After this chat about the updated tool in Fidelity, I went in and ran through it again. Again I realized why I'm not a huge fan: like most tools, it's calculations are opaque.
Some of the things I ran into...
* The 2015 expenses are significantly higher than 2016 and onward. I didn't see anything within the expense inputs where a one-time expense would have been lurking. The PDF report didn't provide any clues that I could find.
Interesting. I didn't have this issue. Did you vary any expenses with start and end dates? That could account for it.
* I liked that they allow you to put medigap expense in with start/end dates...that's good feature.
I'm planning on MA plans so I missed that feature.
* Roughly aligns with my spreadsheets and i-orp.
* Chunking in a single federal tax rate seems a little crude.
Below is how I got around effective tax rate as well as using i-orp
The bottom line for me is that the user must simply have faith that it's working right, and that it's not doing anything dumb. I did click on the report, and it shows values calculated, one row per year, but the values they show are not enough to explain what's going on behind the scenes. A nice addition, but I wouldn't make it my primary tool.
Yes. The lack of detail makes me nervous, but we do what we must and adjust as things become clearer. FRIP and ESPlanner have always my preferred calculators as they have always been the most conservative AFAICT. After losing ESPlanner software in a recent computer crash, I may repurchase.