GST Invoice Generator Pro - Offline Invoicing Tool for India DIGITALKARTAI.SHOP GST Invoice Generator Pro Offline invoicing for Indian businesses Auto CGST / SGST / IGST · HSN & SAC · Amount in words Client book · Payment tracker · Print or save as PDF Grand total ₹33,630 Print / Save as PDF One-time purchase · No subscription · No sign-up · Works offline
Digitalaikart Original · Software Tool

GST Invoice Generator Pro

Create GST-compliant invoices and quotations offline — right in your browser

A small, fast invoicing tool for Indian freelancers, consultants and small businesses. Set your business details once, add your line items, and the tool works out CGST, SGST or IGST automatically, writes the amount in words in the lakh/crore style, and prints a clean A4 tax invoice you can save as PDF. Keep a client book, track what is paid and outstanding, and back everything up as a JSON file. Nothing is uploaded — your data stays on your own device.

7
GST Slabs
CGST/SGST/IGST
Auto Split
0
Sign-ups
A4
PDF Ready
Get the Tool — ₹149 →

Who This Tool Is For

Anyone in India who sends invoices or quotes — and wants it done in minutes

💻

Freelancers & Consultants

Service invoices with SAC codes and a few retainer clients. Most of your clients are in another state, so IGST is applied automatically.

🧾

Agencies & Studios

Multi-line projects with per-line discounts, a professional A4 tax invoice, and a client book you can reuse for the next quote.

🏪

Small Shops & Traders

Goods bills with HSN codes and the right GST slab per item, printed or saved as PDF the same day.

🎓

Tutors & Service Pros

Clean, GST-ready invoices and quotations for parents, clients and institutions — without learning accounting software.

What You Can Do With It

The everyday billing jobs, handled in one small tool

⚖️ Automatic GST Split

Intra-state supplies split into CGST + SGST; inter-state supplies become IGST — decided from your state versus the place of supply.

🧮 Per-Line HSN/SAC & Discount

Each line takes a description, HSN/SAC code, quantity, rate, a percentage discount and its own GST rate. Tax is charged on the discounted value.

🔤 Amount in Words

The grand total is written out in the Indian lakh/crore style (for example “One Crore Twenty Three Lakh …”), ready for the printed invoice.

📄 Invoices & Quotations

Switch the document type to a quotation with a validity date, then reuse the same details when the work is confirmed.

👥 Client Book

Save clients with their GSTIN, address and state once — then load them into a new document with a single click.

📊 Payment Tracker

A dashboard of total invoiced, paid and outstanding amounts, plus Mark paid / unpaid on each document.

Inside the Pack

A complete, self-contained folder — nothing else to buy

  1. index.html — the tool

    Double-click to open the invoicing app in your browser. No installer, no admin rights.

  2. assets/app.js & assets/styles.css

    The application logic and design, kept beside index.html so the tool runs fully offline.

  3. README.md — the instructions

    A step-by-step guide: getting started, creating an invoice, saving a PDF, backups and compatibility.

  4. sample-client-data.json — an example backup

    Import it to see the tool working with clearly-labelled example data before you enter your own.

  5. LICENSE.txt — your licence

    Your single-purchase licence to use the tool for your own invoicing.

How It Works

From download to your first invoice in about two minutes

1 · Unzip & open

Unzip the folder and double-click index.html. It opens in Chrome, Edge, Firefox or Safari.

2 · Set your details

Fill in your business name, address, home state, GSTIN (if registered), bank/UPI details and invoice number prefix.

3 · Add line items

Enter what you supplied, the HSN/SAC code, quantity, rate, discount and GST rate. The totals update as you type.

4 · Save & print

Save the document, then press Print / Save as PDF to get a clean A4 tax invoice file.

Preview

The app interface and the printed tax invoice it produces

Dark app interface

Tabs for Create, Documents, Clients and Settings. A live summary panel shows the taxable value, the tax split, the round-off and the grand total as you type.

Clean A4 invoice

The printed document is white and print-friendly: your details and logo at the top, the client block, an itemised table with HSN/SAC and GST, the tax summary, amount in words and a signature line.

Inter-state ready

Change the place of supply to another state and the invoice switches from CGST + SGST to a single IGST line, with the tax summary updated.

File Format & Compatibility

Plain, portable files — no lock-in

Format

One ZIP containing plain HTML, CSS and JavaScript, plus the instructions, an example backup and the licence. Unzips on Windows, macOS, Linux, Android and iOS.

Browsers

Current Chrome, Edge, Firefox and Safari, on desktop and mobile. Nothing else is required.

Output

Prints to paper or saves as PDF from your browser’s print dialog. Data can be exported to a JSON backup and imported back at any time.

Get Instant Access

One-time payment · Lifetime access · No subscription

LAUNCH PRICE

GST Invoice Generator Pro

₹149
₹999 · 85% off launch price
  • Offline GST invoicing tool (HTML/JS)
  • Tax invoices & quotations
  • Automatic CGST / SGST / IGST split
  • HSN/SAC lines with per-line discount
  • Amount in words (lakh/crore style)
  • Client book & payment tracker
  • Print or save as PDF (A4)
  • JSON backup & restore
  • Instructions, example data & licence
  • Instant download after payment
Get the Tool for ₹149 →

Buy With Confidence

Your purchase is protected

⚡

Instant Delivery

Your download is ready the second your payment succeeds — a single ZIP with the tool, instructions and licence.

🔒

Private by Design

Nothing is uploaded. Your business details, clients and invoices are saved in your own browser, on your own device.

💳

Secure Razorpay Checkout

UPI, cards, net banking & wallets — processed on PCI-DSS compliant infrastructure.

Frequently Asked Questions

Everything you need to know before buying

Is this software or a book?

It is a small software tool, not an ebook. You get a folder with an index.html file; you double-click it and it opens in your browser as a working GST invoice and quotation maker. There is nothing to install and no account to create.

Does it work offline?

Yes. Once you have downloaded the folder, creating invoices, quotations, clients and PDFs all work with the internet switched off. Your data is saved in your own browser, not on any server.

How does it decide CGST, SGST or IGST?

You set your home state once in Settings and pick the place of supply on each document. If the place of supply is your own state the tool splits the tax into CGST and SGST; if it is a different state it charges IGST. The summary panel shows which one is being applied.

Can I save the invoice as a PDF?

Yes. Press Print / Save as PDF and in your browser’s print window choose Save as PDF. The print layout is a clean white A4 tax invoice — the coloured app interface is not printed.

Do I need to be GST-registered to use it?

No. If you are not registered you can leave your GSTIN blank and the tool still produces clean invoices and quotations. If you are registered, add your GSTIN and it prints on the document.

Does it file my GST returns?

No. This tool prepares invoices and quotations and helps you keep a client book and payment tracker. It does not file returns, generate e-invoices or connect to the GST portal. GST rates and rules can change, so verify the current position on the GST portal or with your CA before filing.

Is it a subscription?

No. It is a one-time purchase. There is no monthly or yearly fee, no per-invoice charge and no user limit inside the tool.

How do I get my files after payment?

After a successful payment on Razorpay you are taken to a thank-you page with a download button. Click it to get your ZIP instantly — it is yours forever.

Can I get a refund?

Digital products are non-refundable because they are instantly downloadable. But if you receive a defective or corrupted file, or were charged incorrectly, we will replace or resolve it — just email lonefaisal977@gmail.com within 7 days.

Pairs Well With

If you bill clients, these Digitalaikart guides go hand in hand

The GST 2.0 Survival Playbook

The indirect-tax rules behind your invoices — slabs, returns and the small-business changes.

The Freelancer Tax & Money Playbook

Presumptive taxation, advance tax and GST for freelancers — the tax side of your billing.

The LinkedIn Client Kit

Copy-paste scripts to win the clients you will then invoice with this tool.

Browse all Digitalaikart products →

Ready to Invoice in Minutes?

One-time ₹149 · Offline tool · Instructions, example data & licence included.

Get the Tool →

Get new tools & guides first

One short email whenever we publish something useful — new India-specific playbooks, tools and guides. No spam, unsubscribe anytime.