Rent vs Buy: How to Actually Decide

“Renting is throwing money away” is the most repeated — and most misleading — line in personal finance. Buying has its own money that vanishes: interest, taxes, insurance, maintenance, and the return you gave up by tying cash into a down payment. A fair rent-vs-buy comparison counts all of it on both sides, over a realistic holding period.

The costs each side actually has

Renting costs less than it looks:

• Rent (rising over time)
• Renter's insurance
• The opportunity cost of any deposit — small

Buying costs more than the mortgage:

• Mortgage interest (most of the early payment — see the amortization schedule)
• Property taxes and homeowner's insurance
• Maintenance and repairs (a common estimate is ~1% of value per year)
• Closing costs to buy, and agent commissions to sell
• The opportunity cost of the down payment — what that cash could have earned invested elsewhere

What buying gets back

Against those costs, ownership builds wealth two ways:

• Principal paydown — each payment converts debt into equity you keep when you sell.
• Appreciation — if the home's value rises, that gain is yours (and it's leveraged: you gain on the whole value, not just your down payment).

The right way to compare is net cost over your holding period: total cost of each path, minus what you walk away with at the end.

The two things that decide it

Almost every rent-vs-buy answer turns on these:

• How long you'll stay. Buying carries large one-time costs (closing in, commissions out). Spread over 2 years they dominate; spread over 10 they shrink to noise. Short horizons favor renting almost regardless of the market.
• The opportunity cost of your down payment. A $60,000 down payment isn't free — invested elsewhere it might have earned a return. Ignoring this is the single biggest way buy-side math cheats. If your down payment could earn 6–7% elsewhere, ownership has to clear a real bar to win.

A fair framework

Run it honestly and the answer is genuinely mixed — buying wins in some markets and horizons, renting in others. That's the point: rent vs buy is a math problem with real inputs, not a moral one with a foregone conclusion. The myth only survives by ignoring the costs on the buying side and the opportunity cost of the cash.