As an employer, you must pay employment taxes if you have employees. Fail to pay and the IRS will rain all over your parade.
Penalties
If you have employees, you absolutely must deduct and withhold various taxes from the paychecks of your employees. Since you are deducting money from the employee’s paycheck, you are handling their funds. [...]

If you have employees, you are responsible for paying a variety of taxes at the federal, state, and local levels. You must also withhold certain taxes from the paychecks of your employees. So, what are employment taxes?
Employment taxes include the following.
1. Federal income tax withholding

If your business has employees, you must pay employment taxes. The payment system can be a bit confusing, so this article discusses how to go about depositing employment taxes with the IRS.
Depositing Employment Taxes
To pay employment taxes, you must deposit the money with the IRS. As is typical with tax situations, the payments are not [...]