Tax Engine calculates the correct indirect tax treatment for every transaction in real time, across 190+ jurisdictions. Sub-200ms, one data model, and built to scale with your business without rebuilding as you grow.
The right tax decision, every time
Open architecture, one data model
Slots cleanly into checkout, billing, invoicing, and AP/AR through a versioned API. The same data model powers every Fonoa AI module you connect.
Tax calculation at speed
Sub-200ms tax determination applied at the transaction level, with no impact on your checkout or invoicing flows.
Global rules, always current
Tax logic across 190+ jurisdictions kept up to date automatically. No rate tables, no manual updates, no engineering tickets when regulations change.
Easily configurable to your business
Custom rules, overrides, and logic adjustments without raising a ticket. Tax Engine bends to your business model, not the other way around.
Built-in threshold monitoring
Track revenue thresholds automatically. Know when a registration obligation is approaching before it becomes a compliance problem.
Full transparency
Every determination comes with a clear breakdown of what was calculated and why.
Fast to go live. Even faster to run.
How teams use Tax Engine
Launching into new markets
Handles the local tax logic from day one for new jurisdictions. No rebuilding or local rule research needed. One engine, global coverage, including the US.
Handling complex transaction flows
Calculates the right treatment automatically when your product has marketplace, subscription, or cross-border complexity.
Keeping AP/AR consistent
Applies the same logic across every touchpoint from customer to supplier based on one central configuration.
Don't just take our word for it.
Why companies around the world prefer Fonoa AI.
“Fonoa AI is a core piece of indirect tax infrastructure.”
“Fonoa AI is one of the few platforms that truly understands digital economy businesses and supports the full indirect tax lifecycle.”
“When we talk about scaling, we want to automatically trigger an API to see if the tax ID is valid or not. Fonoa AI's API was a huge differentiator.”
“Fonoa AI's solutions aren't just saving us time, they're helping us stay ahead of regulatory change, globally.”
Rated by the people who rely on us
