Mortgage Basics: Principal, Interest, Term and Amortization
A mortgage is a loan secured by real property. Mortgage structures vary significantly by country, especially around fixed-rate periods, renewal, prepayment, insurance and taxes.
Separate term from amortization
In some markets, the contractual rate term may be shorter than the full amortization period. In others, a fixed rate can last for most or all of the loan. Read local product definitions carefully.
Budget beyond principal and interest
Homeownership costs can also include property taxes, insurance, utilities, maintenance, repairs, association or strata fees and transaction costs.
Stress-test affordability
Consider how the budget would respond to higher rates, reduced income or major repairs. Official mortgage calculators and lender disclosures are better sources for current local rules than generic examples.
A practical next step
Write down the one number or fact from this topic that affects your situation—such as a balance, rate, due date, fee, target amount or policy limit. Then verify any jurisdiction-specific rule with an official source before making a decision.