The 1% rule — is it still relevant in 2026?

What the 1% rule said

If a property's gross monthly rent is at least 1% of the all-in purchase price (purchase + closing + immediate rehab), it's probably worth deeper analysis. A $200k property renting for $2,000/mo passes. A $300k property renting for $2,000/mo (0.67%) doesn't.

That was the heuristic. It was never a buying signal — only a screening signal. A pass meant "underwrite further." A fail meant "skip to the next listing."

Why it worked in 2010-2018

In low-interest-rate environments, the 1% rule lined up nicely with positive cash flow. With 4-5% mortgage rates and stable insurance/property tax, a 1% rent-to-price ratio reliably produced 8-12% cash-on-cash returns after operating expenses.

The math:

• 1% monthly rent = 12% annual gross rent ÷ price
• After 40-50% operating expense ratio (vacancy + opex + management): ~6-7% NOI yield
• Levered at 4% on 75% LTV: 8-12% cash-on-cash on the down payment

That penciled. Everywhere.

Why it broke

Three things happened in 2020-2024:

1. Prices ran 40-60% in most metros. Same building, much higher denominator.
2. Rents lagged. Rents grew 20-30% in the same window — meaningfully less than prices.
3. Rates doubled. Interest doubled to 7%+; insurance ran 2-4× in disaster-exposed markets; property taxes ran with assessed values.

Result: a property that hit 1% in 2018 might be at 0.55-0.65% in 2026, and the financing costs eat what little spread remains.

Where 1%+ still exists

You can still find it, but the geography narrowed:

• Tertiary midwest (Cleveland, Dayton, Toledo, Indianapolis suburbs, parts of Memphis, Birmingham)
• Rust Belt class C (Detroit, Pittsburgh, Buffalo at the right price point)
• Some Texas exurbs (post-correction submarkets in DFW/Houston metro periphery)
• Distressed/off-market deals in any metro

The trade-off in those markets is usually crime, tenant quality, capex intensity, or appreciation flatness. You collect on cash flow but the property doesn't compound.

What to use instead

Better screening heuristics for 2026:

1. Cap rate vs. market. If the property cap rate is at least 150-250 bps above the prevailing 10-year Treasury and 50-100 bps above your market's recent comp trades, it's worth underwriting. (See What's a good cap rate.)
2. Cash-on-cash threshold. Most active investors target ≥ 8% CoC at year 1 with conservative inputs.
3. DSCR at target loan. If the property can support a 1.20+ DSCR loan, the income covers the debt with margin. Test it in the DSCR Loan Calculator.
4. 5-year IRR. Includes rent growth, principal paydown, and modest appreciation. If 5-year IRR is below 12-15%, the deal probably loses to passive alternatives.

Bottom line

Don't throw out the 1% rule — just remember what it was. A 20-second sniff test for whether a deal is even worth opening a spreadsheet for. The math that backed it required cheap rates and a different price level. Today, treat 0.7-0.8% as the new "worth a look" floor in most metros, and run the rental calculator on anything that clears that bar.