If you've ever debated whether to keep renting or buy a home, you've probably looked for the New York Times rent vs buy calculator. That tool became popular because it compares the full financial picture, not just a monthly mortgage payment. The calculator below follows that same spirit: estimate long-term net worth for renting vs buying using real-world costs like taxes, maintenance, appreciation, rent growth, and investing differences.
Rent vs Buy Calculator
Enter your assumptions and click Calculate. Results show which option is projected to build more wealth over your selected timeframe.
This is an educational model, not tax, legal, or investment advice. Results are sensitive to your assumptions.
What this calculator is trying to answer
The real question is not simply “Is a mortgage payment lower than rent?” Instead, it is: “After accounting for all major costs and investment alternatives, which choice leaves me with more net worth?”
Buying comes with principal paydown and potential appreciation. Renting can be cheaper month-to-month and lets you invest the money you didn't tie up in down payment and ownership costs. This calculator simulates both paths over time and compares projected outcomes.
How this rent vs buy model works
For buying, it includes:
- Mortgage payment (principal + interest)
- Property taxes
- Insurance
- HOA dues
- Maintenance as a percentage of home value
- Purchase closing costs and selling costs
- Home appreciation and remaining loan balance to estimate equity
For renting, it includes:
- Monthly rent with annual growth
- Investment growth on money not spent on buying (such as down payment and closing costs)
- Monthly investing (or withdrawing) of the cash-flow difference between owning and renting
Inputs that matter most
1) Time horizon
This is often the most important variable. Buying tends to be less favorable over short timelines because transaction costs are front-loaded. If you expect to move in 2-4 years, renting frequently wins.
2) Mortgage rate and down payment
Higher rates increase interest costs and reduce affordability. A larger down payment lowers borrowing costs, but it also increases opportunity cost because that capital could have been invested elsewhere.
3) Appreciation vs investment return
If home prices grow slowly but stock-market-like returns are strong, renting and investing may outperform. If local property values rise steadily and you stay long enough, buying can dominate.
4) Ongoing ownership costs
Property taxes, insurance, HOA fees, and maintenance make a major difference. Many “quick” comparisons ignore these costs and overstate the financial benefit of homeownership.
Common mistakes when using a rent vs buy calculator
- Being overly optimistic about appreciation.
- Ignoring maintenance (roofs, HVAC, appliances, repairs are real).
- Forgetting selling costs, which can be substantial.
- Using an unrealistic time horizon that doesn't match your life plans.
- Treating the output as certainty instead of scenario analysis.
When renting is often the smarter move
- You may relocate soon for career or family reasons.
- You want flexibility and low maintenance responsibility.
- Your local market has high prices relative to rent.
- You can consistently invest savings with discipline.
When buying often wins
- You plan to stay put for many years.
- You are buying within your means and can handle repairs.
- Your market has stable long-term demand and moderate supply.
- You value payment stability (fixed-rate mortgage) and control of your space.
Final perspective
The best decision is both financial and personal. Use the calculator to understand trade-offs, then pair it with your priorities: stability, flexibility, commute, schools, family goals, and lifestyle. If your numbers are close, the “right” answer may come down to non-financial factors.
Run multiple scenarios—base case, conservative case, and optimistic case. A good decision is one that still looks reasonable when assumptions change.