Investors & landlords

Correct.  You should check the box  asking if you are at risk.  If you don't, then form 6198 will be generated.  Here is specific information from the IRS instructions:

 

At-Risk Limitations

Generally, if you have (a) a loss or other deduction from any activity carried on as a trade or business or for the production of income by the partnership, and (b) amounts in the activity for which you are not at risk, you will have to complete Form 6198, At-Risk Limitations, to figure your allowable loss for the activity.

The at-risk rules generally limit the amount of loss and other deductions that you can claim to the amount you could actually lose in the activity. These losses and deductions include a loss on the disposition of assets and the section 179 expense deduction. However, if you acquired your partnership interest before 1987, the at-risk rules do not apply to losses from an activity of holding real property placed in service before 1987 by the partnership. The activity of holding mineral property doesn't qualify for this exception. The partnership should identify on a statement attached to Schedule K-1 any losses that are not subject to the at-risk limitations.

Generally, you are not at risk for amounts such as the following.

  • Nonrecourse loans used to finance the activity, to acquire property used in the activity, or to acquire your interest in the activity that are not secured by your own property (other than the property used in the activity). See the instructions for item K, later, for the exception for qualified nonrecourse financing secured by real property.

  • Cash, property, or borrowed amounts used in the activity (or contributed to the activity, or used to acquire your interest in the activity) that are protected against loss by a guarantee, stop-loss agreement, or other similar arrangement (excluding casualty insurance and insurance against tort liability).

  • Amounts borrowed for use in the activity from a person who has an interest in the activity, other than as a creditor, or who is related, under section 465(b)(3), to a person (other than you) having such an interest.

 

You should get a separate statement of income, expenses, and other items for each activity from the partnership.

Note.

 

Box 21 in Part III of Schedule K-1 (Form 1065) will be checked when a statement is attached.

 

@Claude4