Why is my 2022 state refund listed under income?

A State Tax Refund is taxable if you itemized deductions on that prior year's federal return and took a deduction for state income taxes instead of the sale tax.  You got a deduction benefit for it so now you have to include it as income. If you took the standard deduction it is not taxable and you don't need to report it.

Your state refund is listed as income because it is potentially taxable income.  If you itemized (as opposed to taking the Standard Deduction) and you deducted your state income tax, your refund may be taxable.  Taxpayers who itemize their deductions on their federal income tax returns and receive a state tax refund must include the refund in income only if they deducted the state tax paid. Because of the $10,000 limit on itemized deductions for state income and property taxes, some itemizers are not able to deduct all of the state taxes they paid and do not need to include a refund in income.