Fonoa

Fonoa (legal entity Fonoa Technologies Ltd, registered in Ireland, company number 677236) operates a platform for global indirect tax compliance. Its products span Validate (real-time tax ID validation with name search and fuzzy matching, marketed as covering 120+ countries on the homepage and 100+ countries elsewhere, checked against official government databases), Tax Engine (VAT, GST and sales tax determination across 100+ jurisdictions with sub-200ms API response), E-Invoicing (a single API mapped to a standard model across mandates, with accredited government connections), and Tax Return (multi-country automated return filing with lineage from return box to source transaction). Newer modules include Knowledge, a global tax legislation intelligence layer that answers questions with cited sources, and Audit, which makes tax data queryable; an "Agents" capability for end-to-end AI-executed compliance with human supervision is listed as coming soon.

The company positions itself as tax infrastructure built on one data model across the full indirect tax lifecycle, in contrast to legacy providers organized around ERP integrations and batch reporting. Company materials cite coverage of 190+ jurisdictions for tax calculation (countries and U.S. states), e-invoicing for millions of sellers on global marketplaces, and large-scale transaction processing. Named customers include Canva, Uber, Netflix, Nebius, Booking.com, Coda, Wellhub, Remote and Fin.

Fonoa also publishes regulatory commentary (for example on UAE e-invoicing and Luxembourg's proposed mandatory domestic B2B e-invoicing) and maintains a security program covering encryption in transit (TLS), credential hashing, third-party penetration testing, a vulnerability disclosure program, and GDPR compliance.

Founding story

According to the company, Fonoa was founded by three Uber alumni who observed that manual processes could not keep up with the tax obligations of a fast-scaling digital business and that cross-border rules change too quickly to be handled compliantly without automation. The founders assembled a developer team to build an always-current platform that automates tax workflows in the background so customers can focus on market expansion.

Business model

Fonoa sells software to businesses as tax infrastructure, delivered via APIs and a dashboard, with modular solutions (Validate, Tax Engine, E-Invoicing, Tax Return, Knowledge, Audit) that can be adopted individually or as a single platform. Sources do not disclose pricing terms.

Traction

Company-reported figures include tax determination across 190+ jurisdictions, tax ID validation in 100+ countries (120+ on the homepage), e-invoicing for 1M+ sellers on global marketplaces, and 500 million transactions processed annually (the May 2026 announcement states more than a billion transactions annually). Fonoa reports 100% customer retention for customers who began 2025 with the company, a 4.6/5 Gartner Peer Insights rating, and G2 scores of 97% for ease of doing business and 94% for quality of support. Customer-cited results include up to 90% faster tax calculation, a four-week implementation and 2M transactions per year (Coda), 58.8% error reduction across 36 countries (Fin), 33% fewer tax ID validation tickets (Wellhub), and 480 hours saved per year across 95+ live countries (Remote).

Latest developments

On 2026-05-28 Fonoa announced a $110 million Series C led by Headline with new investors Eurazeo and Forestay Capital and existing investors Index Ventures, OMERS, Coatue and Dawn Capital, plus the acquisition of PwC's Indirect Tax Edge platform; capital is earmarked for AI development and integrating Edge. In August 2026 the company published product updates introducing the Knowledge module and new Validate and E-Invoicing features, and it has announced Audit and a forthcoming Agents product.