I am a full-time employee. My spouse is effectively employed long-term with one company, but has always been paid as an independent contractor.
If I plan on filing my 2018 taxes jointly with my spouse, but my spouse has not paid any estimated taxes during the year, is she likely to be on the hook for any penalties, etc., if my withholding was enough to cover our household combined tax bill?
Other notes: It may not be relevant, but my spouse is a green card holder.
Based on the IRS withholding calculator results, I expect to see a slight overpayment of my household's total federal income tax.