How a Backdoor Roth IRA Adds $7,500 a Year of Roth Wealth for a $300,000 Earner Couple Over the Income Cap

A married couple with high W-2 income cannot directly contribute to Roth IRAs because modified adjusted gross income falls within the 2026 phase-out range and reaches full phase-out at $300,000. The income wall can be bypassed using a backdoor Roth IRA: each spouse makes a non-deductible traditional IRA contribution and then converts the after-tax amount to a Roth IRA shortly afterward. Because the contribution is after-tax, the basis generally matches the conversion amount, making the conversion tax roughly zero when no other pre-tax IRA assets exist. Over time, repeated contributions can compound into substantial tax-free Roth wealth, with additional catch-up contributions after age 50. The strategy fails if pre-tax IRA balances exist due to the pro-rata rule, which taxes most of the conversion.

"The wall is an illusion. A backdoor Roth IRA gets them the contribution anyway, and over a working career the move stacks into serious tax-free money. The IRS has tolerated this maneuver since Congress lifted the income cap on Roth conversions in 2010, and recent legislative attempts to close it never passed."

"Each spouse contributes $7,500 to a non-deductible traditional IRA, a vehicle with no income limit at all. A few days later, each spouse converts that balance to a Roth IRA. Because the contribution was already after-tax, the cost basis matches the conversion amount and the tax owed on the conversion is roughly zero, provided no other pre-tax IRA dollars are lurking in the background."

"Compounded at 7% for 20 years, one spouse's $7,500 a year grows into about $328,500 of Roth wealth. Run the same play on both sides of the marriage and the household lands on roughly $657,000 in tax-free assets that the income cap was trying to deny them. Once each spouse turns 50, the $1,100 IRA catch-up goes through the same door, which projects to roughly $96,000 of additional Roth wealth for the couple over 20 years."

"The single mistake that turns a clean backdoor Roth into a tax bill is ignoring the pro-rata rule. The IRS treats all of your traditional, SEP, and SIMPLE IRA balances as one pool when calculating the taxable portion of a conversion. If a spouse holds $93,000 of pre-tax money from an old IRA rollover and contributes $7,500 of new after-tax money, only about 7% of the conversion is treated as basis. The other 93% is ord"

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