I have a S Corp where I am the only shareholder and employee. I usually do payroll once per year - at the end of the year - during which I pay myself a salary for the whole year (pay period of Jan. 1st to Dec. 31st).
In addition to the salary I give myself, I also recognize flow through income from the S Corp.
In this situation, does it matter whether if I make my quarterly estimated tax payments throughout the calendar year (ie. once every 3 months) or whether I make one large estimated tax payment at the end of the year? Is there a penalty or any disadvantage of making one payment at the end of the year?