What we charge
Horizon UK Tax Solutions works on fixed fees only. Personal tax returns start from £350, non-resident and expat returns from £550, and complex returns from £750. Every fee is fixed and agreed before any work starts: we scope your situation on a free 30 minute clarity call, then confirm the exact fee in writing, so you know the full cost before committing to anything. The starting points reflect scope, because a cross-border case can involve residence tests, treaty claims and filings a UK-only return never touches, and the clarity call is where that scope gets pinned down.
How fees should work with any adviser
Whoever you engage, fees should be clear, agreed in writing before any work starts, and matched to a defined scope. The strongest model for most expat work is a fixed fee agreed upfront for a defined piece of work, because it lets you compare advisers and avoids surprises. A fair engagement letter sets out exactly what is and is not included, what triggers extra cost, how disbursements such as filing or registration fees are handled, and how to raise a query or complaint. The thing to be wary of is open-ended hourly billing with no estimate and no cap, because the meter runs without you being able to plan. Our guide to choosing a UK expat tax adviser covers the fee conversation alongside credentials and the checks you can run yourself.
Why the cheapest quote can cost the most
Cost alone should never be the deciding factor. Cross-border cases turn on the Statutory Residence Test, split-year treatment, double tax treaties and the residence-based system that replaced domicile from 6 April 2025, and the cost of getting them wrong falls on you, not the adviser. The cheapest quote from a generalist on a complex cross-border case can be the most expensive outcome once errors and missed reliefs are counted, sometimes across two tax authorities at once. What happens after you say yes, from HMRC authorisation to identity checks and the engagement letter, is walked through in our guide to working with a UK tax adviser from abroad. If you want a firm figure for your own situation, book a free 30 minute clarity call and we will quote a fixed fee before any work starts.