WhiteBooks vs IRIS GST: API comparison

A vendor-neutral, side-by-side comparison of WhiteBooks and IRIS GST — two GSP-certified Indian platforms for GST return filing, e-Invoice IRN generation, and e-Way Bill operations. IRIS is the enterprise-consultancy heavyweight; WhiteBooks leads on published pricing, first-party SDK breadth, self-serve onboarding, and KSA ZATCA support.

At a glance

CapabilityWhiteBooksIRIS GST
GSP certification (GSTN, IRP, NIC) Yes Yes
GST return filing (GSTR-1 / 3B / 9) All 12 return types Comprehensive returns + reconciliation
e-Invoice IRN generation <100ms typical, bulk up to 1,000/call Yes
e-Way Bill (NIC) — Part-A + Part-B + extend Full coverage Yes
KSA ZATCA Phase-2 e-Invoicing Dedicated API Limited / EU+UAE focus
Official SDKsJava (Maven) · Node.js (npm) · Python (pip)REST + sample code; SDK breadth varies
Public OpenAPI 3.0 spec /openapi/index.jsonDeveloper portal (gated)
Pre-built ERP connectorsSAP · Oracle · MS Dynamics 365 · TallySAP · Oracle · custom (services-led)
Published entry pricingTalk to sales (Starter) — on /about/pricingQuote-based; enterprise contracts
Enterprise SLA99.99% uptime · burst rate · dedicated capacityEnterprise SLA negotiated
Compliance & securityISO 27001 · DPDP Act · TLS 1.2+ · OAuth 2.0 · SHA256-RSAISO 27001 · TLS 1.2+ · OAuth 2.0
Self-serve sandboxFree · apisandbox.whitebooks.inOn request via sales
Target customerSMB → mid-market → enterpriseLarge enterprise + GST consultancies

When to pick WhiteBooks

Pick WhiteBooks when you want a self-serve, published-pricing path to GST + e-Invoicing + EWB at scale. Annual plans start at Custom pricing with free sandbox; first-party SDKs in three languages cover every endpoint; the OpenAPI 3.0 spec is public; comparison content, status, and changelog are all on-domain and indexable. If your business also operates in Saudi Arabia, the ZATCA Phase 2 API is a material differentiator.

When IRIS GST makes sense

IRIS is the right fit for large enterprises with a professional-services engagement, complex multi-entity reconciliation needs, and a procurement preference for enterprise-grade vendor relationships. IRIS has a deep history in GST consulting and an established footprint among large taxpayers. The trade-off is gated documentation and quote-based pricing.

FAQs

Are WhiteBooks and IRIS GST both GSP-certified?

Yes — both are certified GSPs authorised by GSTN.

Which one targets which segment?

IRIS is enterprise-focused; WhiteBooks targets SMBs to mid-market with published pricing, self-serve onboarding, and developer-first SDKs.

How does pricing transparency compare?

WhiteBooks publishes its 4-tier annual pricing on /about/pricing. IRIS is typically quote-based.

What about KSA ZATCA support?

WhiteBooks ships a dedicated ZATCA Phase-2 KSA e-Invoice API. IRIS focuses primarily on India / EU / UAE.

Which has better developer tooling?

WhiteBooks publishes first-party SDKs (Java / Node / Python) + public OpenAPI 3.0 spec at /openapi/index.json. IRIS offers REST + sample code.

This comparison is published by WhiteBooks. Vendor-neutral starting point; confirm current capabilities with both vendors before procurement. IRIS GST is a trademark of its respective owner. Last updated: 26 May 2026.