What is the difference between interest rate and APR?

The interest rate is the note rate used to calculate the monthly principal and interest payment. APR is a broader annualized cost measure that includes certain finance charges. APR can help compare loans, but it does not replace a line-by-line comparison of payment, fees, credits, and cash to close.

Are closing costs the same as cash to close?

No. Closing costs are the fees and charges connected to the transaction. Cash to close is the total amount the buyer needs at closing after adding the down payment, closing costs, prepaid items, escrow deposits, and subtracting credits or deposits already paid.

What terms should I check first on a Loan Estimate?

Start with rate, APR, monthly payment, loan amount, points or lender credits, estimated cash to close, prepayment penalty if any, whether the payment can increase, and which costs are lender-controlled versus third-party or prepaid items.

Glossary

Mortgage terms translated into decisions you can actually use.

Last reviewed April 2026 • Educational content, not individualized financial, tax, or legal advice.

A useful glossary should do more than define words. It should help you read a Loan Estimate, spot the tradeoff inside a quote, and ask a lender a sharper follow-up question. This page explains the terms that usually matter when a payment, rate, closing cost, or approval condition changes the real cost of the loan.

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Best use

Keep this open next to your quote.

When a lender sends a Loan Estimate, rate sheet, or closing-cost worksheet, use this page to separate payment terms from cash-to-close terms.

Northlight rule

Never compare one number alone.

A lower rate can come with higher points. Lower cash to close can come with a higher rate. The useful comparison is the full package.

How to use this glossary

Start with the document in front of you. If you are reading a mortgage calculator result, focus on payment terms such as principal and interest, property tax, insurance, mortgage insurance, HOA dues, DTI, and LTV. If you are comparing quotes, focus on rate, APR, discount points, lender credit, rate lock, origination charge, and cash to close. If you are close to signing, focus on the Closing Disclosure, escrow deposit, prepaids, title charges, and final cash to close.

Payment first

Identify what is recurring every month and what is just paid at closing.

Fees second

Separate lender charges from third-party fees, taxes, insurance, and prepaids.

Credits third

Check whether a lower upfront cost is being paid for with a higher interest rate.

Conditions last

Ask what still needs to be verified before the loan can close.

Common mix-ups Payment & affordability Rates & quotes Loan Estimate & closing Loan types & underwriting ARM & refinance California notes

Terms borrowers often confuse

The most expensive misunderstandings usually come from comparing the wrong numbers. Use this table before deciding that one quote is better than another.

Pair	How to think about it	Question to ask
Rate vs APR	The rate drives the monthly principal-and-interest payment. APR tries to express certain loan costs as an annualized rate.	What are the points, lender fees, credits, and cash to close behind this APR?
Closing costs vs cash to close	Closing costs are fees and charges. Cash to close also includes down payment, prepaids, escrow deposits, and credits.	What amount do I actually need to bring to closing?
Prepaids vs lender fees	Prepaids are early payments for items like interest, taxes, or insurance. Lender fees are charges connected to making the loan.	Which costs change if I choose a different lender?
Escrow account vs escrow company	An escrow account holds money for taxes and insurance after closing. An escrow or settlement company handles the closing process.	Are we talking about monthly impounds or the closing/settlement process?
Prequalified vs preapproved	Prequalification can be a lighter screening. Preapproval is typically stronger when income, credit, and assets have been reviewed.	What documents have actually been reviewed?
Lender credit vs discount points	A lender credit can reduce upfront cost at a higher rate. Discount points increase upfront cost to buy a lower rate.	What is the break-even point compared with a no-points option?

Payment and affordability terms

These terms explain why the monthly payment on a real home is usually larger than the loan payment alone.

Principal and interest

The core loan payment. Principal reduces the loan balance. Interest is the cost of borrowing.

Where you see it: mortgage calculators, Loan Estimate payment tables, and amortization schedules.

Why it matters: it is not the same as total housing cost; taxes, insurance, HOA dues, and mortgage insurance can change the payment materially.

Property tax

A recurring ownership cost paid to local taxing authorities. Many borrowers pay it through an escrow account as part of the monthly payment.

Where you see it: calculator assumptions, escrow account estimates, and closing disclosures.

Ask this: does this estimate include local assessments, special taxes, or only a rough percentage?

Homeowners insurance

Insurance that protects the property and is usually required by the lender. It is separate from mortgage insurance.

Where you see it: monthly payment estimates, prepaid items, and escrow setup.

Why it matters: in some California markets, insurance availability and premium size can affect whether a payment is realistic.

HOA dues

Monthly association dues for a condo, townhouse, planned community, or property with shared amenities or maintenance.

Where you see it: listings, condo documents, affordability worksheets, and DTI calculations.

Ask this: are there pending increases, special assessments, litigation, or reserve issues?

Mortgage insurance

Insurance that protects the lender or investor when the borrower has limited equity or uses certain loan programs.

Where you see it: conventional PMI, FHA mortgage insurance, and USDA annual fee estimates.

Why it matters: two loans with the same rate can have different monthly costs if mortgage insurance differs.

DTI

Debt-to-income ratio. A comparison of monthly debts and housing payment to gross monthly income.

Where you see it: preapproval, underwriting, and affordability calculators.

Practical use: qualifying DTI is not the same as a comfortable budget. A lender may approve a payment that still feels tight.

LTV

Loan-to-value ratio. The loan amount compared with the property value or purchase price.

Where you see it: pricing adjustments, mortgage insurance decisions, refinance approvals, and cash-out limits.

Example: a $600,000 loan on a $750,000 purchase is 80% LTV.

Reserves

Money left after closing that could cover future mortgage payments or emergency expenses.

Where you see it: underwriting conditions, jumbo loans, investment property loans, and self-employed borrower reviews.

Why it matters: using every dollar for down payment can lower the payment but weaken the safety cushion.

Rate and quote language

These terms are where quote comparisons often go wrong. A rate is not a quote by itself.

Interest rate

The note rate used to calculate monthly principal and interest. It does not include every cost of the loan.

Where you see it: Loan Estimate, rate lock confirmation, monthly payment calculation.

Ask this: is this rate locked, and what points or credits are attached to it?

APR

Annual percentage rate. A broader cost measure that includes certain finance charges in annualized form.

Where you see it: Loan Estimate and advertising disclosures.

Use carefully: APR is helpful, but it should be read with the actual payment, points, fees, credits, and cash to close.

Discount points

Upfront charges paid to reduce the interest rate. One point usually equals 1% of the loan amount.

Where you see it: Loan Estimate Section A and quote comparisons.

Ask this: how many months until the monthly savings recover the upfront cost?

Lender credit

A lender-provided credit that reduces upfront cost, usually in exchange for accepting a higher interest rate.

Where you see it: Loan Estimate lender credits and rate options.

Use case: helpful when cash is tight or when you do not expect to keep the loan long enough to justify paying points.

Rate lock

An agreement that holds a specific pricing structure for a defined period, subject to the lender’s lock rules.

Where you see it: lock confirmation and rate quote emails.

Ask this: how long is the lock, what happens if closing is delayed, and what costs change if the lock expires?

Lock extension

An extension of the original rate-lock period when the loan does not close before the lock expires.

Where you see it: delayed closings, construction timelines, appraisal delays, and condition-heavy files.

Why it matters: the cost may be a fee, a pricing adjustment, or a changed credit.

Par pricing

A pricing option with no discount points and no lender credit, or close to neutral depending on the lender’s pricing grid.

Where you see it: side-by-side rate options.

Why it matters: it gives you a useful baseline before deciding whether to buy the rate down or accept a lender credit.

Break-even point

The time it takes for monthly savings from a lower rate to recover the upfront cost paid to get that rate.

Where you see it: points decisions, refinance comparisons, and lender-credit tradeoffs.

Rule of thumb: if you may sell or refinance before break-even, paying points may not help.

Loan Estimate and closing terms

These terms help you move from “what is the payment?” to “what do I need to bring to closing?”

Loan Estimate

The standardized disclosure lenders provide early in the process showing loan terms, projected payment, costs, and estimated cash to close.

Where you see it: after you apply for a mortgage and provide required application details.

Read first: rate, APR, projected payment, loan costs, lender credits, cash to close, and whether the payment can increase.

Closing Disclosure

The later-stage disclosure that shows final loan terms and closing costs before the loan is consummated.

Where you see it: near the end of the transaction.

Compare against: the earlier Loan Estimate, especially rate, points, credits, loan costs, and cash to close.

Cash to close

The estimated total amount needed at closing after down payment, costs, prepaids, escrow deposits, credits, and deposits are accounted for.

Where you see it: Loan Estimate and Closing Disclosure.

Common mistake: confusing cash to close with closing costs. Cash to close is usually broader.

Closing costs

Transaction costs connected to the loan and property transfer, separate from the down payment.

Where you see it: lender fees, title and escrow charges, recording, transfer items, appraisal, credit report, and other settlement charges.

Ask this: which costs are lender-controlled and which are third-party or government-related?

Prepaids

Amounts collected at closing for expenses that begin before or at closing, such as per-diem interest and initial insurance premiums.

Where you see it: Loan Estimate prepaid section.

Why it matters: prepaids affect cash to close, but they are not the same as lender profit or origination fees.

Initial escrow deposit

Money collected at closing to start the account used to pay future property taxes and insurance.

Where you see it: escrow or impound sections of the Loan Estimate.

Ask this: how many months of taxes and insurance are being collected and why?

Origination charge

A lender charge for making or arranging the loan. It may appear as a flat fee, percentage, or bundled cost.

Where you see it: Loan Estimate Section A.

Compare carefully: some lenders show separate line items, while others bundle fees differently.

Title insurance

Insurance related to ownership and lien history. Lender’s title insurance protects the lender; owner’s title insurance protects the buyer’s ownership interest.

Where you see it: title and settlement sections of the closing-cost breakdown.

Ask this: which title charges are required, which are optional, and who customarily pays in your local market?

Loan type and underwriting terms

Loan type affects down payment rules, mortgage insurance, documentation, property eligibility, and pricing.

Conventional loan

A mortgage that is not insured or guaranteed by a government agency. Many conventional loans follow Fannie Mae or Freddie Mac guidelines.

Where you see it: rate quotes, preapproval options, and PMI comparisons.

Useful link: compare the tradeoffs in the mortgage rates and loan options guide.

FHA loan

A loan insured by the Federal Housing Administration, often used by buyers who need more flexible credit or lower down payment options.

Where you see it: first-time buyer conversations, lower down payment scenarios, and mortgage insurance comparisons.

Useful link: read the FHA loan guide.

VA loan

A loan program for eligible veterans, service members, and certain surviving spouses, often with no monthly mortgage insurance.

Where you see it: military buyer preapproval and rate comparisons.

Ask this: how does the VA funding fee affect cash to close or loan amount?

Jumbo loan

A loan that exceeds standard conforming loan limits or otherwise falls outside typical agency loan parameters.

Where you see it: higher-cost California markets, larger loan amounts, and reserve-heavy underwriting.

Useful link: review the jumbo loan guide.

Conforming limit

The loan-size ceiling used for many standard conventional loans. A loan above the applicable limit may be treated differently.

Where you see it: conventional vs jumbo decisions.

Why it matters: loan size can affect rate, documentation, down payment, and reserve expectations.

AUS

Automated underwriting system. A technology-based underwriting engine that evaluates the loan file against program rules.

Where you see it: preapproval and underwriting notes.

Important: an AUS approval still depends on accurate documents, acceptable property, and final lender review.

Conditions

Items the lender still needs before final approval or closing, such as updated pay stubs, explanations, insurance evidence, or appraisal corrections.

Where you see it: conditional approval and closing checklists.

Ask this: which conditions are borrower items, which are property items, and which are third-party items?

Appraisal

An opinion of value and property acceptability prepared for the lender. It is not the same as a home inspection.

Where you see it: purchase approvals, refinance approvals, and property-condition questions.

Why it matters: value can affect LTV, down payment, mortgage insurance, and sometimes the ability to close.

ARM and refinance terms

These terms matter when the payment may change later, or when you are replacing one loan with another.

ARM

Adjustable-rate mortgage. A loan with an initial rate period followed by later adjustments based on the loan’s index, margin, and caps.

Where you see it: 5/6, 7/6, 10/6, or similar ARM product descriptions.

Useful link: test future payment movement with the ARM reset simulator.

Index

The market-based benchmark used to help set the adjusted rate after the initial fixed period of an ARM.

Where you see it: ARM note, Loan Estimate, and ARM program disclosures.

Ask this: which index applies, and how often can the payment adjust?

Margin

The fixed percentage added to the index to determine the fully indexed rate, subject to caps and other loan terms.

Where you see it: ARM disclosures.

Example: if the index is 4.50% and the margin is 2.25%, the fully indexed rate is 6.75% before caps.

Adjustment cap

A limit on how much an ARM rate can change at the first adjustment, each later adjustment, or over the life of the loan.

Where you see it: ARM product terms such as 2/1/5 or 5/1/5 cap structures.

Why it matters: caps shape payment shock, but they do not make the payment risk disappear.

Rate-and-term refinance

A refinance mainly used to change rate, term, or loan structure without pulling substantial cash out.

Where you see it: refinance quote comparisons.

Ask this: what is the monthly savings and what is the break-even period after closing costs?

Cash-out refinance

A refinance where the new loan is larger than the payoff of the existing mortgage, allowing the borrower to receive cash from home equity.

Where you see it: debt consolidation, renovation funding, investment planning, and equity-access decisions.

Useful link: compare alternatives in the HELOC vs cash-out refinance guide.

California notes: terms that deserve extra attention

California buyers should pay special attention to costs that can sit outside a simple principal-and-interest estimate. This is where a generic calculator or quick quote can look cleaner than the real budget.

Supplemental property tax

After a purchase, a county may issue a supplemental tax bill reflecting the change in assessed value. This can surprise buyers who only budgeted for the regular monthly escrow amount.

Mello-Roos and special assessments

Some communities have additional taxes or assessments that may not be captured by a simple property-tax percentage. Check property-specific disclosures.

Insurance availability

In some areas, especially where wildfire exposure is a concern, insurance cost and availability should be checked early instead of treated as a minor default.

Practical move: when you are serious about a property, replace percentage assumptions with property-specific numbers: tax estimate, HOA dues, insurance quote, and any special assessment information. Then rerun the California mortgage calculator with those numbers.

How to read a quote without getting pulled toward the wrong number

A quote is a package. The most useful comparison is not “Which rate is lowest?” It is “Which loan has the best combination of payment, cash to close, points, credits, terms, and risk for the time I expect to keep the loan?”

For monthly budget: compare principal and interest, mortgage insurance, taxes, insurance, HOA dues, and whether the payment can increase.
For upfront cash: compare down payment, lender fees, points, title/escrow charges, prepaids, escrow deposits, credits, and deposits already paid.
For rate tradeoffs: compare one no-points option, one lower-rate-with-points option, and one higher-rate-with-credit option.
For timing: check the rate lock length, closing deadline, extension cost, and whether the quote assumes a specific closing date.

Compare Loan Estimates Read the rates guide Estimate closing costs

Frequently asked glossary questions

What is the first mortgage term I should understand?

Start with principal and interest versus total monthly payment. Many borrowers can understand the loan payment but underestimate taxes, insurance, mortgage insurance, and HOA dues.

Is APR the best way to compare lenders?

APR is useful, but not complete. It can help compare certain costs, but you should still compare payment, points, lender credits, cash to close, lock length, and whether the loan terms are the same.

Why do two lenders show different cash to close?

They may be using different assumptions for points, credits, prepaid interest, escrow deposits, insurance premiums, title charges, taxes, or closing date. Ask both lenders to explain the difference line by line.

What is the most common closing-cost misunderstanding?

Borrowers often treat every amount on the Loan Estimate as a lender fee. Some items are lender charges, but others are prepaid expenses, escrow setup, title/settlement charges, recording fees, or taxes.

Can a glossary tell me which loan is best?

No. It can make the terms understandable so you can ask better questions. The right loan depends on budget, time horizon, down payment, risk tolerance, eligibility, property type, and the actual quote terms.

Document-reading shortcuts

Use these tools when the glossary term points to a decision you need to test.

Quote Comparison Tool

Compare rate, APR, points, credits, monthly payment, and cash to close side by side.

Mortgage Rates Guide

Understand how rate, APR, loan type, points, and credits interact.

Closing Cost Calculator

Estimate how fees, prepaids, escrow deposits, and credits affect cash to close.

California Mortgage Calculator

Test a monthly payment using property-specific tax, insurance, HOA, and mortgage-insurance assumptions.

Reviewed by Northlight Mortgage Education. This page is maintained as general mortgage education and planning support.

It is not a loan quote, approval, legal advice, tax advice, or individualized financial advice. Verify program, pricing, tax, insurance, and underwriting details with the appropriate professional before relying on them.

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