2018 year-end deadlines
my529 will record tax-year transactions based on the following deadlines.
All contributions must be in good order—accurate, proper, legible, and complete.
1Paper forms and incoming faxes are considered manual submissions and must meet the deadlines for the manual process. A mailed contribution postmarked on or before the December 31, 2018, deadline but received in 2018 will be recorded as a 2019 tax-year contribution.