Early Payoff
Calculator
Show clients what an extra $200 a month really does to their mortgage
Extra monthly payments and one-time lump sums: months cut from the loan, total interest saved, and the new payoff date, computed with exact amortization math.
See It In Action
Play with the calculator below. This is exactly what your visitors will see.
Early Payoff Calculator
See how extra payments shorten your mortgage and how much interest they save
Interest Saved
$91,175
Payoff Timeline
New Payoff Time
278.36
Months Saved
81.64
New Monthly Payment
$1,999
Interest Comparison
Interest (Regular Schedule)
$347,515
Interest (With Extra)
$256,340
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How It Works
Get your results in four simple steps
Enter the scenario
Fill in 5 plain-English inputs across 2 short sections. Sensible defaults get you a result immediately.
Read the verdict
Results update instantly: the headline figure, supporting stats, and clear pass/fail states where qualification applies.
Share or download
Send a live share link or download a branded PDF scenario report to keep the conversation going.
Why This Calculator
Purpose-built features that give you the insights you actually need.
Current Loan
Your existing mortgage
Extra Payments
What you plan to add
How the Early Payoff math works
See how extra payments shorten your mortgage and how much interest they save
Industry Standards We Follow
- Closed-form payoff time from the amortization equation
- Interest saved compares full schedules, not approximations
Key Variables in Our Calculation
- monthlyRateMonthly rate
- baseTermMonthsRemaining term in months
- basePaymentRegular monthly P&I
- effectiveBalanceBalance after the lump sum (floored at $1 to keep the math defined)
- totalPaymentNew monthly payment including the extra
- payoffMonthsMonths to payoff with extra payments
- monthsSavedHow many months earlier the loan is paid off
- baseTotalInterestInterest paid on the regular schedule
Expert Insights
Get the most out of your calculations with these professional tips
Start from the defaults
Defaults reflect current market conditions; change only what you know about your scenario.
Stress-test the result
Nudge the most uncertain input both directions to see how sturdy the conclusion is.
Put it on your site
Embed this mortgage calculator with your branding and capture the leads it generates.
Frequently Asked Questions
Everything you need to know about the Early Payoff Calculator
On a typical 30-year loan, roughly the equivalent of paying the loan off 4-5 years early, saving tens of thousands in interest. Enter your exact numbers to see your figure.
Earlier money saves more interest, so a lump sum today beats the same amount spread over the year. The calculator models both together.
Who Uses This Calculator
Homeowners
See whether extra payments beat investing the difference.
Loan Officers & Advisors
A retention tool for annual mortgage checkups.
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