My experience is hauling RV's. There are some "ifs". If the company furnishes load insurance, loaded liability insurance, transport tags and operating authority, the current rates run 62 to 66 cents per loaded mile. Some will pay a fuel surcharge which can run up to 10 cents per loaded mile. They will usually will pay your tolls when you're loaded. I urge caution with insurance. Your regular auto insurance policy is normally null and void if you are hauling commercial.
MikeH