In one sentence: DCA reduces timing risk for leveraged ETFs, but it is not a silver bullet.
What Is DCA (Dollar-Cost Averaging)?
DCA (Dollar-Cost Averaging) is a strategy of investing a fixed amount on a set date each month. You naturally buy fewer shares when prices are high and more shares when prices are low.
KRW 500K/month x 12 months = KRW 6M invested per year
When share price is KRW 100K: 5 shares purchased
When share price is KRW 50K: 10 shares purchased (2x)
→ Automatically buy more during dips → average cost lowered
Why DCA Is Advantageous for Leveraged ETFs
- Reduced Timing Pressure — Buying at the top with a leveraged ETF leads to much larger losses than with a 1x ETF. DCA spreads this peak-buying risk over time.
- Buying the Dip in Bear Markets — The more prices drop, the more shares you buy with the same amount. When the rebound comes, shares accumulated at low prices maximize gains.
- Psychological Stability — Mechanically buying on the same date each month reduces emotional mistakes like panic selling or fear-of-missing-out all-in buying.
Why DCA Is Not a Silver Bullet
- The Prolonged Bear Market Trap — 2022 saw NASDAQ decline -33% for the year due to rate hikes. Even with DCA into TQQQ, losses were still in the -40% range by year-end. DCA cannot prevent sustained declines.
- Volatility Decay Cannot Be Avoided — When the market fluctuates up and down, volatility decay within the leveraged ETF accumulates daily regardless of your purchase method.
- Hidden Costs Are Deducted Daily — Effective holding costs of over 10% per year (swap costs, interest expenses, etc.) apply daily to all shares held. Later purchases are no exception.
Actual Simulation Results (KRW 500K/Month x 5 Years, Total KRW 30M)
| Scenario | QQQ (1x) | TQQQ (3x) |
|---|---|---|
| 2016-2021 (Bull Market) | ~KRW 58M | ~KRW 140M |
| 2018-2023 (Mixed) | ~KRW 42M | ~KRW 51M |
| 2020-2025 (Volatile) | ~KRW 45M | ~KRW 53M |
These figures are approximations based on index daily closing prices and may differ from actual ETF results. For precise results, check directly in the DCA Simulator.
Impact of Hidden Costs
The effective holding cost of leveraged ETFs includes swap contract costs and borrowing interest beyond the stated expense ratio. For TQQQ, the effective cost can reach 8-12% per year.
| Category | Without Costs | With Costs |
|---|---|---|
| Final Assets After 5 Years | ~KRW 53M | ~KRW 43M |
| Difference Due to Costs | — | ~15-20% loss |
Because costs are deducted in small daily increments, they are hard to feel. Over 5 years, they can create a 15-20% difference relative to principal. Verify the actual impact with a cost-adjusted simulation.
The detailed cost structure for each ETF can be found on the TQQQ Cost Details page.
Practical DCA Tips
- Don't put all your monthly investment into leverage — Keep leveraged ETF allocation at 20-30%. Diversify the rest into 1x ETFs like QQQ or SPY to reduce volatility.
- Set a Target Return — When returns reach your target, take partial profits on the leveraged ETF and rotate into 1x ETFs or cash.
- Year-End Capital Gains Tax Check — Overseas ETFs are subject to 22% capital gains tax on annual profits exceeding ₩2.5M. Verify your actual after-tax proceeds with the after-tax return calculator.
- Fix Your Purchase Date — Setting a fixed date each month (e.g., the day after payday) eliminates the time spent agonizing over timing and makes it easier to stick to the plan.
Try the Simulation Yourself
Enter your investment amount, time horizon, and preferred ETF to calculate DCA returns based on historical data with costs factored in.