I'm married, filling jointly. Do I need to pay quarterly estimated taxes on my self-employment income if my husband has tax withheld on his income (he's employed)?

[sgirshick]

I've never paid estimated quarterly taxes before, as I've made too little, but this year I plan on making more (I already have some new clients). I have both a part-time job and am self-employed, and my husband is only employed. I wonder if we can just increase withholdings and not pay quarterly estimated taxes.  

And, we've already filed for 2016, so not sure if we need to do anything this year.  

[DS30]

It depends but if you are going to make a significant amount more income from your self-employment business, you will want to increase your taxes paid during the year to make sure that you are not subject to a underpayment penalty when you file your taxes next year.

You can either have your husband's employer withhold more taxes from his wages and/or file estimated tax payments.

Here is a link to the IRS related to tips about estimated tax payments - https://www.irs.gov/uac/newsroom/six-tips-on-making-estimated-tax-payments