We build the foundation that makes AI useful for finance.
AI keeps getting better at analysing, writing and doing the work. The challenge is no longer the intelligence — it is making sure the AI gets the right financial data, understands how it fits together and knows which rules apply. That foundation is what Compounder builds.

Financial data is too important to be guessed at.
When AI tools became good enough to work with finance, we saw the same thing happen everywhere: someone exports a general ledger, uploads it to a chat and gets an answer that looks convincing. The next week a colleague does the same thing, with a different export and a different definition of EBITDA, and gets a different answer.
The problem is not the AI. The problem is that it receives raw data without context: no group relationships, no eliminations, no definitions, no permissions, no audit trail. Everything a finance function spends years getting right.
Compounder is the layer between the business systems and the AI that carries that context. We calculate once, according to your organisation's rules, and make the result available in any AI tool. The AI does the work. We make sure the finances behind it are right.
Four principles that shape how we build.
An answer you would show the board.
Every figure carries its definition, its source system and its voucher. If something cannot be traced, we do not present it as fact.
We are not building our own AI.
Claude, ChatGPT, Copilot and whatever comes next get better every quarter. We do not pick an AI for you. We make sure your finances are ready for all of them.
Permissions are not a setting, they are a foundation.
Who may see what is decided in Compounder, once, and follows you whichever tool you use. A question about a company outside your permissions gets no answer, not a number.
Simple for one company. Capable for a hundred.
A one-person company should be running in minutes without knowing what consolidation means. A group with reporting and audit requirements should find everything it needs in the same product.
Want to talk to us?
Questions about the product, partnerships with business systems, or if you want to work with us. We answer ourselves, usually the same day.