How it helps
Use it for a focused task
This project helps you estimate how much your IRA could grow under different stock-to-bond allocations. You enter your current age, IRA balance, yearly contribution, and pick a risk profile.
The tool shows projected values at retirement age with a base case, a lower bound, and an upper bound. It also lets you compare three scenarios side by side and save them locally.
The supporting content explains contribution limits, common mistakes, how to read the probability ranges, and what assumptions the model uses. Start with the main calculator panel.



