I have capital contributions on line 2 of my shareholder's basis worksheet of my form 1120S K-1, where do I enter that on my personal return?

[LudwigVan_fan]

The short answer is don't enter the capital contributions on your form 1040.

Your capital contribution is recorded on the Form 1120S as part of the total contributions of capital.

What you need to do is keep record, year by year, of your basis in the S corporation stock and debt (that you loaned to the S Corp).  Brief incomplete answer is:

Basis of S Stock:

Amount paid/contributed to acquire stock

Add current year contributions to capital, ordinary income passed through from S corp and items of income that are separately stated.

Subtract current year ordinary loss of the S Corp (if there is one) and separately  stated items of deductions shown on Sch K-1.  Also subtract distributions from the S Corp to you.

This needs to be done year by year from the first year you acquire any stock in the S Corporation.  Note this is not recorded on any return, it must be kept in your records.

See the following link for more information regarding stock and debt basis in an S Corporation

https://www.irs.gov/businesses/small-businesses-self-employed/s-corporation-stock-and-debt-basis