The 1% rule has been the go-to screening tool for rental investors for decades. But with rising home prices and higher mortgage rates, many investors are questioning whether it's still relevant. Here's the honest answer.
The 1% rule is a simple back-of-envelope test for rental property investors. It states that a property's monthly rent should be at least 1% of its total purchase price for it to be worth analyzing further.
The rule originated as a quick way to identify properties likely to generate positive cash flow without running a full analysis. If a property passes the 1% test, it's worth looking at more closely. If it fails badly, it probably won't cash flow with financing.
The math behind the 1% rule is straightforward. With a 20% down payment and a typical mortgage rate, a property that rents for 1% of its purchase price per month will generally produce neutral-to-positive cash flow after accounting for principal, interest, taxes, insurance, and basic maintenance.
At 2026 mortgage rates around 6.5–7%, the 1% rule is actually more important than ever because higher interest costs eat into cash flow more aggressively than they did when rates were at 3%.
The short answer: yes as a screening tool, but no as a guarantee of cash flow.
The 1% rule is best used as a first filter to quickly eliminate obviously bad deals. It is not a substitute for a full financial analysis. Here's why:
| Market | Avg Home Price | Avg Rent Needed | Achievable? |
|---|---|---|---|
| Cleveland, OH | $180,000 | $1,800 | ✅ Yes — easily |
| Memphis, TN | $200,000 | $2,000 | ✅ Yes — commonly |
| Detroit, MI | $160,000 | $1,600 | ✅ Yes — in many areas |
| Indianapolis, IN | $280,000 | $2,800 | ⚠️ Possible in some areas |
| Atlanta, GA | $380,000 | $3,800 | ⚠️ Difficult |
| Austin, TX | $520,000 | $5,200 | ❌ Very rare |
| Los Angeles, CA | $850,000 | $8,500 | ❌ Almost impossible |
| San Francisco, CA | $1,200,000 | $12,000 | ❌ Impossible |
In 2026, serious investors use three metrics together to evaluate deals:
The most important metric for leveraged investors. Target 8%+ in today's rate environment. This accounts for your actual mortgage costs and gives a true picture of your return on invested capital.
The best tool for comparing properties across markets without the distortion of financing. A cap rate of 5–8% is healthy for residential rentals in 2026.
A quick alternative to the 1% rule. Divide the purchase price by annual gross rent. A GRM under 10 is generally good. A GRM of 8 or below is excellent.
The 1% rule is alive and useful in 2026, but it's a starting point — not an endpoint. In high-cost markets it's functionally impossible to achieve, which is why those markets attract appreciation investors rather than cash flow investors. In the Midwest and parts of the Southeast, the 1% rule is still achievable and remains a useful filter.
The most important takeaway: always run the full numbers. A property that barely hits the 1% rule in a high-tax state at a 7% mortgage rate may actually cash flow negatively. A property at 0.8% in a low-tax state with below-market financing might cash flow beautifully.
Our free ROI calculator goes far beyond the 1% rule — see cash flow, cap rate, and cash-on-cash return instantly.
Try the Free ROI Calculator →This article is for informational and educational purposes only and does not constitute financial, investment, tax, or legal advice. Always consult a licensed professional before making investment decisions.