Loans & payments

Mortgage Amortization Explained

See how each mortgage payment splits between principal and interest over time, with sample schedule rows, PITI breakdown, and the impact of extra payments.

How Loan Amortization Works

Amortization splits each loan payment between interest and principal so the loan is fully repaid by the end of the term.

APR vs Interest Rate Explained

The interest rate is the cost of borrowing on the balance; APR includes rate plus certain fees expressed as an annualized percentage.

Percentages

Calculate discounts, markups, margins, and percentage change.

Investment basics

Compound interest, break-even, and simple ROI math.

Everyday finance

Tips, splits, and quick personal finance helpers.