About the Buy a House Now or Wait Calculator
Waiting to buy a home can pay off if mortgage rates fall — but while you wait, prices may rise, you keep paying rent, and you build no equity. This calculator puts both paths side by side over the same time horizon so you can see which leaves you better off, and how far rates would have to fall for waiting to break even.
Enter today’s price and rate, the rate you expect after waiting, how long you would wait, your rent and the expected house price growth. The tool counts every cash cost — down payment, mortgage payments, rent, and property tax, insurance and maintenance — offsets interest earned on your savings while waiting, and subtracts the equity you would hold at the end of the horizon.
Both scenarios buy the same home with the same down payment percentage and loan term. The comparison is in nominal dollars without discounting, and it ignores closing costs and refinancing — if rates drop after you buy, refinancing can capture part of the benefit of waiting, which makes buying now look better than shown here.
With the default inputs, the advantage of buying now (+) or waiting (−) is $7,295.58. Change any value above to recalculate instantly.
How to use the buy a house now or wait calculator
- 1Enter today’s home price, mortgage rate and your down payment percentage.
- 2Enter how many months you would wait and the rate you expect then.
- 3Add your current rent and the expected yearly home price growth.
- 4Set the ownership cost percentage and the comparison horizon.
- 5Check the advantage and the break-even rate to see which choice wins.
Formula and method
Buying now: you pay the down payment on today’s price, the monthly principal and interest at today’s rate for the whole horizon, and ownership costs (a percentage of the home’s growing value). At the end, your equity is the projected value minus the remaining loan balance. Net cost is cash spent minus that equity.
Waiting: you pay rent for the waiting months, earn interest on the down payment you already have, then buy at the grown price with the same down payment percentage and the expected future rate, paying mortgage and ownership costs for the rest of the horizon. The advantage of buying now is the waiting net cost minus the buying-now net cost. The break-even rate is found by bisection: the future rate at which both net costs are equal.
- Horizon
- Years from today over which both options are compared
- g
- Annual home price growth, applied monthly
- Equity
- Projected home value minus remaining mortgage balance at the horizon
Worked examples
Wait a year for rates to drop from 6.5% to 6%
Waiting a year means the $400,000 home costs $416,000 and you pay $26,400 of rent. The lower 6% rate cuts the payment from $2,022.62 to $1,995.30, but over 10 years buying now is about $7,296 cheaper. Rates would need to fall to about 5.76% to break even.
Wait two years for 5% with slow price growth
With only 2% price growth and a cheaper $1,800 rent, a fall to 5% makes waiting about $28,922 better over 10 years. Waiting breaks even as long as rates fall below roughly 6.09%.
Prices falling 3% a year, rates unchanged
If prices fall 3% a year, the home costs $388,000 after a year and you need $2,400 less down. Even at the same 6.5% rate, waiting saves about $17,862 over 10 years because you avoid a year of falling value.
Frequently asked questions
Should I wait for mortgage rates to drop before buying?+
Only if the saving from a lower rate outweighs the cost of waiting — likely higher prices, rent paid and equity not built. If prices rise faster than rates fall, buying now usually wins, and you may be able to refinance later if rates drop.
How much does a 1% lower rate save?+
On a $320,000 30-year loan, cutting the rate from 6.5% to 5.5% lowers principal and interest by roughly $200 a month. Whether that justifies waiting depends on how much the price rises and how much rent you pay meanwhile.
Can I buy now and refinance later?+
Yes. If rates fall meaningfully after you buy, refinancing can lower your payment, though it costs closing fees (often 2%–5% of the loan). This calculator does not include refinancing, so buying now may be even better than it shows if you plan to refinance.
What if house prices fall while I wait?+
Enter a negative growth rate. Falling prices reduce the price you pay later and the equity you would lose by buying now, which favors waiting. In past downturns, however, rates and prices have not always moved in predictable ways.
What is the break-even rate?+
It is the mortgage rate you would need to get after waiting for both options to cost the same over the horizon. If you think rates will fall below that level, waiting may pay; if not, buying now is likely the better choice.
Results are estimates for educational purposes and are not financial advice. Rates, fees and terms vary — confirm with your lender or a licensed advisor before making decisions.