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How much would extra payments actually save you?
Interest you would save
$42,393
Paid off in 22.2 years instead of 25 — 2.8 years sooner.
New payoff time
22.2 yrs
Time saved
2.8 yrs
Regular payment
$2,751/mo
Total interest, with extra payments
$282,820
Paying it off 2.8 years sooner saves $42,393 in interest, without changing what you'd pay if you stopped the extra payments.
Most lenders cap prepayments without penalty at 10-20% of the original balance per year — check yours before committing to an ongoing extra payment.
See every line
No extra payments
Payoff time25.0 years
Total interest paid$325,213
Total paid$825,213
With your extra payments
Payoff time22.2 years
Total interest paid$282,820
Total paid$782,820
The difference
Time saved2.8 years
Interest saved$42,393
What this assumed
Extra monthly payment$200
One-time lump sum, applied at the start$0
Rate held constant for the full amortizationReal mortgages renew every term — this assumes the same rate throughout
Last reviewed August 2026 · rates and rules from Sources & method
What this number means
Extra payments go straight to principal, which is why they shorten a mortgage disproportionately to their size — every dollar off the balance early stops compounding years of interest on itself. This runs the real month-by-month math, not an estimate.
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