The 5 Percent Rule: A Simple Way to Decide Whether to Rent or Buy

The rent-vs-buy debate gets muddied by emotion on both sides. Renters get told they're "throwing money away." Buyers get told the market is about to crash. Neither framing is useful when you're trying to make a major financial decision.

The 5 percent rule cuts through the noise. It doesn't predict the future or tell you what you want to hear — it gives you a clean mathematical benchmark to compare the true cost of owning against the true cost of renting, using a property's current value. If you can rent a comparable home for less than the 5 percent rule threshold, renting is likely the financially superior choice at that moment. If local rents exceed the threshold, buying probably makes more sense.

Here's how it works.

What the 5 Percent Rule Actually Measures

The 5 percent rule was popularized by financial planner Ben Felix as a shorthand for calculating the "unrecoverable costs" of homeownership — expenses that you pay regardless of whether the property appreciates, and that you cannot get back when you eventually sell.

These unrecoverable costs fall into three categories:

Property taxes: Approximately 1% of the property's value annually in most jurisdictions (though this varies significantly — Texas runs 1.5–2.5%, while some Canadian provinces run lower).

Maintenance and repairs: Approximately 1% of the property's value annually. This is an average; older properties and larger homes often require more. The figure covers routine maintenance, appliance replacements, HVAC servicing, and unexpected repairs.

Cost of capital: Approximately 3% annually. This represents the interest cost on the mortgage (even if you pay cash, it's the opportunity cost of not having that capital invested elsewhere). In practice, as of 2026, mortgage rates in most English-speaking markets sit in the 5%–7% range, but a blended figure accounting for the equity portion of the purchase (where you are effectively your own lender at the risk-free rate) produces a long-run estimate around 3%.

Add these together: 1% + 1% + 3% = 5% of the home's value annually.

How to Calculate Your Break-Even Rent

The calculation is straightforward:

1. Take the purchase price of the home you're considering.
2. Multiply by 5%.
3. Divide by 12.

The result is the monthly break-even rent for that property.

Example: A home priced at $500,000.

$500,000 × 5% = $25,000 per year $25,000 ÷ 12 = $2,083 per month

If you can rent a comparable home in the same area for less than $2,083 per month, renting is the cheaper option on a pure cost basis. If comparable rentals cost more than $2,083, buying is the more efficient use of money.

Let's run the same calculation across a few typical price points:

In high-cost markets — the Greater Toronto Area, Sydney, London, San Francisco, or Auckland — median home prices frequently sit above $800,000. The 5 percent rule monthly threshold for an $800,000 property is $3,333. If you can rent a comparable property for less, renting is mathematically efficient while you save.

What the Rule Does Not Capture

The 5 percent rule is a useful starting point, not a complete model. Several factors can shift the outcome:

Appreciation: The rule excludes home price growth. If your target market appreciates 5–7% annually and you're confident in that trajectory, the case for buying strengthens considerably — you're not just avoiding unrecoverable costs, you're building equity faster than the costs accumulate. However, relying on appreciation projections introduces forecast risk that the rule deliberately sidesteps.

Rent inflation: Rent prices tend to rise over time. A fixed-rate mortgage locks in your largest monthly housing cost for 25–30 years, while a renter faces compounding rent increases. Over a 10–20 year period, this factor often favors buyers, even when the 5 percent rule initially favors renting.

Transaction costs and the breakeven horizon: Buying and selling a home is expensive — typically 2–5% at purchase (closing costs) and 3–6% at sale (agent commissions and transfer taxes). These sunk costs mean that even if buying is financially better on a monthly basis, you need to stay long enough for the accumulated savings to exceed the transaction cost burden. In 2026, the national average break-even horizon in the United States is approximately 5 years and 8 months. Buying a home when you'll likely move in 3–4 years is rarely financially optimal, regardless of what the 5 percent rule says.

Leverage: When you buy, you're investing with leverage. If a $500,000 home appreciates 5%, you gain $25,000 in equity on a $25,000 down payment (5% down) — a 100% return on invested capital. A renter investing the same $25,000 in an index fund at a 7% annual return earns $1,750. Leverage dramatically amplifies the returns from appreciation — and amplifies losses if prices fall.

The Rule in Different Markets

The 5 percent rule produces different signals depending on where you are.

United States: In affordable Midwest cities (Indianapolis, Columbus, St. Louis, Kansas City), home prices are low enough that the monthly break-even rent often falls below actual local rents, making buying the clear financial winner. In high-cost coastal metros (New York, Los Angeles, San Francisco, Seattle), the 5 percent rule break-even rent often exceeds what comparable rentals cost, suggesting renting while saving aggressively is the smarter near-term strategy.

Canada: In Vancouver and Toronto, the 5 percent rule almost universally favors renting over buying at current valuations. Median home prices in these cities sit well above $1 million, with break-even monthly rents exceeding $4,200 — higher than comparable rentals in many neighborhoods. In secondary cities like Halifax, Regina, or Winnipeg, the math frequently swings toward buying.

United Kingdom: In London, average property values of around £472,000 produce a 5 percent break-even rent of roughly £1,967 per month. Given that comparable London rentals often run significantly higher, the rule suggests buying — but the deposit barrier (average first-time buyer deposit in London exceeded £124,000) means many buyers are stuck renting while saving, regardless of what the formula says.

Australia: In Sydney and Melbourne, median house prices above $1 million push break-even rents beyond $4,000 per month. In many suburbs, actual rental costs fall below this figure, making renting financially efficient in the short term while buyers save toward a 5–20% deposit.

Using the Rule While You're Still Saving

For buyers who are mid-savings — accumulating a deposit while paying rent — the 5 percent rule serves a dual purpose.

First, it tells you whether to maintain your current rental or consider moving to a cheaper one to accelerate savings. If your current rent is significantly below the 5 percent rule threshold for properties you'd want to buy, you're in an efficient position: renting cheaply while saving aggressively.

Second, it helps you set a rational purchase timeline. If your target property at $450,000 has a break-even rent of $1,875 per month and comparable rentals in your area cost $2,300 per month, that $425 monthly gap is money that effectively flows toward equity the moment you buy. If your current rent is $1,600, you're not in a rush — continue saving and only buy when your deposit is fully funded with closing costs and a post-purchase emergency buffer.

The worst version of this decision is rushing to buy because of social pressure or fear of missing the market, then entering homeownership without sufficient reserves. The 5 percent rule is a tool to help you stay rational during what is often a highly emotional decision.

What to Do Once You've Run the Numbers

If the 5 percent rule says renting makes sense right now, your job is to build your deposit in the most efficient, capital-preserving way possible — high-yield savings accounts, Treasury bills (US), GIC ladders (Canada), or the relevant government-backed scheme in your market (LISA in the UK, FHSS in Australia, FHSA in Canada).

If the 5 percent rule says buying makes sense and you have the deposit, the next question shifts to whether you've fully funded your closing costs (typically 2–5% of the purchase price in addition to the down payment) and whether you have a post-purchase emergency reserve. Buying without those reserves is how buyers end up house-poor in the first year.

For a structured plan covering savings targets, account selection, and timeline milestones based on your specific situation, the Down Payment Savings Plan & Strategy Guide walks through the full framework with worksheets and calculators you can use immediately.