It sounds like you need to create your budget for the year. I went back over the last few years year end statement to get the expence totals. Then I figured the average change (mostly increase). I multiplied that change by last years number. Then I adjusted for expences that are no longer. I adjusted for expences that I plan to spend much more than the past. Added them up plus my income & co. proffit. I added 10% of my material cost to cover waist and unbilled. I had my number. Devided by 12 months, 52 weeks, then the week by 5 days. Now I know how much I need per year, month, and day.
I devided my day OH by 4,6, & 8. Now I use those numbers for bidding the job depending on the efficency I estimate.
For an example I will use $800 per day OH with 2 workers.
If it's a project we are there a number of days all day I will use my 8 hour number which works out to $50/hr each person.
A 6 hour job I will try to get $75 each/hr. With drive time and haveing to get the job done that day normally kills the day.
A 1/2 day job with no other work I need $100/hr each.
In the end I still need the $800 per day minimum.
I'm strugeling like many others to make a living so take it at your own risk.