topic Box 20 in Get your taxes done using TurboTax

Box 20

watergirl2 — Mon, 09 Mar 2026 05:19:45 GMT

Box 20 is empty on my business taxes. When doing my personal I get this screen asking me to make sure Box 20 is empty as I could be leaving money on the table.

The only box in my K1 that has an amount is box 1

Am I doing something wrong?

Thank you

Re: Box 20

ThomasM125 — Tue, 22 Feb 2022 17:31:25 GMT

Box 20 with a code of "Z" on a partnership K-1 schedule would be for your Qualified Business Income (QBI) deduction. It is a deduction that is typically 20% of your business income. It may be that your income doesn't qualify for QBI treatment, but most business income does. You should look at the paperwork attached to your K-1 schedule to see if there is a mention of QBI income, if so enter the code "Z" in box 20 and answer the questions there.