💹 Save or Invest Calculator
You have extra cash. Should you put it in savings or invest it? Let's compare.
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projected growth comparison
Adjust the inputs above and click calculate.
Last updated: June 18, 2026
How this calculator works: It projects the future value of your lump sum (plus optional monthly contributions) using compound interest formulas for both savings accounts (APY) and investments (average annual return). Savings rates are typically lower but guaranteed (FDIC insured up to $250K). Investment returns vary — the S&P 500 has historically averaged ~8-10% annually before inflation but past performance does not guarantee future results. This is for reference only. Consult a financial advisor for personalized advice.
How this calculator works: It projects the future value of your lump sum (plus optional monthly contributions) using compound interest formulas for both savings accounts (APY) and investments (average annual return). Savings rates are typically lower but guaranteed (FDIC insured up to $250K). Investment returns vary — the S&P 500 has historically averaged ~8-10% annually before inflation but past performance does not guarantee future results. This is for reference only. Consult a financial advisor for personalized advice.