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HorizonUK Tax Solutions

A Chartered Tax Adviser for life between the UK and South Africa

UK tax returns, residency advice and treaty claims for people moving to South Africa, living there with UK income or pensions, or moving to the UK. Fixed fees, agreed upfront.

See fixed-fee pricing

The Short Answer

Horizon UK Tax Solutions is a Chartered Tax Adviser (CTA) practice in London handling the UK tax side of a move between the UK and South Africa. None of the South African tax outcomes apply until you are UK non-resident under the Statutory Residence Test. Most UK pensions become taxable only in South Africa under Article 17 of the 2002 treaty once you are resident there, while government service pensions stay UK-taxable unless you are both resident in and a national of South Africa. And UK rent and UK property gains stay taxable in the UK after you go, with South Africa giving credit.

Split-year treatment is claimed on the SA109 pages, not the P85, and HMRC's free online service cannot file those pages, which self-filers most often miss or mis-complete. The South African tax year runs from 1 March, so your split UK year and first SARS year never line up and the treaty tie-breaker often settles the overlap. Leave after four or more UK-resident years out of the previous seven, return within five, and the temporary non-residence rules can tax gains and certain income realised while away. Horizon handles all of it on a fixed fee and coordinates a vetted South African adviser for the SARS side.

Everything is handled remotely, with year-round support and direct access to the adviser. You deal with the founder, a CTA with over 10 years of experience including 7 at a Big Four firm. Fees are fixed and agreed in writing before any work starts: non-resident and expat tax returns are £550, personal tax returns start from £350, complex returns from £750, and advisory work is quoted as a fixed figure upfront. Never by the hour. The practice is rated 5.0 on Google from 19 reviews, with clients across six continents. The first step is a free 30-minute clarity call, and you will know where you stand before committing.

What We Do

Handled for you, end to end

  • Statutory Residence Test review, then the departure-year return with the SA109 pages and split-year claim that HMRC's free online service cannot file.
  • Treaty relief claims so UK personal and occupational pensions are paid without PAYE once you are treaty-resident in South Africa under Article 17.
  • NRL1 applications and the annual non-resident landlord return for a kept UK property, with the Personal Allowance claimed where you are entitled.
  • The 60-day Capital Gains Tax report when UK residential property sells, with rebasing that can limit the gain to growth since April 2015.
  • Arrival-year planning for people moving to the UK from South Africa: arriver day counts, split-year cases and FIG regime eligibility.
  • Coordination with a vetted adviser in South Africa for SARS registration, provisional tax and local filings, while Horizon leads the UK position.

Free In-Depth Guides

Guides for South Africa, if you want the detail first

Browse all guides

Country Guides

Moving to South Africa from the UK: the 2026/27 tax guide

South Africa taxes its residents on worldwide income at 18% to 45%, but generous rebates, a 40% capital gains inclusion rate and a pensions article that hands taxing rights to South Africa make the corridor kinder than the headline rates suggest. The UK exit still decides everything, from the Statutory Residence Test to the 10-year inheritance tax tail.

9 min read · Reviewed August 2026

Residency & the SRT

UK Statutory Residence Test (SRT) Explained

The Statutory Residence Test decides, tax year by tax year, whether you are UK resident. Days, ties and work patterns all count, and the answer drives everything else in your cross-border position.

13 min read · Reviewed July 2026

Residency & the SRT

Split-Year Treatment Explained: UK Tax in the Year You Move

Split-year treatment divides the tax year you move into a resident part and a non-resident part, so you are not taxed as a UK resident for the whole year of your move.

11 min read · Reviewed July 2026

Non-Resident Landlords

NRL1 Form, NRL2 and Non-Resident Landlord Tax on UK Rent

UK rental income stays taxable in the UK however far away you live. What changes when you move abroad is how the tax is collected: the Non-Resident Landlord Scheme, form NRL1, your allowances and your filing route.

16 min read · Reviewed September 2026

Leaving the UK

Leaving the UK: a tax guide for people moving abroad

Leaving the UK does not automatically end your UK tax obligations. Getting the timing and the paperwork right is the difference between a clean break with a refund and an unexpected bill years later.

15 min read · Reviewed July 2026

Foreign Income

Double Tax Relief UK: How to Avoid Being Taxed Twice

How double tax relief UK works in 2026/27: Foreign Tax Credit Relief, treaty and unilateral relief, the residence tie-breaker and how to claim on SA106.

8 min read · Reviewed June 2026

Self Assessment

Expat Self Assessment: UK Tax Returns from Abroad

Living abroad does not switch off your UK tax return. This guide explains who still files, which pages non-residents need and the deadlines that apply from overseas.

13 min read · Reviewed July 2026

Quick answers for South Africa

Our Promise

Fixed fees, agreed in advance

We confirm your fee in writing before any work begins. You always know exactly what you are paying, billed as a fixed amount, never in arrears by the hour.

What this work costs

Non-resident and expat tax returns are £550 fixed. Personal tax returns start from £350 and complex returns from £750. Advisory and project work, such as residency planning and capital gains strategies, is quoted as a fixed fee agreed upfront, scoped to your situation. All fees are agreed before work begins.

See full fixed-fee pricing

Common Questions

Honest answers, before you book

More questions? Read our full FAQ.

Ready When You Are

Start with a free clarity call

Book a free clarity call and we will talk through your situation and confirm a fixed price in writing: no obligation, no pressure, and no surprises.

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Prefer email? Reach us at jordanonraet-wells@horizonukts.com

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