How this calculator works
This tool uses the 4% rule (or whatever safe withdrawal rate you choose) to figure out your target nest egg, then works backward to tell you either the monthly savings you need or the time it will take, accounting for compound growth on what you already have invested.
Want to avoid the most common planning mistakes? Read common retirement planning mistakes.
Before you invest for the long term, make sure a short-term setback wouldn't derail the plan. Try our emergency fund calculator to size your safety net first.