Rent vs Buy in 2026: The Honest Math

Rent buys you housing — it's no more 'thrown away' than money spent on groceries. What the cliche misses is that ownership has unrecoverable costs too: mortgage interest, property tax, maintenance, homeowner's insurance, closing costs on the way in, and selling costs on the way out. None of that builds equity either.

Only the principal portion of a mortgage payment becomes wealth, and in the early years of a 30-year loan most of the payment is interest. So the real question is never 'rent or own' in the abstract — it's which path leaves you with more net worth over your specific horizon, with every sunk cost on both sides priced in.

The most commonly ignored cost of buying is what the down payment could have earned instead. Under Lodestar's rent-vs-buy calculator defaults — a $400,000 home with 20% down and 3% closing costs — the buyer sinks roughly $92,000 up front. A renter keeps that sum invested, and at the calculator's default 7% return it roughly doubles in a decade.

That's why comparing a rent check to a mortgage payment and stopping there is the classic mistake. The honest comparison gives the renter the buyer's upfront cash — down payment plus closing costs — as an investment portfolio and has it absorb the monthly difference between the two housing bills — money in when owning costs more that month, money out when renting does.

Transaction costs are the reason time horizon matters more than any other input. Buying costs about 3% up front and selling about 6% of the sale price (the calculator's defaults) — sunk immediately and at exit. Spread over three years, those costs are brutal; spread over twenty, they fade to a rounding error per year.

Under the calculator's default assumptions ($400,000 home, $2,200 rent, 6.5% mortgage, 3.5% appreciation, 7% investment return), renting is still ahead by roughly $14,000 after eight years, and the buyer doesn't catch up until around year 12. Stretch the same assumptions to thirty years and buying finishes well over $100,000 ahead. Same house, same rates — the horizon flips the answer.

Those figures are illustrations of the defaults, not predictions: your rent, price, rate, and market change them. That's the point of running your own numbers.

The breakeven year is the first year the buyer's net worth catches up to the renter's. Buying starts behind by design — closing costs are sunk on day one and selling costs would come out of any sale — and typically catches up as the mortgage amortizes and the home appreciates.

Breakeven is not a finish line, though. Under some assumptions the lead can flip back — for example if investment returns outpace home appreciation by enough — so read the full year-by-year picture at the horizon you realistically expect, not just the crossover point. And if you'd likely move before breakeven, renting probably leaves you wealthier.

The mortgage-interest deduction gets invoked constantly in this debate, but since the 2017 tax law roughly doubled the standard deduction, most homeowners no longer itemize — which makes the deduction worth exactly $0 to them. That's why Lodestar's calculator ignores it on purpose.

If you carry a large mortgage and do itemize, buying looks somewhat better than the raw math shows. Home sales also have their own tax treatment, including possible exclusions on gains. Tax situations vary a lot — confirm the specifics with a CPA before letting them drive the decision.

Buying tends to win with a long horizon in a stable location: transaction costs amortize away, a fixed-rate payment stays flat while rents step up each year, and amortization forces saving whether you feel disciplined or not. If you can see yourself in the same place for a decade and the payment leaves room for your other goals, the math usually cooperates.

Renting tends to win when the horizon is short or uncertain — a likely move, a career in flux — or in markets where rent is far below the full monthly cost of owning the same home. One honest caveat: the renter only comes out ahead if the difference actually gets invested. Rent-and-invest-the-difference beats buying in plenty of scenarios; rent-and-spend-the-difference rarely does.

Lodestar's free rent-vs-buy calculator simulates both paths month by month: the buyer's equity net of selling costs against a renter's portfolio that starts with the buyer's upfront cash (down payment plus closing costs) and absorbs the monthly difference. You get the year-by-year net worth of each path, the breakeven year, and the verdict at your horizon — deterministic math, no sign-up, nothing stored.