Fractional aircraft ownership is an arrangement in which multiple buyers each purchase a share of a private jet — as small as one-sixteenth under FAA rules — and in exchange receive a proportional block of flight hours each year on any aircraft in a shared fleet, managed by a single company.
In plain terms
It functions like a timeshare for a jet, but with a fleet-wide guarantee rather than a claim on one specific airplane. A program manager — NetJets, Flexjet, PlaneSense, and a handful of others run the major US programs — swaps aircraft between owners through what the rule calls a dry-lease exchange, so a 1/16 owner can fly a plane they do not individually hold title to, usually on short notice, while the manager handles crew, maintenance, and scheduling across every owner in the program.
How it works
The Federal Aviation Administration regulates this directly, under 14 CFR Part 91, Subpart K. A “fractional ownership program” is defined by a specific set of elements — a single program manager, two or more aircraft, a dry-lease exchange among owners, and multi-year program agreements — and the rule sets a floor on how small an individual share can be. Each owner’s annual flight hours are then capped in proportion to that ownership share. Selling or leasing a slice smaller than the regulatory floor is not permitted unless the flights are operated under the far heavier Part 121 or Part 135 rules by a certificated air carrier — which is the dividing line between a fractional program and an ordinary charter operator.
The numbers
- Minimum fractional ownership interest: 1/16 of at least one program aircraft for fixed-wing or powered-lift aircraft, or 1/32 for a rotorcraft — 14 CFR §91.1001(b)(10), in effect as of 2026.
- Flight-hours cap: an owner’s usage must not exceed the hours tied to their ownership share — 14 CFR §91.1005(b).
- Federal fuel surtax on fractional program aircraft: 14.1 cents per gallon, under 26 U.S.C. §4043(b), currently scheduled to expire September 30, 2028 absent renewal.
- Regulatory history: Subpart K was adopted in 2003 and most recently amended in December 2022.
What people get wrong
That a fractional owner pays the same 7.5% passenger excise tax a charter flight or airline ticket carries. They do not — and the reason is structural, not a loophole. Because a fractional owner already holds a share of the aircraft rather than buying a seat on someone else’s flight, there is no “fare” for the standard transportation excise tax to apply to, so Congress built a parallel tax instead: a flat per-gallon fuel surtax that applies specifically to fuel burned on fractional program aircraft. It is also the quiet reason the 1/16 ownership floor exists at all — regulators needed a bright line between real ownership, taxed and regulated lightly as fuel use under Part 91, and disguised charter, which gets pulled into the much stricter Part 135 rulebook the moment a share drops below that threshold.
Related
Read more: Flying Private: How the Wealthy Travel · Yachts: Ownership, Charter, and the Real Cost of Life at Sea
See also: Jet card · Part 91 vs Part 135 · Empty leg