📚 Finance calculators
The finance calculators cluster covers borrowing and money math: credit-card payoff and minimums, auto loan and lease payments, mortgage refinance compare, loan comparison, paycheck take-home, 401(k) contribution %, EMI, remaining balance, total interest, payoff progress, refinance break-even, payment-to-income, DTI, LTV, savings tools, and currency conversion—each on a single-intent URL.
Plan borrowing and payoff decisions with EMI, remaining balance, total interest, payoff %, refinance break-even, payment-to-income, amortization splits, biweekly payments, points cost, and equity—plus DTI, LTV, savings tools, paycheck take-home %, credit-card payoff, auto loan payment, 401(k) contribution %, currency conversion, and rent vs buy. For APR, CAGR, and compound growth, use the linked Advanced tools. For nest eggs, IRAs, RMDs, and Social Security estimates, use the Retirement hub.
Key facts
| Primary audience | Borrowers, household planners, analysts, and small-business operators |
|---|---|
| Core formulas | EMI amortization, remaining balance, interest totals, ratio metrics (DTI/LTV/PTI) |
| Category | Finance / lending / personal finance |
| Related hubs | Advanced (APR/CAGR/compound); Real Estate (cap rate, DSCR); Business (ROI/margin) |
Definitions
EMI
Equated monthly installment for a reducing-balance loan: P × r × (1+r)^n ÷ ((1+r)^n − 1).
DTI
Monthly debt payments divided by gross monthly income × 100.
LTV
Loan amount divided by property value × 100.
Formulas
- EMI: P × r × (1+r)^n ÷ ((1+r)^n − 1) with monthly r
- Remaining balance after k payments: P(1+r)^k − EMI × ((1+r)^k − 1) ÷ r
- Total interest: (EMI × n) − P
- DTI %: (monthly debts ÷ gross income) × 100
Comparison table
| Topic | Guidance |
|---|---|
| EMI vs simple interest | EMI amortizes a reducing balance; simple interest applies rate × time to principal only. |
| Payoff % vs payments completed % | Payoff % is principal repaid ÷ original; k/n overstates early principal progress. |
| PTI vs DTI | PTI is one payment ÷ income; DTI includes all monthly debts ÷ income. |
Glossary references
Reinforce entities by pairing percent language with conversion pages when learners mix fractions, decimals, and ratios.
❓ Frequently Asked Questions
How do I find my remaining balance?
Use Remaining loan balance with your original terms and payments made—or rely on your lender’s payoff statement for closing.
When does refinancing pay off?
Use Refinance break-even: closing costs ÷ monthly savings. Stay longer than that horizon for a simple cash payback.
Do you have an EMI calculator?
Yes—the Loan EMI tool computes monthly installments from principal, annual rate, and tenure in months.