When this article first ran in 2014, the argument against paying off a mortgage early was easy: rates were so low that almost any sensible investment was expected to beat them. That premise is gone. Thirty-year mortgage rates have spent 2026 in the mid-6s, and at that level an extra payment on your mortgage is one of the best guaranteed returns available to a household. The decision has not become automatic, though. Whether you should prepay in 2026 depends on what rate you actually hold, what else your money could be doing, and how much liquidity you are willing to give up.

Prepaying is a guaranteed return equal to your rate

Every dollar of principal you pay ahead of schedule stops accruing interest at your note rate, permanently, with no market risk and no tax on the saving. If your mortgage is at 6.5%, prepaying it is the financial equivalent of a risk-free investment yielding 6.5%. Compare that with the safe alternatives in 2026: top high-yield savings accounts pay around 4%, and the best nationally available CDs 4.3% to 4.5%, both before tax. On $400,000, savings at 4% earns about $16,000 in a year, while the first year of a 6.5% mortgage on the same $400,000 costs roughly $25,900 in interest. Safe money does not come close.

Stocks are a different comparison. A diversified portfolio may out-earn a mid-6s mortgage over a long holding period, or it may not; nobody can promise a return, and the mortgage payment is still due in the years the market falls. Investing instead of prepaying at these rates is a bet on earning a spread, not the free lunch it looked like when mortgages were far cheaper.

What extra payments actually do

Take a $400,000 30-year loan at 6.5%. The required payment is $2,528.27 a month, and over the full term you would pay $510,177.95 in interest. Now add a fixed extra amount to every payment from month one:

  • Extra $100 a month: paid off in 322 months, about 26.8 years, saving roughly $63,900 in interest.
  • Extra $200 a month: paid off in 293 months, about 24.4 years, saving roughly $111,900.
  • Extra $500 a month: paid off in 233 months, about 19.4 years, saving roughly $205,600.

The lopsidedness is the point. Interest is charged on the outstanding balance, so a dollar of principal paid early avoids decades of interest on that dollar; the same $100 sent in year 25 barely registers. If you are going to prepay, the earlier the better. And if you are still choosing a term, a 15-year loan is the built-in version of the same trade.

Your rate might not be mid-6s

Many homeowners are still paying loans locked years ago at rates far below what a savings account pays today. If your mortgage rate is under the roughly 4% that top savings accounts and CDs offer in 2026, prepaying it earns you less than simply parking the money, and you give up liquidity for nothing. For those borrowers the 2014 logic still holds: keep the cheap loan, keep the cash.

The tax deduction is mostly gone as an argument

The old case for keeping a mortgage leaned on the interest deduction. For most households it no longer exists in practice. You must itemize to claim it, and the 2026 standard deduction is $16,100 for single filers and $32,200 for married couples filing jointly. Only about 9% of individual returns itemized in tax year 2023, per IRS data compiled by the Congressional Research Service. The deduction is also limited to interest on $750,000 of acquisition debt, a cap the 2025 tax law made permanent. Unless you are in the small group that itemizes, run the prepay decision assuming no tax benefit from the mortgage.

What to fund before you prepay

  • An emergency fund. Prepaid principal is locked in the house; you cannot un-send it if your income stops. Build a cash reserve in a high-yield account first. How much you really need depends on your situation, but it comes before optional extra payments.
  • Credit card and other high-rate debt. Cards carrying a balance averaged 22.15% in the second quarter of 2026. Paying those off is a guaranteed 22% return, more than three times what prepaying a mid-6s mortgage earns. The escape plan covers the order of attack.
  • Retirement accounts, at least up to any employer match. The 2026 limits are $24,500 for a 401(k) and $7,500 for an IRA. A match is an instant return no mortgage prepayment can touch.

Only after those are handled does the mortgage become the best home for spare dollars. At mid-6s rates, it is then a very good one.

How to prepay without tripping over the details

Tell the servicer where the money goes. Extra money must be applied to principal, not held as an early payment of next month’s bill. Servicers provide a way to designate this; use it and confirm on the next statement.

Check your note for a prepayment penalty. They are rare on standard fixed-rate mortgages today, and federal rules limit them tightly: a penalty is allowed only on certain fixed-rate loans, can apply for no more than three years after closing, and is capped at 2% of the balance in the first two years and 1% in the third. A lender that offers a loan with a penalty must also offer you a comparable loan without one. Still, read the note.

Consider a recast if you have a lump sum. Rather than paying a windfall into the loan and keeping the same required payment, you can ask the servicer to re-amortize: the balance drops, the rate and remaining term stay the same, and the required monthly payment is recalculated lower. Lenders typically charge a few hundred dollars, often $250 to $500, and usually require a minimum lump sum, commonly $10,000. FHA, VA and USDA loans generally cannot be recast. A recast lowers your required payment rather than just shortening the loan.

The debt-free argument still counts

None of this makes the emotional case irrelevant. A paid-off house means a housing cost of taxes and insurance only, an asset no lender can take for nonpayment, and a real reduction in the income you need in retirement. If you hold a much cheaper older loan, the math says keep it. If you hold a mid-6s loan and the basics are covered, the math and the peace of mind finally point the same way.