Quote from lindq:
If you've been reporting substantial income and not paying quarterly taxes and have not been assessed penalties, then you have simply been lucky...not right.
There is no confusion about this on the part of the IRS or knowledgable tax authorities. The regulations are very clear, and as I said I myself have paid penalities.
If you want to skip quarterly payments, go for it. But you put yourself clearly at risk of penalties and having to deal later with the IRS and your tax preparer.
As for me...having been through it once... it isn't worth that hassle, and the risk of opening up other issues in an audit.
Are you an attorney? My tax preparer is, he and his partner have a large and successful firm, recommends this, advises this, and has yet to have been "unlucky". He signs my returns each and every year, and assures me, if there is anything incorrect, he has much more to lose than I do. Heck, this is their business.