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Adjustable Rate Mortgage (ARM): How It Works & Is It Right for You?

An adjustable rate mortgage (ARM) is a home loan with an interest rate that can change over time.

With FBKC Mortgage and your dedicated FBKC loan officer, you can explore whether an ARM may offer the flexibility and savings you’re looking for—especially in the early years of your loan.

What Is an Adjustable Rate Mortgage?

An adjustable rate mortgage (ARM) is a loan that starts with a fixed interest rate for an initial period, then adjusts periodically based on market conditions. The first number represents the fixed-rate period (in years), and the second number shows how often the rate adjusts after that 


Common ARM structures include:

  • 5/1 ARM
  • 7/1 ARM
  • 10/1 ARM

How Does an ARM Work?

An ARM has two main phases:

Fixed-Rate Period

  • Your interest rate stays the same
  • Your monthly payment is stable
  • Typically lasts 5, 7, or 10 years

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Adjustment Period

  • Your rate adjusts based on a market index
  • Payments may increase or decrease
  • Adjustments usually happen annually

 Benefits of an Adjustable Rate Mortgage

Lower initial interest rate

Lower starting monthly payment

Potential savings in the early years

Flexibility for shorter-term homeownership

Adjustable Rate Mortgage vs Fixed Rate Mortgage: What’s the Difference?

Adjustable Rate Mortgage (ARM)
  • Lower initial interest rate
  • Rate can change over time
  • Potential for lower early payments
Fixed Rate Mortgage
  • Stable interest rate
  • Predictable payments
  • No rate changes
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historical mortgage rates

When Does an ARM Make Sense?

An ARM may be a good fit if:

  • You plan to move or refinance within a few years
  • You want lower initial payments
  • You expect income to increase over time
  • You want to maximize short-term savings

Frequently Asked Questions About Adjustable Rate Mortgages

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