Calculated result
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Same rate, same remaining term
The lump sum reduces principal. The calculator recomputes principal and interest using the existing rate and remaining payment count; a recast does not inherently shorten the term.
Recast boundaries
Lender eligibility, minimum principal reduction, actual fees, escrow, and approval vary. Use Mortgage Payoff for accelerated payoff or Mortgage Refinance for a new rate or term.
Worked example
The editable example inputs above demonstrate the calculation and expose the assumptions used in every displayed result.
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This browser-local calculator provides an educational planning estimate, not financial, lending, tax, vehicle-valuation, brokerage, or investment advice.