What rate to propose?

I run a dedicated route loaded both ways as a company driver and am home daily. The company I run for drops my loaded trailer where I live and I take it the rest of the way and bring back the backhaul for them to pick up. I’m thinking of proposing to the owner of letting me get my own truck and they then would only have to drop the load 3 days a week instead of five because I would stay out two night a week. My question is what type of rate should I propose? My guess is I’m paid around 25% of load so I’m guessing he is making 2.00/mi all miles. I’m thinking of proposing 1.85/mile all miles. No fuel surcharge or any perks.

 

Ok I didn’t want to get into to much Detail until I had a reply because I sometimes get a lil long winded.

here are my estimated numbers and cost
107200 mi/yr @6 mpg @ 2.50/gal and this is at 1.75/mile all miles. In this example at 1.75/mi I would still net 66,000/ year after all expenses and taxes. Currently I’m paid by the hour 20.50/hr 10 hr a day so roughly I make $51,250 Gross. But can easily survive on $35000 net
weekly monthly yearly cpm
fuel 893 3573 44667 0.416
truck 213 852 10650 0.099
ins 200 800 10000 0.102
maint 375 1500 18760 .175
misc 100 400 5000 0.046
total 1781 7126 89077 0.83
taxes 650 2601 32513 .303
total cost 2444 9777 121590 1.13
pay 3752 15008 187600 1.75
gross b4 tax 1950 7802 97523 0.91
net 1320 5280 66010 0.61
salary 823 3292 41160 0.38
rev 497 1988 24850 0.23
miles 2144 8576 107200

 

I know those numbers are hard to follow without grid lines but my pay would be $187600 gross @1.75/mi
All costs and taxes $121590 =1.13 cpm
Net would be $66010=.61/mi
My salary would be $41160= .38/mi
Biz revenue would be $24850= .23/mi

 

Again my bosses current gross of $2.00/mi is a guess could be more?

 

Our company runs 10 trucks all dedicated hauling racks of glass In dry van for a large glass manufacturer and is shipped to window manufacturers. My route is one of the few that can’t be turned in one day so I’d why they bring the load 2 hours to me and I run it the rest of the way and back. Company has Had the contract for many years. My assumption on what my load makes the boss is a guess yes but knowing other freight rates and that if I was paid by mile which I’m not my pay would be around .57/mile. So me getting .57/mile I’d say he is at the least getting 2.00/mile and probably way more.