A tax technology consultancy, run by the people who do the work.
We implement, connect and support the systems UK tax and finance teams run their work in: Thomson Reuters ONESOURCE, Alphatax and Alteryx. Two founders, both from the Big Four and from in-house tax, on every project from scoping to go-live and after.
Four jobs, between the vendor and your team
The vendor builds the product. Your team has to run it. The consultancy is what turns one into the other, and keeps it working as the group changes.
Choose
Help a tax or finance team decide which system fits the job, and which it does not need. We implement three product families, so the advice is about what works, not about selling one of them.
Implement
Configure the system to the way the group actually works: entities, periods, charts of accounts, templates, reports, users. Documented and handed over running.
Connect
Join it to the systems either side of it, so the trial balance, the computation, the provision and the disclosures move by API or workflow instead of by hand.
Run
Stay available after go-live: the year-end questions, the new entity, the release that changed a screen, and training as the team changes.
Three product families, and the data around them
ONESOURCE implementation
Tax Provision, Corporate Tax, Statutory Reporting and DataFlow, as an authorised Thomson Reuters implementation partner and Certified Implementer for all four.
ONESOURCE →Alphatax
Corporation tax compliance and provisioning software, as an established Alphatax partner.
Our partners →Alteryx automation
Workflows that move and shape tax and finance data between systems, as a Registered Alteryx Solution Provider Partner.
Alteryx for tax and finance →Tax data management
Collect what no system holds from every entity once, and move what a system does hold without rekeying.
Tax data management →Finance data management
The same two problems in the month-end close: income statements, expense analysis and reconciliations built once and run every period.
Finance data management →Support
Ongoing help and cover after go-live, from one question a quarter to a standing arrangement.
ONESOURCE Support →Direct, from scoping to go-live and after
Mark Hart FCA was a Director of Solution Consulting at Thomson Reuters for the ONESOURCE platform, after Arthur Andersen, Deloitte and an in-house tax role at National Grid. Charlotte Hart FCA CTA was Head of Tax at a large UK-headquartered multinational, after Deloitte. Between them, more than forty years in tax and tax technology, from both sides of the table.
That is who you work with. No delivery team behind us, no handover between the people who scope the work and the people who configure the system, and no overhead to pay for.
About the foundersTaxTech500 Top 50 Firms in Tax Technology 2026
Named in the global Top 50, and winner of the monthly award for Tax Technology Consulting three months running: July, August and September 2026.
About the recognition → Case study From four weeks to four minutes → A multinational group spent four weeks a year reshaping capital allowances data. Two Alteryx workflows now do it in about four minutes.Tax technology consultancy: questions we are asked
What is tax technology?
The software a tax team runs its work in, and the connections between that software and the finance systems around it. For a UK group that usually means a tax provision system, a corporation tax compliance system, a statutory accounts system, a way of collecting data from the entities, and the workflows or APIs that move data between them.
What does a tax technology consultancy do that the software vendor does not?
The vendor builds and licenses the product. A consultancy configures it to your group, connects it to your other systems, migrates the history, trains the team and stays available afterwards. We do that for three product families, so we can also tell you which one fits.
Do you give tax advice?
No. We design and build the systems and the data processes. The tax judgements stay with your team and your advisers, and we work alongside them.
Which products do you implement?
Thomson Reuters ONESOURCE (Tax Provision, Corporate Tax, Statutory Reporting and DataFlow), Alphatax, and Alteryx. We do not implement ONESOURCE indirect tax products.
Who does the work?
The two founders, on every project. There is no delivery team behind us and no handover between a sales conversation and the people who configure the system.
What size of organisation do you work with?
Mostly UK-headquartered groups with in-house tax and finance teams, from a handful of entities to several hundred, including groups with entities and GAAPs across several countries.
Tell us what the team is running, and where it hurts.
Thirty minutes is usually enough to say what we would do, and whether we are the right people to do it.