Free Tax Guide
California Use Tax Planning for Aircraft
Key Takeaway
Aircraft use tax in interstate commerce involves four analytical areas: (1) CA use tax on aircraft brought into state; (2) interstate commerce exemption for aircraft used in interstate / foreign commerce; (3) common carrier / principal use analysis; and (4) proper documentation of out-of-state purchase and interstate use. The short version is that aircraft purchases attract CA’s scrutiny — CDTFA aggressively challenges interstate commerce exemption claims. In our experience, the CDTFA interstate commerce exemption audit is among the most fact-intensive in state tax practice.1
Aircraft tax question? A 15-minute consultation is free.
Four aircraft use tax analytical areas.
The Four Aircraft Use Tax Areas
Use TaxCA ImpositionInterstateCommerce ExemptUse TestPrincipalDocsFlight Records
| Area | Treatment2 |
|---|---|
| CA Use Tax | On aircraft in CA |
| Interstate Exemption | CDTFA Reg 1620 |
| Principal Use | 50%+ interstate |
| Documentation | Flight logs critical |
Quick Reference
Jump to: use tax, interstate, use test, or docs.
1. CA Aircraft Use Tax
Use tax on aircraft brought into CA for use.
If this is you: Purchased aircraft out of state and brought to CA. Use tax applies unless exempt. Significant dollar amounts.
Use Tax Strategy
- Determine CA use / storage.
- Evaluate exemption availability.
- Document interstate use.
- File use tax return.
- Engage counsel for audit.
2. Interstate Commerce Exemption
Aircraft principally used in interstate / foreign commerce exempt.
If this is you: Business aircraft used for interstate travel. CDTFA Reg 1620 exemption. 50%+ interstate use during first 6 months. Documentation intensive.
3. Principal Use Test
50%+ interstate flight hours / miles in first 6 months.
If this is you: First 6 months after first CA use. Flight time / miles measured. 50%+ interstate / foreign commerce required. Each leg analyzed.
4. Documentation Requirements
Flight logs, pilot records, passenger manifests.
If this is you: Preparing for potential audit. Flight logs contemporaneous. Purpose of each flight. Passenger manifests. Business purpose documented.
Aircraft tax question? Book consultation.
Aircraft Tax Lookup
| Authority | Purpose |
|---|---|
| CA RTC §6201 | Use tax |
| CDTFA Reg 1620 | Interstate exemption |
| Flight logs | Documentation |
| FAA records | Registration |
| CDTFA Pub 79-A | Aircraft guide |
Aircraft Tax Statute
- 3-year CDTFA statute.
- 8-year for unfiled returns.
- Unlimited for fraud.
Aircraft Tax Patterns
| Situation | Outcome |
|---|---|
| Proper interstate exemption | Exempt |
| Failed 50% test | Full use tax |
| Documentation weak | Exemption denied |
| Fractional ownership | Special rules |
Aircraft Tax Audit
Questionnaire
CDTFA aircraft questionnaire.
Documentation Review
Flight logs and records.
Assessment
If exemption denied.
First 48 Hours
- Preserve flight logs.
- Document business purpose.
- Assess exemption basis.
- Calculate exposure.
- Engage counsel.
★Brotman Law handles aircraft use tax. Based in San Diego.
The ROI Question
Aircraft tax easily reaches hundreds of thousands. Professional representation essential.
Dealing with Multistate Tax Exposure?
Multistate obligations don’t announce themselves — most businesses accumulate sales tax, income tax, or payroll tax exposure in other states without realizing it until they’re contacted or audited. If you’re selling across state lines, have remote employees, or aren’t sure where your business has nexus, a brief review can identify where you have exposure and what to do about it.
Review My Multistate Exposure → Or call: (619) 378-3138
When to Engage
- Aircraft purchase with CA exposure.
- CDTFA aircraft audit.
- Interstate exemption claim.
- Fractional ownership.
Aircraft tax question?
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Guide Chapters
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Frequently Asked Questions
Is aircraft subject to CA use tax?
Yes when brought into CA for use / storage. Substantial dollar amounts. Interstate commerce exemption available for qualifying use.
What is interstate commerce exemption?
CDTFA Reg 1620 exemption for aircraft principally used in interstate / foreign commerce. 50%+ interstate use in first 6 months.
What is principal use test?
50%+ of flight time / miles in interstate / foreign commerce during first 6 months after first CA use. Subsequent use also monitored.
Does trip origin / destination matter?
Yes. CA-to-CA flights are intrastate. CA-to-out-of-state / out-of-state-to-CA interstate. Pure business purpose also relevant.
What documentation is required?
Flight logs, pilot reports, passenger manifests, business purpose documentation, invoices / expenses, maintenance records.
Are empty legs counted?
Yes typically. Repositioning flights part of analysis. All flight hours / miles counted.
What about fractional ownership?
Special rules apply. Each fractional owner’s use analyzed. Program operator responsibility. Complex analysis.
What if 50% fails?
Full use tax due. No partial exemption. Either qualifying (50%+) or not.
Does training count as use?
Yes. Pilot training flights counted. Often domestic. Factor into analysis.
What about personal use?
Personal use counted toward total. Still 50% test. Document mixed use carefully.
Can I claim exemption later?
Yes if 50% test satisfied. Refund claims within statute. Professional preparation.
What's foreign commerce?
Flights between U.S. and foreign countries. Often counted with interstate for 50% test.
What's CDTFA questionnaire?
Standard aircraft tax questionnaire to determine tax liability. Consult counsel before completing.
Next Steps
Aircraft tax question? 15-min consultation free.
- Interstate commerce exemption: CDTFA Reg 1620. Use tax: CA RTC §6201.
- Aircraft taxation per CDTFA Publication 79-A.
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