Mortgage rates can change quickly, affecting how much home you can afford. While you can’t control the market, you can use smart strategies to protect your buying power and make confident decisions.

How a 1% rate change impacts your buying power

One of the most important concepts for homebuyers is the 1% Rule: every 1% increase in mortgage rates reduces your purchasing power by about 10%.

For example, a buyer comfortable with a $2,400 monthly principal and interest payment could qualify for a $400,000 loan at 6%, but only about $360,000 at 7%. With a 20% down payment, that lowers the home-shopping budget from $500,000 to $450,000. At 8%, buying power drops even further.

Understanding this relationship helps buyers make informed decisions instead of reacting to headlines. Mortgage calculators can show exactly how different interest rates affect your budget before you begin shopping.

How rate locks protect your buying power while you shop

A rate lock guarantees your interest rate for a specific period while you’re shopping for a home and completing the purchase.

Locking your rate means your budget won’t shrink if rates rise before closing, allowing you to focus on finding the right home instead of worrying about market swings.

When discussing a rate lock, ask your lender about:

  • Available lock periods
  • Costs or extension fees
  • Float-down options if rates decrease
  • How the lock works from application through closing

A rate lock provides confidence by protecting your purchasing power during an unpredictable market.

Should you buy now or wait for rates to drop?

A helpful guideline is “Date the Rate, Marry the House.” The idea is to buy a home you can comfortably afford today and refinance later if rates decline.

When it works

This strategy works when:

  • The monthly payment fits comfortably within your budget.
  • You expect to stay in the home at least five years.
  • The home meets your long-term needs regardless of future rate changes.

If rates fall later, refinancing can reduce your payment, but your purchase should never depend on that possibility.

When to be cautious

Be careful if:

  • You’re stretching beyond your budget.
  • You’re relying on refinancing to make payments affordable.
  • You expect to own the home only a short time.
  • Your income is uncertain.

If the payment only works because you expect rates to fall, you’re taking a significant financial risk.

What happens if rates drop after I lock?

Some lenders offer float-down options, allowing borrowers to receive a lower rate if market rates fall enough before closing. Terms and fees vary, so ask your loan officer what options are available.

Is it better to wait for rates to drop?

No one knows when rates will change. Waiting could mean losing the right home or facing more competition if rates decline. A better strategy is to buy a home you can comfortably afford today and refinance later if it makes financial sense.

Buy with confidence, not anxiety

Interest rate volatility is a reality, but it doesn’t have to stop your homeownership plans. By understanding the 1% Rule, using rate locks when appropriate, and focusing on a home you can comfortably afford today, you’ll be better prepared to navigate today’s market with confidence.

First Horizon Bank is a leading regional financial services company, dedicated to helping our clients, communities, and associates unlock their full potential with capital and counsel. It’s the powerful tools you need with the personal service you deserve. Contact First Horizon for all your banking needs.

Follow KnoxTNToday on Facebook,   Instagram, X, and LinkedIn. Get all KnoxTNToday articles in one place with our free newsletter. Comments may be sent to news@knoxtntoday.com.