I want to…
Work out tax or GST
Add or remove GST and check the split before billing.
See all Business toolsCalculator category
Business calculators
Check GST, margins, percentages, and monthly cash pressure for everyday business decisions.
Start from your situation
What are you trying to do?
Pick the situation that matches you and jump straight to the tools that help.
Which calculator should you use first?
Start with the first tool that matches the information you already have. Use the result as context for the next step rather than treating one estimate as the whole decision.
A practical order
3 useful starting points
Calculators for business decisions
Some tools also appear in another primary category because salary, bills, measurements, dates, and budgets often affect the same decision.
GST Calculator
Add GST to a taxable price or extract GST from an inclusive bill, with CGST/SGST or IGST split, quantity, discount, invoice rounding, and optional margin checks.
Useful for: Understand the pre-tax value, GST amount, customer invoice total, tax split, and whether a quoted price protects the entered product cost and target margin.
Percentage Calculator
Solve common percentage questions for marks, discounts, salary changes, rent or EMI share, GST checks, profit or loss, reverse percentage, and percentage points.
Useful for: Use one support tool for percentage arithmetic, understand the correct base, and continue to the calculator that adds decision-specific context.
Monthly Budget
Plan an India-first monthly budget using take-home income, regular expenses, debt payments, family obligations, and a savings target.
Useful for: Understand whether monthly expenses and savings fit within take-home income, identify the largest pressure, and decide what to adjust.
Keep exploring
Related calculator categories
Move to a nearby decision without returning to a long directory.