Depending on the amount you owed they may require you to make quarterly estimated payments the next year -- regardless of what you expect to make. You can counter that with some other IRS forms though.
In particular there is one you can file that basically says I have no idea how my money will come in and can't possibly pay 1/4 of it in Q1. This can help avoid any future fines where the IRS will penalize you saying you withheld payment till the end of the year.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.