[nish93]

8621 is hard because the calculations are complex and there are a lot of edge cases, however, once you codify those, it's just a formula. Hence, we use this formula to generate a filled 8621 (based on your inputs on your tax bracket + our calculations) document that you can attach with your 1099.

We have worked with CPAs exclusively focused on US-India taxes to develop expertise on this. This video from our last webinar may help - https://www.youtube.com/watch?v=InNW3OZY-Ig

Tbh, if you're just looking for FD, 8621 doesn't even apply. But assuming you want to capture india's growth, you would want to invest in index funds giving 12-13% return, for which 8621 will be applicable. An offline process for filing 8621 is truly a nightmare, hence we are making it online and simpler.