Tax Legal Services · Primary-source case analysis

Knetsch: A Circular Annuity Transaction Did Not Create Deductible Interest

By Aneeta Mishra and Timothy Chan

Published May 15, 2026

Knetsch v. United States examined purported interest paid in a transaction built from annuity purchases, immediate borrowing, and repeated annual adjustments.

The transaction was economically circular

Premiums and loans largely offset, leaving only a small net value while generating large claimed deductions.

No meaningful indebtedness supported the payment

The Court concluded that the arrangement did not create the kind of genuine borrowing contemplated by the interest-deduction statute.

Tax motivation was tested against substance

The problem was not motive by itself but the absence of a real transaction with practical economic effects apart from deductions.

The deductions were disallowed

Labels in the contracts could not substitute for the economic relationship shown by the full record.

Key takeaways

• Trace every cash flow and offsetting obligation.
• Identify non-tax economic consequences and realistic risk.
• Do not rely on contractual labels alone.
• Analyze current economic-substance and penalty provisions separately.