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I know the current values of our IRA's, but I entered contributions incorrectly on at least 7 or 8 previous tax returns. I would like to somehow bring these values up to date. Is that possible?
You need to correct your form 8606 for all years that are wrong and send them to the IRS. You definitely want to do this sooner than later. I helped one client fix over 30 years when the IRS required it.
Follow the instructions. I would mail with tracking to be sure of the safe arrival of your information. A signature is not required.
To correct your forms, you will need to go to IRS previous year forms and download one for each incorrect year. Use 8606 followed by the year that you need.
About Form 8606, Nondeductible IRAs - Internal Revenue Service
Example: To find the 2022 version of 8606

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