GSTIN and business details
Store company and customer details needed for GST-ready invoices, including business name, billing address, GSTIN, and contact details.
GST billing for India
Free GST Billing Software for Indian Small Businesses
Invoiso helps shops, freelancers, consultants, and small businesses create GST-ready PDF invoices offline. Add GSTIN details, HSN codes, tax rates, UPI payment QR codes, customers, products, and payment records without a subscription or cloud account.
HSN and tax fields
Add HSN codes to products and configure tax values for invoice line items. Generate clear PDFs for customer records and accounting review.
UPI QR payment support
Add a UPI QR code to invoices so customers can pay through common UPI apps. Track full and partial payments after billing.
Why use offline GST billing software?
Many small businesses need billing even when internet access is unreliable. Invoiso stores your invoice data locally and lets you create invoices, manage customers, and export PDFs without depending on a cloud dashboard.
Best fit
- Retail shops and service businesses
- Freelancers and consultants
- Small teams that want local data control
- Businesses looking for a free GST invoice software option
Need a browser-based invoice quickly? Use the free online invoice maker. Need the full desktop app? Go to the download page.
What a GST-ready invoice needs
A valid GST invoice carries specific fields, and Invoiso gives each one a place on the invoice form: your business name, address, and GSTIN; the customer's name, billing address, and GSTIN (for B2B sales); an invoice number and date; HSN or SAC codes for every line item; the taxable value per item; the applicable GST rate; and the tax amount split into CGST, SGST, or IGST as required. Fill these once in your company and customer records, and they carry into every invoice you create.
HSN and SAC codes done right
Every product or service record in Invoiso has an HSN (goods) or SAC (services) code field. Set it once when you add the product, and it appears automatically on every invoice line that uses that product — no retyping codes on every bill. This matters for anyone selling multiple SKUs or service categories, where manually tracking HSN codes on paper invoices is a common source of GST errors.
CGST, SGST, and IGST calculation
Set a tax rate on a product or invoice line, and Invoiso works out the tax automatically. For sales within the same state, it splits the rate into CGST and SGST components on the PDF. For interstate sales, it applies the rate as IGST instead. You don't calculate percentages by hand or maintain a separate spreadsheet to check your tax math — the invoice total, tax breakup, and grand total update as you edit line items.
Who needs GST billing software
Any business registered under GST — or approaching the registration threshold — needs invoices that show GSTIN, HSN/SAC codes, and a correct tax breakup. That covers retail shops billing walk-in and wholesale customers, traders and distributors moving goods across states, service providers like consultants and agencies charging SAC-coded services, and freelancers who have crossed the GST turnover limit. Invoiso works for all of these without requiring an accounting background — you fill in the fields, and the PDF is formatted correctly.
GST billing FAQ
Is Invoiso valid for GST invoicing?
Invoiso lets you add all the fields a GST invoice needs — GSTIN, HSN/SAC codes, tax rates, and a CGST/SGST/IGST breakup — and generates a clean PDF you can hand to a customer or your accountant. It is billing software, not a GST filing or return-preparation tool, so confirm your invoice format with your accountant or the GST portal for your specific compliance needs.
Does Invoiso calculate CGST, SGST, and IGST automatically?
Yes. Set a tax rate on a product or invoice line, and Invoiso computes the tax amount and shows it as CGST + SGST (same state) or IGST (interstate) on the PDF, based on how you configure the invoice.
Can I add HSN or SAC codes to every product?
Yes. Each product record has an HSN/SAC code field. Once saved, the code carries into every invoice line for that product, so you don't have to retype it each time.
Do I need a GST number to use Invoiso?
No. The GSTIN and tax fields are optional. Non-GST-registered freelancers and small sellers can leave them blank and use Invoiso as plain invoicing software; GST-registered businesses can fill them in for compliant invoices.