Rent vs buy in 2026: a framework for any market
Why the standard appreciation assumption is dangerous, how to model opportunity cost correctly, and what the break-even timeline looks like with mortgage costs included.
Open Rent vs Buy CalculatorWhat This Guide Covers
This page turns the topic into a decision process: what to measure, which assumptions matter, where the answer can flip, and which calculator to use for your own numbers.
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16 min
Read time
Jul 2026
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Decision Framework
Step 1
Model the full monthly carrying cost, not just principal and interest. Property tax, insurance, PMI, HOA dues, maintenance, and closing costs can change the answer.
Step 2
Compare the decision over the actual holding period. Buying can look attractive over ten years and unattractive over three years.
Step 3
Keep liquidity visible. A payment can be technically approved by a lender and still leave too little cash margin for repairs, job changes, or moving costs.
Key Takeaways
- Define the decision this guide is solving before comparing options: Why the standard appreciation assumption is dangerous, how to model opportunity cost correctly, and what the break-even timeline looks like with mortgage costs included.
- Use your own numbers instead of rules of thumb. Defaults are useful for orientation, but the answer usually changes with income, time horizon, tax rate, debt cost, or location.
- Save a calculator scenario after reading so the assumptions are visible when you come back later.
Before You Decide
- Write down the current baseline.
- Run the conservative case.
- Change one assumption at a time.
- Record the point where the answer changes.
- Include closing costs, maintenance, property tax, insurance, PMI, and sale costs.