Yes. Every extra dollar you pay toward principal lowers the balance that interest is calculated on, so the loan ends sooner and you pay less interest in total. What it does not do is lower your monthly payment. The payment stays the same and the finish line moves closer.
Why it works
Mortgage interest is charged on what you still owe. In the early years most of each payment is interest because the balance is at its largest. Pay the balance down ahead of schedule and next month's interest is figured on a smaller number, which sends more of your regular payment to principal. That effect compounds for the rest of the loan.
This is why extra payments do the most good early. A dollar of extra principal in year two removes decades of interest on that dollar. The same dollar in year 27 removes very little.
How much difference it makes
As a rule of thumb on a 30-year loan:
- One extra principal and interest payment a year typically takes roughly four to seven years off the loan. The higher your rate, the more time it removes.
- Rounding up each payment to the next hundred does less, but it is painless and it adds up.
- A one-time lump sum early in the loan, from a bonus or the sale of another asset, can do as much as years of small extras.
Ask your loan officer or servicer for an amortization schedule with your extra amount added. Seeing the payoff date move is the best motivation there is.
Do it correctly
Extra money sent the wrong way can sit in a holding account or be treated as an early regular payment.
- Mark it as principal. Online, use the field labeled additional principal. By check, write the loan number and the words apply to principal, and include the payment coupon with the box filled in.
- Be current first. Extra money is applied to past-due amounts and fees before principal.
- Check the next statement. The principal balance should have dropped by your regular principal plus the extra.
- Keep the proof. This matters most around a servicing transfer.
The biweekly question
Paying half your payment every two weeks produces 26 half payments a year, which equals 13 full payments in place of 12. The benefit comes from that extra payment, not from the timing.
You do not need a paid program to get it. Many servicers offer their own biweekly plan. If yours does not, add one twelfth of a payment to each monthly payment as extra principal and you reach the same place. Be careful with third-party companies that charge setup and transaction fees to do this for you, and confirm how any plan holds your money between drafts.
Check for a prepayment penalty
Most home loans made in recent years on a primary residence have no prepayment penalty, and federal rules sharply limit them on standard loans. Some investment property and non-QM loans do carry one for the first few years. Your note and Closing Disclosure state it plainly. Read them before you send a large lump sum.
It does not lower your payment, but two things can
- Recast. After a large principal reduction, many servicers will re-amortize the remaining balance over the remaining term for a modest fee. The rate and the payoff date stay the same and the payment drops. Not every loan type allows it. See Recast vs Refinance.
- Removing mortgage insurance. On a conventional loan, extra principal gets you to the point where mortgage insurance can come off sooner. That is a real monthly reduction. See What Is PMI and How Do I Remove It?.
Should the money go somewhere else first?
Paying down a mortgage is a guaranteed return equal to your interest rate. Whether that is your best move depends on what else is unfinished. A sensible order for most households:
- A cash reserve. Money in the house is hard to get back out. In a job loss the bank does not give credit for being ahead. Build several months of expenses first.
- High interest debt. A card balance almost always costs more than the mortgage.
- Employer retirement match. Unclaimed match is money left behind.
- Then the mortgage, weighed against other long-term saving.
The comparison with investing is personal. A homeowner with a low fixed rate gains less from paying it off early than one with a higher rate. Someone a few years from retirement may value a paid-off house more than a larger account balance. Neither answer is wrong. This is general information, not investment advice, and it is worth a conversation with a financial planner.
Reasons people choose to pay it down
- To own the home outright by retirement.
- To reach the point where mortgage insurance comes off.
- To build equity before a planned move or remodel.
- To sleep better. That counts.
Reasons to hold back
- You would drain your emergency fund to do it.
- You are carrying debt at a higher rate.
- You expect to sell soon, in which case liquidity may matter more than a slightly lower payoff.
- Your payment recently rose because of taxes or insurance and the budget is tight. Fix that first. See Why Did My Mortgage Payment Go Up?.
The 15-year alternative
If your goal is a faster payoff and the budget allows a higher required payment, a shorter loan usually comes with a lower rate. If you want the flexibility to pay extra in good months and the regular amount in lean ones, keep the longer term and prepay on your own schedule. See 15-Year vs 30-Year Mortgage.
A simple plan
- Pick an amount you will not miss.
- Automate it as additional principal with your regular payment.
- Raise it once a year when your income rises.
- Send half of any windfall to principal.
- Check the balance each January and update your target payoff date.
Why ask me
- I answer the question before I sell you anything. If renting, waiting or a different program is the better move, I will say so.
- Real numbers, not a calculator guess. I price your actual scenario, side by side, with the fees on the page.
- Every program under one roof. Conventional, FHA, VA, jumbo, and non-QM options like bank statement, DSCR and asset-based loans, so the program fits you instead of the other way around.
- You talk to the principal. Ricky Khamis is President of EPiQ Lending, NMLS #173141, lending in Arizona since 1999 and a 2025 Presidents Club Winner at CMG Home Loans. Direct line: (480) 999-9842.
EPiQ Lending is NMLS #1936984, at 7975 N. Hayden Road, Suite A-101 in Scottsdale. Verify all of it before you trust any of it: Ricky's EPiQ Lending profile, the Scottsdale branch, and the license itself at NMLS Consumer Access. Hold every lender to that standard, including us.
More plain-English answers in the Mortgage Education library.
Equal Housing Opportunity. This is general information, not a commitment to lend or an offer to extend credit. Program guidelines, eligibility requirements and documentation standards vary by investor and change over time. Rates, terms and program guidelines change and depend on credit approval, property appraisal and other qualifying factors. Not all applicants will qualify. This is not legal or tax advice; consult a qualified professional about your own situation.
Find out what your blended rate actually is
A refinance is shopped against the mortgage rate and decided by the blended rate across everything you owe. Tell me what is on the house and what you want gone, and I will run both.
Looking at a specific home? Send me the address and I will run the numbers: rickykhamis.com/analyze
