For reference, see IRS Pub 590A
https://www.irs.gov/publications/p590a#en_US_2019_publink1000231024
Applying excess contributions.
If contributions to your Roth IRA for a year were more than the limit, you can apply the excess contribution in 1 year to a later year if the contributions for that later year are less than the maximum allowed for that year.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
