GSTMitra - GST Calculator

GSTMitra - GST Calculator and Invoice Maker for India

Looking for a simple GST calculator that works offline, generates invoices, and covers all Indian tax needs in one place? GSTMitra is your complete GST and tax companion — built for Indian shopkeepers, freelancers, and small business owners.

No bank linking. No subscription. Just open the app and start calculating.

WHAT YOU CAN DO WITH GSTMITRA

GST Calculator
Calculate GST for any amount and rate. Switch between inclusive and exclusive GST, split CGST and SGST for intra-state, or calculate IGST for inter-state. Supports 0%, 5%, 12%, 18%, and 28% slabs.

Invoice Generator
Create professional GST invoices in seconds. Add business details once, add line items with HSN codes and GST rates, and generate a PDF invoice ready to share on WhatsApp or email.

HSN and SAC Code Lookup
Search any product or service and instantly find the HSN or SAC code with GST rate. Works fully offline.

Income Tax Calculator
Calculate tax under old and new regimes for FY 2025-26. Budget 2026 updated — zero tax for salaried income up to Rs 12.75 lakh under the new regime. Compare both regimes side by side.

TDS Calculator
Calculate TDS with section-wise rates — 194C for contractors, 194J for professionals, 194I for rent, 194A for interest, and more. Includes threshold checker.

TCS Calculator
Calculate TCS on overseas remittances as per Budget 2026 — overseas tour packages, education, medical, and other LRS transfers.

EMI Calculator
Calculate loan EMI with full amortization schedule. Compare two loans side by side.

GSTR Due Date Reminders
Get notified 3 days before GSTR-1, GSTR-3B, GSTR-9, and advance tax due dates.

WHO IS GSTMITRA FOR

- Shopkeepers calculating GST on every sale
- Freelancers generating invoices for clients
- Small business owners tracking GST
- Students and CA aspirants learning GST
- Salaried employees comparing tax regimes
- Anyone sending money abroad and calculating TCS

WORKS IN 3 LANGUAGES

English, Hindi, and Telugu supported.

SECURE AND PRIVATE

Sign in with Google to sync invoice history, or use as guest without login. Your data is never sold or shared.

KEY FEATURES

- GST inclusive, exclusive and reverse calculator
- CGST, SGST and IGST split calculator
- Multi-item GST calculator
- PDF invoice generator
- HSN and SAC code offline search
- Income tax calculator with old vs new regime comparison
- Zero tax display up to Rs 12.75 lakh (new regime)
- TDS calculator with section-wise rates
- TCS calculator for overseas remittances
- EMI calculator with amortization schedule
- GSTR due date reminders
- Business profile with logo
- Offline calculation history
- Dark mode support

TAX DATA

All calculations verified against Budget 2026 (1 February 2026) and Income Tax Act 2025 effective FY 2026-27. TDS rates are indicative — verify at incometax.gov.in before filing.

MADE FOR INDIA

Built by an Indian developer for Indian users — GST, HSN codes, TDS, TCS, advance tax, and Indian invoicing all in one place.

Download GSTMitra — your free GST calculator and tax companion for India.

DISCLAIMER

GSTMitra is not affiliated with the Government of India or the GST Council. All calculations are for reference only. Consult a qualified CA for official GST filing and tax advice.