Landlord Calculator

Rent vs. Buy Calculator

Compare the real cost of renting against buying over the years you plan to hold - including the equity and appreciation you recover when you sell.

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Opens live in the Rental Flow app - no account needed.

What this calculator does

Buying isn't automatically cheaper than renting, and renting isn't automatically throwing money away. This calculator totals what you'd spend on each path over a holding period, then credits the buyer back the equity built from paying down the loan plus any appreciation - so you compare the true net cost, not just the sticker prices.

How it works

Net cost to buy = Down payment + Mortgage paid + Ownership costs − Equity recovered at sale

The renting side grows your rent each year by the increase you set. The buying side adds the down payment, every mortgage payment, and ongoing ownership costs (taxes, insurance, upkeep), then subtracts the home's appreciated value minus the remaining loan balance at the end of the period.

Worked example

$1,800/mo rent vs. a $300,000 home, held 7 years

Monthly rent (growing 3%/yr)$1,800
Purchase price$300,000
Down payment$60,000
Loan: 6.5%, 30 years$240,000
Monthly ownership costs$650
Appreciation3% / year
Total cost to rent (7 yrs)~$165,500
Net cost to buy (7 yrs)~$90,100
Buying saves~$75,400

The outcome flips with your assumptions: a shorter holding period, flat appreciation, or higher ownership costs can swing it back toward renting. Run your own numbers to see where your break-even lands.

Try it with your own numbers →