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Decision Center

Fixed-Rate vs Adjustable-Rate Mortgage

Rate certainty vs a lower introductory payment.

A fixed-rate mortgage keeps the same rate for the full term. An ARM starts lower for an intro period (commonly 5, 7 or 10 years) and then adjusts against an index, within caps disclosed under Regulation Z.

Option A

Fixed-Rate Mortgage

Same principal and interest payment for 15 or 30 years.

Pros

  • Payment never changes
  • Simple to budget
  • No rate risk

Cons

  • Higher starting rate
  • Must refinance to benefit from rate drops

Best for

Long-term ownersTight budgetsRising-rate environments

Typical user: Buyer staying put past the break-even horizon.

Open Fixed-Rate Mortgage
Option B

Adjustable-Rate Mortgage

Discounted intro rate, then periodic adjustments subject to caps.

Pros

  • Lower initial payment
  • More buying power short term
  • Caps limit worst case

Cons

  • Payment can rise sharply
  • Harder to plan
  • Refinance is not guaranteed

Best for

Short expected tenureExpecting income growthFalling-rate outlook

Typical user: Owner who plans to sell or refinance inside the fixed period.

Open Adjustable-Rate Mortgage

The verdict

Staying longer than the intro period? Take the fixed rate. Confident you will move or refinance before the first adjustment? The ARM saves real money.

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