What CPI Actually Is — and Why It Moves Your Mortgage Rate

What CPI Actually Is — and Why It Moves Your Mortgage Rate

Douglas Wilkerson
Published on: 03/10/2026

The September CPI lands Oct 14 — and history says a 0.2% surprise can move your mortgage rate nearly half a point in a day. Here's what CPI actually is, how it becomes your rate, and what to do before the print.

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