Every part of the working day, in one system.

Ten voucher types that share one numbering rule, one print layout and one ledger. Create a quotation, convert it to an invoice, then take a payment — without retyping anything.

• Sales invoice, quotation, proforma and delivery challan
• Sales return, credit note, debit note
• Purchase invoice, purchase order and purchase return
• Convert, duplicate, cancel and restore documents
• Bulk print selected bills with 1–4 copies
• GST, non-GST and export invoices
• Series with prefix, suffix, start number and financial year
• GSTIN check fills state, PAN and address
• Optional vehicle, PO and transporter fields per bill
• Round-off, tax-inclusive prices and HSN/SAC per line
• Tabular A4 layout with tax summary and amount in words

A4 tax invoice

A full-screen counter that stays out of the way. Scan or type, keep several bills on hold and take payment in any combination.

• Barcode scanning with a keyboard-style scanner
• 3*cement style quantities and quick discounts
• Several held bills, resumed with a shortcut
• Split cash, UPI and card on one bill
• Change to return shown before charging
• Thermal 2" or 3" receipt, or A4
• Walk-in customers or lookup by mobile number
• Loyalty points used at the counter
• Keyboard shortcuts for every action
• Staff can be blocked from negative stock

POS counter

Stock is tracked per godown, per batch and — where it matters — per serial number. Every sale, purchase, transfer and adjustment moves the same ledger.

• Multiple godowns and transfers between them
• Batches with manufacturing and expiry dates
• Earliest-expiry stock picked first
• Serial and IMEI tracking, checked for duplicates
• Adjustments and transfers with explicit serials
• Alternate units, like 1 box = 12 pieces
• Low-stock minimum per item and expiry warnings
• Barcode labels with a format per category
• Bulk receive with pasted Excel or CSV lines
• Stock check screen with buy, sell and margin
• Purchase scanning from a photographed bill
• Partial receipts against a purchase order

Inventory · batches

One address book for customers and suppliers, with the balance, the ledger and the documents in one place.

• A party can be a customer, a supplier, or both
• Opening balance and credit limit
• Warning at billing time when the limit is crossed
• Running ledger with every bill and payment
• Items bought and sold by that party
• Shared statement link that needs no login
• WhatsApp balance message from the ledger
• Excel import for a new set of parties
• Duplicate GSTIN and name checks
• Loyalty points and tags for campaigns

Record what came in and what went out, settle the right bills automatically, and keep cash and bank balances honest.

• Payment in and payment out
• Settle oldest invoices first or pick bills by hand
• Payment discount and reference number
• Cash and bank accounts with statements
• Transfers between cash and bank
• Expenses with GST and input-credit flag
• Attachments on expenses, deleted with the entry
• UPI pay QR and pay links on invoices
• Online payments through your gateway
• Gateway refunds from the app
• Recurring invoices, weekly to yearly

GST returns built from the bills you already raised, with checks that catch missing details before the portal does.

• GSTR-1 in the official GSTN V2.2 Excel template
• GSTR-3B summary for the period
• HSN and rate-wise summaries
• Purchase register and GSTR-2B comparison
• e-Invoice IRN JSON and printed IRN, ack and signed QR
• e-Invoice is off until the owner switches it on
• e-Way Bill JSON per invoice, in one ZIP
• Vehicle, transporter, PIN and HSN checks
• Bulk download blocked until every bill is complete
• Cancel within the portal window
• Compliance calendar on the GST screen

GST returns

Answers to the questions owners actually ask: what did I earn, who owes me, what is moving, and what is sitting on the shelf.

• Dashboard with sales, receivables and GST payable
• Outstanding and ageing (0–30, 31–60, 61–90, 90+)
• Profit & loss and balance sheet
• Day book of every transaction
• Sales and purchase registers
• Stock summary and stock valuation
• Item-wise and category-wise sales
• Cash and bank statements
• Branch-wise totals where relevant
• CSV export from every report

A public shop page with your catalogue, cart and checkout. Orders arrive inside KVN Billing and become invoices with one key.

• Your own link at /store/your-name
• Categories, search and per-product stock
• Delivery or pickup with fees and thresholds
• Minimum order and free delivery above a value
• Online payment or cash on delivery
• Order tracking without a login
• Orders become invoices in one key
• Store settings for banner, hours and contact
• Demo payment mode for testing

Online store

Collect faster without awkward phone calls. Every reminder carries the party's balance and a link to their statement.

• List of everyone who owes you, with ageing
• Ready WhatsApp message with name, balance and link
• Send one by one, or in a paced queue
• Automatic reminders on the days you choose
• SMS through any gateway URL
• Campaigns by tag, dues, last purchase or spend
• Personal tokens like {name}, {balance}, {store}
• Every message logged with its status
• Opt-out respected for a party

Give each person only the keys they need, and keep every branch and year in its own lane.

• Owner, staff and read-only CA logins
• Tick exactly what each staff member can do
• Owner password for important deletes
• Activity log of changes across the business
• Several branches in one business
• Branch switcher scopes bills, cash, stock and reports
• GST returns always cover every branch
• Several businesses under one login
• Fiscal-year switch with derived carry-forward
• Voucher numbering per series and year

Turn raw material into a finished product and keep the stock ledger exact — including what the batch cost.

• One recipe (bill of materials) per finished item
• Availability check before a build
• Batch builds that consume the right godown
• By-products and extra charges
• Edit or cancel a build and restore stock
• Cost per batch and build sheet
• Build register export

The counter is on a laptop, the godown is on a phone, and both read the same books. Access and backups are treated as part of the product.

• Android app for sales, purchases, parties, items, payments and expenses
• Every screen reads and saves to the cloud
• Web app for reports, GST, settings and printing
• Sign in once; a new login ends the old session
• Two-step login with an authenticator app
• Encrypted weekly AES-256 database backups
• Last five backups retained, restorable by the platform admin
• HTTPS, strict security headers, CSRF protection
• Prepared SQL statements and least-privilege checks
• Locked logins after repeated wrong passwords

Android app