How long to keep w-4's?

It's generally recommended to keep your W-4 forms for at least four years after the filing date of your tax return, as this aligns with the IRS's statute of limitations for audits. Additionally, retaining them longer can be helpful for tracking changes in your withholding status. If you make changes to your W-4, keep the most recent version and discard older ones for clarity. Always consider consulting with a tax professional for personalized advice.