The Tax Cuts and Jobs Act (TCJA), enacted in December 2017, limited the itemized deduction for state and local taxes to $5,000 for a married person filing a separate return and $10,000 for all other tax filers. The limit applies to tax years 2018 to 2025.
As in prior years, if a taxpayer chose the standard deduction then state and local tax refunds are not subject to tax. However, if a taxpayer itemizes deductions for that year on Schedule A, Itemized Deductions, part or all of the refund may be subject to tax – but only to the extent that the taxpayer received a tax benefit from the deduction.