Still Deciding to Rent or Buy?
The math is rarely as simple as "rent is throwing money away". Read Rent vs Buy: The Real Math Behind the Decision for a clear-eyed comparison.
Rent vs. buy — what are you actually comparing?
The rent vs. buy decision is not just about which monthly payment is lower. It is a full financial comparison between two fundamentally different ways of housing yourself. Renting is a pure expense — you pay for shelter and flexibility with no asset to show for it. Buying is an investment — you gain equity and appreciation potential, but you also take on debt, maintenance costs, and the risk of price declines. A good rent vs. buy calculator weighs all of these factors honestly.
How can this calculator help you decide?
This calculator computes the true all-in cost of both options over your expected time horizon. It factors in the down payment opportunity cost (what that money could earn if invested), home appreciation, property taxes, maintenance, insurance, closing costs, rent inflation, and the equity you build through principal paydown. The result is a break-even year — the point at which buying becomes cheaper than renting — and a cumulative cost comparison for every year of your stay.
What goes into each side of the calculation?
A thorough comparison must account for all costs on both sides — not just the obvious ones.
Cost of Renting
- •Monthly rent (100% unrecoverable)
- •Annual rent inflation (typically 3–5%)
- •Renters insurance premiums
- •No equity built — zero asset at end
Offset by:Investment returns on down payment capital that isn't tied up in real estate.
Cost of Buying
- •Mortgage interest (largest cost early on)
- •Property taxes (1–2% of value/year)
- •Maintenance & repairs (~1% of value/year)
- •Closing costs on purchase & eventual sale (7–10%)
- •PMI if down payment is under 20%
Offset by: Equity built through principal paydown plus home price appreciation over time.
How to use Finzony's rent vs. buy calculator
Fill in your numbers to get a personalised break-even analysis in seconds:
- Home price & down payment: Enter the price of the home you are considering and how much you plan to put down. This determines your loan amount and whether PMI applies.
- Mortgage rate & term: Use your pre-approved rate or current market averages. Try both 15 and 30 years to see the impact.
- Monthly rent: Enter the rent for a comparable property. This is your baseline alternative cost.
- Property tax & maintenance: Add your estimated annual property tax rate and a maintenance budget (1% of home value is the standard rule of thumb).
- Home appreciation & rent inflation: Set your expectations for how fast the home will grow in value and how fast rent will rise each year.
- Investment return: Set the annual return you could earn if you invested your down payment instead. The S&P 500 has averaged ~7% real returns historically.
- Read the break-even year: The calculator tells you exactly when buying overtakes renting in cumulative cost. If you plan to move before that point, renting is likely smarter.
5% Rule
Annual unrecoverable cost of ownership
4–6 yrs
Typical US market break-even period
7–10%
Historical S&P 500 annual return
2–5%
Typical closing costs on purchase
Why use Finzony's rent vs. buy calculator?
- True Total Cost Comparison: Most comparisons only look at rent vs mortgage payment. Ours includes taxes, maintenance, closing costs, and the investment opportunity cost of your down payment — giving you the complete economic picture.
- Break-Even Year Calculation: See exactly how many years you need to stay in the home before buying becomes cheaper than renting. This is the most critical number in the rent vs buy decision.
- Opportunity Cost of Down Payment: Your down payment isn't free — it has an opportunity cost. The calculator factors in what that money could earn invested in the market, so you compare apples to apples.
- Inflation & Appreciation Scenarios: Model different futures: high appreciation, flat prices, rising rent, or stable rent. See how sensitive the answer is to your assumptions before committing.
Common Rent vs. Buy Mistakes to Avoid
- 1. Comparing rent to just the mortgage paymentThe most common mistake — comparing your rent to only principal + interest. The real buying cost includes property tax, insurance, maintenance (~1%/year), and closing costs. Always compare rent to your full cost of ownership.
- 2. Ignoring the down payment's opportunity costMoney tied up in a down payment isn't earning market returns. If you'd otherwise invest that $60,000–$100,000 at 7%, that's real money you're giving up — factor it in or the comparison is misleading.
- 3. Assuming you'll stay long enough to break evenClosing costs on both purchase and sale (roughly 7–10% combined) mean buying rarely pays off if you move within 3–4 years. Be honest about how long you'll actually stay before assuming buying wins.
- 4. Overestimating home appreciationPlugging in an aggressive appreciation rate (6–8%) can make buying look better than it realistically will be. Historical long-run US home appreciation is closer to 3–4% — run the numbers with a conservative assumption too.
The Bottom Line
There's no universally correct answer to rent vs. buy — it depends entirely on how long you'll stay, your local market, and what else you'd do with the money. The break-even year this calculator gives you is the single most useful number: if you're confident you'll stay past it, buying usually wins financially. If there's a real chance you'll move sooner, renting keeps you flexible and avoids the transaction costs that make early moves expensive. Run your own numbers, then decide based on your actual time horizon — not just what feels emotionally right.