Companies can incur losses, but I don't think incur overhead works.
Interested in Language
Company A incurs less overhead than Company B.
Is the above sentence natural?
Company A has fewer overheads than Company B. (Use "fewer" if you're using a countable noun.)
Company A's overheads are lower than Company B's. (Here, "overheads" suggests the actual amount of money involved.)
Company A has lower overheads than Company B.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
I'd say "We have high overheads" and "Our overheads are high". How would you say these two sentences?