Investment & Compound Interest Calculator
Use this free investment calculator to project your future portfolio value. Model compound interest, recurring contributions, and the impact of annual tax drag on taxable vs tax-advantaged accounts.
Projected Portfolio Net Value
$295,892
Effective CAGR (Net): 18.46%
Total Contributions$130,000
Investment Gains+$165,892
Taxes Paid$29,275
Tax Drag Cost$49,850 (14.4%)
Growth Parameters
Contributions Scheduler
Tax Drag Settings
Tax Efficiency Comparison
Projections & Actions
Educational GuideIn a Tax-Free (Roth) account, growth compounds fully with zero taxes paid on dividends or withdrawals. A Tax-Deferred (Traditional IRA/401k) account compounds at the full rate but faces tax on all earnings at final withdrawal. A Taxable Account loses compounding power because dividends and capital gains are taxed annually, causing a compound tax drag.