Start with the scheduled payment
This is the principal-and-interest amount needed to finish the loan on its current remaining schedule.
Existing mortgage planning
Mortgage Payoff Calculator
Choose when you would like the mortgage to end. The calculator works backward from that target to estimate the principal-and-interest payment needed, how much it adds to the current schedule, and how the remaining interest could change.
Payoff goal
Build a payment around your target date
Enter the mortgage you have today, then choose how many years you want to keep paying it.
Payment needed for the target
Compared with the scheduled payment on the remaining balance.
Required payment
$2,236.72
Monthly principal and interest
Additional each month
$340.52
Above the scheduled $1,896.20
Estimated payoff
Add a first payment month
10 years sooner
Estimated interest saved
$145,822
Compared with $382,633 on the current schedule
Current schedule versus new plan
Compare payoff time and remaining interest without changing taxes or insurance.
Current schedule
30 years to payoff
$382,633 interest
Target payoff plan
20 years to payoff
$236,812 interest
Planning estimate
This model assumes a fixed-rate, fully amortizing mortgage and that extra amounts are applied directly to principal. Confirm payment-crediting rules and any prepayment penalty with the loan servicer.
Read the result
The target payment is a plan, not a replacement loan
The calculator keeps the existing balance and rate, then shortens the time allowed to repay the debt. That makes it useful for testing a goal without pretending the mortgage contract has changed.
Keep the final payoff separate from the projection
The estimate can help you plan, but the servicer's dated payoff statement is the amount required to close the loan. It can include daily interest and other amounts not represented here.
Measure the monthly gap
The additional amount shows what the target asks of the household budget every month. A shorter target creates a larger gap.
Compare the interest
Interest is estimated from the declining balance. Paying principal sooner generally leaves a smaller balance on which future interest can be charged.
Before paying faster
A faster payoff should still leave the rest of the financial plan standing
Mortgage interest savings are valuable, but home equity is not the same as cash in a savings account. Test whether the extra payment remains comfortable when ordinary ownership costs and unexpected expenses arrive.
Protect the emergency reserve
Do not use a payoff target that leaves too little cash for repairs, insurance deductibles, job changes, or other near-term needs.
Compare other debt
Higher-rate debt may cost more than the mortgage. Review the rate, tax treatment, risk, and repayment flexibility rather than assuming the mortgage must always come first.
Confirm payment instructions
Ask how the servicer applies money above the required payment and whether a separate principal-only instruction is needed.
Check the loan documents
A prepayment penalty is not present on every mortgage, but the Note and any addendum are the right places to confirm whether one applies.
CFPB prepayment-penalty guidanceCalculation transparency
The target payment is solved from the balance and time available
The model calculates the payment required to amortize the current principal over the chosen shorter period, then compares that schedule with keeping the loan's remaining term.
- 1
Calculate the scheduled payment
The current balance, note rate, and months remaining establish the baseline principal-and-interest payment and interest cost.
- 2
Solve for the target period
The same balance and rate are amortized over the selected payoff period. The difference between the two payments is the additional monthly principal plan.
- 3
Compare interest month by month
Because the target payment reduces principal sooner, future interest is calculated from a smaller balance.
- 4
Separate projection from payoff quote
The model excludes daily interest, late charges, recording costs, and other amounts that may appear on a dated servicer payoff statement.
Worked example
Changing a 30-year remaining schedule to a 20-year goal
The example keeps the balance and rate unchanged so the effect of the shorter payoff period remains visible.
Assumptions
- Remaining balance
- $300,000
- Interest rate
- 6.50%
- Current time remaining
- 30 years
- Target payoff period
- 20 years
Estimated result
- Scheduled payment
- $1,896.20
- Target payment
- $2,236.72
- Additional each month
- $340.52
- Estimated interest saved
- $145,822
The target removes about ten years from the modeled schedule, but the additional payment should still leave room for reserves and higher-cost obligations.
Clear up the details
Common questions
Is my mortgage balance the same as the amount needed to pay off the loan?
Not necessarily. A formal payoff amount can include interest through the payoff date and unpaid fees, so it may differ from the principal balance shown on a statement. Ask the servicer for a dated payoff statement before sending a final payment.
Does this calculator change my required mortgage payment?
No. It estimates the principal-and-interest amount that would meet your chosen target. Your contractual payment remains the amount required by the loan unless the lender or servicer formally changes it.
Could paying a mortgage off early trigger a fee?
Some mortgages have a prepayment penalty, often limited to certain circumstances or early years of the loan. Review the Note and any addendum, and ask the servicer before making a large payoff payment.
What happens to taxes and insurance after the mortgage is paid off?
They do not disappear. If they were paid through escrow, the homeowner becomes responsible for paying property taxes and insurance directly after the loan and escrow account are closed.