Features

Everything that makes GST billing tedious, handled

The parts that matter most are the ones nobody notices when they work: figures that tie out, numbers that do not skip, and documents that stay what they were on the day you issued them.

GST invoicing

Automatic tax split
Place of supply decides CGST and SGST versus IGST. Total tax is identical either way; only the split changes, and we apply the right one.
Every rate slab
0%, 0.25%, 3%, 5%, 12%, 18% and 28%, plus cess where it applies. A single invoice can mix rates and the per-rate summary still reconciles to the total.
Inclusive or exclusive pricing
Enter MRP-style rates that already contain GST and the tax is worked backwards, landing exactly on the price you typed.
Reverse charge
Tax is reported on the invoice but excluded from the amount payable, since the recipient deposits it.
Round-off and amount in words
Rounded to the nearest rupee with the difference recorded, and the total spelled out in the Indian numbering system.

Documents

Ten document types
Tax invoice, proforma, quotation, estimate, purchase order, delivery challan, credit note, debit note, payment receipt, and non-GST invoice.
Independent numbering series
Each type gets its own gapless series per financial year, allocated when the document is saved so two users cannot collide.
Drafts, edits, duplicates
Prepare work as a draft without consuming your monthly quota, then issue it. Duplicating an invoice starts a fresh draft.
Print, PDF, email, WhatsApp
A print-ready A4 sheet, a PDF through your browser, email to the customer, or a WhatsApp share link with the amount and a view link.

Customers and items

GSTIN validation
Structure and the official mod-36 checksum are both checked, and the state code is read out of the GSTIN to prefill place of supply.
Invoices stay fixed
Names, addresses, and HSN codes are copied onto each document. Editing a customer later never rewrites something you already issued.
HSN and SAC codes
Stored per item and carried onto every line, feeding the HSN summary you need at filing time.
Outstanding balances
Per-customer totals for what has been billed and what is still owed, with the full document history.

Inventory and payments

A stock ledger that reconciles
Opening stock, sales, purchases, and adjustments each write a movement alongside the balance change, in one transaction.
Low-stock alerts
Set an alert level per item and see what has fallen below it on the dashboard.
Seven payment methods
Cash, bank transfer, UPI, credit card, debit card, cheque, and online — each with a reference field.
Part payments
Record any amount up to the balance. Invoice status follows the numbers automatically rather than being set by hand.

Reports

GST summary
Taxable value and output tax by head for any date range, suitable for cross-checking GSTR-1.
HSN and SAC summary
Quantity, taxable value, and tax grouped by code and rate.
Customer and item analysis
Who owes you the most, and which items bring in the most value.
CSV export
A GSTR-1-shaped export with a totals row, UTF-8 with a byte-order mark so Excel opens it correctly.

Security and access

Role-based staff access
Grant specific permissions — invoices, customers, products, payments, reports, settings — per staff member.
Tenant isolation
Every query is scoped to a business you belong to, checked server-side rather than trusting anything the browser sends.
Sessions in httpOnly cookies
Signed JWTs that JavaScript cannot read, with passwords hashed using bcrypt.
Multiple businesses
Run several businesses under one login and switch between them without signing out.

GST Billing Pro prepares invoices and summaries. It does not file returns on your behalf. Verify all tax positions with a qualified GST professional before filing.