Mortgage vs Rent: A Real Comparison
8 min read
Beyond the 'renting is throwing money away' cliché — a clear-eyed look at when buying wins, and when renting does.
The rent-vs-buy decision isn't moral, it's mathematical. The right answer depends on time horizon, opportunity cost, and the specific market you live in.
A useful rule of thumb is the price-to-rent ratio. Above 21, renting tends to win on a pure cash basis. Below 15, buying usually pulls ahead within five to seven years.
But math isn't everything. Buying locks in housing costs and builds equity; renting preserves flexibility and capital. Both are legitimate strategies for different life stages.
Run both scenarios in a calculator with realistic assumptions — including maintenance, property tax, and the return your down payment would have earned invested. The truth is usually closer than the loudest voices on either side claim.
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Written and reviewed by
Keiron Brown, Psy.D.
Founder & Lead Educator, CalculatingWealth
Keiron Brown, Psy.D., is a clinical psychologist and the founder of Relationale LLC, which publishes CalculatingWealth. His doctorate is in psychology, not finance: he is not a registered investment adviser, accountant, or attorney, and nothing here is financial, investment, tax, or legal advice. His work here focuses on financial education, critical thinking, and decision-making — helping people understand the math behind money so they can plan with clarity and confidence. He writes about wealth building, retirement planning, investing literacy, budgeting, and the behavioral patterns that shape long-term financial outcomes.
Editorial standards: All educational content on CalculatingWealth is reviewed for accuracy, sourced from primary references where applicable (IRS, SSA, Federal Reserve, BLS), and updated when rules or rates change. Content is for educational and informational purposes only and does not constitute financial, investment, tax, or legal advice.
Not advice: Keiron Brown is not a registered investment adviser, broker-dealer, certified public accountant, enrolled agent, attorney, or licensed insurance producer. His work is educational in nature. See our full disclaimer.