It's totally understandable how these companies get themselves into this situation. Your employee gets a paycheck of $1000 and in addition to that you send off

It's totally understandable how these companies get themselves into this situation. Your employee gets a paycheck of $1000 and in addition to that you send off $700 in payroll tax. Well, if your bank account is low you can pay the employee his/her regular amount but delay paying the tax. Your employee doesn't know as long as you manage to pay the withholdings before the end of the quarter (or worse case end of the tax year). This is known as "borrowing against payroll tax" and is pretty much universally known as a terrible idea! It does happen, though and a business might be dangerously low on cash, but has big amount coming in (from a consulting job, investment, etc). It's just very risky because if you get yourself into a position where you can't pay the bill, then you will be screwed just like one of those companies you mention. But - if you just simply use a payroll service and always pay the withholdings without fail then you won't have that temptation and won't get yourself into trouble. No need to try to hide your money or something so the IRS can't get it.