Calculate your investment growth with initial investment, monthly contributions, and compound returns
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Historically, the S&P 500 has returned about 10% per year on average before inflation (7% after inflation). A good return depends on your risk tolerance: conservative investments like bonds typically yield 3-5%, balanced portfolios 6-8%, and aggressive stock portfolios may return 8-12% annually over long periods. However, past performance doesn't guarantee future results, and individual years can vary widely from -30% to +30%.
Dollar-cost averaging means investing a fixed amount regularly (e.g., $500/month) regardless of market conditions. When prices are high, you buy fewer shares; when low, you buy more. This reduces the impact of volatility and removes the need to time the market. Studies show DCA often outperforms lump-sum investing during volatile periods.
ROI is total percentage gain: (Final - Invested) / Invested × 100. Annualized return is the yearly equivalent. A 50% ROI over 5 years equals about 8.45% annualized. Always use annualized return when comparing investments of different durations.
A common guideline is 15-20% of gross income. Start with whatever you can, even $50-100/month, and increase by 1% each year. The key is consistency — investing $200/month for 30 years at 7% grows to about $243,000 from only $72,000 contributed.
Short-term capital gains (held <1 year) are taxed as ordinary income (10-37%). Long-term gains (held >1 year) are taxed at 0%, 15%, or 20%. Tax-advantaged accounts like 401(k)s and IRAs can defer or eliminate these taxes.
Statistically, lump-sum beats DCA about 66% of the time. But DCA reduces regret if markets drop soon after investing. If a 20% drop would make you panic-sell, use DCA. Otherwise, lump-sum is mathematically superior.
A 7% nominal return with 3% inflation means only 4% real return. Stocks historically outpace inflation, while cash often loses ground. Use our Inflation Calculator alongside this one to see real purchasing power.
About 10.26% per year from 1957 to 2024 including dividends. The best year was +37.2% (1975), worst was -37.0% (2008). Over any 20-year period, it has never lost money.