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DCA Investing Strategy: How to Average Your Buys as a Beginner

DCA means buying an asset for the same amount at regular intervals, whatever the price. We look at how to set up such a plan (with Kazakhstan as a worked example), run the numbers and see where the strategy breaks down.

Aspiro Editorial · 28.10.2026

Up to date as of October 2026. Broker fees, exchange listings and tax rules change — check your broker's website, the exchange and your local tax authority (in Kazakhstan, the State Revenue Committee) before you trade.

What is DCA

DCA (dollar-cost averaging) means averaging out your purchase price. You decide in advance — say, $100 on the 5th of every month into an S&P 500 index fund — and you buy no matter what the price is doing. When the price is high, the same money buys fewer fund units; when it is low, it buys more. There is a short definition in our glossary: DCA. Here we look at how to use it in practice.

The real value of DCA is not the maths but the discipline. You don't have to guess the "perfect moment", so you are less likely to buy in a frenzy and sell in a panic.

A worked example

Say you put $100 a month into a hypothetical fund. Over six months the unit price moved like this (illustrative numbers):

Average purchase price: $600 / 14.08 = $42.6. The price is back at $50, so the portfolio is worth 14.08 × $50 ≈ $704. If you had put all $600 in during month one, you would have 12 units — still worth $600. You can model your own plan in the DCA calculator, and work out the average price of buys you have already made in the average price calculator.

The flip side: if the price had only gone up every month, a single purchase in month one would have done better. DCA doesn't boost returns — it smooths out your entry point.

How to build a DCA plan

• Emergency fund first. Regular buying makes sense once you have 3–6 months of expenses set aside. Otherwise the first unexpected bill will force you to sell at a loss.
• Pick one or two broad funds. For example, an S&P 500 ETF — ways to buy one from Kazakhstan are covered in S&P 500 ETFs from Kazakhstan.
• Pick a broker that suits small amounts. Look not only at the percentage fee but also at any fixed fee per order. For a comparison (Kazakhstan example), see how to choose a broker in Kazakhstan.
• Fix the amount and the date. Write down your rule: "$100 into fund X on the 5th of every month". An automatic transfer from your card to your brokerage account makes life easier.
• Review once a year. No more often. Check the weights in your portfolio and rebalance if needed.

How much fees eat

With small amounts, fees matter a lot. Here is an example from Kazakhstan. Under the official Freedom Finance Global fee schedule (approved 30 April 2026), the "Investor" plan for the US market costs 0.5% + $0.012 per share + $1.2 per order, while on KASE and AIX it is 0.085%. Halyk Invest charges 0.03% on KASE and AIX, with a minimum of 30 tenge (from 1 July 2026).

The takeaway: if your broker charges a fixed fee per order, buying $100 every month gets expensive. Your options are to buy less often but in bigger chunks, or to buy on a local exchange (funds listed in the KASE Global sector can have a wider spread — the gap between the buy and sell price). Also factor in the bank's spread when you buy dollars and any fee for funding your account.

Common mistakes

• Stopping during a drawdown. That is exactly when DCA buys at the lowest prices. If you abandon the plan in a fall, you get the worst of both worlds.
• Averaging down on a single falling stock. That is no longer DCA — it's "catching a falling knife". The company may never recover.
• Switching funds every couple of months to chase whatever has gone up the most lately.
• Investing money you will need within a year. DCA is built for a horizon of 5 years or more.
• Ignoring fees. 1.7% on every purchase is a noticeable chunk of a typical year's expected result.

What you are risking

DCA does not protect you from a long market decline: if the index falls for several years, your portfolio will be in the red however much you average. On top of that there is currency risk (you invest in dollars but spend in your local currency — tenge in the Kazakhstan example), broker risk (in Kazakhstan, for example, brokerage assets are not insured by the KDIF the way bank deposits are) and tax: in Kazakhstan, income from securities outside the official KASE and AIX lists has to be declared by you. Details for Kazakhstan are in tax on investments in Kazakhstan. How a whole portfolio fits together is covered in the free Aspiro Academy (in Russian) lesson "How a portfolio is built".

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