šŖ Investing a Bit at a Time
Dollar-cost averaging is the simple practice of investing a fixed amount on a regular schedule, say every payday, no matter what the market is doing. It takes the agonising over timing out of investing, and turns it into a steady habit. For most everyday investors, it is the easiest and most reliable way to keep going through the ups and downs.
How It Works
You Are Already Doing It
If you contribute to KiwiSaver from your pay, you are already dollar-cost averaging. The same idea applies to regular automatic contributions into a fund through a platform.
š§ Why It Helps
No Need to Time the Market
Trying to buy at the bottom and sell at the top is extremely hard, and getting it wrong is costly. Dollar-cost averaging sidesteps the problem entirely by investing steadily regardless of the price.
It Keeps You Going in Downturns
When markets fall, many people stop investing out of fear, which is often the worst time to stop. With a regular plan, your contributions keep buying, and they buy more units at the lower prices, setting you up well for the recovery.
It Builds a Habit
Automating a regular amount makes investing effortless and consistent. You decide once, and it keeps happening, which beats relying on willpower each month.
Use our Investment Calculator to see how regular contributions build over time.
āļø The Limits
It Is Not Always the Highest Return
If markets only ever rose, investing a lump sum immediately would beat spreading it out, because more money would be invested sooner. Dollar-cost averaging trades a little potential return for a lot less stress and risk of bad timing.
Lump Sum vs Drip-Feeding
| Approach | Best When |
|---|---|
| Lump sum now | You have the money and a long timeframe, and can tolerate a near-term drop |
| Dollar-cost averaging | You are investing from income, or want to reduce timing stress |
It Does Not Remove Market Risk
Spreading purchases reduces the risk of buying everything at a peak, but your invested money still rises and falls with the market. Dollar-cost averaging smooths the entry, not the whole journey.
š” Common Mistakes
Mistake 1: Stopping in a Downturn
The whole point is to keep buying when prices fall. Stopping then defeats the strategy and the benefit.
Mistake 2: Thinking It Removes All Risk
It reduces timing risk, not market risk. Your investment still moves with the market.
Mistake 3: Tinkering With the Amount Constantly
Changing your contribution based on headlines undermines the steady habit. Set it and let it run.
Mistake 4: Confusing It With a Guaranteed Win
It is a sensible, low-stress approach, not a guarantee of higher returns than every alternative.
A Simple Approach
See our Investing Basics and Compound Decisions guides. Final word: dollar-cost averaging means investing a set amount regularly, which smooths your purchase price and, more importantly, keeps you invested and calm through the ups and downs. It is not always the absolute highest return, but it is a reliable, low-stress way to build wealth. This is general information, not financial advice.
šÆ Test Your Knowledge
Quiz on Dollar-Cost Averaging (20 Questions)
Frequently Asked Questions
What is dollar-cost averaging?
Investing a fixed amount at regular intervals regardless of price, so you buy more units when prices are low and fewer when high, smoothing your average cost.
Does dollar-cost averaging reduce risk?
It reduces the risk of investing everything at a bad time and removes the need to time the market, though it does not guarantee a profit.
Is KiwiSaver a form of dollar-cost averaging?
Yes. Regular contributions from your pay buy into your fund at varying prices, which is dollar-cost averaging in action.
Is lump-sum investing better than dollar-cost averaging?
Historically lump sums often come out ahead because markets tend to rise, but dollar-cost averaging is easier to stick to and less stressful.
If you've found a bug, or would like to contact us, or learn more about James Graham and Calculate.co.nz.
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