I am trying to lower my Illinois state tax liability. Is it too late to contribute to a 529 plan?

[vargashome]

Is too late to contribute or did I miss the deadline at 12/31/18?

[CherylW]

Yes, it is too late.

This, from www.savingforcollege.com:

Illinois

State tax benefit: Contributions and rollover contributions up to $10,000 for a single return and up to $20,000 for a joint return are deductible from Illinois state income tax. Only the principal portion of rollover contributions is eligible.

Deadline: December 31, 2018

Maximum aggregate plan balance: $400,000