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.

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Sep 22, 2026

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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.

In brief

A high earner's $7,500 backdoor Roth conversion turned taxable after IRS counted a $300,000 pre-tax IRA balance. 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. Originally reported by 24/7 Wall St..

Quick answers

What is a backdoor Roth?
A backdoor Roth is a two-step move for high earners who exceed direct Roth income limits.
What is the key takeaway from She Did a Backdoor Roth. Her $300,000 Rollover IRA Made Almost All…?
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.

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

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.

The 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.

Read the original on 24/7 Wall St.

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