Why Global Tax Consulting
Peace of mind with UK taxes.
Global Tax Consulting is a UK tax advisory firm for expats, digital nomads, non-resident landlords and people moving to or from the UK. It was founded in April 2023 and is led by Emma McDermott, ATT, who has been a member of the Association of Taxation Technicians since 2020, previously worked at Deloitte, and is published in Tax Adviser magazine.
Rated 5.0 on Google and 4.9 on Trustpilot
Two different jobs
Not a criticism — a specialism
local accountant
Global Tax Consulting
Who they work with
Everyone in the local area
Expats and nomads, only
Fees
Hourly, invoiced afterwards
Fixed, agreed before we start
SA109 residence pages
Often not supported
Filed as standard
Meetings
Office hours, in person
Any timezone, online
Your documents
Email and post
Secure portal, always open
live & work in one country? local.
live & work globally? GTC.
How we work
A simple, transparent process from start to finish
We make international tax simple with a clear, structured process so you know exactly what to expect at every stage.
Fixed fees
Agreed upfront before we start. A change in scope is the only thing that changes the fee, and only with your agreement.
A clear process
You always know which step you are on, what we need from you and what happens next. No silence for three weeks followed by a form you do not understand.
Everything in one portal
Upload documents, sign forms, ask questions and see progress — from Lisbon, Dubai or a train somewhere. Nothing gets posted, nothing gets lost.
International only
We only work with people who travel across borders or hold assets across them. No local bookkeeping, no payroll, no company accounts.
By the numbers
Earned, not claimed
240
Google and Trustpilot reviews
50+
Countries served
ATT
Qualified advisors
100%
Online, any timezone
“
With the right advice, international tax doesn’t have to be complicated. In fact, some of the biggest opportunities to optimise your tax position and protect your wealth arise while you are a global citizen.
Emma McDermott ATT qualified advisor
Founded Global Tax Consulting in April 2023
The process
You’ll always know which step you’re on.
01
Tell us your situation
A short form, not an interrogation
Fixed fee quoted upfront
Usually back within one working day
No obligation to proceed
02
We do the work
Everything through the portal
Questions asked in plain English
Draft sent to you to approve
No silence, no surprises
03
Filed and confirmed
Submitted directly to HMRC
Confirmation and copies to you
Payment dates set out clearly
Diarised again for next year
TaxPilot
The digital nomad tax app built for remote work
TaxPilot by Global Tax Consulting is an educational tax app for digital nomads, remote workers and globally mobile professionals navigating global tax rules.
It takes the guesswork out of the where, when and how of international tax helping you understand your position, manage residency risk and stay compliant wherever remote work takes you.
📚 Tax index
📍 Track residency
🌎 Connect with experts
Our reviews
Expats rate us 5.0 on Google and 4.9 on Trustpilot
240 reviews across Google and Trustpilot from expats and digital nomads.
★★★★★
I then had two terrible experiences with two sets of UK-based accountants, both of whom swore that they understood how the UK-US tax treaty worked (they didn’t)
Claire
UK and US taxpayer (Google review)
★★★★★
After dealing with unreliable firms in the past, finding someone as trustworthy as Emma has been a breath of fresh air. She has completely restored my faith in accountants.
Thais
Switched firms (Google review)
★★★★★
I worked with Emma McDermott at GTC to file my UK taxes and resolve a complex tax situation that previous accountants had struggled with. Emma and the team at GTC were responsive, efficient, and communicative throughout the process.
Muriel
Expat living abroad (Google review)
★★★★★
Emma McDermott was of a great help clarifying a complex case of US/UK tax implications for which I couldn’t get any help from previous Tax advisors I contacted.
Miguel
UK and US (Google review)
★★★★★
I am an expat in a large automotive company and the tax service they provided me with was really poor so I asked Emma for support. She really went above and beyond for a very reasonable price.
Etienne
Corporate expat (Trustpilot review)
FAQs
Working with GTC
Is Global Tax Consulting a good UK expat tax adviser?
Global Tax Consulting is a specialist UK expat tax adviser with facts you can check. Our Founder, Emma McDermott ATT, trained at Deloitte and has been a member of the Association of Taxation Technicians since 2020. The firm is registered with HMRC as a tax agent and supervised for anti-money laundering by the ATT. Clients rate us 5.0 on Google (135 reviews) and 4.9 on Trustpilot (105 reviews), checked October 2026. We only do UK tax for people whose lives cross borders, and every fee is fixed before work starts. If your case needs a tax return in another country, we will tell you before you pay so you can bring in a local adviser.
What makes you different from a normal accountant?
Focus. A good local accountant handles company accounts, payroll, VAT and personal tax for people who live where they work. We do none of that. We do UK tax for people whose lives cross borders, which means residence, treaties, split years and the reliefs that go with them — every day, for every client.
Do you only work with people outside the UK?
Not quite. We work with people leaving the UK, people arriving in it, and people moving between countries. What our clients have in common is a cross-border position, not a particular address.
How do fixed fees work?
We look at your situation, tell you what the work involves and quote a fixed fee before anything starts. If the scope genuinely changes we agree a new figure with you first. You will never receive an invoice you were not expecting.
How do I actually work with you day to day?
Through the portal. You upload documents, we ask questions, you approve drafts and sign electronically.
Are you qualified?
Yes. Emma McDermott, our founder, has been a member of the Association of Taxation Technicians (ATT) since 2020. Global Tax Consulting is registered with HMRC as a tax agent and is supervised by the ATT for anti-money laundering purposes.
Is an ATT the same as a CTA?
No. ATT is the qualification of the Association of Taxation Technicians, gained by exam and practical experience and focused on UK tax compliance and practical tax work. CTA is the Chartered Tax Adviser qualification of the Chartered Institute of Taxation. Emma holds the ATT and has worked on cross-border UK tax cases since 2020. Our work covers UK residence, split-year treatment, non-resident tax returns, non-resident capital gains, double tax treaty claims and disclosures. If a case needs advice outside that scope, we say so before you pay.
Which UK expat tax advisers have the best reviews?
We can only speak for ourselves. Global Tax Consulting is rated 5.0 on Google from 135 reviews and 4.9 on Trustpilot from 105 reviews (checked October 2026), and every Google review so far is five stars. When you compare UK expat tax advisers, look at independent platforms such as Google and Trustpilot rather than testimonials on a firm's own website, check how many reviews there are and how recent they are, and read what reviewers say about clear explanations and response times. You can read all of our reviews on Trustpilot and Google using the links above.
Who will advise me at Global Tax Consulting?
Emma McDermott, ATT, the firm’s founder. Emma has been a member of the Association of Taxation Technicians since 2020, previously worked at Deloitte, and reviews and signs off every piece of client work. You can check her membership in the ATT’s “Find a member” directory.
protect your wealth
Work with a UK tax firm built for expats
Tell us where you are, where you’re going and what you earn. We will tell you exactly where you stand and what it will cost to sort out.