The main disadvantage to a Roth IRA is its contribution tax status. You pay full income taxes on money you put into this account, whether through contributions or conversions. For example, say that you convert $1.2 million from your traditional IRA to a Roth IRA. You would include that $1.2 million in your taxable income for that year, and would need available cash to pay the resulting taxes. Converting this amount will likely put you into the highest tax bracket of 35%.This tax status makes a Roth IRA good ...