You can make money renting houses, and the profit usually comes from four places at once: the monthly rent, long-term appreciation in the property’s value, the loan balance your tenants pay down for you, and tax deductions that shelter the income. A house that looks like it barely breaks even on a spreadsheet can still make you meaningfully wealthier every year once those four are added together. The work is in running honest numbers, qualifying for financing that’s tougher than a regular mortgage, and staying on the right side of landlord-tenant law.
The Four Ways a Rental House Actually Makes Money
Rent is the visible piece. What you can charge is set by comparable rents nearby, and how consistently the unit stays occupied decides whether that income is steady. The national rental vacancy rate was 7.2% in late 2025, so a reasonable budget assumes roughly one month of lost rent per year.1Federal Reserve Bank of St. Louis. Rental Vacancy Rate in the United States Smaller income lines add up too: pet rent averages around $35 per animal per month, parking spots bring in extra where street parking is tight, and coin- or app-based laundry generates a trickle in multi-unit properties.
Appreciation is the quieter engine. Real estate values tend to rise over the long run with population growth and inflation. An investor who buys at $300,000 and sees the property reach $450,000 a decade later has added $150,000 to net worth without any of it showing up as rental income. The gain is unrealized until you sell or refinance, but it is real.
Mortgage paydown works in the background. Every payment your tenants effectively cover chips away at the loan principal, shifting ownership from the bank to you. Finance $240,000 over 30 years and a meaningful chunk of that balance is gone within the first decade. Rising value combined with falling debt widens your equity like a forced savings plan.
Tax deductions are the fourth piece, and they are big enough to deserve their own section below.
What Eats Into Your Profit
The mortgage payment is the starting line, not the finish. Property taxes, insurance, maintenance, vacancy, and management all come off the top before you see a dollar of profit. This is where “profitable” rentals turn into money pits for owners who never ran the real numbers.
A property management company that handles tenant placement, rent collection, and maintenance coordination typically charges 8% to 12% of gross monthly rent. On a $2,000 rental, that’s $160 to $240 gone every month. Self-managing saves the fee but costs time and creates exposure if you don’t know your state’s landlord-tenant rules.
Maintenance surprises people the most. A common rule is to set aside 1% of the purchase price each year. On a $300,000 home, that’s $3,000 annually, which feels generous until the HVAC fails or the sewer line collapses. Older houses and homes with deferred maintenance will blow past that number regularly.
Insurance is different for rentals. A standard homeowners policy does not cover a property you rent out. Landlords need a dwelling fire policy, and the broadest version, a DP-3, covers all risks unless specifically excluded and reimburses lost rent during covered repairs.
Once you stack the mortgage, taxes, insurance, management, maintenance, and vacancy, a house that looked like a cash cow might net $200 a month. That’s not a failure. Positive cash flow at any level, paired with appreciation and equity growth, still builds wealth. The mistake is running optimistic math and being caught off guard by the real math later.
Tax Rules That Change the Math
The tax code is generous to rental owners while you hold the property, and less generous when you sell. Both sides matter.
The most powerful deduction is depreciation. The IRS lets you write off the cost of the building (not the land) over 27.5 years.2Office of the Law Revision Counsel. 26 U.S. Code 168 – Accelerated Cost Recovery System If the structure is worth $275,000, that produces a $10,000 annual deduction with no cash outlay. Depreciation exists only on the tax return, and it often converts a property with positive cash flow into one that shows a paper loss.
Mortgage interest on loans used to buy or improve a rental is fully deductible against rental income.3Office of the Law Revision Counsel. 26 USC 163 – Interest Insurance, repairs, property taxes, and other operating expenses come off in the year you pay them. One important line: repairs that fix something broken (patching a leaky pipe) are deducted immediately, but improvements that add value or extend the property’s life (a new roof) must be capitalized and depreciated.4Internal Revenue Service. Publication 527 (2025), Residential Rental Property
The Passive Loss Trap
Rental real estate is a passive activity to the IRS, so losses generally cannot offset W-2 wages or other active income. If you actively participate in managing the property (choosing tenants, approving repairs, setting lease terms), you can deduct up to $25,000 in rental losses against ordinary income.5Internal Revenue Service. Publication 925 (2025), Passive Activity and At-Risk Rules That allowance phases out starting at $100,000 of modified adjusted gross income and disappears at $150,000. Those thresholds have not been adjusted for inflation since 1993, so they now catch far more households than Congress intended. Above $150,000, unused losses carry forward to future years instead of reducing this year’s tax bill.
What Happens When You Sell
Hold the property more than a year and the profit is taxed at long-term capital gains rates. Most investors land in the 15% bracket; higher earners pay 20%.6Office of the Law Revision Counsel. 26 USC 1 – Tax Imposed Then comes depreciation recapture: the IRS taxes the total depreciation you claimed at a flat 25%. Ten years of $10,000 deductions means $25,000 owed on top of capital gains. Many sellers forget the recapture piece entirely.
You can defer both taxes by rolling the proceeds into another investment property through a Section 1031 like-kind exchange. The deadlines are strict: identify the replacement within 45 days of the sale and close within 180 days, with the funds held by a qualified intermediary the whole time.7Internal Revenue Service. Like-Kind Exchanges Under IRC Section 1031 Touch the cash yourself, even briefly, and the exchange is disqualified.
What Lenders Require to Finance a Rental
Investment property loans carry tighter standards than a mortgage on the home you live in. Every qualifying number moves in the wrong direction.
The minimum down payment for a single-unit investment property through Fannie Mae or Freddie Mac is 15%, giving you a maximum loan-to-value ratio of 85%.8Fannie Mae. Eligibility Matrix On a $400,000 property, that’s $60,000 at closing. In practice, most borrowers put down 20% to 25% because higher equity brings a lower rate and avoids loan-level pricing adjustments that punish thinner-equity loans. For two- to four-unit investment properties, Freddie Mac requires at least 25% down.9Freddie Mac. Maximum LTV/TLTV/HTLTV Ratio Requirements
Fannie Mae’s minimum credit score is 620 for fixed-rate investment loans and 640 for adjustable-rate mortgages.10Fannie Mae. General Requirements for Credit Scores Meeting the minimum gets you approved; scores above 740 get you notably cheaper pricing. The maximum debt-to-income ratio is 45% for manually underwritten loans and up to 50% through automated underwriting.11Fannie Mae. Debt-to-Income Ratios
You also need cash reserves. Fannie Mae requires at least six months of total housing payments (principal, interest, taxes, and insurance) sitting in a liquid account, covering both the rental and your primary residence.12Fannie Mae. Minimum Reserve Requirements
If your personal income doesn’t fit standard underwriting, debt service coverage ratio (DSCR) loans qualify you based on the property’s rent instead of your paycheck. The lender divides expected monthly rent by the total monthly payment; a ratio of 1.0 means rent exactly covers the payment, and most lenders want at least that. Fannie Mae counts only 75% of the market rent estimate when calculating rental income, treating the other 25% as vacancy and maintenance loss.13Fannie Mae. Rental Income
Laws You Have to Follow as a Landlord
Federal, state, and local rules govern almost every part of the landlord-tenant relationship. Ignorance costs owners more money than bad tenants do.
The federal Fair Housing Act makes it illegal to discriminate based on race, color, national origin, religion, sex, familial status, or disability. That covers advertising, screening, lease terms, and eviction decisions.14U.S. Department of Housing and Urban Development. Housing Discrimination Under the Fair Housing Act Many states add categories like source of income, sexual orientation, or age. Unintentional violations still carry civil penalties.
If you deny an applicant based on a credit report or background check, the Fair Credit Reporting Act requires an adverse action notice with the screening company’s contact information, the applicant’s right to dispute inaccurate information, and the right to request a free copy of the report within 60 days.15Federal Trade Commission. Tenant Background Checks and Your Rights Small landlords miss this step often.
For any rental built before 1978, federal law requires you to disclose known lead-based paint hazards before the tenant signs, provide the EPA’s “Protect Your Family from Lead in Your Home” pamphlet, share any existing reports, and include a lead warning statement in the lease.16U.S. Environmental Protection Agency. Lead-Based Paint Disclosure Rule Fact Sheet You don’t have to test for or remove lead, but you must keep the signed disclosure for at least three years after the lease begins.
Security deposit rules are state law. Most states cap deposits at one to two months’ rent, though roughly a third set no statutory maximum. Whether you must hold the deposit in a separate interest-bearing account, how quickly you must return it after move-out, and what you can deduct all vary. Getting any of it wrong is a fast way to lose in small claims court.
Eviction timelines vary too. Most states require a written notice giving the tenant three to five days to pay overdue rent before you can file, while a handful allow immediate filing. Local ordinances often demand longer notice than state law. Every eviction has to go through the court system. Locking a tenant out or shutting off utilities without a court order is illegal in every state and costs far more than the unpaid rent.
Protecting Your Personal Assets
Rentals create liability exposure that catches new owners off guard. If a tenant or visitor is injured and the claim exceeds your insurance, personal savings, home equity, and other assets can be reached.
A landlord DP-3 policy covers broader risks than a homeowners policy and reimburses lost rent during covered repairs. An umbrella policy sits on top, adding liability coverage in million-dollar layers (typically $1 million to $5 million) once your landlord policy limits are used up. The cost is modest for what it covers.
Many investors also hold each property inside its own limited liability company. The LLC puts a legal wall between the property and your personal assets, and between one property and another. If a tenant sues over an injury at one house, the claim is limited to the assets inside that specific LLC. Holding several properties in a single LLC defeats the purpose, because a lawsuit against one reaches all of them. The protection does not cover personal negligence or fraud, which will pierce the LLC no matter how it’s structured.