Dollar Cost Averaging Calculator
If you are using this because you are just getting started, connect it with how to start investing, how to automate your investments in Canada, and the broader investment calculator. For the actual fund choice, most beginners end up using one of the best all-in-one ETFs in Canada, and if you want the math behind why regular investing works, review what compound interest is.
How Dollar Cost Averaging Works
Instead of investing a large sum at once, you invest smaller amounts regularly:
| Strategy | Action |
|---|---|
| Lump sum | Invest $60,000 today |
| DCA | Invest $500/month for 10 years |
DCA Example
Investing $500/month with varying prices:
| Month | Price/Share | Shares Bought | Total Shares | Total Value |
|---|---|---|---|---|
| 1 | $50 | 10 | 10 | $500 |
| 2 | $40 | 12.5 | 22.5 | $900 |
| 3 | $45 | 11.1 | 33.6 | $1,512 |
| 4 | $55 | 9.1 | 42.7 | $2,349 |
| 5 | $50 | 10 | 52.7 | $2,635 |
After 5 months: $2,500 invested → 52.7 shares → $2,635 value
Average price paid: $2,500 ÷ 52.7 = $47.44/share
DCA automatically buys more when prices are low (Month 2: 12.5 shares at $40) and less when high (Month 4: 9.1 shares at $55).
DCA vs Lump Sum Investing
Historical Analysis
Research shows lump sum beats DCA about 2/3 of the time because:
- Markets trend upward over time
- Lump sum gets more money working sooner
- DCA keeps some money on the sidelines
| Scenario | Lump Sum | DCA |
|---|---|---|
| Markets rise steadily | ✓ Better | Worse |
| Markets fall then rise | Worse | ✓ Better |
| Markets fall steadily | Less loss | ✓ Less loss |
| Volatile, ending higher | ✓ Usually better | Sometimes better |
Why DCA Is Still Popular
| Benefit | Explanation |
|---|---|
| Psychological | Easier than investing everything at once |
| Risk reduction | Spreads market timing risk |
| Practical | Matches income (monthly paycheck) |
| Discipline | Automatic = consistent |
Most people invest via DCA naturally because they invest from each paycheck.
DCA Investment Growth Examples
Assuming 7% annual return:
$250/month
| Years | Contributions | Final Value | Growth |
|---|---|---|---|
| 5 | $15,000 | $17,900 | $2,900 |
| 10 | $30,000 | $43,400 | $13,400 |
| 20 | $60,000 | $130,000 | $70,000 |
| 30 | $90,000 | $295,000 | $205,000 |
$500/month
| Years | Contributions | Final Value | Growth |
|---|---|---|---|
| 5 | $30,000 | $35,800 | $5,800 |
| 10 | $60,000 | $86,800 | $26,800 |
| 20 | $120,000 | $260,000 | $140,000 |
| 30 | $180,000 | $590,000 | $410,000 |
$1,000/month
| Years | Contributions | Final Value | Growth |
|---|---|---|---|
| 5 | $60,000 | $71,600 | $11,600 |
| 10 | $120,000 | $173,600 | $53,600 |
| 20 | $240,000 | $520,000 | $280,000 |
| 30 | $360,000 | $1,180,000 | $820,000 |
When to Use Each Strategy
Use DCA When:
- Investing from regular income
- You have a large sum but fear market timing
- Markets feel overvalued (peace of mind)
- You’re new to investing
Use Lump Sum When:
- You receive a windfall (inheritance, bonus)
- You have a long time horizon (10+ years)
- You can handle short-term volatility
- Historical odds favor it (~67%)
Hybrid Approach
Invest some immediately, DCA the rest:
| Windfall | Lump Sum | DCA | Timeline |
|---|---|---|---|
| $100,000 | $50,000 now | $4,167/month | 12 months |
| $50,000 | $25,000 now | $2,083/month | 12 months |
This captures some upside while managing risk.
Setting Up Automatic DCA
Step 1: Choose Your Amount
Based on your budget:
| Monthly Income | Suggested DCA | % of Income |
|---|---|---|
| $4,000 | $400-800 | 10-20% |
| $6,000 | $600-1,200 | 10-20% |
| $8,000 | $800-1,600 | 10-20% |
Step 2: Choose Your Frequency
| Frequency | Pros | Cons |
|---|---|---|
| Weekly | More purchases, smoother | More transactions |
| Biweekly | Matches paychecks | 26 purchases/year |
| Monthly | Simple, common | Fewer purchases |
Step 3: Automate It
Most brokerages offer pre-authorized contributions (PAC):
- Set contribution amount
- Set frequency
- Choose investment (e.g., XEQT, VEQT)
- Funds automatically purchased
Automation removes emotion — you won’t forget or second-guess.
DCA During Market Crashes
DCA shines during volatility:
| Month | Market | Price | $500 Buys |
|---|---|---|---|
| Jan | Normal | $100 | 5 shares |
| Feb | Crash | $70 | 7.1 shares |
| Mar | Bottom | $60 | 8.3 shares |
| Apr | Recovery | $80 | 6.25 shares |
| May | Normal | $100 | 5 shares |
In 5 months: $2,500 invested → 31.65 shares → $3,165 at $100/share
By buying through the crash, you lowered your average cost and came out ahead.
Common DCA Mistakes
| Mistake | Problem | Solution |
|---|---|---|
| Stopping during crash | Miss low prices | Automate and ignore |
| Waiting for “dip” | Timing the market | Invest consistently |
| Too much cash reserve | Money not working | Invest each paycheck |
| Changing amounts often | Inconsistent | Set and forget |