question about shareholder stock basis for S Corp ( I am the only owner of the S Corp)

Last year, the ordinary business income for my S Corp was $50000 which was passed through to my personal income in K-1. Why does $50000 appear as shareholder stock basis for this year in TurboTax Business? I thought the shareholder stock basis should be 0 for this year since the income of the S Corp for last year has been passed to myself.