Khata Billing: Free GST Invoicing and UPI Costs for Indian MSMEs

Khata Billing is the free GST billing software that enables Indian small business owners to create GST-compliant invoices, which is a legal requirement under GST law and protects them from tax penalties.

Under GST, every registered business must issue a tax invoice that contains the seller's name, GSTIN, buyer's details, invoice number, date, item description, quantity, rate, tax amount, and total payable. Failure to provide a proper invoice can result in a penalty of up to 10% of the tax due, and repeated non-compliance may attract higher fines and interest.

For example, if a shopkeeper in Delhi issues a bill without GSTIN or correct tax breakdown, the tax officer can assess a 10% penalty on the unpaid tax amount, directly impacting the business's cash flow.

Khata Billing — free GST billing software supports this requirement by automatically generating e-invoices that meet all GST fields, including GSTIN verification, HSN code assignment, and tax calculation, while also offering barcode printing and UPI payment integration.

The software enforces the free plan's 10-invoice daily and 100-invoice monthly limits, ensuring businesses stay within legal issuance caps while using the tool at no cost.

Businesses can link their GSTIN in Khata Billing to validate invoices, and the platform's auto-numbering prevents duplicate or skipped invoice numbers, which are common causes of audit notices.

By using Khata Billing's compliant invoicing, MSMEs avoid the risk of tax department scrutiny, reduce the chance of input tax credit rejection, and maintain a professional record for audits, all without paying a rupee.

Understanding the free plan's 10 invoices per day and 100 in 30-day limit is essential for shopkeepers using Khata Billing. When you exceed 10 invoices on any given day, the system automatically blocks new invoice creation until the next calendar day begins, while a 30-day cap means creating more than 100 invoices total in a month also triggers a temporary pause until the count resets. For example, a kirana store selling 5 kg apples (₹80/kg, 5% GST) and 10 kg bananas (₹60/kg, 5% GST) would generate one invoice totaling ₹1,095 (₹500 + ₹590 + ₹50 GST + ₹59 GST). If this store issues 11 such invoices in a single day, the 11th transaction fails, requiring the owner to wait 24 hours before continuing, which can disrupt peak-hour sales flow. This daily and monthly cap ensures fair usage while still supporting small operations with the Free GST invoice generator functionality. The limit applies to every user regardless of business size, making it a practical safeguard for daily cash counters. Owners should plan bulk entries during low-traffic periods to avoid workflow interruptions, and remember that upgrading to Premium unlocks unlimited invoicing without daily or monthly restrictions, enabling seamless scaling for growing businesses.

Khata Billing walks you through creating your first GST-compliant invoice in six practical steps that mirror daily shop operations. First, open the Khata Billing web or mobile app and log in using your registered mobile number and password, which grants access to your dashboard where GSTIN details are securely stored. Next, click the New Invoice button on the dashboard to begin item entry; this opens a clean form where you select the customer’s GSTIN, enter the invoice date, and choose the appropriate tax regime like normal or reverse charge.

1. Enter the customer details by selecting from saved contacts or searching by GSTIN, ensuring the name matches the official record to avoid GST mismatches.
2. Add items by searching the product catalog, typing the HSN code, or scanning the item barcode; for each line, input the quantity, rate in INR, and applicable GST percentage to auto-calculate CGST, SGST or IGST.
3. Review the auto-generated invoice total which includes correct tax breakdowns, confirming the grand total aligns with your sales ledger before proceeding.
4. Click the Generate Barcode option to create a scannable QR code that links to the digital invoice for customer verification and faster checkout.
5. Download or print the invoice using the Khata Billing blog guide for thermal printer setup, which ensures the barcode prints clearly on A4 sheets as required by GST law.
6. Finally, send the invoice via WhatsApp or email directly from the app, and record the transaction in your stock ledger to update inventory levels in real time.

This sequence ensures every invoice meets GST compliance while leveraging Khata Billing’s barcode and stock features for seamless shop floor execution.

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Small shop owners in India traditionally write invoices by hand in a ledger book, noting GST details, item descriptions, and totals. Each entry requires careful calculation of CGST, SGST or IGST, and the invoice number must be written manually, often leading to errors or missing pages. When a customer pays via UPI, the shopkeeper must still record the transaction separately, increasing the chance of double counting or lost receipts. In contrast, Khata Billing automates the entire process, generating a numbered invoice instantly with a barcode scan that captures item details and tax rates. The digital system links directly to GST, so the invoice is ready for filing without manual entry, and UPI payments update the ledger in real time. This eliminates the need for separate UPI cost tracking and ensures accurate stock valuation as inventory is updated automatically. The POS billing system also integrates with the digital register, allowing multiple billing screens for busy counters. While a manual register may seem simple, the time spent on writing, correcting, and filing paper invoices adds up quickly. Digital billing through Khata Billing saves hours each week, reduces errors, and supports seamless GST compliance, making it a practical upgrade for any Indian MSME.

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Let's see how the free plan's 10-invoice daily limit impacts a real shopkeeper's day using actual numbers. Mr. Sharma runs a kirana store in Jaipur with GST registration (GSTIN: 08AAKPS1234F1Z5). He needs to issue GST invoices for each customer transaction.

On Monday, he sells 12 different items totaling ₹2,550. The GST rate is 18%, so he calculates CGST of ₹229.50 and SGST of ₹229.50, making the total invoice amount ₹3,009.00. He creates the first invoice using Khata Billing's free plan, which allows 10 invoices per day. This first invoice is accepted.

He continues selling to 2 more customers: one buys ₹800 worth of goods (GST 5%, total ₹840) and another spends ₹700 (GST 12%, total ₹784). That's 3 invoices total for the day, well within his 10-invoice limit. The system automatically assigns sequential invoice numbers starting from 001.

On Tuesday, he serves 9 more customers with transactions ranging from ₹150 to ₹600. He reaches exactly 10 invoices by 5 PM, hitting his daily cap. Any customer after 5 PM would require a new day to issue invoices, as the free plan resets at midnight. This means he cannot serve walk-in customers after closing time without delaying their bills.

He also needs to track stock. When he adjusts inventory for 5 items after the 10th invoice, Khata Billing updates the stock levels automatically, but he must wait until the next day to issue the 11th invoice, even if the customer is ready to pay via UPI. This delay can affect his cash flow and customer satisfaction, especially during peak hours.

To avoid hitting the 10-invoice limit, Mr. Sharma batches his billing: he groups small transactions or postpones non-urgent invoices until the next day, ensuring he stays compliant with the 100-invoice monthly ceiling as well. The free plan's constraints force practical workflow adjustments that impact daily operations.

To enable UPI collection in Khata Billing, first link your bank account from the settings menu, then generate a UPI ID or use an existing one from your bank's app. The app will display a QR code that customers can scan with any UPI-enabled payment app like Google Pay or PhonePe. This integration works without charging Khata Billing any fee; only your bank's standard UPI transaction fee applies, which is typically a small percentage of the transaction amount and varies by bank. For example, if a customer pays ₹500 for goods via UPI, the bank may deduct ₹5 as its processing fee, leaving the full ₹500 in your account after settlement. Since Khata Billing only provides the collection interface and does not process payments itself, there are no additional charges beyond what your bank levies. This means you can start collecting payments immediately without worrying about hidden costs or monthly subscriptions. The process is fully integrated with GST invoicing, so each UPI payment automatically creates a compliant invoice with the correct GST details. Ensure your business GSTIN is entered correctly in the profile settings so that the generated invoice reflects accurate tax information. By using Khata Billing's built-in UPI functionality, you avoid the need for separate UPI payment gateways and reduce administrative overhead while maintaining full compliance with GST law.

To stay GST-ready, follow this practical checklist: First, respect Khata Billing's free plan limits—10 invoices per day and 100 per 30-day period. If you exceed these, the Premium plan removes all caps with unlimited invoicing. Second, set up UPI by linking your business bank account to Khata Billing; ensure your GSTIN matches the bank account details for seamless payment reconciliation. Third, track stock continuously—use Khata Billing's inventory module to adjust stock levels after each sale, which automatically updates GST liability calculations. Fourth, generate essential GST reports: sales summaries and expense logs are available free, but GSTR-1 and Profit & Loss statements require Premium access. Fifth, verify invoice numbering follows GST rules—Khata Billing auto-generates sequential numbers with GSTIN and date. Sixth, print barcodes for physical records; standard A4 sheets work with thermal printers. Finally, review party ledgers weekly to catch discrepancies before filing. These steps, when followed daily, eliminate manual errors and keep your business audit-proof.