Client is a S corp. Made 7K of contributions in 2022. She has contributed $1,000 per month in 2023.

Client is filing taxes now (Oct 15 deadline). I spoke with accountant about “recoding” the contributions made in 2023 to 2022. We plan to recode the contributions to 2022, which will consist of recoding $7,000 in employee contributions and $1,418 in employer contributions.

I wanted to make sure BOTH employee and employer contributions can be made up until tax filing deadline. Furthermore, a 5498 was already issued by the custodian for prior year contributions. Will the custodian need to issue a corrected 5498 after we make changes?