ThomasM125
Expert Alumni

Investors & landlords

That means the cost basis was not reported to you. You will have to do some research to determine when you acquired the security and at what cost. You can enter $0 for the cost basis, but that means you won't get a deduction for the cost when you report the gain on your tax return.

**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"