For most GST and Indirect Tax Professionals, January isn’t just about fresh starts – it’s a month packed with filing deadlines, vendor follow-ups, and the stress of reconciliations as the financial year comes to an end. 

At Vayana, our conversations with multiple GST Professionals reveal one requirement in common – they want technology that simplifies compliance, not adds to it. With GST collections reaching ₹22.08 lakh crore in 2024-25, the demand for robust Compliance APIs has never been higher.

Let us understand some of the pain points. Delayed Vendor Return Filing

A taxation head from a leading manufacturing company shared that ITC worth lakhs remained stuck because vendors missed filing deadlines. The organisation had done everything right, but its working capital was tied up because vendors it trusted hadn’t filed their returns. 

When your ERP shows 800 active vendors but 8 haven’t filed GSTR-1, that’s lakhs stuck in ITC! APIs that fetch vendor filing data after deadlines help teams identify risky vendors proactively, enabling timely follow-ups.

Manual Reconciliation Across States

One taxation head from a large FMCG company explained: The company operates in 15 states. Manually consolidating data from each GSTIN takes the team almost a week. By the time mismatches are identified, it’s too late to fix them before filing. 

What’s the solution? APIs!
Application software performs reconciliation, but APIs enable it by fetching data from GSTN for each location. APIs pull the data; reconciliation software processes it to identify mismatches and incorrect claims.

Incorrect ITC Claims and Penalties

With the Invoice Management System, recipients can now reject or hold invoices. A GST head from a construction company explained that if a contractor submits an invoice that does not match the actual work completed – such as using the wrong GSTIN or billing for materials that were never delivered, the organization has the right to reject that invoice.

Late filings incur penalties under Section 47: ₹10,000 per return plus 18% interest. For fraud, penalties reach 100% of the tax evaded. Another Taxation Head shared, how a key supplier hadn’t filed returns for three months. The issue was discovered when ITC was rejected, a considerable amount that could not be claimed. APIs that verify invoice details against GSTN records catch these issues in real time.

What Taxation Heads Want from APIs

Real-Time Validation

Taxation Leaders across organizations want APIs that provide real-time invoice validation to avoid mismatches. Errors need to be caught at entry, not three months later during audits, explained a pharma CFO. APIs facilitate live data exchange from ledgers and GSTR-2B for instant reconciliations, ensuring audit-ready data from day one.

Bulk Processing Without Downtime

One client shared how in December 2024, 15,000 odd invoices across 12 GSTINs were processed in the final week. The previous GSP’s system slowed to a crawl, and the deadline was nearly missed.

Choosing a Reliable GSP matters. Vayana GSP maintains 100% uptime with 250 transactions per second capability. With e-invoicing, IMS, and GSTR-3B hard-locks live, businesses need API-based filing to save hundreds of man-hours monthly.

Data Security and Audit Trails

A manufacturing taxation head emphasized – During the last audit, three weeks were spent reconstructing data manually because proper audit trails were not available. It was a nightmare for him and his team.

If your organisation’s ERP doesn’t provide robust encryption and audit capabilities, choose a GSP with these features built-in. The GSP should ensure sensitive data remains protected while maintaining complete, easily retrievable audit trails.

ERP-Ready Integrations

A logistics CTO explained how connecting SAP to GST Filing required extensive custom coding. Every regulatory change needed IT support. The tax team should not depend on IT for basic compliance.

Vayana GSP acts as plug-and-play for SAP DRC (Document and Reporting Compliance) and is SAP’s priority choice for GST compliance integration. This eliminates technical burden and accelerates implementation.

Why choose Vayana GSP?

Vayana GSP integrates Data, ERPs, and the GSTN ecosystem seamlessly. As one of India’s leading GST Suvidha Providers, Vayana works with over 100 Application Service Providers and 1,000+ corporates for GST, E-Way Bill, and E-Invoicing.

With 100% uptime capability, Vayana handles bulk processing during peak periods while maintaining complete security and audit trails. This infrastructure enables taxation teams to shift from reactive firefighting to proactive compliance management.

The futureis API-First

As Indirect Tax teams evolve into data-driven roles, Compliance APIs are becoming the digital infrastructure for finance operations. The future involves tighter controls, real-time data, and automation-led compliance, with AI driving anomaly detection while APIs make filing faster and more reliable.

GST heads aren’t just seeking tools – they’re seeking reliability, automation, and accountability. Conversations with taxation leaders reveal they want APIs that enable smarter work, catch errors before penalties, handle peak loads without breaking, and integrate seamlessly with existing tools.

Those who invest in robust API infrastructure today, will adapt best to tomorrow’s regulatory changes efficiently, while maintaining the accuracy that Modern GST Compliance demands.

To know more about Vayana GSP and other GST Compliance Solutions, please write to us at [email protected].