How to compare renting and buying
Renting and buying send your cash down two different paths. Buy, and you hand over a down payment and carry the costs of ownership while your equity moves. Rent, and you keep that cash free to invest while the rent keeps coming. The fair comparison asks where each path leaves you on the same future date.
Build both monthly budgets
On the buy side, count the mortgage, property taxes, insurance, maintenance, association fees, and any loan charges that apply. On the rent side, count rent, renter's insurance, and anything you pay separately. Add your closing and selling costs and how long you plan to stay. CFPB's ownership-cost guide makes a good checklist for the costs behind principal and interest.
Know which numbers are guesses
Appreciation, rent increases, and investment returns are scenarios you picked, not forecasts. The renting side only works out that way if you really do invest the monthly difference. Check how the tool handles taxes, mortgage insurance, loan changes, and any cost with no field here, since those can tip the comparison.
Test your holding period
There's no magic five- or seven-year mark where buying starts to win. Move the sale date, home appreciation, rent growth, repair allowance, and investment return one at a time, and watch which one flips the verdict. Then set the cash you'd need during ownership against what your budget can carry.
Ending wealth is only part of the answer. Flexibility, moving plans, control over the place you live, and the hours maintenance eats all count too. If the property will bring in rent, add that budget with the house-hack or rental calculator.
Whichever way it lands, you'll be deciding on numbers you chose and can defend.