State tax filing

At the beginning of the Oregon return, on the page titled Here's the income that Oregon handles differently, the first item is Oregon higher education and ABLE account Deposit Fiscal-Year Carryover.   

You can deduct up to a maximum of $5,885 per year if you are Married Filing Jointly ($2,940 all others) for contributions to a Oregon 529 College Savings Plan and/or ABLE accounts.  Tax year 2019 was the last year a subtraction was allowed for contributions made. Any excess contributions may be carried forward for up to four years.

Contributions to out-of-state 529 plan funds do not qualify for this deduction.

If you have a carryforward amount of more than $5,885 if you are Married Filing Jointly ($2,940 for all others) in a year, you can carry forward the overage for up to four years.