The 1% rule in real estate is a quick screening test for rental properties: the monthly rent should equal at least 1% of the total amount you’ll spend to acquire and prepare the property. Buy and renovate a house for $200,000, and it needs to rent for at least $2,000 a month to clear the bar. The rule is a speed filter, not a financial plan. It tells you whether a listing is worth a closer look, not whether it will actually make money.
How to Run the Calculation
Add the purchase price to any repairs needed to make the property rent-ready. That combined figure is your total investment. Multiply it by 0.01 to get the minimum monthly rent the property needs to produce. A $180,000 house that needs $20,000 in work has a total investment of $200,000 and a target rent of $2,000. If comparable rentals in the neighborhood support $2,000 or more, the property passes the screen. If the honest market rent is $1,600, it fails.
You can also work backward. Divide the expected monthly rent by the total investment. A $200,000 property renting for $1,750 comes in at 0.875%, below the threshold. This version is useful when you already know the rent and want to see where a listing lands without running target numbers in your head.
Getting the Two Inputs Right
The formula only has two numbers, and both deserve real diligence. Underestimate either one and the screen gives you a false pass.
Total Acquisition Cost
The denominator isn’t just the listing price. Add every dollar it will take to get the property rented: roof work, HVAC replacement, cosmetic updates, permits. Get contractor bids or at least a thorough inspection report rather than guessing. Miss $30,000 in repairs and you’ll think a property clears the 1% test when it doesn’t.
Realistic Monthly Rent
Pull rent numbers from listing platforms, recent lease comps for units with the same bedroom count and square footage, and local property managers who work that zip code. Managers usually know what tenants actually signed for recently, not just what landlords asked. Occupancy history matters too. A unit that looks great at $2,000 loses its shine if similar units sit empty for months between tenants.
What the 1% Rule Ignores
The rule compares gross rent to total cost and stops there. It says nothing about whether cash will still be in your pocket once the real bills arrive. A property that passes can still lose money every month.
- Property taxes. Effective rates swing from under 0.3% of assessed value in some areas to over 2% in others.
- Insurance. Landlord policies typically run about 25% more than a standard homeowners policy, with the actual number driven by location, condition, and coverage limits.
- Mortgage payments. Investment property rates currently sit roughly 0.5% to 1% above primary residence rates, putting many investors in the high-6% to low-7% range on a 30-year fixed loan. The 1% rule ignores your financing entirely.
- Vacancy. Turnover means lost rent plus cleaning, marketing, and screening costs. Many investors budget 5% to 10% of gross rent for vacancy, though the real figure depends on the market.
- Maintenance and repairs. A common budgeting rule is 1% of the property value per year, and older properties often run higher.
- Property management. If you hire out tenant calls, expect 8% to 12% of collected rent.
- HOA fees. Monthly assessments on condos and townhomes can erase cash flow on their own.
Mortgage interest, property taxes, insurance, and repairs are deductible against rental income on your federal return, which helps the after-tax picture.1Internal Revenue Service. Instructions for Schedule E (Form 1040) The deductions don’t remove the cash from your monthly outflow.
Where the Rule Breaks Down
A property that passes the 1% screen can be a bad investment, and one that fails can still make you money. The rule has three real blind spots.
Cheap properties clear the bar too easily. A $60,000 house renting for $700 a month hits the target, but that house may need constant repairs, sit in a market with high vacancy, and produce steady turnover costs. Expenses don’t scale down with purchase price. A new roof costs about the same whether the house is worth $60,000 or $200,000.
On the other end, the rule punishes appreciating markets. A $400,000 home renting for $3,200 comes in at 0.8% and fails. If the neighborhood is gentrifying and that home appreciates 5% a year, total return can beat a property that technically passes. The 1% rule only looks at current cash flow. It captures none of the growth.
The rule also says nothing about the quality of the rent. Two properties can each hit 1%, but one might sit in a stable growing market while the other depends on a single local employer. If that employer leaves, the 1% number becomes fiction overnight.
How Location Shapes the Result
Geography decides whether properties in your market will ever pass this screen. In high-cost coastal cities, prices have outpaced rents for years. A $600,000 condo renting for $3,000 hits 0.5%. Those properties can still be profitable through appreciation and tax benefits, but they won’t clear this filter.
Inland markets with lower entry costs often produce properties that meet or exceed 1% because rental demand is strong relative to purchase prices. Midwestern cities, parts of the Southeast, and smaller Sun Belt metros are where investors most often find qualifying listings. Passing the rule and being in a market you actually want to own in aren’t the same question. A property in a declining rural town might pass easily and still be a poor long-term hold.
If you invest in a market where few listings pass, that’s a signal to rely more on cap rate, cash-on-cash return, and appreciation than on the 1% threshold. Rigid adherence in expensive markets means you’ll never buy anything.
What to Check Once a Property Passes
The 1% rule gets a listing through the doorway. Two deeper metrics decide whether you actually want the property.
Cap Rate
The capitalization rate measures return based on net operating income, which is rent minus operating expenses but before the mortgage. Divide annual net operating income by the property’s market value. A property generating $14,400 in annual NOI on a $200,000 value has a 7.2% cap rate. Residential rental investors generally look for something in the 4% to 10% range depending on market and property class. Higher cap rates come with higher yields and usually more risk, worse locations, or older buildings.
Cash-on-Cash Return
Cash-on-cash return tells you what your actual invested dollars are earning. The denominator is just your equity: down payment, closing costs, and renovation money. The numerator is annual pre-tax cash flow after every expense including the mortgage. Put $60,000 into a deal that produces $4,800 a year in cash flow and your cash-on-cash return is 8%. This number reflects your financing, which the cap rate deliberately excludes. Two investors buying the same property with different down payments will see different cash-on-cash returns on identical cap rates.
Companion Shortcuts: The 2% Rule and the 50% Rule
Two other quick rules come up alongside the 1% test.
The 2% rule uses the same math but doubles the threshold. In practice it’s nearly obsolete. Properties that hit 2% almost always sit in deeply distressed neighborhoods with low prices but high vacancy, high maintenance, and difficult tenant situations. Most experienced investors treat the 2% rule as a relic.
The 50% rule estimates expenses rather than screening deals. It says that roughly half of gross rent will go to operating costs before the mortgage. A property bringing in $2,000 a month should be expected to lose about $1,000 to taxes, insurance, maintenance, management, and vacancy. Whatever remains after the mortgage payment is your cash flow. The 50% rule pairs cleanly with the 1% rule: first screen the rent-to-price ratio, then sanity-check whether the cash flow survives operating costs.