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GST invoicing · service businesses · IT services

Invoicing Software for IT & Software Service Firms

Domestic GST invoices and zero-rated export bills, TDS reconciled — one system.

For IT services businesses

An IT or software services firm bills two very different ways: domestic clients who deduct TDS, and overseas clients you invoice as an export of services under an LUT with no GST charged. Both have to be right, and both have to reconcile at year-end — which a spreadsheet quietly gets wrong.

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Flat ₹399/month · Unlimited users · No card required · Cancel anytime

How it services billing works

IT-services billing mixes monthly maintenance retainers, project milestones and time-and-material blocks. 399Apps raises SAC-coded GST invoices for domestic clients with correct place-of-supply, and export invoices for overseas clients as a zero-rated supply under LUT — while AR aging and client-wise outstanding keep both revenue streams collectable and clean.

GST & TDS, handled right

Software and IT services fall under SAC 9983 / 998314 at 18% GST domestically. Exports of services are zero-rated: with a Letter of Undertaking (LUT) you invoice overseas clients without charging GST, provided place-of-supply is outside India. Domestic corporate clients deduct TDS under 194J — 399Apps records it section-wise for a clean Form 26AS reconciliation.

The billing problems it solves

Different service, same trap — money earned that never quite gets billed or collected. Here's what 399Apps keeps straight for it & software service firms:

Export vs domestic mixed up

Zero-rated LUT export invoices and 18% domestic invoices, each raised correctly.

Place-of-supply errors

Overseas place-of-supply drives zero-rating; out-of-state drives IGST — handled per invoice.

194J left unreconciled

Domestic clients deduct TDS — 399Apps logs it section-wise for the 26AS match.

Milestones and retainers tangled

Project, retainer and T&M invoices tracked with due dates and client-wise AR.

What you get

  • ✓Domestic GST invoices (SAC 9983, 18%)
  • ✓Zero-rated export invoices under LUT
  • ✓Place-of-supply handling per client
  • ✓TDS-on-receipts (194J), 26AS reconcile
  • ✓AR Aging + client-wise outstanding
  • ✓GSTR-1 / GSTR-3B-ready CSV exports

One flat price — the whole team invoices

Most invoicing tools charge per user or per invoice, so growing your practice grows the bill. 399Apps is a flat ₹399/month for your first app and ₹99/month for each additional app — GST invoicing, TDS reconciliation and receivables in one system, unlimited users, cloud or self-hosted. Adding partners, associates or account managers never raises the price.

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FAQ

Invoicing software for it & software service firms — FAQ

Does 399Apps work for it & software service firms? +
Yes. 399Apps (Nidhi Books) is built for the way it & software service firms actually invoice. IT-services billing mixes monthly maintenance retainers, project milestones and time-and-material blocks. 399Apps raises SAC-coded GST invoices for domestic clients with correct place-of-supply, and export invoices for overseas clients as a zero-rated supply under LUT — while AR aging and client-wise outstanding keep both revenue streams collectable and clean.
How does GST and TDS work for it services businesses in 399Apps? +
Software and IT services fall under SAC 9983 / 998314 at 18% GST domestically. Exports of services are zero-rated: with a Letter of Undertaking (LUT) you invoice overseas clients without charging GST, provided place-of-supply is outside India. Domestic corporate clients deduct TDS under 194J — 399Apps records it section-wise for a clean Form 26AS reconciliation.
How much does invoicing software cost for a it services business? +
A flat ₹399/month for your first app and ₹99/month for each additional app or add-on — the same price across India, with no per-user licence and no per-invoice fee. A solo professional and a growing it services firm pay the same base price.
Can I track who still owes me and follow up on time? +
Yes. Every invoice carries a due date, and AR Aging buckets receivables into current, 1–30, 31–60, 61–90 and 90+ days overdue with per-client outstanding — so you chase the slippers before the money is really late, without a manual ledger.
Can I run it on the cloud or on my own server? +
Both. Run 399Apps fully managed on the 399apps cloud with daily backups and an India data region, or self-host it on your own server for complete data ownership. The same invoicing and GST features work either way.
Try 399Apps

Affordable invoicing software for it & software service firms — from ₹399/month

GST invoicing, TDS reconciliation and receivables in one system, with unlimited users. Start your free 14-day trial — no card required.

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