Should I pay off my mortgage early?
Neither answer is wrong — it is a trade between return and risk. Extra principal payments earn you a guaranteed return equal to your mortgage rate (tax-free for the roughly nine in ten taxpayers who take the standard deduction; itemizers net a little less, since prepaying also shrinks their interest deduction); investing the same money has historically returned more over long horizons, but with real risk and no guarantee. The honest decision factors are your rate versus what you would realistically earn elsewhere, how much you value liquidity and peace of mind, and how close you are to living on fixed income. One argument you can usually ignore: "you'll lose the tax deduction" — roughly nine in ten taxpayers take the standard deduction and get no tax benefit from mortgage interest at all.
Last reviewed 2026-08-24
| Key number | Value | Source |
|---|---|---|
| Taxpayers taking the standard deduction (no mortgage-interest benefit) | roughly 9 in 10 | IRS Statistics of Income |
What an extra principal payment actually earns
Every dollar of extra principal stops accruing interest at your note rate — a guaranteed, risk-free return of exactly that rate before any tax effects (tax-free in practice for standard-deduction filers; itemizers net slightly less because the avoided interest was partly deductible). On a 6.5% mortgage that is a strong guaranteed return; on a 2.75% pandemic-era loan it is a weak one that many savings accounts have beaten. That single comparison — your rate versus what the same dollar could realistically earn elsewhere — is the core of the whole debate, and it points in different directions for different vintages of loan.
The case for investing instead — and its honest caveat
Long-horizon diversified investing has historically outpaced low mortgage rates, which is why the standard advice for young borrowers with cheap loans is to invest the difference. The caveat the spreadsheet hides: those returns arrive with drawdowns, and the strategy only works if you actually invest the money consistently instead of spending it. A guaranteed 3% beats a hypothetical 9% that never gets invested. Discipline is a real input to this decision, not a footnote.
Life stage changes the answer
A borrower decades from retirement has time to ride out market cycles, so the opportunity cost of prepaying a low-rate loan is high. A borrower approaching fixed income has the opposite profile: eliminating the required payment de-risks their retirement budget in a way no portfolio allocation can, and a paid-off home is the cheapest place they will ever live. Many planners split the difference — invest through the accumulation years, then aim the final working years at entering retirement free and clear.
The tax-deduction argument is mostly a myth
Since the standard deduction was roughly doubled in 2018, only a small minority of taxpayers itemize — IRS statistics put standard-deduction filers at roughly nine in ten. If you take the standard deduction, your mortgage interest saves you exactly zero dollars in tax, so "keeping the deduction" is not a reason to keep the loan. Even for itemizers, the deduction only refunds a fraction of the interest paid; nobody profits by paying a dollar of interest to save a fraction of it.
Liquidity: the one-way door to watch
Money paid into principal is hard to get back out — retrieving it means selling, refinancing, or opening a home-equity line, each with costs and approval requirements. Before accelerating payoff, fund your emergency reserves first; home equity is wealth, but it is not spendable in a bad month. A middle path many borrowers miss: make the lump-sum payment and ask your servicer about a recast, which lowers the required payment while keeping your rate and payoff progress. Recast vs refinance
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