First of all let's go over what payroll taxes are. Payroll taxes are also known as payroll deductions. Payroll taxes are money that is taken out of each paycheck that you get to go towards paying three different types of deductions out of each check.
The main deduction that is taken out of your check is money that will go towards your income tax. At the end of each year you have to pay taxes to the Internal Revenue Service. These taxes pay the government on any money that you earned through that year. Any income that you make will be taxed regardless of what job you had or how many jobs you had.
Income tax deductions are the biggest amount hat is taken out of your check. Although it seems minimal at the end of the year most people get a tax refund check because the amount taken out of each check is actually more than you actually owed on your taxes.
The second deduction taken out is money paid to social security. Social Security is money that you will receive when you get to the point where you can retire. Similarly the other amount that you pay out goes to Medicare. Medicare goes towards helping seniors pay for their medical expenses. Although this is not something that you need at the moment it will go towards your care in the future.
There are several places that you can go if you need to get help figuring out how much to have deducted from your paychecks. If you are an employer that needs help figuring out how much to deduct from your workers paychecks there are places you can go for help too.
If you are a business it is greenly a good idea to consult a tax professional to make sure that all of your tax forms are filled out correctly and to make sure that you are deducting the proper amount from those paychecks.
If you are an individual having issues trying to figure out how much to have deducted normally you can just ask your employer. Employers generally know about how much you need to have deducted in order to be at about the same level of income tax you will owe at the end of the year.
Either way, if you have serious questions you can always contact the IRS or a tax professional.