It is not that you pay taxes on your Roth IRA contributions. Technically, you do not get a deduction for your Roth IRA contributions.Let us say your taxable income for 2023 is $50,000. Consider the following three scenarios:1 - You made no IRA contributions2 - You made $5k traditional IRA contributions3 - You made $5k Roth IRA contributionsYour taxable income in scenario 1 will be 50k, it will be $45k in scenario 2, and will be $50k in scenario 3.When you make Roth IRA contributions, you just report that you made contributions (when you file your returns), you do not get a tax deduction on it.