Mortgage Affordability Rules
Learn the mortgage ratios and costs that matter before comparing home prices, rates, points, and down payments.
Read guidePractice mortgage questions with answers on DTI, LTV, PMI, escrow, fixed rates, ARMs, points, and affordability rules.
Open each answer only after you try it. For a scored version with shuffled answers and a downloadable report, use the matching interactive quiz.
Principal is the loan balance on which interest is charged.
Fixed-rate loans reduce interest-rate uncertainty.
ARMs adjust according to contract rules after initial periods.
A larger down payment can reduce borrowing and some costs.
Escrow helps pay property-related bills through the lender.
Discount points are upfront costs that may reduce rate.
LTV measures how much of the property is financed.
Preapproval gives a lender-based estimate subject to final underwriting.
Loan amount is 240000, and 240000 divided by 300000 is 80 percent.
Private mortgage insurance protects the lender, not the borrower.
Total housing affordability includes more than loan repayment.
Points require breakeven analysis.
Adjustable-rate mortgages can reset under contract terms.
A lower monthly payment can still cost more if term and fees change.
DTI equals monthly debt payments divided by gross monthly income.
Escrow accounts estimate future bills and may need adjustment.
Borrowing more can raise payment and insurance requirements.
Preapproval generally involves more lender review.
Amortization tracks loan balance decline over time.
Amortizing loans often pay more interest at the beginning.
High housing cost can crowd out other goals.
Rate locks can preserve quoted rates for a period.
Closing costs are transaction costs beyond down payment.
Appraisals help lenders assess collateral value.
LTV measures the financed share of the property.
Use the guide first if the topic feels weak, or take the quiz first and return here when the score report shows a gap.
Learn the mortgage ratios and costs that matter before comparing home prices, rates, points, and down payments.
Read guideA practical guide to the budgeting mistakes that quietly break monthly cash flow, savings goals, and debt payoff plans.
Read guideUnderstand why revolving balances, limits, statement timing, and reported utilization can change credit-score outcomes.
Read guideOne quiz gives a score. A cluster gives a learning map. Move from personal-finance basics into bachelor-level finance and calculation-heavy scenarios, then use the explanations to spot weak areas.
82 applied calculation questions on NPV, WACC, CAPM, bonds, ratios, options, FX, margin, and valuation.
Corporate finance, investments, capital budgeting, portfolio risk, derivatives, and financial statement interpretation.
Payment history, utilization, inquiries, credit reports, disputes, and practical borrowing habits.
Cash reserve sizing, access, job-risk, deductibles, debt pressure, and refill discipline.
Most visitors arrive with one question: build, test, price, or trust. These shortcuts keep the path practical.
Save on listed MT4, MT5, Pine Script and custom-indicator development prices through September 30, 2026.
View discounted pricingFinal fixed quotes depend on the approved project scope. Existing agreements, the separate $30 source-code product and the $50 forecast engine are excluded. Cannot be combined with another discount.