Mortgage rates climbed this week as inflation pressures resurged, driven partly by spikes in global oil prices. Lenders responded by raising their loan offerings across the board.

For homebuyers and those considering a refinance, the movement matters immediately. Higher mortgage rates mean larger monthly payments on new loans. A borrower securing a $300,000 mortgage at 6.5 percent pays roughly $95 more per month than at 6 percent. Over 30 years, that difference compounds to nearly $34,000 in extra interest.

The root cause traces back to oil markets. When crude prices rise globally, inflation pressures build across energy costs and transportation expenses. The Federal Reserve watches these inflation signals closely. As price pressures mount, markets expect the Fed to hold interest rates steady longer, which pushes up mortgage rates as a ripple effect.

This timing creates a squeeze for homebuyers already facing tight inventory and high home prices in many markets. Lower rates typically spark more buying activity, as buyers can afford larger loans at the same monthly payment level. Rising rates dampen that demand.

Refinancers face a similar squeeze. Those who locked in sub-4 percent rates during the 2020-2021 period saw those deals make sense. At current levels above 6 percent, refinancing saves money only if you plan to stay in your home long enough to recoup closing costs. Most loan officers recommend waiting at least three to five years to break even.

Lenders adjust rates weekly based on their cost of funds and competitive positioning. Shopping across multiple lenders remains essential. Rates can vary 0.25 to 0.5 percent between institutions offering the same loan terms. A 0.5 percent difference on a $300,000 mortgage translates to roughly $57 monthly.

Prospective buyers should lock in rates when they find