Annual Percentage Rate (APR)
The Annual Percentage Rate (APR) represents the total yearly cost of borrowing, including the interest rate plus fees, points, and other charges expressed as a percentage. APR is typically higher than the interest rate because it includes these additional costs, making it useful for comparing loan offers from different lenders.
Interest Rate
The mortgage interest rate is the cost of borrowing money, expressed as a percentage of the loan amount charged annually. Rates are influenced by economic factors, your credit score, down payment, loan type, and term. The rate directly affects your monthly payment: on a $300,000 loan, each 1% rate increase adds roughly $170/month to your payment.
Down Payment
A down payment is the upfront cash you pay toward a home purchase, expressed as a percentage of the purchase price. Requirements vary by loan type: conventional allows 3-5% for many first-time buyers, while jumbo loans often require 10-20%. Putting 20% down avoids private mortgage insurance (PMI) on conventional loans.
Home Equity
Home equity is the difference between your home's market value and what you owe on your mortgage. For example, if your home is worth $400,000 and you owe $300,000, you have $100,000 (25%) in equity. Equity builds through mortgage payments and home appreciation. You can access equity through cash-out refinancing, HELOCs, or home equity loans.
Loan-to-Value Ratio (LTV)
Loan-to-value ratio (LTV) is your loan amount divided by the home's appraised value or purchase price (whichever is lower), expressed as a percentage. For example, borrowing $240,000 on a $300,000 home = 80% LTV. Lower LTV means more equity and often better rates. LTV above 80% on conventional loans requires PMI.
Debt-to-Income Ratio (DTI)
Debt-to-income ratio (DTI) compares your monthly debt payments to your gross monthly income. Lenders use two DTI calculations: front-end (housing costs only) and back-end (all debts including housing). Most lenders prefer back-end DTI under 43%, though exceptions can be made with strong compensating factors. Lower DTI improves approval odds and may qualify you for better rates.
Amortization
Amortization is the process of paying off a mortgage through regular payments over time. Each payment includes principal (reducing your balance) and interest. Early in the loan, most of your payment goes to interest; over time, more goes to principal. An amortization schedule shows how each payment is split and your remaining balance throughout the loan term.