Mortgage Glossary
Plain-English definitions for the most common mortgage terms.
Amortization
The process of paying off a loan over time through regular payments that include interest and principal.
APR
Annual Percentage Rate. A broader measure of borrowing cost than the interest rate; can include certain fees.
ARM
Adjustable-Rate Mortgage. The interest rate can change after an initial fixed period based on an index + margin.
ARM Caps
Limits on how much an ARM rate can change: initial cap (first reset), periodic cap (each reset), and lifetime cap (maximum over the loan).
Down Payment
The amount you pay upfront toward the purchase price. Can be expressed as dollars or a percentage.
DTI
Debt-to-Income ratio. Your monthly debt payments divided by gross monthly income, used by lenders to assess affordability.
Escrow
An account managed by the servicer to pay property taxes and insurance on your behalf, funded via your monthly payment.
Fixed-Rate Mortgage
A loan with an interest rate that stays the same for the entire term.
HOA
Homeowners Association dues. Monthly or annual fees for shared building/community expenses.
Interest Rate
The percentage charged by a lender for borrowing money, used to calculate interest portion of payments.
LTV
Loan-to-Value ratio. Loan amount divided by home value. Higher LTV often means higher risk and possibly PMI.
Margin
For ARMs, a fixed percentage added to the index to determine the fully-indexed interest rate.
Monthly Principal & Interest (P&I)
The base mortgage payment excluding taxes/insurance/HOA/PMI.
PMI
Private Mortgage Insurance. Often required when down payment is less than 20% for conventional loans.
Points
Optional upfront fees paid to a lender to reduce the interest rate. 1 point typically equals 1% of the loan amount.
Principal
The amount borrowed (or remaining loan balance). The principal portion of your payment reduces the balance.
Property Taxes
Taxes assessed by local government based on property value; often paid through escrow.
Term
The length of the loan, commonly 15 or 30 years.