Throwing this out to the people in the know regarding the Jobs Act and 2018 quarterly estimates. I am self employed and 2017 was a good year for me due to a few large projects that don't come along very often. Naturally, I got hammered on my taxes. My question for the board is if the Safe Harbor rule over rides the Jobs Act when it comes to quarterly estimating? It sounds as if being self employed is a good thing under this new act. If what happened last year happens again this year, I would owe quite a bit less in taxes next year at this time, and I am already off to a bit slower start this year when compared to last year. Will I get penalized if I pay in less than 1/4 of last year every quarter? It seems pointless for me to overpay thousands unless I want a big return next year.