Calculation Methodology
Transparency in how we calculate your financial projections.
Our Approach
Transparency is a core value at WealthWiseGrow. We want you to understand exactly how we arrive at the numbers shown in our calculators. Our methodologies are based on standard financial mathematics and Indian regulatory rules.
Standard Formulas Used
EMI Calculation (Reducing Balance)
EMI = [P x R x (1+R)^N] / [(1+R)^N-1]
Where P = Principal, R = Monthly Interest Rate, N = Number of Months.
Compound Interest
A = P(1 + r/n)^(nt)
Used for FD, RD, and generic investment projections.
SIP (Systematic Investment Plan)
FV = P x [((1 + r)^n - 1) / r] x (1 + r)
Calculates the future value of monthly mutual fund investments.
Tax Calculation Logic
Our tax calculators (Income Tax, GST, HRA) use the latest slabs and rules defined by the Government of India. We update these annually following the Union Budget.
- Income Tax: Supports both Old and New Tax Regimes.
- GST: Applies standard GST rates (5%, 12%, 18%, 28%) to net or gross amounts.
- HRA: Uses the standard three-rule comparison for exemption calculation.
Data Privacy in Calculations
All primary calculations are performed client-side (in your browser). We do not send your personal financial inputs to our servers, ensuring your data remains private and secure.