AI platform for global indirect tax

Tax infrastructure that connects the full indirect tax lifecycle on one platform. Your team sets the rules. AI handles the rest, automatically, across every jurisdiction.

Tax Platform

Four solutions. Every indirect tax obligation. One platform.

Global tax infrastructure that runs autonomously. One data model across the entire indirect tax lifecycle. AI executes every workflow while your team stays in control.
Validate

Global tax ID validation

Real-time, 120+ countries, search by name, fuzzy matching.

Tax Engine

Fast tax determination

VAT, GST, Sales Tax across 100+ jurisdictions. Sub-200ms. API-first, configurable without engineering escalation.

E-Invoicing

Unified e-invoicing API

One standard model across all mandates. Accredited government connections. Ultra-low rejection rates.

Tax Return

Automated return filing

Multi-country. Full lineage from return box to source transaction. Native e-invoicing connection.

Knowledge
new

Global tax legislation at your fingertips

Living global tax intelligence layer. Answers complex questions in minutes with cited sources.

Audit
new

Access and ask your tax data anything

Audit readiness from weeks to minutes. All your tax data at the push of a button.

Agents
Coming soon

AI-driven end-to-end tax compliance automation

AI agents execute the full compliance lifecycle. Humans supervise and approve.

Rated by the people who rely on us

Built on trust.
Measured in results.

100%
Customer retention

Every customer who started 2025 with us renewed.

97%
Ease of doing business

G2 reviewers highlighted end-to-end collaboration and availability.

94%
Quality of support

G2 reviewers highlighted
response times and expertise.

4.6/5
Gartner Peer Insights rating

Independent reviews from
verified enterprise users.

Customer stories

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 Fin

36

countries

58.8%

reduction in errors

100%

automated validation

Fonoa is one of the few platforms that truly understands digital economy businesses and supports the full indirect tax lifecycle.

Wei Jie Siow
Tax Director at Coda

90%

faster tax calculation

4

week implementation

2M

transactions per year

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
Staff Technical Program Manager at Wellhub

33%

reduction in tax ID validation tickets

15%

submitted IDs caught as invalid

#1

API speed vs. other vendors

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

480

hours saved per year

95+

countries live

100s

corrected VAT IDs
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