- Stock and Debt Basis Limitations
- At Risk Limitations
- Passive Activity Loss Limitations
- Built-in gains
- Excess net passive income
- Late filing – a charge for each month or part of a month (up to 12 months) multiplied by the number of shareholders during any part of the year for which the return is due. (26 U.S. Code § 6699).
- Failure to furnish K-1 to shareholders. (26 U.S. Code § 6722 (a))