Essential Mortgage Terminology

Essential mortgage terminology with plain-language definitions and practical examples

TermPlain-Language DefinitionPractical Example
PrincipalThe amount you borrowed — the loan balance$350,000 loan = $350,000 principal
InterestThe cost of borrowing, expressed as % of the outstanding balance7% on $350K = $24,500/year in Year 1
AmortizationThe gradual payoff schedule that applies fixed payments to interest and principal30-year loan: 360 equal monthly payments
LTV (Loan-to-Value)Loan balance divided by home value — measures equity$280K loan on $350K home = 80% LTV
DTI (Debt-to-Income)All monthly debts divided by gross monthly income$2,000 debts on $6,000 income = 33.3%
PMIPrivate mortgage insurance required when LTV exceeds 80%$0.85% on $300K = $212/month
PITIPrincipal + Interest + Taxes + Insurance = full monthly payment$1,996 + $321 + $140 = $2,457 PITI
EscrowAccount held by servicer for tax and insurance payments$500/month collected; $6,000 disbursed annually
APRAnnual Percentage Rate — includes rate plus fees spread over loan life6.875% rate with fees = 7.1% APR
Conforming LoanLoan meeting Fannie/Freddie guidelines and under the limitUp to $766,550 in most counties (2025)

Qualification Questions Answered

How much income do I need for a $350,000 mortgage? Using the 28% rule: monthly PITI on $315,000 loan (10% down) at 7% is approximately $2,695. Divided by 0.28 = $9,625/month gross income required = approximately $115,500/year. Under the more flexible 36% rule with no other debt: $7,486/month gross = $89,800/year.

What credit score do I need for a conventional mortgage? Minimum 620. But 720 gets you a meaningfully better rate, and 760 gets you the best available rate. The difference between 620 and 760 on a $350,000 30-year loan can be $100,000 to $150,000 in total interest.

Does employment type affect mortgage qualification? W-2 employees have the simplest qualification path. Self-employed borrowers use 2 years of tax returns averaged. Hourly workers use year-to-date earnings. Commission and bonus income requires 2-year history to be counted. All legitimate income types qualify — documentation requirements differ.

Payment and Amortization Questions

Why does so little of my early payment go to principal? Each month's interest is the remaining balance multiplied by the monthly rate. On a $350,000 loan at 7% in Month 1: interest = $350,000 times 0.005833 = $2,042. Your $2,329 payment covers $2,042 in interest first, leaving only $287 for balance reduction. As the balance falls, interest shrinks and principal grows — slowly at first, then accelerating.

Can I make a partial extra payment? Yes, but specify 'additional principal payment' explicitly with your servicer. Extra payments without principal designation are often applied as future payment credits — which do not reduce your balance or save interest. Always confirm your extra payment is being applied to principal reduction.

💡Always Designate Extra Payments as Principal Only

When making any payment above your regular mortgage amount, specify in writing or through the servicer portal that the extra amount is for principal reduction only. Without this designation, servicers may apply it as a prepayment of future scheduled payments — which does not reduce your balance any faster than normal.

Loan Type Questions

Common loan type questions with direct answers

Loan Type QuestionAnswer
What is the conforming limit in 2025?$766,550 in most counties; up to $1,149,825 in high-cost areas
FHA vs. conventional — which is better?Conventional if credit 680+; FHA if credit 580-679 or need lowest down payment
What is a VA loan?No down payment, no PMI, competitive rates — available to veterans and active military only
What is a USDA loan?Zero down, competitive rates — for eligible rural and some suburban properties; income limits apply
What is an ARM?Adjustable-Rate Mortgage: fixed rate for initial period (5, 7, or 10 years), then adjusts annually
What is a jumbo loan?Any loan above the conforming limit; requires 20-25% down, strong reserves, slightly higher rates

Refinancing Questions

Common refinancing FAQ

QuestionAnswer
When should I refinance?When break-even (closing costs / monthly savings) is less than your planned stay duration
How much does refinancing cost?$3,000 to $8,000 in closing costs, or 1 to 3% of loan amount
Does refinancing reset amortization?Yes — a new 30-year loan after 10 years means 40 total years of payments
Can I refinance from ARM to fixed?Yes — one of the most common and usually sound refinance reasons
What is cash-out refinancing?Replace your mortgage with a larger loan and take the difference as cash — secured by your equity
What is a no-cost refinance?Closing costs rolled into a slightly higher rate — break-even is immediate but you pay more over time

Tax and Insurance Questions

Is mortgage interest still deductible in 2025? Yes, for primary and secondary residences on loan balances up to $750,000. The deduction only provides benefit if you itemize — and with the 2025 standard deduction at $29,200 (married filing jointly), most borrowers with loans under $450,000 do not benefit from itemizing. Consult a tax advisor for your specific situation.

Can I cancel PMI before 20% equity? You can request cancellation at 80% LTV based on the original appraised value. If home values have risen, a new appraisal can demonstrate 80% LTV at a higher current value, enabling earlier PMI removal. The Homeowners Protection Act requires automatic cancellation at 78% LTV based on the original amortization schedule.

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