e-filing for 2018 is closed. You'll have to print and mail the return along with the notice. read the filing instructions as to any forms like w-2's or 1099a that need to be attached. use the mailing address in the notice. and use a mailing method where you can track it or get proof of delivery. if you don't owe there should be no penalties but any refund is likely forfeit. if you owe send the amount. the state will likely send you a bill for any penalties or interest.
