
You set the rules, Agents do the work
Capabilities
Full lifecycle automation. Human oversight built in.
Calculates the right tax, automatically
Monitors VAT, GST, and sales tax rules and changes across 150+ jurisdictions to ensure accuracy, no need for human intervention. Always sub-200ms.
Catch new obligations before they apply
Revenue velocity modeling predicts tax registration threshold breach dates and triggers registration workflows in time to act.
Generates approval-ready returns
Agents auto-populate returns from committed transaction data. Your team reviews and approves before anything is filed.
Your compliance state, always visible
Live status across every jurisdiction, entity, and obligation type. Period-end readiness scores, upcoming deadlines, and anomalies surfaced in seconds.
Your team supervises. The system executes.
Agent recommend. You approve. Full audit trail, kill switches, and segregation of duties built in. SOX-ready by design.
Connects to any AI finance workflow
Your AI tools call Agents directly via MCP and get verified tax outcomes back, grounded in real infrastructure rather than an AI model reasoning about tax rules.
How teams use Agents
Use case
What Fonoa solves
Digital services scaling globally
Automate determination and threshold monitoring across 190+ jurisdictions without adding headcount.
Period-end close
Auto-populate returns from committed transaction data, reducing close from days to minutes.
ERP migration or vendor consolidation
Consolidate determination, e-invoicing, and returns onto one API, replacing multiple vendor integrations.
New market entry
Monitor revenue velocity against local thresholds and triggers registration workflows before obligations are breached.
AI finance workflows that touch tax
Serve as the authoritative tax connection point, so any AI tool in your finance stack gets verified determinations, not guesswork.
Client testimonial
Don’t just take our word for it.
Why companies around the world prefer Fonoa.
Fonoa is a core piece of indirect tax infrastructure." —One Jae Paik, Tax Director at Intercom


Client testimonial
Don’t just take our word for it.
Why companies around the world prefer Fonoa.
You have to understand your company's needs. There is no “one size fits all" approach when it comes to e-invoicing." — Alexandra Dubois


Client testimonial
Don’t just take our word for it.
Why companies around the world prefer Fonoa.
When we talk about scaling, we want to automatically trigger an API to see if the tax ID is valid or not. Fonoa’s API was a huge differentiator." — Renan Bastazini


Client testimonial
Don’t just take our word for it.
Why companies around the world prefer Fonoa.
With Fonoa, I don't have to constantly think about invoicing while we grow. That's the best thing that could happen–fully trusting our invoice provider. — Tobias Laber


Client testimonial
Don’t just take our word for it.
Why companies around the world prefer Fonoa.
Fonoa’s solutions aren’t just saving us time, they’re helping us stay ahead of regulatory change, globally." –Kirsten Best, Head of VAT at Remote

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Every customer who started 2025 with us renewed.
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