What if?

  1. The question

    What if I waited until 2022?

    $500/week into the S&P 500 starting in 2022 versus the same habit from 2015. Time in the market on real weekly data — not ages 18 vs 35.

    Quick answer

    If you invested $500/week into S&P 500 from 2023-01-06 through 2026-10-16, total contributions would have been about $99,000 and a blind DCA portfolio would be worth about $142,847 (+44.3%) on this historical path — before fees and taxes.

  2. Assumptions

    What this page actually assumes

    • We do not have a lifetime from age 18. “Waited” means started in 2022 instead of 2015.
    • $500/week, S&P 500, held through the last Friday.
    • 2022 is a hostile start (bear market). That is intentional.
    • The 2015 comparison keeps the same weekly dollar amount, so it also contributed through 2022 — it just had a seven-year head start.

  3. Historical data

    2023-01-06 → 2026-10-16

    2022–present is a short sample. 2015–present is the full published window. Both are the same index, not a 7% illustration.

    Series: S&P 500 and S&P 500. Same contribution calendar. No data before 2015.

  4. Interactive simulation

    Change the habit, stay on the real curve

    Amount
    Start year

    $500/week · S&P 500

    2023-01-06 → 2026-10-16 · $500/week · S&P 500

    Contributed$99,000
    Held to the last date$142,847
    Return+44.3%
    S&P 5002023-01-06 → 2026-10-16 · $500/week
     +$43,847 vs cash inEnded $142,847 on $99,000 contributed
    Portfolio (DCA)Cash contributed
    $0$37.1k$74.3k$111k$149k2023-012023-102024-072025-042026-012026-10

    $500/week · S&P 500

    The same $500/week starting in 2015

    2015-01-02 → 2026-10-16 · $500/week · S&P 500

    Contributed$308,000
    Held to the last date$593,507
    Return+92.7%
    S&P 5002015-01-02 → 2026-10-16 · $500/week
     +$285,507 vs cash inEnded $593,507 on $308,000 contributed
    Portfolio (DCA)Cash contributed
    $0$154k$309k$463k$617k2015-012017-052019-102022-012024-052026-10

  5. Results

    What the numbers say

    Waiting usually shows up as less capital in and less compounding. Starting in a down year can still look fine a few years later — which is why the 2015 line is sitting next to it, not a lecture.

    The chart marks portfolio value over time for fixed-amount DCA and (when shown) a same-capital lump sum. Contributed cash rises in steps; ending value is mark-to-market on the last date (2026-10-16).

  6. What changes if…

    How did we calculate this?

    • Window: real market history from our published backtest bundle, typically from 2015 through the latest Friday in the series — we do not invent older decades.
    • Contribution calendar: the engine runs on a weekly Friday grid. A “monthly” habit is converted to an equivalent weekly cash rate ((amount × 12) / 52) so the same engine can compare habits.
    • Purchase timing: each period’s contribution is applied on that week’s bar in the series (close-based weekly path), not an intraday open fill.
    • Assets: S&P 500, Bitcoin, and other series we publish — USD only. No FX conversion.
    • Shares: fractional units are assumed. No brokerage commissions, bid–ask, or slippage are modeled.
    • Dividends / income: returns follow the wealth path in the backtest bundle for that asset (not a fixed 7–10% toy rate).
    • Lump sum (when shown): the same total cash as the DCA habit, invested on day one of the window, then marked to the same path.

    Frequently asked questions

    What if I waited until 2022?
    From 2023-01-06 to 2026-10-16, $500/week into S&P 500 contributed about $99,000 and a blind DCA habit ended near $142,847 (+44.3%).
    Are these numbers a forecast?
    No. They replay published market history from 2015 onward. Future returns can look nothing like this window.
    What assumptions matter most?
    Start date, contribution size, weekly vs monthly cadence, and whether you held through drawdowns. Fees and taxes are not modeled.
    Can I change the amount or start year?
    Yes — use the chips on this page when available, or open a related what-if / calculator with a different habit.
    How is this different from a 7% compound calculator?
    Fixed-rate toys assume a smooth return. We mark contributions to a real index/crypto path, including crashes in the window.
    What if I had traded instead?
    See The Boring Alternative for story-shaped counterfactuals (options losses, round-trips), then run the same dollars through an index DCA calculator.

    Run a related reality check

    Same contribution schedule, different assets — or a fixed-rate planning calculator when you want an illustration instead of history.

    S&P 500 vs BitcoinCompound interest →Boring Alternative →