Mortgage & Loan Rates Glossary 2026 — 100+ Key Terms Defined

Your comprehensive reference guide to mortgage & loan rates terminology. Bookmark this page for quick access.

Mortgage & Loan Rates Glossary

Adjustable Rate Mortgage (ARM): A mortgage with an interest rate that changes periodically based on market conditions. The rate typically starts lower than fixed-rate mortgages but can increase or decrease after the initial fixed period.
Amortization: The process of paying off a loan through regular installments over a specified period. Each payment includes both principal and interest, gradually reducing the loan balance to zero.
Annual Percentage Rate (APR): The yearly cost of a loan expressed as a percentage, including the interest rate and other fees or charges. APR provides a more complete picture of the true cost than the interest rate alone.
Appraisal: An independent assessment of a property’s market value conducted by a licensed appraiser. Lenders require appraisals to ensure the property is worth at least the loan amount.
Basis Point: A unit of measurement equal to 0.01% or 1/100th of a percent, commonly used when discussing changes in interest rates. For example, a 50 basis point increase equals 0.50%.
Bridge Loan: A short-term loan that provides funds to bridge the gap between purchasing a new property and selling an existing one. Bridge loans typically have higher interest rates and are meant to be temporary.
Buy-Down: A financial arrangement where the borrower or seller pays points upfront to reduce the interest rate on the loan. The discount results in lower monthly payments over the loan term.
Cap: A limit on how much an interest rate can increase or decrease on an adjustable-rate mortgage. Caps may apply to each rate adjustment period and/or to the lifetime of the loan.
Cash-Out Refinance: A refinancing option where the borrower takes out a new loan larger than the existing one and receives the difference in cash. This allows homeowners to access equity built up in their property.
Certificate of Deposit (CD): A savings product offered by banks where funds are deposited for a fixed term at a guaranteed interest rate. CDs typically offer higher rates than regular savings accounts but have early withdrawal penalties.
Conforming Loan: A mortgage that meets the guidelines set by government-sponsored enterprises like Fannie Mae and Freddie Mac. Conforming loans have lower interest rates because they can be sold in the secondary market more easily.
Credit Score: A numerical rating of a borrower’s creditworthiness, typically ranging from 300 to 850. Credit scores are based on payment history, credit utilization, length of credit history, and other factors.
Debt-to-Income Ratio (DTI): The percentage of gross monthly income that goes toward debt payments, including the new mortgage. Lenders typically prefer a DTI ratio below 43% to approve a loan.
Discount Points: Fees paid upfront to a lender to reduce the interest rate on a mortgage, with each point typically costing 1% of the loan amount. Borrowers use points to lower their monthly payments.
Document Verification: The process of reviewing and confirming the authenticity and accuracy of financial documents submitted with a loan application. Lenders verify income, assets, employment, and credit history through this process.
Down Payment: The amount of money a borrower pays upfront when purchasing a property, expressed as a percentage of the purchase price. Common down payment amounts range from 3% to 20% depending on the loan type.
Due Diligence: The thorough investigation and analysis that lenders conduct on a borrower and property before approving a loan. Due diligence includes credit checks, appraisals, and verification of all documentation.
Effective Interest Rate: The actual annual interest rate on a loan after accounting for compounding and all fees involved. The effective rate is typically higher than the stated rate due to these additional costs.
Escrow: A neutral third-party account that holds funds and documents during a real estate transaction until all conditions are met. Escrow accounts may also hold property taxes and insurance payments collected from monthly mortgage payments.
Fixed Rate Mortgage: A mortgage with an interest rate that remains the same for the entire loan term. Fixed-rate mortgages provide payment stability and predictability, making budgeting easier for borrowers.
Flood Insurance: Insurance coverage that protects property owners against losses from flooding, which is not covered by standard homeowners insurance. Flood insurance is often required for properties in designated flood zones.
Forbearance: A temporary reduction or pause in loan payments granted by a lender when a borrower faces financial hardship. Forbearance differs from forgiveness as the payments must eventually be made up.
Ginnie Mae (GNMA): Government National Mortgage Association, a government-owned entity that guarantees mortgage-backed securities. Ginnie Mae securities are backed by the full faith and credit of the U.S. government.
Good Faith Estimate: A document provided by lenders that lists estimated closing costs and loan terms within three days of application. This estimate helps borrowers compare loan offers between different lenders.
Gross Monthly Income: The total income earned before taxes and deductions are subtracted. Lenders use gross income to calculate debt-to-income ratios and determine borrowing capacity.
Home Equity Line of Credit (HELOC): A revolving line of credit secured by the equity in a home that allows borrowers to borrow and repay funds as needed. HELOCs typically have variable interest rates and are useful for ongoing expenses.
Home Inspection: A comprehensive evaluation of a property’s structural and mechanical systems conducted by a professional inspector. Home inspections help identify potential issues before purchase and can impact the final sale price.
Interest Rate: The percentage of the principal charged by a lender as the cost of borrowing money. Interest rates vary based on market conditions, creditworthiness, and loan type.
Interest-Only Loan: A loan structure where borrowers pay only the interest for a specified period before beginning to pay down the principal. Interest-only loans typically have lower initial payments but result in higher total interest paid.
Jumbo Loan: A mortgage that exceeds the conforming loan limits set by government-sponsored enterprises. Jumbo loans typically have higher interest rates and stricter qualification requirements.
Lender Credit: Funds provided by the lender to offset closing costs or help with the down payment, often given in exchange for accepting a higher interest rate. Lender credits reduce out-of-pocket expenses at closing.
Loan Origination Fee: A fee charged by lenders for the costs associated with processing and underwriting a loan application. This fee is typically 0.5% to 1.5% of the loan amount and is paid at closing.
Loan-to-Value (LTV) Ratio: The percentage of the property’s value that is being financed by the lender, calculated as the loan amount divided by the property value. Lower LTV ratios indicate less risk for the lender.
Lock-in Rate: A guarantee by a lender that the interest rate quoted will not change during a specified period. Rate locks protect borrowers from rate increases while their loan is being processed.
Margin: The percentage points added to an index rate to determine the fully-indexed rate on an adjustable-rate mortgage. Margins typically remain constant throughout the loan term.
Mortgage Insurance Premium (MIP): Insurance required on FHA loans to protect the lender in case of default, paid either as an upfront premium or as an annual fee. MIP can represent a significant portion of monthly mortgage payments.
Negative Amortization: A loan payment structure where the monthly payment is insufficient to cover interest, causing the principal balance to increase over time. This occurs on some adjustable-rate mortgages with payment caps.
Non-Conforming Loan: A mortgage that does not meet the guidelines of government-sponsored enterprises and cannot be easily sold in the secondary market. Non-conforming loans typically carry higher interest rates due to increased risk.
Origination: The process of creating a new loan, including application, underwriting, appraisal, and approval. Loan origination typically takes 30-45 days from application to closing.
Points: Fees paid to a lender equal to 1% of the loan amount, used to buy down the interest rate or pay for loan origination. Points can be paid by the borrower or seller depending on the purchase agreement.
Prime Rate: The interest rate that banks charge their most creditworthy customers, serving as a benchmark for other interest rates. The prime rate is influenced by the Federal Reserve’s actions.
Private Mortgage Insurance (PMI): Insurance required when a conventional loan’s down payment is less than 20% of the purchase price. PMI protects the lender and can be removed once the borrower builds sufficient equity.
Property Tax: An annual tax assessed on real property by local governments, typically paid through mortgage escrow accounts. Property tax rates vary significantly by location and affect the total cost of homeownership.
Rate Lock Period: The time frame during which a lender guarantees a quoted interest rate will not change. Rate lock periods typically range from 30 to 60 days and may be extended for an additional fee.
Refinance: The process of replacing an existing loan with a new one, typically to obtain better terms or access equity. Refinancing requires a new application, appraisal, and closing process.
Reverse Mortgage: A loan for homeowners aged 62 or older that allows them to borrow against their home equity without making monthly payments. The loan balance becomes due when the borrower sells, moves, or passes away.
Secondary Market: The market where existing mortgages are bought and sold between financial institutions. The secondary market provides liquidity to lenders and helps keep mortgage rates competitive.
Stated Income Loan: A loan type where borrowers state their income without providing documentation to verify it. These loans carry higher interest rates due to the increased risk of misrepresentation.
Subordination: An agreement where one lender accepts a lower priority position than another lender in case of foreclosure. Second mortgages are subordinate to first mortgages.
Title Insurance: Insurance that protects the lender and borrower against loss due to defects in the property’s title or ownership. Title insurance is typically required by lenders and is a one-time cost at closing.
Truth in Lending Act (TILA): Federal legislation that requires lenders to disclose the true cost of credit and standardize how loan terms are presented. TILA disclosures help borrowers compare loan offers from different lenders.
Underwriting: The process of evaluating a borrower’s creditworthiness and the property’s value to determine loan approval. Underwriters review all documentation and may request additional information before making a decision.
Yield Spread Premium (YSP): Compensation paid to mortgage brokers when they provide a loan at a rate higher than the wholesale rate. YSP disclosure is required under TILA to ensure transparency in broker compensation.

Last updated: April 2026