Mortgage Payoff Calculator

How much sooner could you be mortgage-free? Enter your current loan, add an extra monthly amount or a one-time lump sum, and watch your payoff date move closer — along with the interest you will never pay.

Quick answer — Paying $200/mo extra on a $320,000 loan at 6.5% clears the loan about 6 years early and saves roughly $109,000 of interest.
1 · Afford2 · Payment3 · Schedule4 · Pay off early5 · Closing costs6 · PMI7 · Refinance8 · Rates guide
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The real cost of paying only the minimum

On a $320,000 balance at 6.5% with a payment of $2,023 a month, you need the full 30 years and pay about $408,143 in interest — more than the house loan itself. Now add just $200 a month to principal: the loan ends in about 23 years 11 months and total interest falls to roughly $298,991. That is $109,152 saved and 73 months of payments eliminated — from an extra amount many households can find by trimming two subscriptions and a weekly takeout.

Four proven ways to pay off a mortgage early

  1. Round up every payment. Pay $2,100 instead of $2,023. Painless, automatic, effective.
  2. One extra payment a year. A 13th payment annually (or its monthly equivalent, 1/12 extra each month) cuts about 4–6 years off a 30-year loan.
  3. Biweekly half-payments. 26 half-payments equal 13 full ones — see the biweekly calculator.
  4. Throw windfalls at principal. Tax refunds, bonuses and raises applied as lump sums — use the lump-sum fields above to model them.

Before you pay extra, check these three things

Tell your servicer in writing to apply extra amounts to principal, and confirm on your next statement. For the month-by-month picture, open the amortization calculator, and read our strategy guide on how to pay off your mortgage early.

Your next steps

See it monthly

Full amortization schedule

Watch exactly how each extra dollar changes your balance curve.

Alternative

Or refinance instead?

A shorter term at a lower rate can beat extra payments — compare both.

Learn

Early payoff strategies

Biweekly, recasts, windfalls and the mistakes to avoid.

Related calculators

Mortgage Payment Calculator

Your true monthly payment with taxes, insurance & PMI.

Amortization Calculator

Every payment, principal vs interest, to payoff day.

Home Affordability Calculator

How much house your income can really carry.

Refinance Calculator

Break-even and lifetime savings, honestly totaled.

Frequently asked questions

How much can I save by paying my mortgage off early?
It depends on your balance, rate and how early you start. On a $320,000 loan at 6.5%, adding $200 a month saves about $109,000 in interest and clears the loan roughly 6 years early. Use the fields above with your own numbers — the earlier you start, the bigger the effect.
Is it better to pay extra monthly or one lump sum?
Mathematically, money applied earlier wins, so a lump sum today beats the same total spread over future months. Practically, monthly extras are easier to sustain. Many people do both: a steady monthly extra plus windfalls as lump sums.
Should I pay off my mortgage or invest instead?
Compare your mortgage rate with expected after-tax investment returns, and weigh the guaranteed, risk-free 'return' of interest saved against market risk. Many households split the difference. If your rate is above roughly 6–7%, extra principal is hard to beat for certainty; below 4%, investing often wins on paper. This is a personal decision — a financial advisor can model your situation.
Does paying extra lower my monthly payment?
No — on a fixed-rate loan the required payment stays the same; extra principal shortens the term instead. If you need a lower payment, ask your lender about a recast (re-amortizing after a large lump sum, usually for a small fee) or look at refinancing.
Will my lender let me pay off early?
Almost all modern US residential mortgages allow unlimited extra principal payments with no penalty. Check your loan note for a prepayment-penalty clause, and confirm extra funds are applied to principal, not held for future payments.

Sources & further reading

Official sources for program rules and consumer rights. Zorvex is not affiliated with these agencies; figures here are estimates for education.