GST Calculators
Calculate GST interest, GST late fee and GST reverse charge and other GST calculations.
All GST Calculators
GST Guides
GST Inclusive vs Exclusive: How to Calculate Either Way
Adding GST to a base price (exclusive) and extracting GST from a final price (inclusive) use different arithmetic — exclusive multiplies the base price by the rate, while inclusive divides the final price by (1 + rate) first — mixing up the two directions is the most common GST calculation mistake.
Read guideGST Late Filing: Interest and Late Fee Explained
Filing GST late triggers two separate charges — 18% per annum interest on the unpaid tax amount (Section 50), and a flat per-day late fee on the return itself (Section 47, ₹50/day for a normal return or ₹20/day for a nil return, each capped) — and they're calculated completely independently, so both apply together, not just the larger of the two.
Read guideReverse Charge Mechanism (RCM) Under GST Explained
Under the Reverse Charge Mechanism, the recipient of goods or services pays GST directly to the government instead of the supplier collecting it — this applies to specific notified categories (like certain imports, purchases from unregistered dealers in specified cases, and services such as legal services from an advocate), not to transactions generally.
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