CalculatorGen LogoCalculatorGen LogoCalculatorGen
HomeAboutBlog
FinanceLoansSalary & CareerIndia TaxBusiness & CommerceMath & PercentageStatisticsGeometryDate & TimeEducation
CalculatorGen LogoCalculatorGen

Providing accurate, fast, mobile-friendly calculators for personal finance, salary increments, math, dates, and education.

Popular Calculators

  • Age Calculator
  • Salary Hike Calculator
  • EMI Calculator
  • SIP Calculator
  • GST Calculator
  • BMI Calculator

Browse by Category

  • Finance
  • Salary & Career
  • Math & Percentage
  • Date & Time
  • Business & Commerce
  • Education
  • Health & Fitness

Information

  • Blog
  • About Us
  • Contact
  • Privacy Policy
  • Terms of Service
  • Disclaimer
  • HTML Sitemap

© 2026 CalculatorGen. All rights reserved.

"Smart tools for smart decisions."

  1. Home
  2. Business & Commerce
  3. GST Calculator

GST Calculator

Instantly calculate Goods and Services Tax (GST) allocations for billing, business, or pricing estimations.

Loading calculation controls...

How to Use the GST Calculator

  • 1Select Add GST or Remove GST.
  • 2Enter the amount.
  • 3Select a standard rate slab or enter a custom percentage.

Calculation Formula & Mathematical Definition

Add GST: GstAmount = Cost * (Rate / 100). Remove GST: NetCost = Total / (1 + Rate/100), GstAmount = Total - NetCost.

Step-by-Step Worked Example

Adding 18% GST to ₹10,000 gives total cost of ₹11,800 (₹900 CGST + ₹900 SGST).

Frequently Asked Questions

What are CGST and SGST?

In India, Central GST (CGST) and State GST (SGST) are equal splits of the total GST rate collected on intra-state supplies.

Was this calculator helpful?

Your feedback helps us improve.

Related Calculators

  • BreakEven Calculator
  • Conversion Rate Calculator
  • Cost Price Calculator

Estimate Only

Calculations on this website are automatic estimates and do not represent guaranteed financial, tax, or legal returns. Please verify details with certified specialists.

GST Calculator (India)

Calculate Goods and Services Tax (GST) additions or exclusions, with split CGST and SGST reporting.

Calculation Type
$
GST Rate

Total Amount (Tax-Inclusive)

$11,800

Tax calculation at 18% GST rate.

Base Amount (Net)
$10,000
Central GST (CGST 50%)
$900
State GST (SGST 50%)
$900
Total GST Tax Amount
$1,800
Gross Amount (Total)
$11,800