Free tools & calculators
Each calculator shows the arithmetic it used, the assumptions behind it and the source of every rate — so you can check the number rather than trust it.
35 of 35 calculators
GST(6)
Add, reverse and reconcile GST, late fees and interest.
GST Calculator
Add or remove GST and get the CGST/SGST/IGST split.
Open calculatorReverse GST Calculator
Back-calculate the base value from a GST-inclusive price.
Open calculatorGST Late Fee Calculator
Late fee for delayed GST returns, capped as you configure.
Open calculatorGST Interest Calculator
Day-wise interest on late GST payment.
Open calculatorGST Composition Tax Calculator
Composition-scheme tax on turnover.
Open calculatorGST Registration Threshold Checker
Does your turnover cross the GST registration threshold?
Open calculatorIncome Tax(2)
Slab-wise tax, advance tax and effective rates.
TDS(5)
Section-wise deduction and net payable.
TDS Calculator
Deduction and net payable for any section rate.
Open calculatorTDS 194C (Contractor) Calculator
TDS on contractor payments under section 194C.
Open calculatorTDS 194J (Professional Fees) Calculator
TDS on professional and technical fees under 194J.
Open calculatorTDS 194I (Rent) Calculator
TDS on rent of property, plant and machinery.
Open calculatorInterest on Late TDS (234B/C) Calculator
Interest for late TDS deduction or deposit.
Open calculatorSalary & HR(5)
In-hand, HRA, PF, gratuity and professional tax.
HRA Exemption Calculator
Least-of-three HRA exemption, all three amounts shown.
Open calculatorGratuity Calculator
Gratuity payable under the Payment of Gratuity Act.
Open calculatorIn-Hand Salary Calculator
Monthly take-home from gross salary and deductions.
Open calculatorEPF Contribution Calculator
Monthly employee and employer PF contributions.
Open calculatorProfessional Tax Calculator
Monthly professional tax, annualised.
Open calculatorBusiness & Startup(6)
Break-even, runway, dilution and margin.
Break-Even Calculator
Units and revenue needed to break even.
Open calculatorCompany Incorporation Cost Calculator
Total cost to incorporate: MCA fee, stamp duty, DSC, PAN/TAN and professional fees.
Open calculatorStartup Runway Calculator
Months of runway from cash and net burn.
Open calculatorEquity Dilution Calculator
Post-investment ownership after a round.
Open calculatorProfit Margin Calculator
Markup, margin and profit per unit.
Open calculatorInvoice Total Calculator
Line-item total with discount and tax.
Open calculatorLoans & Interest(3)
EMI, amortization, simple and compound interest.
Compliance(7)
Late fees, interest and thresholds.
MCA Name Reservation Fee Calculator
Estimate the SPICe+ Part A fee to reserve a proposed company name.
Open calculatorROC Late Filing Calculator
Additional ROC fees for late annual filings.
Open calculatorMCA Incorporation Fee Calculator
ROC registration fee on nominal share capital, computed slab-wise.
Open calculatorMSME Delayed Payment Interest Calculator
Compound interest on delayed payments to MSME suppliers.
Open calculatorROC Annual Filing Late Fee Calculator
Additional fee on AOC-4 / MGT-7 filings that miss the due date.
Open calculatorTrademark Filing Fee Calculator
Government TM-A fee by applicant type, plus attorney fee per class.
Open calculatorAuthorised Capital Stamp Duty Calculator
State stamp duty payable on a company's authorised share capital.
Open calculatorGeneral(1)
Everyday business maths.