Mortgage Glossary: 75 Terms Every Homebuyer Should Know
Last updated: October 2026 · Editorial standards
The mortgage industry is full of acronyms and jargon that can be overwhelming for first-time buyers. Here are 75 essential terms explained in plain language.
A
Adjustable-Rate Mortgage (ARM): A mortgage with an interest rate that changes periodically based on a market index. Usually starts with a fixed rate for a set period (e.g., 5/1 ARM = fixed for 5 years, adjusts annually after).
Amortization: The process of paying off a loan through regular payments over time. Early payments are mostly interest; later payments are mostly principal.
Annual Percentage Rate (APR): The true cost of borrowing, expressed as a yearly rate. Includes the interest rate plus certain fees, allowing for accurate comparison between loan offers.
Appraisal: A professional assessment of a property’s market value, required by lenders before approving a mortgage.
Asset: Anything you own with financial value — bank accounts, investment accounts, retirement funds, real estate, vehicles.
B
Balloon Payment: A large lump-sum payment due at the end of a balloon mortgage term. The loan amortizes over a longer period but matures (is due) earlier.
Bridge Loan: A short-term loan that helps buyers purchase a new home before selling their current one.
Buyer’s Agent: A real estate agent who represents the buyer’s interests in a transaction.
C
Cap (ARM): Limits on how much an ARM’s interest rate can change — periodic cap (per adjustment), lifetime cap (total change over loan life).
Cash-Out Refinance: Replacing your existing mortgage with a larger loan and receiving the difference in cash.
Certificate of Eligibility (COE): VA document confirming a veteran’s eligibility for a VA home loan.
Closing: The final step of a real estate transaction where documents are signed, money changes hands, and ownership transfers.
Closing Costs: Fees paid at closing, typically 2–5% of the loan amount. Includes lender fees, title fees, prepaid taxes and insurance.
Closing Disclosure (CD): A standardized document provided at least 3 business days before closing showing final loan terms and costs.
Co-Borrower: A second person on the mortgage application who shares responsibility for the debt.
Conforming Loan: A mortgage that meets Fannie Mae and Freddie Mac standards (including loan limits). Eligible to be purchased on the secondary market.
Conventional Loan: A mortgage not backed by a government agency. Includes conforming and jumbo loans.
Credit Score: A numerical rating (300–850) of your creditworthiness based on credit history. Higher is better.
D
Debt-to-Income Ratio (DTI): Monthly debt payments divided by gross monthly income. Lenders use this to assess repayment ability.
Deed: Legal document transferring property ownership from seller to buyer.
Deed of Trust: In some states, the legal document securing the mortgage to the property (used instead of a mortgage document).
Default: Failure to meet the terms of a loan agreement, most commonly by missing payments.
Down Payment: The upfront cash payment representing the portion of purchase price not covered by the mortgage.
E
Earnest Money: A deposit made when submitting a purchase offer, showing the buyer is serious. Applied to down payment or closing costs at closing.
Equity: The portion of the home’s value you own outright — current market value minus outstanding mortgage balance.
Escrow Account: An account held by the lender to collect and pay property taxes and homeowners insurance on the borrower’s behalf.
F
Fannie Mae (FNMA): Federal National Mortgage Association. Government-sponsored enterprise that purchases conforming mortgages, providing liquidity to the market.
FHA Loan: Mortgage backed by the Federal Housing Administration. Allows lower credit scores and smaller down payments.
Fixed-Rate Mortgage: A mortgage with an interest rate that never changes over the loan term.
Foreclosure: Legal process by which a lender repossesses a property after the borrower defaults on the mortgage.
Freddie Mac (FHLMC): Federal Home Loan Mortgage Corporation. Government-sponsored enterprise similar to Fannie Mae.
Front-End DTI: Housing-related payments (PITI) as a percentage of gross monthly income.
G
Good Faith Estimate (GFE): Older term for the Loan Estimate. Replaced by the standardized Loan Estimate form in 2015.
Gross Income: Income before taxes and deductions. Used in DTI calculations.
H
Hard Inquiry: A credit check that appears on your report and temporarily affects your score. Triggered by loan or credit applications.
HELOC (Home Equity Line of Credit): Revolving credit line secured by home equity. Variable rate, draw as needed.
Home Equity Loan: Lump-sum loan secured by home equity. Fixed rate and term.
Homeowners Insurance: Insurance protecting the home and personal property from damage and liability. Required by lenders.
HUD-1: Settlement statement used in transactions before October 2015. Now replaced by the Closing Disclosure.
I
Index: The benchmark interest rate that an ARM’s rate is tied to (e.g., SOFR, LIBOR — though LIBOR is being phased out).
Interest Rate: The annual cost of borrowing money, expressed as a percentage of the loan amount.
J
Jumbo Loan: A mortgage exceeding conforming loan limits. Requires stricter qualification and usually carries higher rates.
L
Lender Credits: Credits from the lender offsetting closing costs in exchange for a higher interest rate.
Lien: A legal claim on a property, typically for unpaid debts (taxes, contractor bills, HOA dues).
Loan Estimate (LE): Standardized document provided within 3 business days of application showing estimated loan terms and costs.
Loan Officer: A licensed professional who helps borrowers through the mortgage application and approval process.
Loan-to-Value Ratio (LTV): The loan amount divided by the property’s appraised value, expressed as a percentage.
Lock (Rate Lock): A lender’s commitment to hold a specific interest rate for a defined period.
M
Margin: The fixed percentage added to the index rate to set an ARM’s interest rate.
Mortgage Insurance Premium (MIP): Insurance required on FHA loans to protect the lender if the borrower defaults.
Mortgage Points: Fees paid upfront to reduce the interest rate. One point = 1% of the loan amount.
N
Non-QM Loan: A mortgage that doesn’t meet Qualified Mortgage guidelines. Includes bank statement loans, asset depletion loans, and others for non-standard borrowers.
O
Origination Fee: Lender’s charge for processing the loan. May be expressed as a percentage of the loan amount.
Owner’s Title Insurance: Title insurance protecting the buyer’s ownership interest (separate from lender’s title insurance).
P
PITI: Principal, Interest, Taxes, and Insurance — the components of a full mortgage payment.
PMI (Private Mortgage Insurance): Insurance required on conventional loans with less than 20% down. Protects the lender.
Pre-Approval: Formal lender assessment of borrowing capacity based on verified financial documentation.
Pre-Qualification: Informal estimate of borrowing capacity based on unverified self-reported information.
Prepayment Penalty: A fee charged for paying off a mortgage early. Rare in modern mortgages.
Principal: The original loan amount or the remaining loan balance, excluding interest.
Purchase Agreement (Contract): The legal document formalizing the terms of a real estate sale, signed by buyer and seller.
Q
Qualified Mortgage (QM): A loan meeting CFPB standards for consumer protection, including DTI limits and restrictions on certain risky features.
Quitclaim Deed: A deed transferring ownership interest without warranty — common in divorce situations.
R
Rate-and-Term Refinance: Refinancing only to get a better interest rate or loan term (not withdrawing cash).
Real Estate Owned (REO): Property owned by a lender after a failed foreclosure sale.
Refinance: Replacing an existing mortgage with a new one, typically to lower the rate, change the term, or access equity.
Reserves: Liquid assets remaining after down payment and closing costs. Lenders may require 2–6 months of reserves.
S
Second Mortgage: A loan secured by home equity that is subordinate to the first mortgage.
Short Sale: Selling a property for less than the mortgage balance, with lender approval.
Soft Inquiry: A credit check that does not affect your credit score (e.g., background checks, pre-qualification).
T
Title: The legal ownership of a property.
Title Insurance: Insurance protecting against claims or defects in a property’s ownership history.
Title Search: Review of public records to verify ownership and find any liens or encumbrances.
TRID: TILA-RESPA Integrated Disclosure — the rule governing the Loan Estimate and Closing Disclosure forms.
U
Underwriting: The process of evaluating a borrower’s creditworthiness and the property to approve or deny a mortgage.
USDA Loan: Mortgage backed by the U.S. Department of Agriculture for eligible rural and suburban properties.
V
VA Loan: Mortgage guaranteed by the Department of Veterans Affairs, available to eligible service members and veterans.
W
Warranty Deed: A deed guaranteeing the seller’s right to transfer ownership and defending the buyer against future claims.
