These options allow you to reduce the tax withheld through claiming tax credits or deductions. You can also add other sources of income or extra withholding if you find you want more money withheld from your paycheck. Tools, such as withholding tax calculators, can help you figure out ...
You change your W-4 anytime. For instance, you can adjust your paycheck withholding to reflect life changes like a new job, marriage, or new child. Adjusting your W-4 can help you avoid a surprise tax bill or possibly net a larger refund.