1. Enter the after-tax balance
Use the amount you expect to have available after vesting-related taxes and any immediate deductions.
2. Set a monthly draw
Enter the amount you want to withdraw at the end of each modeled month.
3. Choose a return assumption
Use a yearly return for whatever asset mix you expect the remaining balance to hold.
4. Set the horizon
Choose the number of months you want to evaluate.
5. Compare the ending balance and support
A positive ending balance means the plan survives the selected horizon under the assumption; zero means it is depleted earlier or exactly by the end.