If I have a T2200 showing a home office requirement and any travel between offices are work related (90% of my total use) then shouldn't I have a low vehicle TB?

My company provides me with a new vehicle and the deductions seem high even though I'm providing them an annual detailed method showing very low personal use of the vehicle.

Self-employed

Depending on whats on your T2200 and your T4, this might be possible. 

 

Here are a couple of great tips for you!

What Expenses Can You Deduct as an Employee? and  Tips for Claiming Job-Related Expenses