Adjustment interval

On an ARM, the time between changes in the interest rate or monthly payment. The rate adjustment interval is often displayed in x/y format, where "x" is the period until the first adjustment, and "y" is the adjustment period thereafter. For example, a 5/1 ARM is one on which the initial rate holds for 5 years, after which it is adjusted every year. The rate adjustment interval and the payment adjustment interval are the same on a fully amortizing ARM, but may not be on a negative amortization ARM.

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