Got Questions?
Frequently Asked Questions (FAQ)
Clear, detailed answers regarding GST calculations, data privacy, payments, and compliance features.
How does the tool determine CGST/SGST vs IGST?
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The tool automatically checks your State (Seller) against the Client's State (Buyer). When both states match (intra-state transaction), GST is split equally into CGST (Central GST) and SGST (State GST) — for example, 9% + 9% on an 18% slab. When the states differ (inter-state transaction), IGST (Integrated GST) is applied in full (18%). You can also manually override this tax split with a single click.
Is this tool completely free and private?
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Yes, 100%! GST Invoice Pro is completely free with no hidden charges, watermarks, or monthly subscriptions. Furthermore, it operates 100% client-side in your web browser. Your company financials, items, prices, and customer contact numbers are never sent to or stored on any remote cloud server.
How does the UPI QR Code work?
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When you enter your UPI VPA (e.g. yourname@upi) in the Bank Details section, our engine dynamically encodes the exact invoice total, payee name, and invoice reference number into a standard NPCI-compliant UPI QR code. Your client can simply scan the QR code using Google Pay, PhonePe, Paytm, CRED, or BHIM to pay the exact amount with zero manual typing or bank fees.
What are HSN and SAC codes?
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HSN (Harmonized System of Nomenclature) is a standardized classification code for physical goods, while SAC (Services Accounting Code) classifies services. Under Indian GST law, specifying accurate 4, 6, or 8-digit HSN/SAC codes is mandatory based on your annual turnover (AATO) and is required when filing your monthly GSTR-1 returns.
Can I create simple bills or Cash Memos if I don't have a GST number?
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Yes! Simply toggle the 'Non-GST / Simple Cash Memo' switch on the top toolbar. The tool will immediately hide all GSTIN fields, tax columns, and tax breakdowns, re-titling the document to a compliant 'Cash Memo' or 'Bill of Supply' suitable for local kirana stores, repair shops, and small businesses below the GST threshold.
How do I convert a Quotation or Proforma into a final Tax Invoice?
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Use the Document Type dropdown in the top action bar to toggle between 'Tax Invoice', 'Quotation / Estimate', and 'Proforma Invoice'. All your line items, client details, notes, and pricing remain intact, allowing you to instantly issue an estimate and later convert it into a final bill in a single second.
How do Digital Stamps and Signatures work on this invoice?
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In the 'Signatures & Stamps' section, you can upload your official company rubber seal (round or rectangular stamp) with automatic white background removal. You can also sign directly on our interactive digital touch/mouse canvas or select from our curated calligraphic signature styles for a polished corporate finish.
How does Dual Address (Billed To vs Shipped To) help with shipping?
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Under Indian GST and E-Way bill regulations, goods are frequently dispatched to a warehouse, branch, or factory while the billing is done to corporate headquarters. Enabling the 'Dual Address' toggle provides dedicated fields for the shipping consignee name, destination address, Transport Mode, Vehicle Number, LR/RR Number, and E-Way Bill Number.
Where is my data saved? Can I close my browser and continue later?
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Every character you type is automatically saved in your browser's private LocalStorage in real-time. If you refresh the page or return tomorrow on the same browser, your draft invoice is immediately restored. You can also click 'Reset to Blank' anytime to start a fresh invoice.