@ chia thank you for the question. So, you may need to expand on your question, so that I can answer it fully. When were your non-deductible contributions made prior to 2022? It appears based upon your question that you did a Backdoor Roth in 2022.
First, Form 8606 is to report several transactions relating to what the Internal Revenue Service (IRS) calls "Individual Retirement Arrangements" and what most people just call IRAs. These are accounts that provide tax incentives to save and invest money for retirement.
Non-deductible contributions that are reported on Form 8606, when there is not a Backdoor Roth, are subject to the Pro-Rata Rule, which is when you make nondeductible contributions to an IRA, a certain percentage of your RMD is tax-free. However, because you made after-tax contributions, your overall pool of assets subject to RMDs increases.
All the best,
Marc T.
TurboTax Live Select Time Tax Expert
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