US leveraged lease: Used by foreign airlines importing aircraft from the United States. In a US lease, a Foreign Sales Corporation (FSC) purchases and leases the aircraft, and is tax-exempt so long as at least 50% of the aircraft is made in the US, and at least 50% of its flight miles are flown outside the US. Because of the extensive documentation required for these leases, they have only been used for very expensive aircraft being operated entirely outside the US, such as Boeing 747spurchased for domestic routes within Japan.
Aircraft brokers make it their goal to become trusted advisors to the buyer. A professional Aircraft Broker will not only present the most current and desirable available aircraft on the market; they will also guide the buyer throughout the entire transaction, including price negotiations, as well as recommendations for legal and tax advisors, aircraft inspection specialists, suitable FBO facilities, and any other services to assist in consummating the best possible deal for the aircraft purchase.
In the United States, business aircraft may be operated under either FAR 91 as private operations for the business purposes of the owner, or under FAR 135 as commercial operations for the business purposes of a third party. One common arrangement for operational flexibility purposes is for the aircraft's owner to operate the aircraft under FAR 91 when needed for its own purposes, and to allow a third-party charter-manager to operate it under FAR 135 when the aircraft is needed for the business purposes of third parties (such as for other entities within the corporate group of the aircraft's owner).
The most economical option is chartering, which doesn't require any cash upfront (other than a deposit) through companies like Tradewind, Sentient, and Solairus, (which we took home from North Carolina). Of course, there are the old standbys like NetJets and Marquis, who sell fractional ownership (like 1/16th) of a single jet for upwards of $100K. One step down from that, pricewise, is the jet card, where you buy a set amount of hours from a company like Nicholas or Private Jet Services, and can use those hours for different planes. Then there are membership models like WheelsUp, where you pay $17,500 as an initiation fee to fly in their fleet, and then a $8,500 annual dues fee starting the second year. It's like a country club—only you're guaranteed access to a KingAir350i or Citation Excel / XLS instead of a golf course.
Though the early Lockheed Jetstar had four, most production business jets have two jet engines, mostly rear-mounted podded engine. If mounted below their low wing, it wouldn't allow sufficient engine clearance without a too long landing gear. The HondaJet is the exception with its over the wing engine pods. Dassault Falcon still builds three-engine models derived from the Falcon 50, and the very light jet market has seen several single-engine design concepts and the introduction of the Cirrus Vision SF50 in 2016.