1% Rule Check for Rental Property

The 1% rule

The 1% rule is a screening heuristic out of the US, popularised by communities like BiggerPockets. The idea is that monthly rent should come to at least 1% of the purchase price if a rental is going to throw off decent cash flow. monthly rent ≥ 0.01 × price. So a R$ 500,000 property should rent for R$ 5,000/month or more. In hot urban markets like prime São Paulo, Rio Zona Sul or Miami, the rule almost never holds anymore. Out in mid-size cities and suburban markets it still has some use. Brazilian residential rents tend to land between 0.4% and 0.6% of price, with commercial points reaching as high as 0.7%–0.8%. Think of it as a fast filter, not an investment thesis. It tells you nothing about costs, financing, vacancy or appreciation.

Applications

When you're sifting through dozens of buy-and-hold candidates, the 1% rule does its job as an early screen. Properties that flunk it rarely come out cash-flow positive under typical financing. For Brazil, a more realistic floor sits around 0.5%–0.7%. Pair it with the 50% rule (operating expenses ≈ 50% of rent) for a back-of-envelope cash-flow check before you sink time into detailed due diligence.

FAQ

Why does the rule fail in Brazil? Interest rates here, plus how expensive property is relative to rents, simply don't match the US picture. The working norm is a monthly ratio around 0.5%. Hold out for 1% and you'll rule out almost everything.

Does it replace serious analysis? No. It's a triage filter and nothing more. Always run cash-on-cash and total-return numbers before you commit.

What about appreciation-focused markets? Here the rule works against you, because it penalises anything bought for appreciation rather than cash flow. A prime São Paulo apartment can fail badly on the 1% test and still be exactly the right buy.