From the Oregon Department of Revenue’s website:

The Oregon surplus credit, known as the “kicker,” is a way for state government to return some of your taxes to you when revenues are more than predicted. Every two years, the Oregon Department of Administrative Services (DAS) Office of Economic Analysis (OEA) determines whether there is a surplus and the amount to be returned to taxpayers as a kicker. If there’s a surplus, the kicker may be claimed on the return as a refundable tax credit or donated to the State School Fund. The kicker credit is available only on the return for an odd-numbered year. If there’s no surplus, or if the tax year is even-numbered, no kicker is available.

For the 2021-23 biennium, OEA has confirmed a kicker of more than $5.61 billion. Taxpayers will claim the kicker as a refundable credit on their 2023 tax return filed in 2024. To calculate the amount of the credit, taxpayers multiply their 2022 tax liability before any credits – line 22 on the 2022 Form OR-40 – by 44.28 percent. Taxpayers who claimed a credit for tax paid to another state would need to subtract the credit amount from their liability before calculating the credit.

You can also find the FAQ at this sight: https://www.oregon.gov/dor/programs/individuals/Pages/Kicker.aspx

To use the kicker calculator the taxpayer will need to enter the following
Taxpayers Name, Social Security Number and Filing status for 2022 and 2023
You can find the Kicker Calculator here: https://www.oregon.gov/dor/Pages/index.aspx

As in years past the kicker amount will be applied to your 2023 tax return as a credit when you file your personal tax return.

If you have not filed your 2022 Oregon tax return and could be eligible for the kicker, we would encourage you to file your returns as soon as possible.

Please let us know if you have any questions.