Interesting thread that at least from my aircraft ownership perspective, mostly misses the big point (except MIFlyer above!). The reason I setup a Delaware S-Corp for owning my aircraft was simply to escape sales tax in my home state. This was about 20 years ago, and I sold the plane in 2000, but many more states are getting in on the "registration" mess of aircraft with the apparent sole purpose being to snag the sales tax on the deal....which at maybe 7%, can be a $5600 hit on an $80,000 aircraft. If you're domiciled in a state that's going to hit you for sales tax, you're being financially reckless to NOT setup a corporation in a tax-free state. At the time I did this, the registered agent fee was something like $60 per year, and included in that fee they would forward all "real" mail (AD notices, etc.) I think my whole cost per year in DE some 20 years ago was right around $100. Had I added a boat, second plane, condo, etc. none of those fixed costs would rise. If there's a liability shield that happens to fall out of a properly structured adventure, then all the better, but I never made that my primary concern.