A summary of the main updates to tpawplanner.com since the first version in December:
1. Spending floor + fixed spending
A spending floor can now be set. Fixed withdrawals can be modeled by setting spending floor = spending ceiling.
2. Discretionary goal scaling
This has been done. Discretionary goals are now updated on the basis of wealth rather than the performance of a hypothetical portfolio. This will result in better scaling of discretionary goals in the simulations.Ben Mathew wrote: ↑Wed Dec 08, 2021 2:19 pm The modeling behind legacy and extra discretionary withdrawals is bit tricky because they have to scale with the market (i.e. if markets do well, the target should increase, and if markets do badly, the target should decrease.) The scaling I'm doing isn't quite perfect and it's possible that it's sometimes allocating too much to legacy and too little to retirement spending.
[...] at some point I'll try to improve the scaling algorithm. That's a tough problem, and probably a long term goal.
3. Additional output graphs
Additional output graphs are now available for spending subcategories, portfolio balance, asset allocation, and withdrawal rate. Use the drop down menu next to the graph title to select these graphs. Restricting a graph to a specific percentile has not yet been implemented.
4. Separate inputs for couples
Age, retirement and max age can now be entered separately for partners. Click on "Add a Partner" in the "Age and Retirement" section to enter partner's info.