Beechcraft Baron Cost of Ownership: Baron 55 vs 58 vs G58 Compared

This page compares the Baron family: the short-body 55, the long-body 58 and the glass-cockpit G58. All three use one set of assumptions, with annual and per-hour budgets side by side. Pick the Baron that fits your mission and budget here. Then go to its own page for the detail.

How much does each Baron cost to own per year?

Each model gets an illustrative price and loan structure so the math is comparable. The prices are placeholders, not valuations. Baron asking prices vary enormously with engine times, avionics and damage history, so check listings and Vref or Aircraft Bluebook. Older twins sit at the high end of AOPA's down-payment range and the short end of its term range, which is reflected here.

Baron cost per hour at 50, 100 and 200 hours

Each cell shows operating cost per hour first, then the figure including the loan payment.

Twin fixed costs are large, so utilization matters even more than on a single. At 50 hours a year, the G58 example carries about $658 of fixed cost in every hour. At 200 hours, about $165.

What does a Baron cost per month?

Most owners budget monthly. At 100 hours a year, spreading operating costs evenly over twelve months and adding the loan payment gives this cash picture. Real spending is lumpier, because the annual, insurance renewal and overhauls arrive as single bills.

The flying column includes the engine and prop reserves. Put those into a separate account every month so the money is there when an engine comes due. On a twin, skipping the reserve is the most common way a budget fails.

What the assumptions include

• TBOs come from Continental's SIL98-9 (Rev. E). It lists 1,500 hours for the IO-470-L (1,700 for serial 1006000 and later) and 1,700 hours for the IO-520-C. For the IO-550-C it lists 1,700 or 1,900 hours depending on serial number. All have a 12-year calendar limit. See SMOH vs TBO explained.
• Overhaul budgets are illustrative per-engine figures including removal and reinstallation. Factory-rebuilt and new engines cost more. Get written quotes.
• Annuals include an allowance for squawks. A twin inspection takes considerably more labor than a single's. See annual inspection cost by aircraft type.
• Fuel is priced at $7.24/gal, the AirNav national average, September 2026 (AirNav fuel report). Regional averages ranged from $6.76 to $7.88.

What does the second engine really cost?

On matching assumptions, the Baron 58's variable cost is about $363 per hour, against about $180 for a late A36 Bonanza. That is about 2.0 times as much. The second engine doubles fuel, the overhaul reserve and the prop reserve. It also brings a second set of engine accessories to maintain. The fixed side grows too: twin annuals, larger hangars and multi-engine insurance. The step from single to twin is covered in the Bonanza-to-Baron upgrade guide, and the single-engine numbers in the Bonanza cost comparison.

Two overhauls, rarely at the same time

Baron engines are often at different times since overhaul. That spreads the cash hit, but it means a used Baron can need one overhaul soon after purchase even when the other engine is fresh. Price each engine separately. On the illustrative budgets, both engines together represent $90,000 on a Baron 55, $110,000 on a 58 and $130,000 on a G58. A buyer who takes on an engine near TBO should see that reflected in the price or fund it through engine overhaul financing.

Which pre-buy findings change a Baron budget most?

• Engine times, both engines: hours and years since overhaul, compressions, borescope and oil analysis trends
• Props and governors: two of each, with their own overhaul intervals and costs
• Gear: Baron gear systems need correct rigging. Ask for a gear swing and check the records
• Fuel cells and nacelles: leaks and corrosion are expensive to fix after you own the airplane
• Avionics generation: legacy panel, aftermarket glass or factory G1000/NXi each carry different upgrade and support costs

Use a Baron-experienced shop and the general pre-buy inspection checklist. The engine-time pricing method is in how engine time affects value.

How are Barons financed?

Twin loans are shorter and need more cash down than single-engine loans. AOPA Aviation Finance lists multi-engine maximum terms of 10–15 years and down payments of 15% to 30% depending on age. Its lenders want multi-engine aircraft built in 1970 or later, with possible exceptions (AOPA). The shorter term raises the payment on the same loan. The Baron 58 example's $280,000 loan costs $2,636 a month over 15 years and $3,360 over 10 years at 7.75%.

Loan amount $280,000. Principal and interest only; excludes insurance, taxes and fees. Illustrative, not a quote.

• Age: Baron 55s built before 1970 fall outside many lenders' preferred window. The 58 and G58 fall inside it. See the Baron 55 page for how that plays out.
• Credit: most aviation lenders look for 680+, and the best pricing typically starts around 720–730+.
• Paperwork: see the aircraft loan requirements checklist.

How much does Baron insurance cost?

Twin premiums depend more on the pilot than on the model. Multi-engine time, Baron time, an instrument rating and recurrent training decide the rate, and hull value sets the hull portion. BWI describes 2026 pricing for experienced private pilots in personal-use pistons as "generally stable" (BWI, May 2026). The figures here ($6,000, $7,500 and $11,900) are planning assumptions for a pilot with meaningful twin and make-and-model time. A newly rated multi-engine pilot can pay far more, or be required to fly with an instructor for an initial period. Get quotes before you commit. Lender minimums are in aircraft loan insurance requirements.

Which Baron fits whom?

• Lowest entry cost, lighter loads: Baron 55. It has the cheapest acquisition and the least expensive IO-470 overhauls. It suits owner-pilots who want twin capability at the lowest entry cost. Check the build year against lender age rules first. See the Baron 55 cost page.
• Family and business travel on a moderate budget: Baron 58. The 10-inch longer cabin, double rear doors and club seating make it the practical six-seat Baron. Specs and payment examples are on the Baron 58 model page.
• Glass cockpit, newest airframe, bigger loan: G58. Operating cost is close to a 58's. The loan, hull insurance and depreciation exposure are much larger. See the Baron G58 cost page.
• Turbocharged or pressurized variants (56TC, 58TC and the pressurized 58P) use turbocharged Lycoming or Continental engines and cost more to maintain. Budget them separately with a shop that knows them.
• If you fly under about 75 hours a year, a twin's fixed costs dominate. Consider a partnership or a high-performance single. See partnership vs sole ownership.

How this page differs from other Baron pages

This page compares annual budgets across the Baron family. The buying decision, meaning which Baron, what to inspect and first-owner advice, is in the Beechcraft Baron buyer's guide. Specs and payment examples are on the Baron 58 model page. Model-specific budgets are on the Baron 55 and Baron G58 pages. Moving up from a single is covered in the Bonanza-to-Baron upgrade guide, and other aircraft are on the cost of ownership hub. Comparing against a single? See the V35B, F33A, A36 and G36 model pages and the Bonanza buyer's guide.

Frequently asked questions

Figures are illustrative planning numbers as of September 2026, not quotes or appraisals. Loan examples are principal and interest only.