The completion of a W-4 is easy when performed in stages. The first thing is to fill in your personal data, including the filing status. Then, take the worksheet of Step 2 when you have more than one job or a working spouse, and you must make sure that all sources of income are properly withheld. In Step 3, make claims on behalf of dependents. Step 4 gives optional adjustments such as additional withholding or income which is not subject to withholding. Lastly, put your signature and date the form and present it to your employer. Checking your pay stubs after changing your W-4 is always a good idea as you can be sure of the amount that is being withheld and not get a nasty shock during the tax period. How To Fill Out A W4 For Dummies