For an adjustable-rate mortgage, you may cancel,
i. Based solely on the amortization schedule then in effect for that mortgage, and irrespective of the outstanding balance for that mortgage on that date, is first scheduled to reach 80 percent of the original value of the property securing the loan; or
ii. Based solely on actual payments, first reaches 80 percent of the original value of the property securing the loan.
If you choose option i. the amortization schedule is recalculated every time the rate adjusts.
Section 4903(a)(1)(B) of the HPA states that will notify the mortgagor when the cancellation date is reached.