@PAccisano
If you have a balance in any traditional (pre-tax IRA) that consists of deductible (tax-free) funds, then the "back door rollover" won't work the way you expect. You have to follow the pro-rata rule and all your traditional IRA accounts are considered as one account for the conversion. If you have pre-tax IRA funds, we can explain this more if needed.
After you complete the recharacterization, you must file an amended 2023 return to report the recharacterization. Because you already filed, you must file the amended return by mail and write on the top of page 1, “Filed pursuant to section 301.9100-2”.
You also have the option of simply withdrawing the excess contributions. You must include any earnings attributed to the contribution as taxable income for 2023 (by creating a fake 1099-R, we can help with this). Again, because you already filed and it is past the April 15 deadline, you must file the amended return by mail and write “Filed pursuant to section 301.9100-2” on page 1.
