How much does your private flying cost you?

[Mark 1]

For an RV-4 hangared at a towered airport in the SF Bay area and 24 hour availability and about 100 hrs/year:

Hangarage (shared) - $4500 p.a.
Insurance - $1000 p.a.
Fuel - $4000 p.a.
Oil/consumables ~ $500

I've also upgraded the propeller, brakes, radio and ignition system and several other non-recurring costs, these are really capital costs, but maybe allow $1000 for ad-hoc stuff.

Annual inspection was free (thanks Harry)

So about $100 per tacho hour avarage.