Rent vs Buy Calculator
Formula and Calculation Method
Net Wealth from Buying vs Renting over N years:
Net Buying Wealth = Future Home Value - Remaining Mortgage - Selling Costs + Equity Gained - Unrecoverable Costs (Tax, Ins, Maintenance, Interest)Net Renting Wealth = Future Value of (Down Payment + Monthly Savings) Invested at Market Return - Cumulative Rent Paid
Worked Example and Step-by-Step Calculation
- Home Price: $420,000 (15% down = $63,000)
- Mortgage Rate: 6.54% (30-year fixed)
- Annual Home Appreciation: 3.5%
- Annual Maintenance: 1.0% ($4,200/yr)
- Monthly Rent: $2,200 (increasing 3.0%/yr)
- Investment Return: 7.5% annual stock return
1. In Years 1–3, renting wins due to upfront closing costs ($12,600) and heavy front-loaded mortgage interest.
2. Around Year 5, home equity accumulation and property appreciation overtake cumulative rent expenditures.
3. By Year 10, Buying generates a net wealth of $194,500 compared to Renting & Investing net wealth of $168,200.
4. Break-Even Point: Occurs at Year 4.8.
How to Use the Rent vs Buy Calculator
- Enter the target home purchase price and your expected down payment.
- Input the monthly rent for a comparable property in the same neighborhood.
- Set your anticipated duration of stay in the home.
- Adjust home appreciation, maintenance rate, and alternative investment returns.
- Inspect the break-even year and the net wealth projection graph over time.
Common Mistakes, Limitations & Practical Guidance
- Homeownership involves non-financial lifestyle factors including geographical flexibility, career mobility, and personal autonomy.
- Local property taxes, HOA fees, and unexpected capital repairs (roof, HVAC) can significantly shift the break-even timeline.
Frequently Asked Questions About Rent vs Buy Calculator
How do you calculate the rent vs buy break-even year?
The break-even year occurs when cumulative home equity and property appreciation surpass the total costs of buying, selling, mortgage interest, property taxes, and the opportunity cost of investing the down payment in index funds.
What is the break-even year in a rent vs buy calculation?
The break-even year is the exact point in time when the cumulative financial benefits of homeownership (equity accumulation and home price appreciation) equal and begin to exceed the costs of renting and investing your down payment in the market.
Is renting really "throwing money away"?
No. Renting buys shelter, lifestyle flexibility, and freedom from repair liabilities. In the first several years of a mortgage, over 70% of mortgage payments go to unrecoverable interest, property taxes, insurance, and maintenance, which are also "unrecoverable costs."
What is the 5% rule of thumb for renting vs buying?
The 5% rule estimates the annual unrecoverable cost of homeownership as 5% of the property value (1% property tax + 1% maintenance + 3% cost of capital/interest). If equivalent annual rent is less than 5% of the purchase price, renting is often financially advantageous.
How long do I need to live in a house for buying to make sense?
Due to round-trip transaction costs (closing fees when buying, 5-6% realtor commissions when selling), buying rarely makes financial sense unless you plan to remain in the property for at least 4 to 7 years.
How does this tool connect to the Mortgage Calculator?
Our Mortgage Calculator computes your exact monthly PITI payment for a specific property, which you can use as an input here to evaluate against local rental rates.