# She Did a Backdoor Roth. Her $300,000 Rollover IRA Made Almost All Taxable

> A high earner's $7,500 backdoor Roth conversion turned taxable after IRS counted a $300,000 pre-tax IRA balance.
- Title: She Did a Backdoor Roth. Her $300,000 Rollover IRA Made…
- Summary: A high earner's $7,500 backdoor Roth conversion turned taxable after IRS counted a $300,000 pre-tax IRA balance.
- Keywords: backdoor roth, ira, taxable conversion, pre-tax rollover, employer retirement plan, traditional ira, roth conversion, tax code, Did, Backdoor, Roth, 300
- Source: 24/7 Wall St. — https://247wallst.com/personal-finance/2026/09/22/she-did-a-backdoor-roth-her-300000-rollover-ira-made-almost-all-of-it-taxable
- Author: David Beren
- Published: 2026-09-22T23:14:13+00:00
- Read time: 1 min
- Topics: backdoor roth, ira, taxable conversion, pre-tax rollover, employer retirement plan, traditional ira, roth conversion, tax code
## What is a backdoor Roth?
A backdoor Roth is a two-step move for high earners who exceed direct Roth income limits.
## Her $7,500 conversion became taxable
A high earner contributed $7,500 on a non-deductible basis to a new traditional IRA and converted it a week later, expecting tax-free results.
## The $300,000 pre-tax IRA balance
She also held a $300,000 rollover IRA from a prior 401(k), all pre-tax, which the IRS counted.
## IRS aggregation rule
The IRS requires all traditional, SEP, and SIMPLE IRAs to be aggregated into a single pool for tax calculations.

> Internal Revenue Code Section 408(d)(2)
## Why the conversion became taxable
The $7,500 conversion showed almost all taxable income because the IRS counted the $300,000 pre-tax balance.
## The tax consequences
The after-tax portion remains as basis for future distributions, requiring Form 8606 filing for every non-deductible contribution.
## The fix: move to employer plan
Rolling the $300,000 pre-tax IRA balance into a current employer plan that accepts rollovers leaves only after-tax money in the IRA.
## Key takeaway

A high earner's $7,500 backdoor Roth conversion became taxable because IRS counted a $300,000 pre-tax IRA balance from a prior employer plan.