What is an Interest Rate?
An interest rate is the cost of borrowing money, expressed as a percentage of the loan amount charged annually. In real estate, interest rates directly determine monthly mortgage payments, affect property affordability, influence investment returns, and shape market conditions. Even small rate changes have outsized effects: a 1% increase on a $300,000 mortgage adds roughly $200/month to the payment.
Fixed vs adjustable rates
A fixed-rate mortgage locks the interest rate for the entire loan term (typically 15 or 30 years). Your payment never changes. An adjustable-rate mortgage (ARM) has an initial fixed period (commonly 5 or 7 years) followed by periodic adjustments based on a benchmark index plus a margin. ARMs start lower but carry the risk of payment increases.
How rates affect deal analysis
For flip investors, higher interest rates increase holding costs. A flipper holding a property for 6 months at 12% hard money interest on a $200,000 loan pays $12,000 in interest. At 15%, that is $15,000 — directly reducing profit and the maximum allowable offer.
For rental investors, rates determine whether a property cash flows. A rental that produces positive cash flow at a 6% mortgage rate might be cash-flow negative at 8%.
Rate environment and wholesaling
Higher rates reduce the number of financed buyers, making cash buyers more valuable. They also compress property values. For wholesalers, rising rates mean focusing on cash buyer relationships and adjusting pricing. Falling rates expand the buyer pool and increase what buyers can pay.
Mortgage rates tend to track the 10-year Treasury yield plus a spread of 1.5-2.5%. The Federal Reserve's actions influence short-term rates directly and long-term rates indirectly through market expectations.