A home can cost less to own over five years in one sale-price scenario and more in another. The calendar alone cannot settle the comparison. Use the same exit date for renting and buying, then follow the cash: what leaves the household, what reduces the loan, and what comes back when the home is sold.
Freddie Mac’s rent-or-buy guide suggests considering a stay of at least five to seven years, alongside finances and lifestyle. Treat that as a prompt to do the comparison. A calendar cannot tell you what your particular home will cost to leave.
Separate a payment from a cost
A mortgage payment moves money in different directions. Interest pays for borrowing; principal reduces the debt. Property taxes, insurance and repairs do not reduce that debt. A down payment starts as equity, but the cash becomes tied to the property and exposed to changes in its value.
The CFPB’s Closing Disclosure explainer distinguishes principal and interest from the estimated total monthly payment, and closing costs from cash to close. It also shows how taxes and insurance may be bundled through escrow. These distinctions prevent two common mistakes: comparing rent with only the loan payment, and treating every dollar brought to closing as a permanent expense.
Use the loan documents to separate fees, prepaid costs, escrow deposits and the down payment. An escrow deposit is money set aside for later bills. If your estimate also includes those bills, counting the deposit as an additional permanent cost would overstate the total.
Build one comparison with an explicit exit
Here is an original, simplified five-year example in US dollars. It is an illustration, not a market quote or forecast:
- Purchase price: $300,000; down payment: $60,000.
- Loan: $240,000, fixed at 6% for 30 years, with monthly payments.
- Purchase transaction costs: $9,000, assumed to exclude refundable deposits and double-counted prepayments.
- Taxes, insurance and maintenance combined: $700 per month.
- Sale costs: 5% of the sale price.
- Comparable rent: $1,800 per month initially, rising 3% at each annual renewal.
The comparison assumes sale immediately after the sixtieth loan payment. It excludes tax effects, investment returns, mortgage insurance, association fees, moving expenses and differences in utilities. An actual comparison must add any of those that apply. The rounded outputs below use the unrounded monthly payment internally.
Follow the loan balance
For this assumed fully amortizing loan, the monthly principal-and-interest payment is about $1,439. After 60 payments, the outstanding balance is about $223,330. Roughly $16,670 of principal has been repaid, while about $69,666 of interest has been paid.
You can reproduce those figures with the monthly rate of 0.005, the initial loan amount and the 360-payment term. Ask a lender or a mortgage calculator for the amortization schedule, then use the balance at the intended exit date. Do not estimate equity by multiplying the entire monthly loan payment by the number of months.
The buyer’s cash paid before sale is approximately $197,335: the $60,000 down payment, $9,000 of transaction costs, about $86,335 of loan payments and $42,000 of the assumed taxes, insurance and maintenance. That is the cash leaving the household, before considering what comes back when the home is sold.
Subtract the money recovered at sale
If the home sells for the original $300,000, the assumed selling costs are $15,000. Paying off the roughly $223,330 loan leaves about $61,670 for the owner. Subtracting that recovery from the $197,335 paid gives a simplified net housing cost of about $135,666.
There is a second way to check the result: add the $69,666 of interest, $42,000 of ongoing costs, $9,000 of purchase costs and $15,000 of sale costs. The result is the same because the down payment and principal repayment were recovered in this unchanged-price scenario.
The renter’s five annual rent totals add to about $114,677. Under these assumptions, renting costs about $20,989 less over five years, before the excluded items. This result belongs to this example; it does not tell you whether renting is cheaper in your city.
Change the assumption that does the most work
Now change only the sale price. If it rises by an assumed 3% a year, the home sells for approximately $347,782. After the same 5% sale-cost assumption and the loan payoff, the owner receives about $107,063. The simplified net cost falls to about $90,273.
If the price instead falls by an assumed 3% annually, the sale price is approximately $257,620, the owner receives about $21,409, and the net cost rises to about $175,927. The loan schedule is unchanged in both scenarios; the sale price changes what can be recovered.
Neither path is a prediction. They show how a conclusion can depend heavily on an uncertain input. Write the required sale price beside any claim that buying “wins,” then ask whether you could still afford to move if that price did not materialize.
Compare cash reserves as well as totals
The lowest estimated total cost does not necessarily produce the most manageable cash flow. In this example, the owner’s recurring payment is about $2,139 before omitted costs. The down payment and purchase costs also require $69,000 up front. An emergency repair would require further cash.
For the renter, the cash that was not used for the purchase can remain available or earn a return, but the comparison should model what actually happens to it. Assuming a guaranteed investment return would simply replace one uncertain forecast with another. Include a separate scenario for savings or investments, along with relevant fees and taxes, rather than hiding that assumption inside the housing total.
Freddie Mac’s guide also describes the flexibility of renting and the control and maintenance responsibilities of owning. Those considerations deserve their own line in your decision. A home that suits a settled household may be awkward for someone expecting a relocation.
Ask what happens if the stay is shorter
Run the same cash-paid-minus-cash-recovered calculation at two, three and five years. Update the loan balance, ongoing costs, rent and possible sale price for each exit. Keep local selling quotes and the actual lease terms visible; neither selling nor ending a tenancy is automatically free.
A useful decision note contains three things: the intended stay, the less favorable scenario you can afford, and the cost of changing your plans. That gives the five-year rule a practical role: it reminds you to test the exit before you commit to the entrance.
