Year end bonus to pay S-corp taxes: Timing?

Hi,

I just found this forum and I can't quite find an answer to my question.

I ran a year of a year bonus check to pay taxes on distributions taken through out the year. Much like this forum topic: http://www.biztaxtalk.com/node/992

I am issuing my bonus check on 12/31. My payroll software (PayCycle) will make the fed and state taxes payments for me, but they will be paid on 1/15 and 1/28 respectively.

Is this ok, or must they be paid by 12/31?

Thank you.