LoanbieGuides
Plain-English guides that explain the math behind loans and mortgages, with worked examples you can check in the calculators.
How to Calculate Mortgage Payments (Step-by-Step)
Learn how to calculate your monthly mortgage payment by hand, including principal, interest, taxes, and insurance. Step-by-step example with the full formula.
Loan Payment Formula Explained (with Examples)
Understand the loan payment formula M = P × r × (1 + r)^n / ((1 + r)^n − 1), with a worked example and tips to reduce total interest.
How to Read an Amortization Schedule
Learn to read an amortization schedule: payment number, principal, interest, and balance. See how extra payments save interest and shorten your loan.