How Rental Properties Build $1 Million
A leveraged rental builds wealth in three ways at once. This calculator models all three for a set of identical properties bought today and held for the number of years you choose.
- Cash flow: rent minus operating expenses minus the mortgage payment. It can be negative, especially at higher interest rates.
- Appreciation: the property's value rising over time. The US national Case-Shiller index averaged about 4.3% a year from 1987 to mid-2026, with a 27% national decline between 2006 and 2012.
- Loan paydown: every payment retires some principal, so the debt shrinks even if prices are flat.
The Default Example, Step by Step
Three $250,000 rentals, 25% down, 3% closing costs, a 7.25% 30-year mortgage, $2,100 rent and $700 of monthly operating expenses each:
- Cash needed up front: $62,500 down + $7,500 closing = $70,000 per property, $210,000 in total.
- Mortgage payment on a $187,500 loan: about $1,279 a month.
- Year-1 cash flow: $2,100 − $700 − $1,279 ≈ $121 a month per property ($363 for all three).
- After 15 years at 3.5% appreciation, the three properties are worth about $1.26 million and owe about $420,000: about $836,000 of equity.
- With rent and expenses growing 3% a year, the cash flow collected over 15 years adds up to about $247,000, for about $1.08 million of total wealth.
Change one input and the result moves a lot. At 2.5% appreciation the same portfolio ends with about $666,000 of equity instead of $836,000; at a 6% mortgage rate the year-1 cash flow more than doubles to about $276 a month per property. Test pessimistic numbers before buying.
Mortgage Rates Changed the Math
Freddie Mac's Primary Mortgage Market Survey put the average 30-year fixed rate at 7.28% on October 1, 2026, and investment-property loans are usually priced somewhat higher than owner-occupied loans. At these rates the mortgage payment on a 75% loan takes up most of a typical rent, so many deals that cash-flowed at 3–4% rates now break even or lose money monthly. Positive cash flow from day one usually requires a larger down payment, a lower price relative to rent, or both.
The 1% Rule: A Quick Filter, Not a Guarantee
The "1% rule" says monthly rent should be at least 1% of the purchase price ($2,500 on a $250,000 house). It is a rule of thumb from investor forums, not an industry standard. Properties that meet it are rarer in expensive metros, and meeting it does not guarantee positive cash flow once real expenses and today's rates are included. The calculator shows your rent-to-price ratio so you can see how far off a deal is.
Budget for Expenses Honestly
New investors most often under-estimate costs. Line items to include in the operating-expense field:
- Property tax and insurance: look up actual figures for the address; both have risen quickly in many states.
- Vacancy: a month between tenants is about 8% of a year's rent.
- Repairs and capital reserves: roofs, HVAC systems and water heaters wear out. Many investors set aside a fixed percentage of rent or of property value; older buildings need more.
- Property management: if you hire a manager, fees are commonly a percentage of collected rent plus leasing fees.
- HOA dues, utilities you pay, and legal costs where they apply.
Leverage Cuts Both Ways
With 25% down, a 10% rise in value is a 40% gain on your down payment, but a 10% fall wipes out 40% of it. Investors who bought with very little down before 2006 were often underwater when national prices fell 27% by 2012. Keep cash reserves for each property and avoid deals that only work if prices rise.
Taxes: Helpful, but With Limits
- Depreciation: residential rental buildings (not land) are depreciated over 27.5 years under IRS rules (Publication 527). A $200,000 building generates about $7,273 a year of depreciation.
- Passive loss limits: rental losses are generally passive. Taxpayers who actively participate can deduct up to $25,000 of rental losses against other income, phased out between $100,000 and $150,000 of modified AGI (Publication 925). Higher earners usually cannot use rental losses to offset salary unless they qualify as real estate professionals.
- Depreciation recapture: when you sell, depreciation you took is generally taxed at up to 25%.
- 1031 exchanges: reinvesting sale proceeds into like-kind real property within strict deadlines can defer, not eliminate, capital gains tax.
Rules change and depend on your situation; talk to a tax professional before relying on any of these.
Is Rental Investing Right for You?
Rentals are a business: tenant screening, repairs, vacancies and occasional legal issues come with them, and the money is hard to get out quickly. If that sounds unappealing, low-cost index funds or REITs offer real estate exposure without the landlord work. Compare against the S&P 500 to $1M calculator using the same starting cash.