the w-4 is designed so that properly filled out there is enough withholding to break about even at filing time. Getting a large refund means you made an interest-free loan to the IRS for most of the year. if you want a larger refund, file a new w-4 for 2025. then on line 4c enter a number. Note that this is per pay period so if you put down $10 and get paid weekly an extra $520 will be withheld for the year. the same is true for the state
