GST Calculator
Calculate GST on a base amount or split GST from an inclusive price
How to Use This Calculator
Enter amount and rate
Provide the monetary amount and applicable GST rate.
Choose mode
Untick for exclusive (add GST) or tick for inclusive (split GST out).
Calculate
See base, GST, and total numbers instantly.
Formula
Exclusive: tax = base×r; total = base+tax. Inclusive: base = total/(1+r); tax = total−base
About GST Calculator
The GST Calculator helps businesses and consumers compute Goods and Services Tax either by adding GST to a base price or splitting GST from a tax-inclusive total. Many jurisdictions apply GST/VAT-style consumption taxes at the point of sale, sometimes with multiple rate tiers or exemptions. This tool keeps computation transparent and fast, allowing you to switch between inclusive and exclusive modes and adjust rates as needed. Because actual GST regimes vary by country and may involve input credits, thresholds, and filing requirements, treat the output as an arithmetic aid rather than compliance guidance.
Frequently Asked Questions
Is GST the same as VAT?
They are both consumption taxes; naming and rules vary by jurisdiction.
Does this handle multiple rates?
This calculator uses a single rate input. For multi-rate items, compute components separately.
Is this a filing tool?
No. It's a quick arithmetic helper; consult official guidance for compliance.