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Tech riderRev. 20 Sept 2026

Fonoa

Ch 536.9of 109Tax Compliance Software
  1. 1Runs onAPI
  2. 2Supported tax typesVAT, GST, Sales Tax
  3. 3Return filingYes
  4. 4Filing support levelautomated
  5. 5Sales tax calculationYes
  6. 6API accessYes
6 lines stated Written from the maker's own pages: fonoa.com
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The Fonoa homepage

Overview

Fonoa is ranked #53 of 109 in tax compliance software on Specifiction, made by Fonoa (Dublin, Ireland). It runs on API.

Compared on tax compliance software

Supported tax types
VAT, GST, Sales Taxfonoa.com
Return filing
Yesfonoa.com
Filing support level
automatedfonoa.com
Sales tax calculation
Yesfonoa.com
API access
Yesfonoa.com

Facts

What it does
Fonoa provides API-first products that automate indirect tax tasks for internet companies, including tax ID validation, tax calculation, invoicing, and reporting.docs.fonoa.com · 11 Oct 2026
Tax calculation
Fonoa Tax determines the tax treatment and amount for domestic and cross-border transactions across 100+ countries.docs.fonoa.com · 11 Oct 2026
Tax ID validation
Fonoa Validate checks tax identities against live government registries in 120+ countries and supports batch validation of 50,000 records.fonoa.com · 11 Oct 2026
E-invoicing
Fonoa E-Invoicing provides one API for e-invoicing mandates in 50+ countries, with support for both accounts payable and accounts receivable workflows.fonoa.com · 11 Oct 2026
Returns and reporting
Fonoa’s API product suite includes invoice generation and real-time transaction reporting to tax authorities where required.docs.fonoa.com · 11 Oct 2026
Audit
Fonoa Audit records transaction decisions and approvals, supports queries across transaction history, and alerts on anomalies.fonoa.com · 11 Oct 2026
Regulatory knowledge
Fonoa Knowledge provides cited answers about indirect tax rules and personalized regulatory alerts connected to the customer’s business profile.fonoa.com · 11 Oct 2026
Integrations
Fonoa’s products share a platform data model; its E-Invoicing page says invoice data can flow into return preparation when Returns is connected.fonoa.com · 11 Oct 2026
Security
Fonoa describes TLS data encryption, managed dashboard access, regular vulnerability assessments, and GDPR compliance.fonoa.com · 11 Oct 2026
Security testing
Fonoa says it engages independent third-party security firms for regular penetration tests and can share reports under NDA.fonoa.com · 11 Oct 2026
Support
Fonoa’s API documentation says customers obtain an API subscription key after onboarding by contacting its technical support team.docs.fonoa.com · 11 Oct 2026
Notable limit
Fonoa says its current API authentication requires a subscription key on every request, and the key is obtained after onboarding.docs.fonoa.com · 11 Oct 2026
Intended customers
Fonoa describes its platform as serving digital businesses that need to manage indirect tax across markets; its about page says its founders saw the challenge while working at Uber.fonoa.com · 11 Oct 2026
Pricing availability
The product pages invite visitors to book a demo; they do not state a price on those pages.fonoa.com · 11 Oct 2026
Tax returns
The homepage describes multi-country automated return filing with lineage from each return box to its source transaction.fonoa.com · 12 Oct 2026
Tax intelligence
Fonoa Knowledge is described as a tax legislation intelligence layer that provides answers with cited sources.fonoa.com · 12 Oct 2026
API integration
Fonoa's API documentation describes a REST API for tax automation products including tax ID validation, tax calculation, invoice generation, and real-time transaction reporting.docs.fonoa.com · 12 Oct 2026
Sandbox limits
The API sandbox has unlimited usage but serves hardcoded data rather than live integrations with tax authorities; the demo environment has limited usage.docs.fonoa.com · 12 Oct 2026
Webhook support
The API supports webhook notifications for transaction results, and Fonoa recommends webhooks over polling.docs.fonoa.com · 12 Oct 2026
Compliance
Fonoa states that it is GDPR compliant and uses independent third-party security firms for regular penetration tests, with reports available under NDA.fonoa.com · 12 Oct 2026
Who it is for
Fonoa says its founders developed the platform after seeing tax automation challenges while working at Uber, and its API documentation describes its products as serving internet companies.fonoa.com · 12 Oct 2026
Company scale
Fonoa's about page states that its tax engine covers 190+ jurisdictions, its tax ID validation covers 100+ countries, and it processes 500 million transactions annually.fonoa.com · 12 Oct 2026

Company

Headquarters
Dublin, Irelandfonoa.com · 28 Sept 2026

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Sources