For UK tax professionals
Test it. Then score it.
We publish an accuracy benchmark for GAIN Tax, scored against expert reference answers. Now we are opening it up. Ten firms bring their own questions, put them through the tool, and grade the answers against the same criteria we use. Your results go into the published benchmark. Your name goes on it only if you want it to.
The deal
You test GAIN Tax on your own questions and score how it does. We give you the tool and put your results into the benchmark.
Your part
Around 20 real UK tax questions, run through the tool and scored against our published criteria. An afternoon's work.
What you get
Free access while you test, a discount after, and real influence over the standard for tax research AI.
The round
Ten firms only. Small enough that every submission moves the benchmark.
Takes two minutes
What a place on the panel gives you
Ten firms. The bar for UK tax AI is set with you, not for you.
01
Test it before you commit
Put a leading UK tax AI through your own hardest questions, on your terms, and see exactly where it holds and where it slips.
02
Shape AI for the profession
Your questions and scores go into a public benchmark the profession will read. You help set what accurate tax AI has to mean, and push the whole field toward tools tax professionals can actually trust.
03
Be seen as an early mover
Release your name and your firm appears on the published benchmark as a founding reviewer, a visible signal to peers and clients that you test your tools and adopt technology early.
04
Keep the tool, at a preferential rate
Free access while you test, then a discount held for your firm, plus early influence over what we build next.
You score each answer the way we do
Correct
Clears the bar
Right in law, on the right tax year, calculation sound, and the citation supports the point.
Partially correct
Right, with a gap
The core answer holds with no critical failure, but a detail is missing or a citation is imprecise.
Incorrect
Fails a critical test
Wrong in law, miscalculated, on the wrong tax year, misgrounded, or fabricated.
Three gates
Law · tax year · calculation
A failure on any one of these caps the result, whatever else the answer gets right.
Ten places in this panel
UK tax professionals who take accuracy seriously enough to test it. Two minutes to apply, and we reply either way.
Real answers from the tool
Actual output, trimmed for length. Every claim carries its source.
Asked
What is the Business Asset Disposal Relief rate from 6 April 2025, and what about from 6 April 2026?
Answered
The BADR rate of Capital Gains Tax is 14% for disposals on or after 6 April 2025, and it rises to 18% for disposals on or after 6 April 2026.
The rate sits in s.169N(3) TCGA 1992, as amended by Finance Act 2025 s.8, with the two dates set by s.8(3) and s.8(4) to (6). HMRC's Capital Gains Manual confirms both figures.