The IRS announces the reimbursement rate for miles driven in December. The rate can fluctuate up or down. You can set your own, or revert back to the default IRS Rate.

After logging in, navigate in the sidebar:

Company Settings > Expenses > Expense Policy > Default Policy

Note: If you have created custom Expense Policies, they can have their own rates, and you can set these rates separately from the Default Policy.

Choose "Edit" to the right of "General Rules":

Choose "Custom" and you can use your own Mileage Reimbursement Rate. Click "Save" to set the changes.

If you set mileage reimbursement outside the default policy the rate will only affect the employees you assign to that custom-built policy.