Many tax professionals and advisors recommend adjusting your w-4 allowances so

Many tax professionals and advisors recommend adjusting your W4 allowance so that YOUR TAX PAYMENT WILL EXACTLY MATCH YOUR TAX LIABILITY.
The W4 form is used to claim allowances which one is entitled to. The number of allowance which one claims depends on one's status. Most people under pay or over pay their tax payment as a result of the number of claims that they make. Experts suggest that individuals should adjust their W4 allowance in such a way that over payment and under payment of tax will be avoided.

Many tax professionals and advisors recommend adjusting your W-4 what you owe in taxes matches what you are liable to pay. Your W-4 shows employers and the IRS what you can be withheld from regarding taxes and what is going to need to be taken out of your checks to make sure proper taxes are paid. Due to most not being held correctly, most people end up paying to much or too little which results in paying the IRS at the end of the fiscal year or getting a check reimbursed back.