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DCA vs. lump sum: which strategy works better?
February 5, 2026 5 min read
It is one of the most common questions: if you have a lump sum saved, is it better to invest it all at once (lump sum) or spread it across periodic contributions (DCA)?
What the evidence says
Classic studies (such as Vanguard's) show that in about 2 out of 3 cases, lump-sum investing beats DCA. The reason: markets rise more often than they fall, so the sooner your money is invested, the more compound interest works.
So why is DCA recommended so much?
- Managing emotional risk: if you invest everything right before a crash, the blow can push you to sell. DCA reduces that regret.
- It is natural when you invest your salary: most of us don't have a large sum at once, but a monthly surplus.
A practical rule
- Monthly savings → invest as you earn (natural DCA).
- Large sum and you tolerate volatility → statistically, all at once usually wins.
- That sum keeps you up at night → spread it over 6-12 months.
Try it yourself: use the compound interest calculator to simulate your case with your own numbers, see the charts and find your break-even point.
Conclusion
Mathematically, investing sooner is usually better. But the best strategy is the one you can stick to without emotional mistakes. Consistency beats perfection.