https://www.stlouisfed.org/on-the-economy/2023/jun/marginal-vs-average-mortgageā¦ Created Thu, 01/06/2023 - 19:30 Updated Thu, 01/06/2023 - 19:30 Mortgage rates have risen sharply, but the impact on the typical borrower can be better gauged if one considers the average rate rather than the current rate.