Mileage rates used by Mileage Tracker in Quicken H&B
The Mileage rates are stored in a datafile. If you can't wait for Quicken to issue a software update with the latest numbers and if you know the numbers for the new year you can edit the file Milerate.txt using Notepad (while Quicken is closed)
The actual location of the Milerate.txt file varies by Quicken version.
Older versions: C:\ProgramData\Intuit\Quicken\Inet\Common\Localweb\Biz.
Current version: C:\ProgramData\Quicken\Inet\Common\Localweb\Biz.