Analyze your house hacking deal: monthly cash flow, annual ROI, cash-on-cash return, and 5-year wealth projection.
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3–20% for owner-occupied multi-unit
Units you rent out (you live in one)
What you'd pay to rent your unit
Typical 5–10%
% of rental income (5–10%)
% of rental income or $0 if self-manage
Conservative 2–4%
The Chen family is buying a $340,000 home in Columbus, Ohio. Combined income $115,000, 10% down payment, 30-year fixed at 7.125%.
Takeaway: Columbus/Franklin County averages are the reference baseline. Property tax rates and insurance premiums shift significantly by ZIP code and HOA status. Plug your actual numbers in above.
We default to state-average millage rates. County and municipal rates vary 40%+ within a single state. Ohio ranges from 0.8% (rural counties) to 2.4% (Cuyahoga/Cleveland area). Always cross-check your specific county assessor's published effective rate.
Property Tax by StateHomeowner association fees add $100-$800/month in condos and planned communities. Condos in urban markets often run $400-$700/month. If your property has HOA, add it manually to any payment estimate — it directly affects your debt-to-income ratio for loan qualification.
HOA Fee CalculatorClosing costs typically run 2-5% of the loan amount — around $6,000-$15,000 on a $300K home. Lender fees, title insurance, escrow, and prepaid taxes add up fast. These are due at closing in cash, not rolled into the mortgage by default.
Closing Costs CalculatorPrivate mortgage insurance (PMI) costs 0.5-1.5% of the loan annually until you reach 20% equity. On a $300K loan at 1%, that's $250/month. PMI cancels automatically at 78% LTV under federal law — but you can request removal at 80%.
National home price appreciation has averaged ~4% annually since 1968, but markets diverge dramatically. Sun Belt metros averaged 10%+ during 2020-2022; coastal markets often lag the national average during correction cycles. Local supply constraints are the main driver.
If you've lived in the home 2 of the last 5 years, you can exclude $250K (single) or $500K (married) of gain from federal capital gains tax. Many calculators show gross profit without applying this exclusion. Relevant when projecting sale proceeds.
Home Sale Capital Gains CalculatorBased on your inputs
Cash flow + equity build
Negative cash flow
To recoup down payment
218.7% total return
| Purchase Price | $400,000 |
|---|---|
| Down Payment (20%) | $80,000 |
| Mortgage Amount | $320,000 |
| Monthly Mortgage Payment | $2,129 |
| Gross Rental Income (Annual) | $36,000 |
| Effective Rental Income (after vacancy) | $34,200 |
| Maintenance & Repairs | $2,736 |
| Property Management | $2,736 |
| Property Tax + Insurance | $6,000 |
| Annual Cash Flow | -$2,820 |
| Annual Equity Build (Principal + Appreciation) | $22,667 |
| Personal Unit Value (Savings vs Rent) | $14,400 |
| Total Annual Return | $34,247 |
| Annual ROI | 42.80881356473258% |
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House hacking is buying a multi-unit property (duplex, triplex, 4-plex), living in one unit while renting out the others. The rental income helps cover your mortgage and expenses, making your housing cost-free or cash-flow positive.
Annual ROI = (Annual Cash Flow + Mortgage Paydown + Appreciation) ÷ Total Cash Invested. This captures three wealth-building mechanisms: cash, equity, and appreciation.
Cash flow is money in your pocket each month. ROI includes cash flow PLUS equity you're building (mortgage paydown + appreciation). ROI better captures total wealth building.
15–25%+ annual ROI is strong for house hacking. This beats typical stock market returns and accounts for leverage, tax benefits, and forced appreciation through live-in occupancy.
Leverage amplifies ROI. A 20% down payment creates 5x leverage. Your cash invested is smaller, so the same return percentage appears larger. However, more leverage = higher risk.
Yes. FHA loans allow purchase of 2-4 unit properties with just 3.5% down, making house hacking very accessible. You may want to live in one unit as your primary residence. This is one of the most popular strategies for first-time real estate investors.
Duplexes, triplexes, and fourplexes are ideal because they qualify for residential financing with owner-occupancy. Single-family homes with finished basements or ADUs also work. Properties near colleges, hospitals, or transit hubs attract reliable tenants and higher rents.
If your mortgage is $2,000 per month and rental units generate $1,500, your effective housing cost is only $500. Many house hackers achieve zero or negative housing costs, meaning tenants cover the entire mortgage plus generate profit each month.
You can deduct mortgage interest, property taxes, insurance, repairs, and depreciation on the rental portion of the property. If you rent 2 of 3 units, two-thirds of eligible expenses are deductible. Depreciation alone can significantly reduce your taxable rental income.
Risks include tenant vacancies, property damage, unexpected maintenance costs, living next to tenants, and being a landlord. Bad tenants can cause significant financial and legal headaches. Mitigate risks with thorough tenant screening, an emergency fund, and landlord insurance coverage.
Annual Cash Flow = Rental Income − Operating Expenses − Mortgage
Annual Equity Build = Mortgage Paydown + Property Appreciation
Annual ROI = (Cash Flow + Equity Build) ÷ Down Payment × 100%
Break-Even = Time until cumulative returns ≥ down payment
Every formula on this page traces to a federal agency, central bank, or peer-reviewed institution. We cite the rule-makers, not secondhand blogs.
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Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.