Excellon EXACT: A GST API Provider (GSP) Solution for Enterprise GST Compliance
Simplify GST compliance with Excellon EXACT, an SAP-certified GST API Provider (GSP). Automate e-Invoicing, e-Way Bills, GST returns, and indirect tax compliance with secure APIs designed for businesses of all sizes.


Recognized GSP
as trusted GSP
GSP in 2016 1st Batch
Trusted by the World’s Leading Enterprises for E-Invoicing, E-Way Bill & GST Automation













Why We Are the Best GST API Provider in India
SAP-Certified GSP Architecture
Engineered by an authorized GST Suvidha Provider to ensure flawless, native compatibility directly within your SAP ecosystem.
Unified Compliance Platform
Manage e-Invoicing, E-Way Bills, and complete GST returns seamlessly through a single, consolidated technology stack.
High-Volume Throughput
Battle-tested APIs designed to process massive enterprise data loads securely, backed by strict uptime SLA commitments.
Real-Time Regulatory Sync
Automated, continuous synchronization with GSTN network mandates guarantees your operations remain uninterrupted.
Join 2000+ Global and Indian businesses who’ve found their peace of mind with Exact
A unified, robust, and scalable solution for all your GST compliance needs.
Enterprise Ready SAP certified GSP API solution
Trusted and certified by SAP, ensuring compatibility and seamless integration with SAP systems for GST compliance.
One stop GSP solution
A comprehensive platform for e-invoicing, e-way bills, and GST return filings under one roof. As a premier GST API service provider, we handle your end-to-end tax workflow.
Large data volume processing
Efficiently manages high transaction volumes with enterprise-grade performance and speed.
Real-Time Regulatory Updates
Stay compliant effortlessly as the platform is continually updated to reflect the latest GST regulations and amendments.
Cloud-powered efficiency
Leverage enterprise-grade cloud infrastructure for real-time data processing and secure, uninterrupted operations.
Highly scalable and customisable
Adapt the Solution to your business’s growth. Easily customisable to meet unique needs of your enterprise and scale effortlessly.
Seamless Integrations with Rich APIs
Enable ERP system connectivity with advanced e-invoicing API and e-way bill API integration for automated data handling.
Near ZERO Downtime
Experience unmatched reliability with 99.9%+ actual delivered uptime for all your compliance operations.
24*7 Support
Expert assistance via email and voice to ensure seamless business continuity whenever you need it.
Absolute Data Security
Your compliance data remains fully secure, heavily encrypted, and never exposed with Excellon Exact.
Multi-GSTIN Management
Centrally manage multiple GSTINs under a single PAN, streamlining compliance and reporting for pan-India enterprise operations.
Dedicated Developer Sandbox
Accelerate your ERP integration safely with a fully equipped testing environment and comprehensive API documentation before going live.
EXACT GSP Solutions – Choose from Four Distinctive Options
Transform your GST headaches into hassle-free compliance with a simple, modern, and feature-rich solution built for enterprise agility in India.
SAP® Certified EXACT PASS
Direct, SAP-verified API integration designed for enterprise SAP ERP environments needing native GST automation.
EXACT PASS
High-speed API connector for custom ERPs, billing tools, and enterprise databases for automated e-Invoicing & EWB.
EXACT PASS+
Enhanced API framework equipped with end-to-end cryptographic payload security for maximum data protection.
EXACT Suite
All-in-one web portal for end-to-end GST return filing, 2B automated reconciliation, and multi-GSTIN management.
Robust Security

Perimeter Security
- 24*7 Log Maintenance
- Vulnerability Assessment & Penetration Testing
- Product certification & Annual Security Audits as per GSTN guidelines
Network Security
- Virtual Private Cloud Deployment - Network Filtering
- Firewall - Limited Ports
- Multiprotocol Label Switching Network to exchange data with GSTN
Endpoint Security
- MAC Id Filtering
- IP Filtering
- Client Certificate
Application Security
- Separate app layer and DB layer as per ISO 27001
- Secure coding standards & version controls of source code
- Database Management & Monitoring
- Firewall between App and DB layers
- Single/Multi-tenant databases
- Various layers of testing
Trusted by Enterprise Leaders
Finance, IT and SAP teams share what changed after moving e-invoicing, e-way bill and GST work to Excellon Exact.
We have been using Excellon Exact API integrated with our SAP software, and the experience has been excellent. The real-time data accuracy, fast response times, and seamless connectivity with SAP have significantly improved our operational efficiency. Their support team is also prompt and knowledgeable, ensuring minimal downtime and quick resolutions.
This is to express my gratitude for the Excellent work done by Excellon Exact Team to map e-invoicing and e-waybill process with SAP Public cloud environment. The greatest advantage of working with the Excellon Exact team was not just their proficiency over technology but their expertise in the domain. We always have the best experience with Excellon Exact. Thank you for your support for the use of e-invoicing and e-waybill platform along with GST reconciliation.
We have been using Excellon Exact for SAP integration with E-Invoice and E-Way Bill processes, and the experience has been exceptional. The platform seamlessly integrates with SAP S/4HANA, ensuring accuracy, compliance, and timeliness in our statutory reporting. We sincerely appreciate the collaboration and would highly recommend Excellon Exact to any enterprise seeking a reliable and scalable E-invoicing solution integrated with an ERP.
I would like to extend my sincere thanks for the excellent support and service you’ve provided for e-invoicing and e-waybill generation. Thanks to your robust solution, we’ve been able to raise e-invoices and e-waybills smoothly and efficiently. The reliability and responsiveness of your system have truly helped streamline our operations, and your team’s support has been commendable. We appreciate your continued partnership and look forward to more successful collaboration ahead.
We have been using Excellon’s E-invoicing solution integrated with our SAP system, and our experience has been extremely positive. The system is stable, efficient, and ensures seamless compliance with GST regulations. Downtime has been practically zero, and the support team has been responsive and helpful whenever needed. It has significantly streamlined our invoicing process.
Our experience with Excellon Software has been very satisfactory. Their GSP API services are reliable, efficient, and well-supported by a responsive technical team. The onboarding and integration process was smooth using our SAP CPI , and the team has consistently provided timely assistance and support whenever required specially Suraj. We value their commitment towards maintaining stable services and supporting our GST compliance operations effectively. Our SR/Ticket/Incident Requests gets logged immediately after sending the Email to Techsupport and response time is also very less. Patches and I-flow update intimation are getting in time. We expect the same level of support in future.
We are highly satisfied with the services provided by Excellon as our GST Suvidha Provider (GSP). Their seamless support in the generation of e-invoices and e-way bills, backed by strong integration between SAP and the GSP platform, has significantly improved our operational efficiency. The ticket-based issue resolution mechanism is prompt and effective, ensuring faster turnaround times and minimal business disruption. Additionally, the customer support team is responsive, knowledgeable, and always ready to assist whenever required. Another key strength is the reliability of their systems, with very minimal downtime experienced during our association. Overall, Excellon has proven to be a dependable technology partner for our GST compliance requirements.
We have had a positive experience with the GSP services offered by Excellon Software. The solution has contributed significantly to improved compliance, accuracy, and reporting within our pipe and steel manufacturing operations. It has integrated effectively with our SAP system, enabling seamless tax data flow across production, dispatch, and invoicing processes. The support provided by Excellon has been professional and consistent, helping us streamline operations and strengthen statutory compliance across multiple plant locations.
We have had a positive experience GSP services offered by Excellon Software. The solution has contributed to better compliance and efficiency during billing process and has integrated effectively with our SAP S/4HANA Cloud Public system. The support provided by Excellon has been professional and consistent, helping us improve statutory compliance while keeping it as standard as possible.
Experience the Power of an Advanced GST API Provider
Elevate your business with Excellon EXACT, a SAP-certified GST API Provider (GSP) delivering secure, reliable, and scalable GST automation solutions. Simplify e-Invoicing, e-Way Bills, and GST compliance with enterprise-ready APIs.
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