GST tools that just work — no sign-up, no uploads.
Calculate GST in seconds, generate clean GST invoices, and check any GSTIN — all free and running entirely in your browser. Your data never leaves your device.
What GST tools are available for free on bydigital.in?
bydigital.in offers 8 free GST tools: a GST calculator, reverse GST calculator, late fee and interest calculator, profit margin calculator, invoice generator, quotation maker, billbook tool, and GSTIN validator. Every tool runs entirely in your browser with no sign-up, no upload, and no usage limits.
GST Calculator
Add or remove GST at any rate. See the exact CGST, SGST or IGST split instantly.
Reverse GST Calculator
Have a GST-inclusive price? Get the base amount and the tax hidden inside it.
Late Fee & Interest
Find the late fee and 18% interest for a delayed GSTR-3B or GSTR-1, with caps.
Profit Margin Calculator
Turn cost price into selling price with GST, cess and margin — plus a visual chart.
Invoice Generator
Build a clean, GST-ready invoice with auto tax totals and save it as a PDF.
Quotation Maker
Create a professional quotation with your logo, GST, bank details and terms — as a PDF.
Billbook Tool
Full billing workflow: themes, party book, auto numbering, received vs balance due — saved on your device.
GSTIN Validator
Check the format and checksum of any 15-digit GSTIN and read its state & PAN.
What are the current GST rates in India?
Under GST 2.0, effective 22 September 2025, India follows a simplified two-slab structure: 5% for essential goods and services and 18% as the standard rate, plus a 40% demerit rate for luxury and sin goods. Many daily essentials remain at 0% (exempt). The table below summarises the slabs.
| GST slab | Applies to | Typical examples |
|---|---|---|
| 0% (exempt) | Basic essentials | Fresh fruits & vegetables, milk, curd, books |
| 5% | Merit / essential goods & services | Packaged food items, medicines, footwear, restaurants |
| 18% | Standard rate — most goods & services | Electronics, cosmetics, most services, appliances |
| 40% | Demerit / luxury & sin goods | Pan masala, tobacco, aerated drinks, luxury cars |
Rates and classifications are set by the GST Council. Always verify the latest notifications on the official GST portal (gst.gov.in) and CBIC (cbic-gst.gov.in) before filing. Read our plain-language guide: GST 2.0 explained.
Why should you use bydigital for GST calculations?
Because everything is private, fast, and built for Indian GST rules. All calculations happen locally on your device — nothing is sent to any server. The tools support CGST/SGST splits for intra-state sales, IGST for inter-state sales, all 36 state and UT codes, and Indian rupee formatting by default.
Your data stays with you
Every calculation runs locally in your browser. Nothing is uploaded to any server.
Fast & free forever
No accounts, no limits, no watermarks. Open a tool and get your answer in seconds.
Indian GST rules
CGST/SGST for intra-state, IGST for inter-state, correct state codes, ₹ formatting.
How do you use these GST tools?
Open any tool from the menu, type your amount, pick a GST rate, and the result appears instantly — most tools calculate as you type. Invoices, quotations and bills can be saved as PDF straight from your browser. Here are the exact steps to get your first result:
- Pick a tool — for a quick tax split use the GST calculator; for a bill, open the invoice generator.
- Enter your numbers — the amount, the GST rate (5%, 18% or 40%), and whether the sale is intra-state (CGST + SGST) or inter-state (IGST).
- Read the break-up — every tool shows the base amount, the exact tax, and the total, formatted in Indian rupees.
- Save or print — invoices, quotations and billbook entries can be downloaded as PDF with one click; nothing is stored online.
What do people usually ask about these tools?
These are the six most common questions we receive about the free GST tools — covering pricing, privacy, invoice validity, GSTIN checks, supported tax rates and mobile use. Each answer is short and practical, and the tools themselves link to deeper guides wherever a topic needs more detail.