
When buying a home, interest rates may not seem like the most exciting part of the process—but they play a huge role in determining how much house you can afford. Enter the 1% = 10% Rule, a simple but powerful way to understand how rising or falling mortgage rates can affect your purchasing power.
What Is the 1% = 10% Rule?
The 1% = 10% Rule highlights how a 1% change in mortgage interest rates can impact your buying power by as much as 10%. When rates go up by 1%, the amount of home you can afford decreases by about 10%. Conversely, when rates drop by 1%, your buying power increases by the same percentage.
This rule is a helpful way to visualize how interest rates directly impact your monthly payment and overall affordability.
How Does This Work in Real Numbers?
Let’s break it down with an example:
You’re approved for a $400,000 home at a 6% interest rate.
If interest rates rise to 7%, the same monthly budget might only qualify you for a $360,000 home—a 10% reduction in your purchasing power.
On the flip side, if rates drop to 5%, you may now qualify for a $440,000 home with the same monthly payment.
This is why even small shifts in interest rates can have a big impact on your ability to secure your dream home.
Why Does This Happen?
The 1% = 10% Rule works because mortgage payments are split between paying off the loan principal and covering the interest. Higher rates mean more of your monthly payment goes toward interest, leaving less room for principal. When rates drop, more of your payment goes toward the principal, allowing you to afford a larger loan amount.
How Can You Use This Rule to Your Advantage?
Stay Informed: Keep an eye on mortgage rate trends to understand when it might be a good time to lock in a lower rate.
Consider Pre-Approval: Getting pre-approved for a mortgage early in your home search can help you understand how current rates affect your budget.
Explore Rate Buydowns: Ask your lender about strategies like a temporary or permanent rate buydown to lower your interest rate.
Act Strategically: If rates are rising, consider accelerating your home purchase timeline to lock in a lower rate. If rates are falling, take your time to find the perfect home.
Real-World Implications
In today’s market, interest rates can fluctuate frequently, making it more important than ever to work with a knowledgeable real estate and mortgage team. At Chris + Lianet Manzano and Manzano Mortgage Co., we specialize in helping buyers navigate these changes so you can make informed decisions.
Final Thoughts
The 1% = 10% Rule reminds us that timing is everything in real estate. Understanding how interest rates affect your buying power allows you to adjust your strategy and make smarter decisions.
If you’re curious about how current rates could impact your homebuying journey, reach out to us today. We’re here to guide you every step of the way.
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