Fonoa is a global tax automation API platform for VAT, GST, and e-invoicing compliance. See its funding history, product suite, pricing model, and rivals.
Category
Finance
Pricing
Usage-based / Custom, from Contact for pricing
Verified
Not yet
Last updated
July 18, 2026
Founded
2019
Headquarters
Dublin, Ireland
Web AppAPIAI
Overview
Fonoa is a Dublin-headquartered tax technology company founded in 2019 by three former Uber employees, Davor Tremac, Filip Sturman, and Ivan Ivankovic, who built the platform to solve the global tax compliance scaling problem they experienced firsthand at a hypergrowth marketplace.
The company provides API-first infrastructure for real-time tax calculation, tax ID validation, and e-invoicing compliance, used by digital platforms and marketplaces operating across 100+ countries.
Key Features
Fonoa's product suite includes Tax Engine for real-time VAT, GST, and sales tax calculation in 200+ countries, E-Invoicing for compliant electronic invoicing and real-time tax reporting, and Lookup for validating tax IDs across 115+ countries.
In 2026 Fonoa acquired PwC's Indirect Tax Edge platform alongside a $110 million Series C round, expanding its enterprise-grade tax determination capabilities.
Pricing
Fonoa does not publish a fixed rate card. Pricing is usage-based, driven by API call volume or transaction volume processed through the platform, with feature-access tiers layered on top.
Enterprise customers with high or specialized volume requirements negotiate custom pricing directly with Fonoa's sales team.
Key Features
Real-time tax calculation — Tax Engine calculates VAT, GST, sales tax, and other indirect taxes at the moment a transaction occurs, across more than 200 countries.
Global e-invoicing compliance — Generates, transmits, and validates compliant electronic invoices to meet real-time tax reporting mandates across accounts receivable and accounts payable in 100+ countries.
Tax ID validation (Lookup) — Instantly validates VAT, GST, and other tax identifiers across more than 115 countries via a single API.
Single API integration — Replaces country-by-country point solutions with one API that covers tax calculation, invoicing, and ID validation across many jurisdictions.
Configurable tax determination — Tax rules can be configured to match a business's specific product taxability and jurisdictional requirements.
Acquired PwC Indirect Tax Edge technology — Following its 2026 acquisition of PwC's Indirect Tax Edge, Fonoa gained additional enterprise-grade tax determination technology and customer relationships.
Enterprise case-study track record — Published customer stories document measurable ROI, including a reported $45M ROI for a global communications platform and $6.8M in avoided VAT risk for a global cloud provider.
Pros & Cons
Pros
API-first architecture designed for direct integration into checkout, billing, and invoicing flows
Broad global coverage spanning 200+ countries for tax calculation and 100+ for e-invoicing
Founding team's Uber background gives credibility with other high-growth digital marketplaces
Well-capitalized with $110M+ in total disclosed funding and strong investor backing (Index Ventures, Coatue, Headline)
Expanded enterprise capability through the 2026 acquisition of PwC's Indirect Tax Edge
Cons
No published fixed pricing, requiring a sales conversation for exact cost estimates
Usage-based pricing can be harder to forecast than flat-fee software for finance teams
Primarily suited to companies with meaningful transaction volume and engineering resources to integrate an API, less accessible to very small businesses
Competes against long-established incumbents (Avalara, Vertex, Sovos) with deeper enterprise sales and ERP integration history
Pricing
Usage-Based / Custom Contact for pricing Usage-based (per API call or transaction volume)
Frequently Asked Questions
When was Fonoa founded and by whom?
Fonoa was founded in 2019 by Davor Tremac, Filip Sturman, and Ivan Ivankovic, three former Uber employees who experienced firsthand how difficult it is to correctly calculate and report taxes across many countries at scale.
How much funding has Fonoa raised?
Fonoa has raised funding across a seed round (Index Ventures, end of 2020), a $20.5M Series A (2021), a $60M Series B (2022, led by Coatue), and a $110M Series C (May 2026, led by Headline), alongside which it acquired PwC's Indirect Tax Edge platform.
What does Fonoa's platform do?
Fonoa provides APIs for real-time indirect tax calculation (Tax Engine), global e-invoicing and tax reporting compliance (E-Invoicing), and tax ID validation (Lookup) across 100+ countries.
How is Fonoa priced?
Fonoa uses a usage-based pricing model driven by API call volume or transaction volume, with custom enterprise pricing available for businesses with high or specialized needs; it does not publish a fixed rate card.
Who are Fonoa's customers?
Fonoa's published case studies name customers including Zoom, Uber, Booking.com, and Remote.com, generally large digital platforms and marketplaces transacting across many countries.
Who are Fonoa's main competitors?
Fonoa competes with established indirect tax and e-invoicing compliance vendors such as Avalara, Vertex, Sovos, and Thomson Reuters ONESOURCE, though it differentiates through an API-first, developer-native approach built for digital platforms.