Tax and Business Calculators for India
Tax and business calculators are the most time-sensitive tools on RunwayCalc. Current tax pages use FY 2026-27 and AY 2027-28, while archive tax-year pages keep their own canonical URLs. This category also includes salary, GST, business margin and debt-service tools.
What belongs here
Use these tools for old-vs-new regime tax checks, CTC to in-hand salary, HRA exemption, 80C limit, TDS planning, GST, capital gains and business viability ratios.
Which calculator should you use?
Start with income tax or salary for personal tax planning. Use HRA, 80C and TDS for details that affect filing or payroll. Use GST, break-even, profit margin, working capital and DSCR for business decisions.
Most-used calculators
- Tax & BusinessPOPULARUPDATED
Income Tax FY 26-27
Old vs new regime side-by-side, FY 2026-27.
- Tax & BusinessPOPULAR
Income Tax FY 24-25
Old vs new regime side-by-side, FY 2024-25.
- Tax & BusinessPOPULAR
Salary (CTC → in-hand)
Convert CTC to monthly take-home pay.
- Tax & Business
HRA Exemption
HRA exemption under Section 10(13A).
- Tax & BusinessNEW
80C Deduction
Track Section 80C limit and tax saving.
- Tax & BusinessNEW
TDS Calculator
Estimate monthly TDS and shortfall.
- Tax & Business
Gratuity
Gratuity payable on retirement/resignation.
- Tax & BusinessPOPULAR
GST
Add or remove GST; CGST/SGST/IGST split.
- Tax & BusinessPOPULARNEW
Break-even Point
Units and revenue to break even.
- Tax & BusinessPOPULAR
Profit Margin
Gross, operating and net margins.
- Tax & BusinessNEW
Pricing with GST & Fees
Set selling price after GST, platform fees and margin.
- Tax & BusinessPOPULAR
Working Capital
Current and quick ratios.
- Tax & BusinessPOPULAR
DSCR
Debt service coverage ratio.
- Tax & BusinessPOPULARNEW
Capital Gains Tax
STCG / LTCG on equity, debt, property and gold (FY 26-27).
Other categories
Investment
SIP, lump sum, compound interest, withdrawal plans and inflation.
Loans
EMI, prepayment savings and eligibility for any reducing-balance loan.
Retirement & Savings
FIRE, PPF, EPF, NPS, FD and RD with FY 2026-27 rates.
Startup
Runway, dilution, SaaS unit economics and growth efficiency.
Home Renovation
City-wise renovation, interiors, labour, furniture and solar cost planning.