Business Tools
Free calculators and tools for everyday business tasks — GST and tax, pricing and profit, finance, salary and HR, plus GST invoices. Calculations happen instantly in your browser.
Popular tools
Ordered by what KaroDesk users actually use most.
GST Calculator
Add or remove GST at 0%, 5%, 12%, 18%, 28% with CGST, SGST and IGST split.
Use toolGST Reverse Calculator
Work backwards from a GST-inclusive price to the taxable value and tax amount.
Use toolProfit Calculator
Work out revenue, total cost, profit, margin and markup for any order quantity.
Use toolMargin & Markup Calculator
Compare margin vs markup and find the selling price for a target margin.
Use toolDiscount Calculator
Apply a discount percentage, see savings and add GST on the discounted price.
Use toolEMI Calculator
Monthly EMI, total interest and total payable for any loan amount and tenure.
Use toolInvoice Generator
Create a GST invoice with CGST, SGST, IGST and HSN codes, then download the PDF.
Use toolGST & Tax
Add or remove GST, split CGST/SGST/IGST and work out TDS on payments.
GST Calculator
Add or remove GST at 0%, 5%, 12%, 18%, 28% with CGST, SGST and IGST split.
Use toolGST Reverse Calculator
Work backwards from a GST-inclusive price to the taxable value and tax amount.
Use toolCGST Calculator
Find the Central GST half of an intra-state supply at any GST rate.
Use toolSGST Calculator
Find the State GST half of an intra-state supply and the total tax payable.
Use toolIGST Calculator
Calculate IGST on inter-state supplies and exports at any GST slab.
Use toolTDS Calculator
Deduct TDS at common section rates and see the net amount payable.
Use toolPricing & Profit
Price your products, check margin vs markup and find your break-even point.
Profit Calculator
Work out revenue, total cost, profit, margin and markup for any order quantity.
Use toolMargin & Markup Calculator
Compare margin vs markup and find the selling price for a target margin.
Use toolMarkup Calculator
Add a markup percentage on cost price to get your selling price and profit.
Use toolDiscount Calculator
Apply a discount percentage, see savings and add GST on the discounted price.
Use toolSelling Price Calculator
Set a selling price from cost price using a target margin or markup percentage.
Use toolBreak-even Calculator
See how many units you must sell to cover fixed costs at your price point.
Use toolCommission Calculator
Calculate sales commission, TDS on the payout and what your business keeps.
Use toolFinance
EMIs, loan eligibility, returns and monthly cash flow in plain numbers.
ROI Calculator
Measure return on investment and the annualised return over a holding period.
Use toolEMI Calculator
Monthly EMI, total interest and total payable for any loan amount and tenure.
Use toolLoan Calculator
Find the loan amount your monthly EMI budget can comfortably service.
Use toolCash Flow Calculator
Track money in, money out, closing balance and how long your cash lasts.
Use toolSalary & HR
Turn CTC into in-hand pay, check deductions and calculate overtime.
Salary Calculator
Convert monthly gross salary into net pay after PF, professional tax and TDS.
Use toolCTC Calculator
Break an annual CTC into gross salary, employer PF, gratuity and in-hand pay.
Use toolTake-home Salary Calculator
See monthly take-home pay from annual gross after every standard deduction.
Use toolIncome Tax Calculator
Calculate income tax for FY 2025-26 under the new and old regime with slabs, rebate and cess.
Use toolOvertime Calculator
Work out hourly rate, overtime pay at 1.5x or 2x and total monthly wages.
Use toolBilling & Documents
Create GST invoices and quotations you can download, print or share.
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