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Mortgage & House Hacking Calculator

Your real monthly payment — and whether rental income changes the math.

Know your real monthly payment.

Estimate your full PITI + HOA + PMI, total interest, and payoff date — or flip to House Hack mode to see how rental income changes the math.

Loan details

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Rental income
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Applied automatically when down payment is less than 20%.
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Rental operating costs
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Your monthly payment

Your cost of living
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Out-of-pocket after rent offsets costs
Estimated monthly payment
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Previewing payment
Month 1
Investor metrics
Effective rent (after vacancy) $0
Monthly cash flow (all rented) $0
Cash-on-cash return 0%
Cap rate 0%
Annual NOI $0

Income vs. expenses

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Amortization schedule

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Mortgage + House Hacking: Plan Your Payment, Then Beat It

Use this free calculator as a standard mortgage calculator — estimate your full monthly payment (principal, interest, taxes, insurance, HOA, PMI), total interest, and payoff date — or flip to House Hack mode to see how renting out extra units can dramatically reduce, or eliminate, your cost of living.

How the Mortgage Calculator Works

Your monthly payment is split into the classic PITI package plus HOA and PMI where applicable. Principal and interest are computed using the standard amortizing-loan formula; taxes and insurance are spread monthly into escrow; HOA is added directly; PMI is applied automatically when your down payment is below 20% and drops off once your loan balance falls below 80% of the original price.

Tax rates vary dramatically by state — from roughly 0.28% in Hawaii to over 2.2% in New Jersey and Illinois — so selecting your state materially changes the headline number.

What Is House Hacking?

House hacking is a real-estate strategy where you buy a small multi-unit property (typically a duplex, triplex, or fourplex), live in one unit, and rent out the others. The goal is simple: let your tenants pay your mortgage. In the best case you live for free, build equity, and generate monthly cash flow.

Key House-Hack Metrics

Key Mortgage Terms

PITI
Principal, Interest, Taxes, Insurance. The complete monthly payment to your lender.
PMI (Private Mortgage Insurance)
Required on conventional loans when your down payment is less than 20%. Typically 0.3%–1.5% of the loan per year. Automatically drops off at 78% LTV.
LTV (Loan-to-Value Ratio)
Loan amount ÷ home value. Above 80% triggers PMI; lower LTV usually means a better rate.
APR
True yearly cost of borrowing — interest rate plus fees and points. Always compare loans by APR, not by rate.
Escrow
Account your lender uses to collect taxes and insurance each month and pay the bills on your behalf.
Vacancy rate
Expected % of the year a unit sits empty. 5–8% is common. Underestimating this is one of the most common house-hack mistakes.
Cash invested
Out-of-pocket cash to close: down payment plus closing costs (roughly 3% of price in this calculator).

Tips to Improve the Numbers

Frequently Asked Questions

How is my monthly mortgage payment calculated?

We use the standard amortizing formula: payment = P × r × (1+r)n ÷ ((1+r)n − 1), where P is the loan, r is the monthly rate, and n is the number of payments. We then add taxes, insurance, HOA, and PMI to give you the complete PITI number. The amortization chart shows exactly how the split between principal and interest evolves over the life of the loan.

When does PMI drop off?

On conventional loans, PMI can be requested at 80% LTV and drops automatically at 78% LTV based on the original home value. This calculator removes PMI from the monthly payment once the balance falls below 80% of price.

Can I house hack with a single-family home?

Yes — by renting rooms instead of units. The "Rent-by-room" preset assumes a single-family home with multiple bedrooms available to rent. Returns can be strong but management is more hands-on.

What loan is best for house hacking?

Low-down-payment loans are popular: FHA (3.5% down) and VA (0% down for eligible veterans). Both require owner-occupancy for at least 12 months, which fits the house-hack model perfectly.

How many units can I house hack?

Residential financing generally caps at 4 units. Five-plus-unit properties fall under commercial financing with stricter terms.

Is a 15-year or 30-year mortgage better for house hacking?

The 30-year gives you flexibility — a lower required payment, higher headline cash flow, and the option to pay extra voluntarily. A 15-year builds equity faster but leaves less cushion if a unit goes vacant. Most house hackers use 30-year.

How much rent should I assume?

Never use the seller's pro-forma numbers. Pull comparable rents from Zillow, Apartments.com, Rentometer, or local listings. Always apply a vacancy allowance of at least 5% and a maintenance reserve of 5–10% of gross rent. "Conservative" scenario in this calculator applies these for you.

Hipoteca + House Hacking: Planifica tu pago y supéralo

Usa esta calculadora gratuita como una calculadora hipotecaria estándar — estima tu pago mensual completo (capital, interés, impuestos, seguro, HOA, PMI) — o cambia al modo House Hack para ver cómo alquilar unidades puede reducir, o eliminar, tu costo de vivienda.

Cómo funciona la calculadora hipotecaria

Tu pago mensual se divide en PITI clásico más HOA y PMI cuando aplica. El capital y el interés se calculan con la fórmula estándar de amortización; los impuestos y el seguro se distribuyen mensualmente en escrow; el HOA se añade directo; el PMI se aplica automáticamente cuando el pago inicial es menor al 20% y desaparece al llegar al 80% LTV.

¿Qué es House Hacking?

Comprar una pequeña propiedad multifamiliar (dúplex, tríplex, cuádruplex), vivir en una unidad y alquilar las demás. La meta: que tus inquilinos paguen tu hipoteca. En el mejor caso vives gratis, construyes capital y generas flujo de caja mensual.

Métricas clave de House Hack

Términos clave

PITI
Principal, Interés, Impuestos, Seguro — el pago mensual completo al prestamista.
PMI
Seguro hipotecario privado. Requerido en préstamos convencionales con pago inicial < 20%. Se elimina automáticamente al 78% LTV.
LTV
Préstamo ÷ valor. Por encima del 80% activa PMI.
Vacancia
% del año que la unidad está vacía. 5–8% común.
Efectivo invertido
Pago inicial + costos de cierre (~3% del precio en esta calculadora).

Preguntas frecuentes

¿Cómo se calcula mi pago mensual?

Usamos la fórmula estándar de amortización y añadimos impuestos, seguro, HOA y PMI para dar el PITI completo.

¿Cuándo desaparece el PMI?

Al alcanzar ~78% LTV. Esta calculadora lo quita del pago mensual cuando el saldo cae por debajo del 80% del precio.

¿Puedo hacer house hacking con una casa unifamiliar?

Sí — alquilando habitaciones en lugar de unidades. Usa el preset "Por habitación".

¿Qué préstamo es mejor para house hacking?

Préstamos con pago inicial bajo: FHA (3.5%) y VA (0% para veteranos elegibles).

¿Cuántas unidades puedo house hackear?

El financiamiento residencial cubre hasta 4 unidades; más requiere préstamo comercial.

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