Flying Part 91 Contract Trips Through an LLC? What the IRS Actually Says

Plenty of business aviation pilots pick up contract trips for Part 91 flight departments, often setting up a limited liability company to invoice the work. The LLC can be a sensible tool, but much of what gets said about it on ramps and crew forums is wrong. Here is what public IRS guidance actually says, so you can have a better-informed conversation with your own tax professional.

This article summarizes publicly available IRS material. It is not tax or legal advice. Your situation depends on your state, your contracts and your full tax picture. Consult a qualified tax professional, such as a CPA or enrolled agent, before making decisions.

First question: are you actually a contractor?

An LLC does not decide whether you are an independent contractor. The relationship does. The IRS says that in deciding whether someone is an employee or an independent contractor, "all information that provides evidence of the degree of control and independence must be considered," grouped into three categories:

• Behavioral: does the company control, or have the right to control, what the worker does and how?
• Financial: who controls the business side, including how you are paid, whether expenses are reimbursed, and who provides tools and supplies?
• Type of relationship: is there a written contract, are there employee-type benefits, and is the work ongoing and key to the business?

The agency stresses there is no "magic" number of factors. A pilot who flies the same airplane for one owner on a fixed schedule, under that department's procedures, looks different from one who flies for several operators and sets their own availability. If the status is unclear, either the business or the worker can file Form SS-8 and ask the IRS for a determination, which the agency says can take at least six months.

How the IRS treats your LLC

An LLC is created under state law, and the IRS classifies it for federal tax purposes based on members and elections:

• A single-member LLC is by default "disregarded as separate from its owner" for income tax, so its income and expenses generally flow onto your personal return.
• An LLC with two or more members is by default taxed as a partnership.
• Either can file Form 8832 to elect to be treated as a corporation. An S corporation election is a separate step with its own rules.

One nuance: the IRS says a single-member LLC is still considered a separate entity for employment tax and certain excise taxes. That matters if your LLC ever hires anyone.

The bottom line is that forming an LLC does not by itself change your federal income tax. Whether an election makes sense is exactly the question to bring to a professional.

Self-employment tax and quarterly estimates

If you are self-employed, the IRS self-employed tax center says you generally must pay self-employment tax, which covers Social Security and Medicare, in addition to income tax. Your net profit is your business income minus business expenses.

Key points from IRS guidance:

• You must file a return if net earnings from self-employment were $400 or more.
• A disregarded single-member LLC owner generally reports business income on Schedule C and figures Social Security and Medicare tax on Schedule SE.
• With no employer withholding, you generally pay estimated tax during the year, using the worksheet in Form 1040-ES to see whether quarterly payments are required.
• If your income estimate turns out too high or too low, the IRS says you can refigure it for the next quarter.

For pilots coming from W-2 jobs, quarterly estimates are the most common surprise. A big contract month in spring does not wait until April to become a tax obligation.

Records and expenses

IRS Publication 334, the Tax Guide for Small Business, explains what counts as a deductible business expense and how to keep records. For a contract pilot, that may cover items such as recurrent training you pay for yourself, travel costs that are not reimbursed, and professional fees. Whether a specific item qualifies, and how reimbursements interact with it, depends on your facts. Keep invoices, receipts and trip logs together, and do not assume a deduction works because a colleague claims it.

A practical checklist

1. Read your contract and compare it with the IRS's three control categories.
2. Decide with a professional how your LLC should be classified.
3. Set aside money for income and self-employment tax from every invoice.
4. Calendar quarterly estimated tax deadlines.
5. Keep a clean, separate business account and records.
6. Review the arrangement each year as your client mix changes.

A well-run contract business is a lot like a well-run trip: the paperwork is done before you need it. Start with the IRS sources linked below, then sit down with a qualified tax professional.