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Download & Install
Install Invoiso on Windows, Linux or macOS. No account or registration required.
Open Source · Free Forever · Windows & Linux & macOS
Free Billing Software
for Small Business
Simple. Fast. Offline.
Invoiso lets you create GST-ready PDF invoices, manage clients and products, track payments, and run your billing entirely offline on Windows, Linux, and macOS. It is free forever, open source, and requires no subscription, cloud account, or registration.
Works offline
No registration
GST ready
UPI QR support
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Free
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Platforms
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PDF Templates
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Downloads
Billing workflow
Free Billing Software Features
Everything you need to manage invoices professionally — 100% free, open source, and offline
Client & Product Tracking
Store clients and products with built-in search, sort, and filter — GSTIN and HSN code support included.
Payment Tracking
Record partial or full payments, track outstanding balances, and download PDF receipts per payment.
Flexible Line Items
Override unit prices per invoice or add one-off custom items without creating a product entry first.
Custom Quantity Label
Rename the quantity column per invoice — hours, units, kg, pcs, or any label that fits your business.
UPI QR Support
Add your UPI QR code to every invoice PDF so clients can pay instantly without manual bank transfers.
PDFs & Templates
Generate polished PDF invoices. Choose from Classic, Modern, Minimal, Executive, or Compact A6 templates.
Invoice Management
Create, edit, and manage invoices with status tracking, history, and duplicate actions.
Offline & Secure
Your data never leaves your device. No cloud, no internet required.
Role-Based Access
Admin and standard user roles protect deletes, settings, and restore actions.
Easy Backup
Portable database backups — restore your entire billing data anytime.
CSV Export
Duplicate Invoices
Create invoices faster
How to Create Free Invoices with Invoiso
Get started in minutes — no account, no setup, no internet required
No account
No internet
PDF ready
02
Set Up Your Company
Enter your business name, logo, GSTIN, and UPI ID in settings. Takes under a minute.
03
Create an Invoice
Select a customer, add products, configure tax, and choose a PDF template.
04
Export & Share
Export a professional PDF with one click and send it to your client instantly.
Why businesses choose it
Why Invoiso Is the Best Free Billing Software for Offline Invoicing
Invoiso is free billing software and free open source billing software for cross-platform desktop invoicing app built for freelancers and small businesses. Manage customers, products, payments, and invoices seamlessly — entirely offline. Your data never leaves your device, ensuring complete privacy and control.
Cross-Platform
Open Source
No Subscription
Lightweight
Built for local business
Free Billing Software for GST, Offline Invoicing and Small Business
Built for Indian small businesses, freelancers, and shops that need a simple desktop billing app without monthly fees, forced signup, or cloud storage
Free GST Billing Software for India
Create GST-compliant invoices with GSTIN and customer GSTIN fields, HSN codes, CGST/SGST/IGST tax rates, UPI QR code payments, and one-click PDF export.
Desktop Billing Software for PC
Install Invoiso on Windows, Linux, or macOS. Keeps billing fast even when internet is unreliable — ideal for shops across India without stable connectivity.
For Kirana Shops, Traders & Services
Used by kirana shop owners, retailers, wholesalers, service businesses, consultants, and freelancers across India for fast, professional invoice creation.
If you are searching for free billing software for India, free GST billing software, offline billing software, or a free Vyapar alternative — Invoiso gives you a fully private, local-first alternative with no subscription and no data leaving your device. Your invoices, customers, products, payments, and backups stay on your own computer.
Free Billing Software for Shops, Freelancers & Small Business in India
Used by kirana shops, retailers, traders, consultants, and service businesses across India
Freelancers & Consultants
Send GST-ready professional invoices to clients without paying a monthly fee. All client data stays private on your own machine — no cloud, no subscription.
Kirana Shops & Retailers
Free billing software for kirana, hardware, textile, and general stores. Works offline on your shop PC — no internet required, no monthly charges.
Traders & Wholesalers
Manage large customer and product lists with CSV import/export. Create quotations and invoices, track outstanding payments, and export data for your accountant.
Service Businesses & Repair Shops
Bill clients for services with custom line items, hourly rates, or fixed charges. Add a UPI QR code so customers can pay via GPay, PhonePe, or Paytm instantly.
Transparent by design
Free Open Source Billing Software You Can Trust
Auditable source code, local data storage, and no vendor lock-in for your business billing workflow
Source Code on GitHub
Inspect the code, report issues, request features, or contribute improvements directly in the public repository.
No Vendor Lock-In
Use Invoiso without a paid plan, online workspace, forced login, or hosted account controlled by a third party.
Local-First Billing
Invoices, customers, products, payments, and backups stay on your computer, so billing keeps working offline.
For teams that need more
Invoiso Cloud Is Now Available
Need multi-device access, team login, and centralised billing data? Invoiso Cloud is a hosted version built for businesses that cannot run offline-only. Available for select clients on request — not a self-serve subscription.
Request Cloud AccessTeam Login
Each team member gets their own login. Role-based access keeps billing data organised across your business.
Multi-Device Sync
Invoices, customers, and products stay in sync across every device your team works on — desktop, laptop, or office PC.
Available on Request
Not a public subscription. Tell us your setup and we will configure a cloud deployment that fits your workflow.
Private by default
100% Offline Invoice App — No Internet, Ever
Unlike cloud-based tools, Invoiso is a desktop invoice app that installs directly on your Windows, Linux or macOS machine. All your customer data, invoices, and product catalogue live in a local database on your device — no servers, no syncing, no connectivity required.
Perfect for shops with unreliable internet, field workers, or anyone who values complete data privacy. Your business data is yours — not stored in someone else's cloud.
No internet needed
Data never leaves your PC
Instant — no page loads
Local backup anytime
Product tour
Invoiso in Action — Free Invoice Software Screenshots
Explore the intuitive interface designed for seamless invoice management
24 screens
Desktop app
Click to preview
Watch the workflow
Invoiso Demo — Free Offline Invoice Software Walkthrough
Full walkthrough of Invoiso — from setup to your first invoice
Company setup
Customers and products
Invoice creation
PDF export
Video loads only when you press play.
Invoiso vs Vyapar vs Zoho Invoice vs Wave — Free Billing Software Comparison
How Invoiso compares to Vyapar, Zoho Invoice, Wave, and other billing tools popular with Indian small businesses
| Feature | Invoiso ★ Best | Vyapar | Zoho Invoice | Wave |
|---|---|---|---|---|
| Price | Free forever | Freemium (paid from ₹1,499/yr) | Free (India only, limits apply) | Free (paid add-ons) |
| Works offline | ✓ | ✓ | ✗ | ✗ |
| No account or signup required | ✓ | ✗ | ✗ | ✗ |
| Data stays on your device | ✓ | Partial (cloud sync) | ✗ | ✗ |
| Linux & macOS desktop support | ✓ | ✗ | ✗ | ✗ |
| GST-ready invoicing (India) | ✓ | ✓ | ✓ | ✗ |
| UPI QR code on invoice | ✓ | ✓ | ✗ | ✗ |
| Open source | ✓ | ✗ | ✗ | ✗ |
| Payment tracking & receipts | ✓ | ✓ | ✓ | ✓ |
| PDF invoice templates | 3 (Classic, Modern, Minimal) | 1 on free plan | Multiple | Limited |
Comparison based on publicly available information as of May 2026. Features may vary by plan or region.
Billing Software Guides
Focused pages and practical guides for common invoice software searches.
Free GST Billing Software
GST-ready invoice PDFs with GSTIN, HSN, tax fields, and UPI QR support.
Offline Billing Software
Desktop invoicing for businesses that want local data and no cloud dependency.
Free Vyapar Alternative
Compare Invoiso with paid billing tools when you need a free open-source option.
Open Source Invoice Software
Transparent billing software with source code available on GitHub.
Invoice Software for Linux
Linux desktop billing with AppImage and DEB options.
Invoiso Blog
How-to guides for GST invoices, UPI QR payments, offline billing, and Linux invoicing.
Frequently Asked Questions
Quick answers to the most common questions
Is Invoiso completely free?
Yes — Invoiso is 100% free and open source. No subscriptions, no hidden fees, no premium tiers. Download it and use it indefinitely.
Is Invoiso free open source billing software?
Yes. Invoiso is free open source billing software for Windows, Linux, and macOS. You can use it for invoices, quotations, payments, customers, products, GST fields, PDF exports, and offline backups without paying a subscription.
Does Invoiso work without an internet connection?
Absolutely. All your data — customers, products, and invoices — is stored locally on your device. No internet connection is ever required.
Does Invoiso support GST invoicing and UPI QR codes?
Yes to both. Invoiso supports GSTIN fields, HSN codes, and per-item tax rates for GST-ready invoices. You can also add a UPI payment QR code to every PDF — customers can scan and pay via GPay, PhonePe, or Paytm instantly.
Is my data safe? Can I back it up?
Your data never leaves your device — no cloud, no remote servers. Use Settings → Backup to export a database file you can restore at any time.
Can I track payments against an invoice?
Yes. Invoiso has built-in payment tracking. Record partial or full payments against any invoice, and the app automatically calculates the outstanding balance and updates the payment status (Unpaid, Partial, or Paid). You can also download a professional PDF receipt for each payment.
Is Invoiso a free alternative to Vyapar?
Yes. Invoiso is a free, open-source alternative to Vyapar for Windows, Linux, and macOS. Unlike Vyapar, Invoiso requires no account or phone number signup, is completely free with no paid tier or subscription, and is open source under the MIT licence. Both apps support offline billing and GST-ready invoices with UPI QR codes. Invoiso also supports Linux and macOS, which Vyapar does not.
Can I use Invoiso as free GST billing software for my business in India?
Yes. Invoiso works as free GST billing software for Indian businesses. It supports GSTIN fields for your company and customers, HSN codes per product, CGST/SGST/IGST tax rates, UPI QR code payments on PDF invoices, and generates GST-compliant invoices entirely offline. No subscription required.
What People Say
Real feedback from real users
Get in Touch
Questions or feedback? We'd love to hear from you.
Email
anooppkrishnan96@gmail.com
GitHub Issues
Report bugs or request features
Customisation Request
Templates, custom fields, white-label builds
Typically responds within 24–48 hours