GST invoices without the GST arithmetic
CappsAI Studio is free GST billing software for service businesses, freelancers and traders. Your invoice shows your GSTIN and your customer's, HSN/SAC codes and the place of supply. The app decides CGST + SGST or IGST from both states, and totals use exact decimal maths, rounded half-up. The AI never calculates money.
- Quote to invoice in one click: no retyping when the customer accepts.
- Recurring invoices for retainers and AMC contracts, monthly, quarterly or yearly.
- Payment tracking: record UPI, bank or cash payments as they arrive and the invoice moves to partly paid or paid by itself.
- Payment details on every invoice: enter your bank and UPI details once.
- Your own numbering (for example INV-1007) and default payment terms.
- Share as a PDF, a link or on WhatsApp; on Premium, email invoices and payment reminders from your own address.
Invoices with or without GST
Not GST-registered yet? Freelancers can make invoices without GST, numbered automatically, with payment reminders. See the invoice app for freelancers.
Learn the rules
Read the GST invoice format guide (every mandatory field, with a free template) and CGST, SGST and IGST explained.
What's free and what's paid
| Feature | Free ₹0 | Pro ₹99 | Premium ₹299 |
|---|---|---|---|
| GST tax invoices | ✓ | ✓ | ✓ |
| Recurring invoices | ✓ | ✓ | ✓ |
| Payment tracking & balance due | ✓ | ✓ | ✓ |
| Custom invoice templates | – | ✓ | ✓ |
| Email invoices & reminders from your address | – | – | ✓ |
| Remove "Created with CappsAI" | – | – | ✓ |
Prices are per month and exclude 18% GST. Every new account gets Premium free for 7 days, with AI included; afterwards it moves to Free unless you choose a plan. Nothing is charged automatically.
Where it's not the right fit
Studio doesn't keep accounting books (ledger, P&L), doesn't track inventory and doesn't collect payments for you: invoices show your bank and UPI details and you record what's paid. If you need those, an accounting or inventory product is a better fit.