GST

GST Calculators

Calxo’s GST calculators are built for the actual workflow of an Indian small business — raising invoices, reconciling purchase bills, working out HSN-coded rates, and handling intra-state versus inter-state splits without thinking about the formula.

What you can calculate here

  • Add GST to any base price across the 0%, 0.25%, 3%, 5%, 12%, 18% and 28% slabs
  • Reverse / remove GST from a tax-inclusive total to find the base value (the formula most people get wrong)
  • CGST + SGST split for intra-state transactions
  • IGST for inter-state and export-with-tax transactions

Why these are different

Most GST calculators online are generic tax-percentage tools repackaged for the Indian market. Calxo’s tools handle the specifics — the correct reverse formula Base = Total × 100 / (100 + Rate), the equal CGST/SGST split, the proper IGST handling for inter-state, and the actual current Indian slabs from the GST Council.

If you’re filing GSTR-1 or GSTR-3B and need to back-calculate base values from purchase invoices, the GST calculator is the fastest tool for it.

GST GST

GST Calculator: Add or Remove GST from Any Amount (India, 2026)

Free GST calculator with all current Indian slabs (0%, 0.25%, 3%, 5%, 12%, 18%, 28%). Add GST to a base price …

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About Calxo. Who runs this site

Calxo (calxo.in) is a free, ad-light calculator platform built for Indian users. Every tool covers EMI, SIP, GST, income tax, FD, PPF, salary, and conversions, using Indian rules, INR, and current tax slabs (not generic global formulas).

Publisher

Calxo is operated by Vignesh Sampath Kumar, an SEO Lead at PipeRocket Digital in Chennai and the founder of EVBlogs.in. Vignesh personally writes and reviews every calculator page.

Editorial standards

  • Formulas verified against RBI, Income Tax Department, CBDT, and GST Council sources
  • Updated the same week tax slabs or rules change
  • No paid placements; no affiliate links inside calculators
  • All calculations run in your browser; inputs are never stored

Contact

Corrections, suggestions, or partnership: avmedianews321@gmail.com

Based in India. Founded 2026.

Disclaimer: Calxo is a calculation tool, not financial, legal, or tax advice. For decisions that affect your money in any meaningful way, talk to a SEBI-registered financial advisor or a Chartered Accountant. We update formulas the same week laws change, but we're not liable for outcomes from calculator outputs. Read our Terms and Privacy Policy.