Employment Related Driving: If your company reimbursed at $0.40/km, where do you claim the addition $0.14 (government allows $0.54)?

[whkh]

Why does it only give it as a percentage under "Employment-use portion"

[TurboTaxJennifer]

There is no set per/km rate for employment-related driving. 

If you have been reimbursed for your work-related driving and the reimbursement is included in your taxable income, you'll need to complete the vehicle section in the employment expenses section (including total km driven in the year, total km driven for work, and all expenses incurred during the year for gas, insurance, etc.) then enter the amount of the taxable reimbursement you received to determine if you're eligible for an additional deduction.