Final answer:
To compute the Federal Pension income subtraction for Oregon, the household income not including Social Security benefits is not required. Important factors include months of service and the taxable pension amount.
Step-by-step explanation:
The information not required to compute the Federal Pension income subtraction for Oregon is c. Household income not including Social Security benefits. The necessary information typically includes the total months of service before October 1, 1991, and the taxable Federal pension amount. Understanding how to calculate the Federal pension income subtraction can impact the amount of state tax owed, and it requires specific information related to your Federal pension and service time.