Mortgage Calculators

Free mortgage calculators built on 2026 HUD and FHFA guidelines, live FRED rate data, and deterministic math — no AI guesswork in the numbers. Built by Rayaan Arif.

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Affordability Calculator

How much house can you afford? Enter your income and savings — get three real scenarios (FHA, 3% down, 20% down) with monthly payment, cash needed, and DTI analysis.

First-time buyersIncome-basedFHA + Conventional

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FHA Loan Calculator

Full FHA payment breakdown including UFMIP (1.75%), monthly MIP (0.55%/yr), property taxes, and insurance. MIP duration logic and FHA vs conventional comparison.

2026 HUD limitsMIP breakdownFHA vs Conv

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DSCR Calculator

Rental property cash flow and debt service coverage ratio. Full PITIA breakdown, lender qualification status, and cash-on-cash return. No income docs required.

Investment propertyNo income docsNon-QM

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Refinance Calculator

Breakeven analysis, monthly savings, and rate-watch trigger points for your refi decision. Includes FHA-to-conventional refi math and no-cost refi comparison.

Breakeven analysisRate triggersFHA-to-Conv refi

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Conventional Loan Calculator

Full conventional payment with PMI, exact PMI cancellation year, DTI analysis, and FHA vs conventional comparison. 2026 FHFA limits.

PMI cancellationDTI analysisFannie Mae

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Affordability by salary

See how much house you can afford at specific income levels — with real payment breakdowns, debt impact analysis, and savings requirements.

$80k salary $95k salary $100k salary $120k salary $150k salary

How these calculators work

Every calculator on HomeRates.ai uses a deterministic calculation engine — the same inputs always produce the same output, with no AI estimation in the math. Results match what a licensed loan officer would calculate using the same inputs.

Rate data is pulled live from FRED (Freddie Mac PMMS, updated weekly). Loan limits reflect 2026 FHFA conforming limits and 2026 HUD FHA limits per HUD Mortgagee Letter No. 25-145.

Educational purposes only. HomeRates.ai is not a lender, broker, or mortgage advisor. Results are estimates based on your inputs. Consult a licensed mortgage professional for a formal pre-approval. Equal Housing Opportunity.