Ian Bryzek, CPA
After-tax basis in an inherited retirement account
After-tax contributions create basis records that must be found, not estimated.
Look for Form 8606 history, plan after-tax contribution reports, or custodian basis statements. If missing, document the search.
Inventing a basis number is not a solution.
What to keep with the file
Inventing a basis number is not a solution.
What to do next
Search for after-tax basis records before treating an entire distribution as taxable or nontaxable.
What to gather
- Form 8606 copies if available
- Plan after-tax contribution reports
- Custodian basis statements
- Search log for missing basis records
- Distribution forms showing taxable versus nontaxable boxes
Who usually handles what
- Ian can organize the tax reporting question and the supporting records.
- The executor, trustee, or account custodian supplies records and confirms who has authority to act.
A practical next step
Search for after-tax basis records before treating an entire distribution as taxable or nontaxable.
Related guides
This is general tax information, not tax or legal advice. Outcomes depend on the documents, ownership, timing, and law that apply to the particular facts.