Severe penalties apply to delinquent payments. It simply a matter of learning how to compute the taxes required for each pay period and then making a timely payment. Computer programs such as QuickBooks do most of this for you. These requirements actually involve fairly simple clerical procedures, which can be learned in a few hours. The hard part is actually paying the taxes.
Businesses have a tendency to make unauthorized loans from taxing authorities.
This is not a good business practice. Bankers have historically been very stuffy and hard to deal with. This has changed a great deal recently as banks have gone after the small business market. The bankers have not really had such a campaign so most business owners believe the IRS is a friendlier source of loans. Believe me this is a misunderstanding of the message of both the IRS and the banking community.