Markets··4 min read
Lump Sum or Dollar-Cost Averaging? What the Data Says
If you have cash to invest, waiting usually costs you. But the 'wrong' answer is sometimes the right one for your nerves.
By Money Pulse Editors
You just got a bonus, an inheritance, or finally sold the old car. Do you invest it all today, or drip it in over a year? The math has a clear favourite. Your stomach may not.
The numbers favour lump sum
Because markets rise more often than they fall, money invested earlier tends to earn more. Vanguard's well-known study found that investing a lump sum immediately beat spreading it over 12 months roughly two-thirds of the time across U.S., U.K. and Australian markets, by an average of a couple of percentage points.
Why people still choose DCA
Dollar-cost averaging trades a bit of expected return for a lot less regret. If you invest everything on Monday and the market drops 15% by Friday, will you stay the course? For many people the honest answer is no, and selling at the bottom costs far more than a slower start.
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- Choose lump sum if you're investing for 10+ years and can genuinely ignore a bad first year.
- Choose DCA if a sharp early loss would make you abandon the plan. Spread it over 6 to 12 months, on autopilot, and stop watching.
- Either way, the worst option is 'waiting for a better entry point'. That's just DCA with extra anxiety and no schedule.
This article is for information and education only and is not financial, tax or legal advice. Figures are illustrative; past performance does not guarantee future results. Some links are affiliate links. See our disclosure.
