I often have a factory service center do my annual so I usually spend
around $5,000 for the annual. (give or take a grand). Mid year
maintenance is probably around $2,000 including about $400 for the
100hr ADs in year. The plane flys around 120 hrs/year. Insurance is
around $1,600 /yr. Shop rates vary between $70/hr and $100/hr.
Sometimes I will do a non-Mooney service center annual that usually
runs around $2500.
Property taxes are around $550 year (CA)
I burn about 10 gal/hr at between $3.00 and $4.00 per gallon. Tie down
is $720/yr

I figure my costs to be around $85/hr plus $240/month in fixed costs
(allocating the inspection part of the annual to fixed) plus insurance.
However, that includes engine/prop reserve but no avionics reserve.
-Robert M20F 1976