Instant statutory tax calculators, retail standard operating guides, and high-speed local-first POS billing. Built for tired shopkeepers who value speed, privacy, and zero server outages.
Zero install, zero tracking. Accurate to the paisa with automated math formulas built specifically for Indian retailers, restaurants, and traders.
Instant tax additions and reverse GST extraction across 0%, 5%, 12%, 18%, and 28% slabs. Includes automatic CGST, SGST, and IGST breakdowns for GSTR-1 and GSTR-3B filing.
Generate clean 2-inch (58mm) cash slips or full A4 GST invoices right from your browser. Add store logos, itemized tax, custom footer notes, and instant dynamic UPI QR codes.
Never confuse markup with gross margin again. Calculate exact selling prices, target gross profit margins, and volume breakeven points to protect your store's bottom line.
Reconcile cash registers in seconds. Denomination counters for ₹500, ₹200, ₹100, ₹50, ₹20, ₹10 notes and coins with automatic shortage/excess variance detection.
Real-world SOPs written for real-world counters. Master customer credit, kitchen order routing, drug expiry registers, and group expense settlements.
Step-by-step framework to log customer credit, send polite WhatsApp balance reminders, and safely audit dues without awkward friction.
Learn how to separate food from beverage tickets, print 58mm order slips instantly, and manage rush hour table orders smoothly.
Ensure Schedule H compliance, reduce medicine write-offs, and maintain a seamless FIFO return workflow to pharmaceutical distributors.
Master daily procurement rate volatility, dressing loss percentage, and accurate retail profit margin calculations for poultry shops.
Avoid pairing dropped connections. Complete hardware guide for standard 2-inch and 3-inch wireless thermal billing machines.
Collaborative ledger principles for shared rent, electricity, grocery bills, and zero-remainder balance settlements among roommates.
Dedicated, tailored workflows designed for fast finger operations on budget devices.
Track customer credit (Udhar), monitor stock levels, print instant 58mm thermal receipts, and reconcile cash flow without internet access.
Track personal cash expenses, set realistic monthly budgets, log recurring subscriptions, and lock sensitive assets inside a private local vault.
Collaborate on shared flat balances, split utility bills transparently, coordinate chore checklists, and settle up via instant UPI deep-links.
Why KhataOS stays lightning fast even when your network is completely down.
All data writes directly to an embedded SQLite database on your device. Zero loading spinners, zero cloud timeouts, and 60 FPS performance on budget hardware.
Automatic encryption before uploading. Safely mirror snapshots to your private Google Drive with zero plaintext transmission over public networks.
Restore your entire database on any new phone or desktop with your private 6-digit backup passcode. Zero mandatory email or phone number lock-in.
Automated background validation routines check transaction math, inventory deductions, and balance ledgers continuously to prevent calculation errors.
Download the free, lightweight offline application and experience absolute accounting safety with zero monthly subscription fees.