Začínáme s investováním
Lump-Sum Investment or Regular Monthly Deposits?
Key takeaways
- With a large lump sum, a one-time entry (lump sum) has historically earned more more often, because markets usually rise.
- Regular deposits (DCA) reduce the risk of bad timing and are psychologically easier to handle.
- Money from your paycheck is naturally invested regularly — the way your income arrives.
- Psychology matters too: the strategy you can stick to beats the theoretically optimal one.
- A combination often makes sense: part invested at once, part spread over time.
This question has two forms depending on your situation: "I have a larger lump sum — should I invest it all at once?" and "I invest from my paycheck — how often?". The answer differs and both approaches have their place.
When you have a larger lump sum
You received a bonus, sold a property, or inherited money. What to do — all at once or in instalments? Historical data are clear: a one-time entry (lump sum) earns more on average than spreading it into monthly deposits. The reason is simple — markets usually go up, so sitting on the sidelines costs you returns. Roughly two-thirds of the time historically, lump sum would have beaten dollar-cost averaging.
Why spread it out anyway
Averages are not everything. Regular deposits (DCA) protect you from the worst scenario — putting everything in just before a large downturn. And most importantly: most people cannot psychologically handle putting in their entire sum and immediately seeing the market drop 20%. Spreading over time gives up a little return but costs less in nerves and reduces the risk of a catastrophic mistake. More detail in the article on DCA.
When you invest from your paycheck
Here the question almost disappears. Money arrives every month, so you naturally invest regularly — you set up a standing order right after payday and you are done. There is nothing to spread or time; you invest as your income arrives. For most people this is the primary mode.
Practical compromise
- Small to medium sum → invest at once so time starts working immediately.
- Large sum you would nervously watch → spread it over, say, 3–6 months.
- Ongoing income → regular monthly deposit, automatically.
To see how different deposit scenarios play out, try the growth projection — you will see that more important than "at once vs. in parts" is simply starting and staying with the plan.
FAQ
Does a lump-sum investment or regular deposits earn more?
With a large lump sum, a one-time entry historically earns more more often, because markets usually go up and you lose return by waiting. But regular deposits reduce the risk of bad timing and are psychologically easier to manage.
I have a larger inheritance — should I invest it all at once?
Statistically it tends to win on average, but it depends on your nerves. If you could not handle a quick drawdown, spread the sum over, say, 3–6 months. You reduce the risk of entering at the top at the cost of slightly lower expected return.
How should I invest money from my paycheck?
Regularly. Set up a standing order right after payday and invest the same amount every month into a broad ETF. That removes timing and decision-making and turns investing into an automatic habit — that is the primary mode for most people.
What matters more than the choice between them?
Starting at all and sticking to the plan. The difference between lump sum and regular entry is smaller than the difference between investing and delaying the start by years. Time in the market matters more than perfect timing of entry.