House Hacking ROI Calculator

How to Use the House Hacking Calculator

House Hacking — the Lowest-Risk Entry into Real Estate

An owner-occupied loan asks 3.5% down where an investment loan asks 25%

Frequently Asked Questions

• What is house hacking?+
  House hacking is buying a small multi-unit property (a duplex, triplex, or fourplex), living in one unit, and renting the others. The rent from the other units offsets your mortgage and expenses, often reducing your housing cost to a few hundred dollars a month or eliminating it entirely, while you build equity on the whole building. It is often described as the lowest-risk way to start in real estate — the risk is lower because you would need somewhere to live anyway, not because the numbers cannot go wrong.
• How much down payment do I need?+
  Because you will live in the property, you can use owner-occupied financing. FHA insures one-to-four-unit principal residences with a minimum required investment of 3.5% of the adjusted value for borrowers with a credit score of 580 or above — 10% below that (HUD Handbook 4000.1). Fannie Mae allows 95% LTV, i.e. 5% down, on a two-to-four-unit principal residence purchase since its November 2023 change (previously 85% for a two-unit and 75% for three-to-four). By contrast an investment-property purchase is capped at 85% LTV for one unit and 75% for two-to-four units — 15% to 25% down (Fannie Mae Eligibility Matrix). That low down payment is the core of why house hacking produces such high returns on cash invested. You will also need closing costs and a cash reserve, both of which count as cash invested here.
• What is cash-on-cash return here?+
  This calculator measures cash-on-cash as your annual housing benefit (the market rent you avoid, minus your net out-of-pocket cost) divided by the cash you invested (down payment plus closing costs). It captures the value of living for little or free. It does not include equity buildup, appreciation, or tax benefits — all of which add to your total return — so the true ROI is typically higher than the figure shown.
• Can the rent count toward qualifying for the loan?+
  Yes, under both major programs. Fannie Mae's Selling Guide (B3-3.8-02, Rental Income from the Subject Property) has the lender multiply the gross monthly rent of the non-owner units by 75% — the other 25% standing in for vacancy and maintenance — and count the result toward qualifying income on a two-to-four-unit principal residence, documented by leases or the appraiser's rent schedule. FHA applies its own rental-income rules under Handbook 4000.1. Either way this can raise the price you qualify for substantially; ask your loan officer which documentation they will need before you make an offer.
• What expenses should I include?+
  Property tax, insurance, maintenance and repairs, and a vacancy allowance for the rented units, plus any HOA fees, utilities you cover, and property management if you use it. A common rule of thumb sets aside 30–40% of collected rent for operating costs and reserves. Don't forget capital expenditures (roof, HVAC, appliances) — budgeting for them prevents a single big repair from wiping out a year of savings.
• What are the downsides?+
  It's not passive. You live near your tenants, handle maintenance and tenant issues, and carry the entire mortgage during any vacancy. Privacy is lower than a single-family home, and owner-occupied loans typically require you to live there at least a year. The fix is conservative underwriting: assume some vacancy, keep a healthy reserve, and make sure the deal still works if a unit is empty for a month or two.
• Can I house hack a single-family home?+
  Yes — by renting out spare bedrooms, a finished basement, or an accessory dwelling unit (ADU). The economics are usually milder than a true multi-unit because you share living space, but the principle is the same: tenants offset your housing cost. Enter the spare-room rent as your "rent from other units" to model it. This is also the most common form of house hacking outside the US.
• When can I move out and keep the property?+
  Most owner-occupied loans require a one-year occupancy. After that, you can move out, rent your former unit too, and the property becomes a full rental — often cash-flowing strongly now that every unit is income. Many investors then repeat the play: buy another owner-occupied multi-unit with a low down payment and house hack again, building a portfolio one year at a time.
• Is the rental income taxable?+
  Yes. In the US, rent you collect is reported on Schedule E, and IRS Publication 527 (Renting Part of Property) has you divide expenses between the rented and personal parts — the rented share of mortgage interest, property tax, insurance, repairs and depreciation is deductible against the rent, while the part you live in is treated like any owner-occupied home. In Singapore, IRAS taxes rental income at the resident progressive rates and lets you claim either actual deductible expenses or deemed expenses of 15% of gross rent. In Malaysia, rental income is taxable under section 4(d) of the Income Tax Act 1967 with deductions for assessment, quit rent, insurance, repairs and loan interest. The calculator shows pre-tax figures; take the after-tax question to a professional.
• Does this work in Singapore or Malaysia?+
  The duplex model is uncommon, but the room-rental version works well. In Singapore an owner of a 3-room or larger HDB flat may rent out spare bedrooms — at most one bedroom and six occupants in a 3-room flat, two bedrooms and eight occupants in a 4-room or larger, counting the owners — and may do so before completing the Minimum Occupation Period provided the owner continues to live in the flat; renting out the whole flat needs the five-year MOP first (HDB). Rooms in a private condominium follow the URA and the estate's own rules. In Malaysia, renting spare rooms in a landed home or condominium is straightforward. In both, the rent offsets your mortgage and is taxable. Enter the room rent as "rent from other units" and set the down payment to your actual loan's requirement to model your net cost.

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