LD1....respectfully disagree with your figures....once again, too general. Where does that 18 grand figure come from? My Deere with a deck, back blade, and FEL cost me 20 grand back in 2002, and that amount DOES NOT include finance charges. And unless a tractor was horribly beat up and sadly neglected from new to the 6000 hour mark, it always WILL be worth something. Given the dollar amounts you note for service, it's a safe bet said tractor was decently maintained. One last thing...A DOLLAR AN HOUR FOR TUBES OF GREASE AND MISC PARTS? In 1215 hours my Deere has needed, aside from the service costs you mention...two new batteries, one set of mower deck blades, two sets of air and fuel filters, and two coolant flushes and refills, and one set of radiator hoses, 2 drive belts, and $50 worth of welding. plus 20 tubes of grease...about $500 for 1215 hours...a cost of 41 cents per hour.
I didnt say my numbers worked for every other tractor. Just MY tractor. The 18k is what the tractor cost me to purchase. And yes, while the tractor might still be worth something, it aint much. Look at what a 20 year old, 30HP tractor with 6k hours sells for. And trade in would be even less. So I imagine in another 10 years, when my tractor is 20 years old and 6k hours, my trade in value would be nil.
And while the $1 per hour may be a tad high, we are splitting hairs. But I have ~700hrs, and probably spent $500 for everything else I didnt mention. Replacing busted fuel cap, A few air filters and fuel filters, Bushhog blades, Several tire repairs (bushhogging is hard on them), and the ocasional other maintenance that isnt in the 100hr and 200hr. Like an ocassional coolant flush, plus factor my time doing the service. I think $1/hr is fair. But even using your numbers, when figuring cost, there aint much difference in how I bid a job if I factored $9.50/hr or $10/hr for tractor maintenance.
What about LIABILITY INSURANCE?
Thats just general business expence. I was limiting this to JUST the tractor. Sure, there are other costs, Truck/trailer maintenance, Insurance, Truck fuel, Tags/registration, and so on. Some of them overlap with other elements of business that I do. Like work with the Backhoe, and snowplowing. So those other costs associated with the truck, registrations, insurance, BWC, etc, dont fall 100% on the work I do with the kubota.
Thats why those out there advertising similar services for $20-$25/hr are either loosing money, or are not a legit business.
When it comes to figuring out other expenses like truck and insurance, it gets tricky too. IT cannot be tied to "hours". Cause weather I do 10hours of work, or 1000hrs in a given year, Insurance, truck/trailer tags and registration, BWC, etc are fixed costs. So the more work I can do, the less "per hour" those cost me. But there is no way of predicting how many hours of work I can do in a year.
And with truck maintenance, that cannot be tied to hours or tractor work either. Sometimes I do a 9-10hour job that is 10 minutes from home. Other times I do 1hr of work that is 1hr away from home.
All of that has to be accounted for, but cannot be just lumped in together to figure a "$/hr" amount for cost of doing business.