The main thing you need to put on your W-4 besides your name, address and social security number is whether you are married or single and the number of exemptions you wish to take to lower the amount of money with held for taxes from your paycheck. The number of exemptions refers to how many people you support, i. e. children. Say you are single and have 3 children, you can put down 4 exemptions, 1 for your self and 1 for each child. This means you will have more pay to take home because you arenu2019t having it with held from your paycheck. If you are single and have no children, you can either take 1 or exemptions. If you make decent money, take deductions, if you are barely making it you could probably take 1 exemption. Just realize that if you take exemptions, and not enough money is taken out of your check to pay your taxes, you will be liable for it come April 15th.If you are married and have no children and you make decent money, take deductions. If you have children, only one spouse should take them as exemptions and it should be the one who makes the most money. For example, say your spouse is the major bread winner and you have 2 children, your spouse could take 4 exemptions (one for each member of the family) and then you would take exemptions.Usually, itu2019s best to err on the side of caution and take the smaller amount of deductions so that you wonu2019t owe a lot of money come tax time. If youu2019ve had too much with held it will come back to you as a refund.