Question 1

How do I calculate investment growth over time?

Accepted Answer

Investment growth uses compound interest: FV = PV(1 + r)^t + PMT × [((1 + r)^t − 1) / r], where PV is the initial amount, r is the periodic rate, t is the number of periods, and PMT is the regular contribution. This calculator handles all compounding frequencies automatically.

Question 2

What is dollar-cost averaging (DCA)?

Accepted Answer

Dollar-cost averaging means investing a fixed amount at regular intervals regardless of market conditions. When prices are low you buy more units; when prices are high you buy fewer. Over time this reduces average cost per share and dampens the impact of market volatility.

Question 3

How much should I invest each month?

Accepted Answer

A common guideline is to invest 15–20% of gross income. Even $100/month invested consistently at 8% for 30 years grows to over $135,000. Start with whatever you can afford and increase contributions by 1% per year — the habit matters more than the starting amount.

Question 4

What annual return should I expect on investments?

Accepted Answer

Expected returns vary by asset class: stocks 8–10% historically, bonds 3–5%, real estate 8–12%, savings accounts 1–4%. A diversified 60/40 portfolio (stocks/bonds) has historically returned 6–8% annually. Always use conservative estimates for long-term planning.

Question 5

When should I start investing?

Accepted Answer

Now — the earlier the better. A 25-year-old investing $5,000/year at 7% will have ≈$1.1 million at 65. Starting at 35 with identical inputs yields ≈$540,000 — about half, despite investing for only 10 fewer years. Time in the market is your most powerful asset.

Investment Calculator

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Investment Calculator

Investment Details

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