Cash App Taxes won't be suitable for you if you've lived in more than one state over the last year because it doesn't let you fill out multiple state tax returns. If you have a form on this list, you also can't file your tax return on Cash App Taxes.  Another thing to note is that Cash App Taxes offers limited customer service support. There's an FAQ section on the website, but if you have a more nuanced problem, you'll have to send an online message and wait for them to get back to you.