I do both - I get a weekly paycheck and I take money as it's in there - I think my accountant calls them "distributions" I have a % of the distribution & put it in a seperate account & send that off to the IRS every quarter. It's usually less than what my accountant estimates I'm supposed to be sending it so I do get fined a little bit, but not much.
And I'll be loading up my pension plan until March 15th so that my bill will be minimal come April 15th
