Aircraft Partnership Cost Breakdown: 2-, 3- and 4-Way Splits

This page is for pilots who want the actual numbers before joining or forming a partnership. It shows what each owner pays per year and per flight hour in a two-, three- and four-way split of three example airplanes, alongside a sole owner flying the same hours. Every assumption is stated so you can swap in your own.

What assumptions are behind these numbers?

These are illustrative budgets, not quotes. Insurance, hangar rent and shop rates vary a lot by region and pilot, so treat each line as a placeholder for your own figure. The inputs that change with the market come from dated sources.

• Fuel: 100LL at $7.24 per gallon, the national average in the AirNav fuel report dated September 27, 2026. Regional averages ranged from $6.76 (Central) to $7.88 (New England).
• Financing: 15% down, the AOPA Aviation Finance minimum for post-1960 singles, and a fixed 8.00% rate over 20 years. AOPA lists 20-year terms for single-engine loans of $75,000 and above. As of September 2026, quoted piston rates run from about 7% (FLYING Finance lists certified piston from 7.01%) to roughly 10%.
• Insurance: the Archer figure sits inside BWI's 2026 range of $1,200–$2,500 a year for a privately owned Cessna 172 with an $80,000–$150,000 hull, which we use as a proxy for a similar fixed-gear four-seater. The SR22 figure is inside BWI's 2026 range of $3,500–$7,500 for an experienced, transition-trained private pilot. The A36 figure is our assumption. We hold the premium constant as partners are added. In practice, naming more pilots, especially low-time ones, can raise it, so get a quote with every partner named.
• Hours: every partner, and the sole owner, flies 50 hours a year. The airplane therefore flies 50, 100, 150 or 200 hours as partners are added.
• Loan split: each partner carries an equal share of one group loan. The lender will usually hold every partner liable for the whole loan, not just their share. See financing a co-owned aircraft.
• Left out: sales tax, depreciation or appreciation, the return you give up on the down payment, one-time setup costs, and major surprises such as a prop strike or corrosion repair.

The engine reserve is an assumed overhaul cost divided by the engine's time between overhauls. Get a current overhaul or exchange quote for your engine model and recalculate it. For a line-by-line look at each cost category, see the operating cost breakdown, hangar vs tiedown costs and annual inspection costs.

How do partners split fixed and variable costs?

Almost every partnership uses the same basic formula, and it drives every table on this page:

1. Fixed costs (insurance, hangar, annual inspection, databases, registration) are divided by ownership share, usually equally. You pay them whether or not you fly.
2. Loan payments are divided by ownership share if the group borrowed together. Part of each payment is principal, which builds equity rather than being spent.
3. Variable costs (fuel, oil, and engine, propeller and maintenance reserves) are charged per hour to whoever flies. Many groups bill a single "dry" hourly rate for the reserves and have each pilot buy their own fuel. Others bill a "wet" rate that includes fuel.

Adding a partner divides the first two lines further, but it doesn't change the third. That is why the savings are largest on expensive, lightly flown airplanes, where fixed costs and financing dominate the budget.

Class A: a $90,000 Piper Archer

Example: Piper PA-28-181 Archer: four seats, fixed gear, 180 hp Lycoming O-360. Fixed costs are $10,100 a year and variable costs are $119.40 per hour. The group loan is $76,500 at $640 per month.

Going from sole ownership to a three-way split cuts this owner's yearly cash outlay from $23,749 to $11,896, and the down payment from $13,500 to $4,500. Moving from three partners to four saves another $1,482 a year each, which is a smaller step than the first split, while the airplane's schedule tightens from 150 to 200 hours a year.

Class B: a $200,000 A36 Bonanza-class single

Example: Older Beechcraft A36 Bonanza: six seats, retractable gear, Continental IO-520 or IO-550 depending on year. Fixed costs are $13,300 a year and variable costs are $186.60 per hour. The group loan is $170,000 at $1,422 per month.

Going from sole ownership to a three-way split cuts this owner's yearly cash outlay from $39,693 to $19,451, and the down payment from $30,000 to $10,000. Moving from three partners to four saves another $2,530 a year each, which is a smaller step than the first split, while the airplane's schedule tightens from 150 to 200 hours a year.

Class C: a $320,000 Cirrus SR22

Example: Cirrus SR22 (G3-era): four seats, fixed gear, 310 hp Continental IO-550-N, airframe parachute. Fixed costs are $16,600 a year and variable costs are $201.84 per hour. The group loan is $272,000 at $2,275 per month.

Going from sole ownership to a three-way split cuts this owner's yearly cash outlay from $53,993 to $24,726, and the down payment from $48,000 to $16,000. Moving from three partners to four saves another $3,658 a year each, which is a smaller step than the first split, while the airplane's schedule tightens from 150 to 200 hours a year.

A cheaper-to-fly $200,000 option: an early Cirrus SR20 at a similar price burns less fuel than an A36. Each gallon per hour you save is worth $7.24 per flight hour at the September 2026 national average, so a 4–5 gallon-per-hour difference is roughly $29–$36 per hour before reserves.

Why does the cost per hour depend on total hours, not partners?

Hourly cost is the fixed pool (fixed costs plus loan payments) divided by the hours flown, plus the variable rate. It makes no difference whether one person flies all the hours or four people split them. A sole owner who flies 150 hours a year pays the same per hour as each of three partners flying 50. A partnership lets a 50-hour pilot reach that 150-hour efficiency.

The practical rule: if you personally will fly enough hours to keep the airplane busy, sole ownership costs about the same per hour and gives you the schedule to yourself. If you won't, a partnership is how you reach that hourly cost. The non-financial side of this choice is covered in aircraft partnership vs sole ownership.

How much of the loan payment is really a cost?

Loan payments are cash out of your pocket, but they aren't all expense. In the first year, $1,617 of the Archer's $7,679 in payments goes to principal. For the A36 it's $3,593 of $17,063, and for the SR22 $5,749 of $27,301. In a three-way SR22 split, that is $1,916 of equity per partner in year one, and the principal share grows each year. When you sell your share, what you get back depends on the airplane's value. As of mid-2026, Sandhills reported used piston-single inventory down about 17% year over year and asking prices roughly flat.

What happens when partners fly very different hours?

Equal splits work when members fly similar amounts. When they don't, the light flyer subsidizes the heavy flyer's availability. Here is a three-way SR22 with members flying 25, 50, 100 hours (175 hours in total). It compares an equal split of fixed costs with one where fixed costs are allocated by hours flown. Loan payments stay equal because each member owns an equal third.

Neither model is "right". An equal split charges for the option to fly. Hour-based allocation charges for actual use but can leave a light flyer feeling they are paying for the heavy flyer's hangar. Some groups split fixed costs equally and add a small surcharge per hour above an agreed baseline. Pick one before you buy and write it into the partnership agreement.

What does each partner's share of the loan look like at different rates?

Rate moves change the group payment more than most partners expect. Here is the SR22's $272,000 group loan over 20 years at three rates inside the range quoted as of September 2026:

Principal and interest only, illustrative, not a quote. The per-partner figure is a budgeting convention. On a joint loan, each guarantor is usually responsible for the full group payment if others stop paying. If you are buying into an existing group rather than borrowing together, the financing is different. See how to finance a partnership share.

Which partnership costs do the tables leave out?

• Setup costs: attorney fees to draft the agreement, LLC formation and annual state fees, the pre-buy inspection, and title and escrow. Ask for flat-fee quotes. A multi-member LLC normally files a partnership tax return and issues each member a Schedule K-1, which may mean paying a preparer.
• A cash cushion: separate from hourly reserves. For example, three months of fixed costs would be $2,525 for the Archer, $3,325 for the A36 and $4,150 for the SR22, split among the members.
• Vacancy risk: if one of three A36 partners leaves and the share sits empty for six months, the two remaining partners absorb about $5,061 of fixed costs and loan payments, roughly $2,530 each.
• Insurance changes: adding a low-time or non-instrument-rated partner can raise the premium for everyone. Get a quote with every named pilot before you sign.
• Big-ticket items: engine and propeller reserves assume the group actually funds them. A partnership that "reserves" on paper but spends the cash will face a special assessment at overhaul. See engine overhaul financing.
• Type-specific costs: Cirrus owners should also budget for the periodic parachute (CAPS) repack. Get a current quote for your serial number.

How this guide differs from related guides

This page owns the numbers. For the non-financial trade-offs of availability, control and relationships, and a checklist of when a partnership fits, see aircraft partnership vs sole ownership. For the clauses that put these cost rules in writing, see the aircraft partnership agreement checklist. For how lenders structure one loan for a group, see financing a co-owned aircraft. To pay for a share in an existing group, see financing a partnership share. For entity setup, see LLC ownership structure. To test your own payment, use the aircraft loan calculator.

Frequently asked questions