Accelerate

Extra payment payoff

Compare recurring, annual, and one-time prepayments, interest saved, and a target payoff date. Change any assumption and the full plan recalculates instantly.

Private browser workspace

Payoff accelerator

No sign-up. Your assumptions stay in this browser unless you choose to share a link.

Property and loan
Payoff strategy

The one-time amount is applied at payment 12. Check your contract for prepayment privileges, timing rules, and penalties before acting.

CAD planning estimate
Regular payment before extra$2,950.77per monthly period
Interest saved$101,682
Time saved6.0 years
New payoff time19.0 years
Extra per year$5,400
One-time at payment 12$10,000

Regular versus accelerated payoff

Compare the projected balance with and without the selected extra payments.

The selected prepayments save about $101,682 and shorten payoff by 6.0 years.

View chart values as a table
PeriodRegular planWith prepayments
Year 1$508,811$493,358
Year 2$497,084$475,436
Year 3$484,793$456,652
Year 4$471,911$436,966
Year 5$458,410$416,333
Year 6$444,261$394,709
Year 7$429,431$372,045
Year 8$413,889$348,292
Year 9$397,599$323,397
Year 10$380,527$297,306
Year 11$362,634$269,960
Year 12$343,881$241,301
Year 13$324,226$211,263
Year 14$303,627$179,782
Year 15$282,038$146,788
Year 16$259,412$112,209
Year 17$235,697$75,967
Year 18$210,843$37,983
Year 19$184,795$0
Year 20$157,494$0
Year 21$128,881$0
Year 22$98,893$0
Year 23$67,463$0
Year 24$34,523$0
Year 25$0$0

Planning estimate only. Lenders use their own qualification, compounding, rounding, insurance, fee, tax, and contract rules.

Calculator guide

Model recurring, annual, and one-time extra payments

Extra principal reduces the balance on which later interest is calculated. This calculator compares the regular schedule with extra money on every payment, a recurring annual lump sum, and one separate lump sum at a chosen payment number.

The mathematical saving does not override the mortgage contract. Confirm the permitted amount, eligible dates, and penalty rules before sending a prepayment.

01

Enter a useful scenario

  1. Enter the normal mortgage assumptions and payment frequency.
  2. Add an amount to every payment if you plan a recurring increase.
  3. Add an annual lump sum for a payment that repeats each year.
  4. Use the one-time field and payment number for a single future principal reduction.
02

Compare interest and payoff time

Interest saved compares the accelerated schedule with the same mortgage and no extra principal. The new payoff time reflects all three prepayment types.

Earlier prepayments generally have more time to reduce interest, but using cash can reduce liquidity. Compare the saving with emergency needs and higher-interest debt.

Questions answered

Frequently asked questions

Can I calculate one extra mortgage payment?

Yes. Enter it as a one-time lump sum and choose the payment number when it will be applied.

Are extra mortgage payments penalty-free?

Only within the prepayment privileges and timing rules in your contract. Amounts above the allowed limit may trigger a penalty.

Does accelerated biweekly mean the same as biweekly?

No. Accelerated biweekly commonly uses half the monthly payment every two weeks, producing the equivalent of one extra monthly payment each year.

Official references

Rules and tax programs can change. Confirm the current requirements before acting.

Use the estimate well

What this calculator can and cannot tell you

It can model transparent assumptions, compare scenarios, and expose tradeoffs. It cannot approve a loan, quote a lender, predict markets, interpret your contract, or replace licensed advice.

A

Try a range

Run the base case, a higher rate, a lower home value, and a cash-buffer case.

B

Check the contract

Confirm compounding, prepayment, fees, insurance, dates, and lender rounding.

C

Keep liquidity

A feasible payment is not the same as a resilient household budget.

Related field notes

Understand the decision behind the number