
UK property, a UK pension, dividends from a UK company — non-residence narrows what HMRC can tax, but it rarely removes the obligation to file.
SA109
Status on the record
Residence pages completed and split-year claimed, so your position is documented rather than assumed.
Reliefs
Everything you are entitled to
Personal allowance where eligible, disregarded income treatment, treaty relief and foreign tax credits.
Sa100
Money back where it is owed
Overpaid PAYE and tax withheld at source reclaimed, for the current year and up to four earlier ones.
Non-resident return
Position
UK income continuing after you left
Prepared
Residence pages and reliefs applied
Filed
Submitted to HMRC with claims attached
Outcome
Bill reduced to what is actually due
Non-resident · step by step
What we handle
Every page your UK tax return actually needs
We support individuals worldwide who need to file a UK tax return removing complexity and helping you stay in control of your UK tax position.
Key dates
The 2025/26 filing calendar
Miss the January deadline and the penalty starts at £100 before anyone has looked at what you owe.
5 Oct
2026
Register for Self Assessment if you have not filed a UK return before.
Next up
31 Oct
2026
Paper return deadline, if you are filing on paper rather than through software.
31 Jan
2027
Online filing deadline, plus any balancing payment and first payment on account.
31 Jul
2027
Second payment on account falls due, where payments on account apply to you.
The process
Upload it, forget it, and we’ll tell you when it’s filed.
01
Send us your year
Upload through the secure portal
Income, expenses and travel dates
Last year’s return if you have one
No posting, no printing
02
We prepare and optimise
Residence position established
Every allowable relief claimed
Foreign tax credits applied
Draft sent to you to approve
03
We file, you are done
Filed directly with HMRC
Confirmation and copies to you
Payment amounts and dates set out
Diarised again for next year
Fixed fee
Compliant with HMRC. Lighter on tax.
Done properly, the UK tax return is where your relief gets claimed and you take full advantage of your expat status.
💷 Fixed fees
🏦 ATT qualified
💻 100% online
Why GTC
1,000+ returns filed for expats
01 / EXPERTISE
International tax experts
Cross-border UK tax advice for expats, nomads and mobile professionals in over 50 countries.
02 / TRACK RECORD
200+ five-star reviews
Across Google and Trustpilot. Trusted by individuals worldwide for reliable UK tax support.
03 / PRICING
Fixed fees, agreed upfront
We fix the fee before work begins. You always know what you’re paying and what for.
04 / PROCESS
Everything in one portal
Upload documents, sign forms and message your advisor securely, from any timezone.
I can’t say enough good things about Emma. From day one, she has given me complete 360-degree support through my tax situation. She’s proactive, incredibly responsive, and stays ahead of every deadline.
Romeo, Philippines
Emma was able to understand and deal with a foreign tax credit refund application to HMRC efficiently and without fuss. The GTC platform allows easy document transfer. Emma replies to email queries promptly and with helpful answers.
Zubin, Singapore
Emma was fantastic from the moment I contacted her: prompt responses to emails, knowledgeable, and professional. If you're a remote worker or digital nomad, don't waste your time communicating with anyone else apart from Global Tax Consulting.
James, nomadic
FAQs
Questions we get from expats about self-assessment
Do I need to file a UK tax return if I live abroad?
Often, yes. UK rental income, a UK pension, UK self-employment, reclaiming overpaid PAYE, or claiming split-year or non-resident status all create a filing obligation. Being non-resident changes what goes on the return, not whether you file one.
Why can't I just file it myself on the HMRC website?
When are the deadlines?
Can you reclaim tax I have already overpaid?
I have missed several years. Can you still help?
How do I get my documents to you?
What does it cost?
Work with GTC
Let someone else worry about January
Send us your year and we’ll take it from there. Prepared, optimised, filed and confirmed, with the reliefs claimed that most people never find. Fixed fee, usually back within one working day.