About & methodology
WealthStack is a suite of standard loan calculators for India — not locked to one product. Use the same tools for personal, home, car, education, business, and other EMI loans. Amounts display in ₹ (INR).
Product-agnostic by design
Reducing-balance EMI is shared across most retail and many business loans. Loan type only changes the numbers you enter (amount, rate, tenure, fixed vs floating) — not which calculator you need.
Audience & currency
Defaults assume Indian lending practice and INR formatting (including lakh-style grouping). English UI. Tools are educational estimates, not bank quotes.
Education loans & top-ups
Education loans often use simple interest during study/moratorium, then reducing-balance EMI. Use Simple Interest then EMI on outstanding (principal + unpaid interest if capitalized). Loan top-ups: model as a new EMI or merge outstanding + top-up as one principal if the bank combines facilities.
Privacy
Calculations run entirely in your browser. Inputs and results are not uploaded to WealthStack servers for computation. Full details: Privacy Policy.
Loan math (reducing balance)
EMI uses the standard monthly reducing-balance formula. If monthly rate r = R/12/100 and n is months:
EMI = P × r(1+r)^n / ((1+r)^n − 1)
When r = 0, EMI = P / n. Floating paths apply rate resets and re-amortize by adjusting EMI or tenure.
Compound & simple interest
Compound: A = P(1 + r/n)^(nt) with selectable compounding frequency (investments / growth). Simple: I = P × r × t (short-term or moratorium-style interest).
Rounding
Display amounts use two decimal places in ₹. Amortization rows round payment components and adjust the final installment so the balance clears.
What we do not include
- Processing fees, insurance, or prepayment penalties
- Live benchmark rate feeds (you enter assumed resets)
- Tax benefits (e.g. Section 24 / 80C)
- Financial advice or lender offers
Formula module version: 1.0.0