Cost per hour.
I have crunched some numbers on this awhile back. Dont know if I did it right but here is my figures.
buy up
maintenance
insurance
fuel usage
trade in/depreciation value
Keep in mind the longer you keep the tractor and more hours per year you use it, the less per hour your costs will be, so those who buy a 20,000 tractor to mow 10 acres, till the garden once or twice, and plow the driveway each winter will have a higher per hour cost then someone who mows more, tills more, and plows more driveways.
Here is my example.
Kubota
b7800 tractor with loader
buy up= 16,000
maintenance per year=300
Insurance per year=200
fuel per year (1/2 gal/hr@ $4.00/gal)=600
I put about 300 hours per year r on unit and plan on keeping it for 10 years. As for the trade in/depreciation I take the buy up cost and double it as to guesstimate trade in value towards buying a new replacement and add for inflation of future sale prices, so now buy up/trade in/depreciation cost is 32000 or 3200/year for 10 years.
Total approx cost per year to run tractor (add up all costs)=4300/year
Now divide by total hours per year (my case 300)=$14.33/hour
So for me to own and run my kubota
b7800 costs me about $14.33/hour.
Now the is other variables such as mentioned like saving money by not hiring out and saving on hassle. The list could go on and on. I have actually tried to figure all my variables in and came up with a per hour cost of $6.00/hour. That is a story for an no ther day.
Dont know if I did all that math right, but that is how I figure my operating costs.