If you have PhD training-related fellowship income (postbac, grad student, postdoc, etc.), your income tax is almost certainly not being automatically withheld, and you must grapple with the estimated tax system.
You need to 1) determine whether you are required to pay estimated tax, 2) calculate your payment amount(s), and 3) make the payments.
This process can be a daunting to tackle for the first time, and AFAIK there isn't a software product to help you with it. Don't let uncertainties about the process prevent you from paying your tax due (you may be fined) or, worse, distract you from your research!
I have removed all the stress from the process of paying quarterly estimated tax through this workshop, which is designed specifically for fellowship recipients who are US citizens or residents (for tax purposes). When you purchase the workshop, you will maintain access for four quarters, including an update if the calendar year turns over.
The self-paced video workshop walks you line by line through filling out the necessary form to calculate your quarterly estimated tax, including discussions of many common scenarios PhD trainees experience, such as: switching onto or off of a fellowship mid-year, having no tax liability in 2018, being under age 24, and filing a joint tax return with your spouse. I also include an Excel spreadsheet to help you with the math in the form.
Best of all, I will hold one live Q&A session leading up to each estimated tax deadline (four in your supported year with the workshop) to clear up any questions that arise for you while watching the videos. It's no problem if you can't attend live; you may submit questions in advance and will receive a recording of the session.
Purchase the workshop today to have the smoothest possible experience of calculating and paying quarterly estimated tax on your PhD fellowship!
Emily Roberts, PhD