K-1 Box 17 code a

[jackma8888]

I hired account to do my LLC return. This LLC has a rental property. He did this as Gross receipts and sales. And has depreciation of this property. But I see all K-1 box 17 is empty. When I do it as 8825, box 17 always has a code A and a number. What happened? Is this normal?

Thanks 

[JamesG1]

This amount reports the depreciation difference between the regular tax system and the Alternate minimum tax system.  Contact the issuer of the K-1 if you have a question.

IRS Partners Instructions for Schedule K-1 (1065), page 25, states that box 17 reports Alternate minimum tax items.  The Alternate minimum tax is a parallel tax system that operates in the background of the regular tax system.  See TurboTax Help discuss AMT here.

Box 17 Alternative Minimum Tax (AMT) Items 

Use the information reported in box 17 (as well as your adjustments and tax preference items from other sources) to prepare your Form 6251; or Schedule I (Form 1041), Alternative Minimum Tax—Estates and Trusts. 

Code A. Post-1986 depreciation adjustment 

This amount is your share of the partnership's post-1986 depreciation adjustment. If you're an individual partner, report this amount on Form 6251, Part I, line 2l.