More mortgage calculators
Use these calculators to stress-test refinance decisions, rent versus buy, DTI, cash-to-close, maintenance reserves, and escrow shock.
Last updated 2026-05-04. Educational planning only.
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Each calculator is designed for a narrow planning problem and includes SEO / AI-readable answers, formulas, FAQs, shareable scenarios, and CSV export.
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Compare your current mortgage to a refinance using closing costs, points, cash-out, cost roll-in, and how long you plan to keep the loan.
Niche angle: Most refinance calculators stop at simple monthly savings. This one adds whether you will keep the loan long enough to recover closing costs and whether rolling costs into the loan hides the real payback.
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Compare renting and buying with utilities, maintenance, transaction costs, appreciation, selling costs, and renter investment opportunity cost.
Niche angle: Most rent-vs-buy calculators underweight real ownership friction. This one includes utilities, maintenance reserves, closing costs, selling costs, and the investment value of cash not used for a home purchase.
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Check front-end DTI, back-end DTI, true-cost burden, leftover cash, and stress-rate affordability in one calculator.
Niche angle: Most DTI tools stop at lender-style ratios. This one adds the expenses people actually feel after closing: utilities, maintenance, normal living costs, and leftover monthly cash.
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Estimate down payment, closing costs, escrow setup, prepaids, moving costs, immediate repair buffer, and post-close reserve gap.
Niche angle: Most closing-cost calculators estimate the transaction. This one also checks whether the purchase leaves you under-reserved immediately after moving in.
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Estimate a realistic monthly home maintenance reserve using home value, square footage, age, condition, climate risk, and major upcoming projects.
Niche angle: Most maintenance calculators use a generic 1% rule. This one compares value-based and square-foot checks, then adds age, condition, climate, and known project timing.
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Stress test your monthly mortgage payment if property taxes, homeowners insurance, escrow shortages, or required cushions increase after closing.
Niche angle: Most mortgage calculators show the first payment. This tool stress-tests the payment after reassessment, insurance increases, escrow shortages, and cushion requirements.