Free Tax & GST Tools
21 free calculators and finders for GST, income tax, NRI taxation and international VAT. Built by GstMan's tax experts.
GST Calculator
Add GST to a price or extract GST from a GST-inclusive amount with CGST / SGST / IGST split.
Learn more →HSN / SAC Code Finder
Search HSN codes for goods and SAC codes for services by product or service name.
Learn more →GST Invoice Generator
Create a GST tax invoice with CGST/SGST/IGST, amount in words and print or save it as PDF.
Learn more →GST Late Fee & Interest Calculator
Estimate late fee and 18% interest for delayed GSTR-1 and GSTR-3B filing.
Learn more →Income Tax Calculator (Old vs New Regime)
Compare old and new tax regime for salaried individuals and see which saves more tax.
Learn more →HRA Exemption Calculator
Calculate HRA exemption using the least-of-three rule for metro and non-metro cities.
Learn more →NRI Residential Status Calculator
Find out if you are NRI, RNOR or Resident for Indian tax purposes based on your days in India.
Learn more →NRI Property Sale TDS Calculator
Estimate capital gains tax and TDS when an NRI sells property in India and plan lower TDS.
Learn more →GST Registration Eligibility Checker
Check if you must register for GST based on turnover, state, inter-state supply and e-commerce.
Learn more →ITR Form Finder
Answer a few questions to find ITR-1, ITR-2, ITR-3 or ITR-4 for your income and status.
Learn more →VAT / GST Calculator (UK, UAE, EU, Singapore...)
Add or remove VAT/GST for 17 jurisdictions. Useful for exporters, global freelancers and overseas businesses.
Learn more →Advance Tax Calculator & Due Dates
Split your estimated tax into the four advance tax instalments with exact due dates, including the presumptive-taxation option.
Learn more →Capital Gains Tax Calculator
Estimate short-term and long-term capital gains tax on shares, equity funds, debt funds, property and other assets.
Learn more →Gratuity Calculator
Calculate gratuity from last drawn salary and years of service with the 15/26 formula and the ₹20 lakh cap.
Learn more →In-Hand Salary Calculator (CTC to Take-Home)
Convert annual CTC into monthly in-hand salary after PF, professional tax and income tax.
Learn more →Which Business Structure Is Best? Selector
Answer a few questions and get a recommended business structure for your plan, funding and risk.
Learn more →GSTIN & PAN Validator and Decoder
Validate a GSTIN or PAN format, verify the checksum and decode the state code and holder type.
Learn more →Gold Jewellery GST Calculator
Compute the GST on gold jewellery from weight, rate and making charges. Built for jewellers in Thrissur, Kozhikode, Kochi and across South India.
Learn more →UK & UAE Corporate Tax Calculator
Estimate UK corporation tax (19% to 25% with marginal relief) and UAE corporate tax (0% to AED 375,000, 9% above).
Learn more →E-Way Bill Validity Calculator
Find the validity period and expiry of an e-way bill from distance and cargo type.
Learn more →GST Composition Scheme Calculator
Compare tax under the composition scheme and the regular scheme using your turnover, purchases and GST rate.
Learn more →Can't find the tool you need?
Tell us what calculator or checker would help your business. We build free tools and custom software.