Loan basics

Adjustable-rate mortgage (ARM)

Abbreviation: ARM

Definition

An adjustable-rate mortgage (ARM) has a fixed rate for an initial period — commonly 5, 7 or 10 years — after which the rate adjusts periodically based on an index plus a margin, within caps. A 7/6 ARM, for example, is fixed for seven years and then adjusts every six months.

Adjustable-rate mortgage (ARM), explained

Caps limit the first adjustment, each later adjustment and the lifetime rate.

See ARM in a calculator

The ARM vs. Fixed-Rate Mortgage Calculator shows how this works with real numbers. Compare an adjustable-rate mortgage against a fixed-rate loan over the full term.

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FAQ

ARM: quick questions

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Q.01What is ARM (Adjustable-rate mortgage)?
An adjustable-rate mortgage (ARM) has a fixed rate for an initial period — commonly 5, 7 or 10 years — after which the rate adjusts periodically based on an index plus a margin, within caps. A 7/6 ARM, for example, is fixed for seven years and then adjusts every six months.
Q.02When does an ARM make sense?
When you expect to sell or refinance before the fixed period ends and the ARM’s starting rate is meaningfully lower.

Explain it with their numbers

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