ISP GST Billing — Tax Compliant

Reviewed by the NowaCRM ISP operations team Last updated: May 18, 2026

Quick answer

GST compliance is non-negotiable for Indian ISPs. Wrong tax calculations, missing GSTIN on invoices, or incorrect HSN codes can lead to penalties and audit scrutiny. NowaCRM handles GST billing end-to-end — from tax configuration to invoice generation to monthly return reports — so you stay compliant without manual effort.

01

Tax Configuration & Components

Configure CGST, SGST, IGST, and cess rates for your services. Create tax groups for different service categories (broadband, IPTV, VAS). Tax is automatically applied based on the subscriber's state vs. your ISP's registered state — intra-state gets CGST+SGST, inter-state gets IGST. Tax rules are maintained per ISP for multi-tenant accuracy.

02

Automatic Invoice Tax Calculation

Every invoice generated by the billing engine includes itemized tax breakdowns. Base amount, taxable value, CGST/SGST/IGST amounts, and total are calculated automatically. Reverse charge, exemptions, and nil-rated items are supported. Tax amounts are precise to two decimal places as per GST rules.

03

GSTIN & HSN/SAC Compliance

Your ISP's GSTIN is prominently displayed on all invoices. HSN/SAC codes are configurable per service type — typically SAC 998422 for Internet telecommunications. Subscriber GSTIN (for B2B) is validated and included on invoices. Sequential invoice numbering follows GST format requirements.

04

Monthly GST Reports

Generate GSTR-1 compatible reports showing outward supplies, B2B vs. B2C breakdowns, and tax summaries. Monthly reports match your accounting period and can be exported for your CA to file returns. Reconciliation between invoiced amount and collected amount helps identify mismatches before filing.

05

Credit Notes & Adjustments

Issue credit notes for refunds, plan downgrades, or billing corrections. Credit notes reference the original invoice and include proper tax adjustments. They are included in GST return reports automatically. Debit notes for additional charges are also supported.

FAQ

Frequently Asked Questions

Is NowaCRM GST compliant?

Yes. NowaCRM generates invoices with GSTIN, HSN/SAC codes, proper CGST/SGST/IGST breakdowns, sequential numbering, and all mandatory fields as per GST invoice rules.

Does it handle inter-state and intra-state tax?

Yes. Tax is automatically applied based on place of supply — CGST+SGST for intra-state, IGST for inter-state transactions.

Can I generate GSTR-1 reports?

Yes. Monthly GSTR-1 compatible reports with B2B/B2C breakdowns and tax summaries are generated automatically for your CA to file returns.

Are credit notes supported?

Yes. Issue credit notes for refunds or corrections with proper original invoice reference and tax adjustments. Automatically included in GST reports.

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ISP GST Billing — Stay Tax Compliant Without the Complexity