Frequently Asked Questions
How accurate are these financial estimates?
These calculations use standard financial formulas and are mathematically accurate given your inputs. Real-world results depend on factors the calculator can't predict: market returns, tax law changes, spending behavior, and unexpected expenses. Use these as planning tools to understand relationships and trade-offs, not as guaranteed outcomes.
Should I consult a financial advisor?
For major financial decisions — retirement planning, large investments, debt restructuring, estate planning — yes. A fee-only fiduciary advisor can account for your complete financial picture, tax situation, and risk tolerance. These calculators are excellent for building understanding and running scenarios, but aren't a substitute for personalized advice.
How do taxes affect this calculation?
This calculator uses pre-tax inputs unless otherwise noted. In reality, investment returns, income, and withdrawals are all subject to federal, state, and local taxes that significantly change your net result. Run your numbers through a tax-aware calculator or consult a tax professional to understand after-tax outcomes.
What assumptions does this calculator make?
Financial calculators typically assume constant rates of return, regular payment intervals, and no changes to contribution amounts over time. Real scenarios involve variable returns, irregular contributions, and changing circumstances. The results are most useful for comparing relative outcomes (e.g., paying off debt vs. investing) rather than predicting exact dollar amounts.