Invest Consistently, Remove Emotion

Dollar-cost averaging (DCA) is a simple strategy: invest the same amount of money on a regular schedule, regardless of what the market is doing.

How It Works

Instead of investing $12,000 all at once, you invest $1,000 every month for 12 months. Same total investment, different timing.

Example

Let's say you're buying shares of an S&P 500 index fund:

• Month 1: Share price = $100. You buy 10 shares with your $1,000
• Month 2: Market drops. Share price = $80. You buy 12.5 shares
• Month 3: Share price = $90. You buy 11.1 shares
• Month 4: Share price = $110. You buy 9.1 shares

After 4 months, you invested $4,000 and own 42.7 shares at an average cost of $93.68/share.

If you'd invested all $4,000 in month 1 at $100/share, you'd only have 40 shares.

Why It Works

1. Removes Emotion

You invest whether the market is up or down. No trying to "time the market" (which almost nobody can do successfully).

2. Buys More When Prices Are Low

When the market drops, your fixed dollar amount buys more shares. This is good! You're getting stocks on sale.

3. Reduces Regret

If you invest everything right before a crash, you'll kick yourself. DCA spreads out your entry points.

4. Makes Investing Automatic

Set it and forget it. No decisions needed.

5. Builds the Habit

Investing becomes routine, like paying rent.

When DCA Works Best

• You're just starting out (investing your first $50,000)
• You're nervous about market timing
• You receive money gradually (paycheck to paycheck)
• You want to remove emotion from investing
• The market feels "too high" and you're scared to invest a lump sum

When Lump Sum Might Be Better

Mathematically, investing a windfall all at once beats DCA about 2/3 of the time, because markets trend upward. If you inherit $100,000 and have the stomach for it, investing immediately historically wins.

But if that market volatility would keep you up at night or cause you to panic-sell during a dip, DCA over 6-12 months might help you sleep better. Psychology matters.

How to Implement DCA

1. Automate It

Set up automatic transfers from checking to your investment account every payday.

2. Pick a Simple Investment

S&P 500 index fund or total stock market fund. Don't overthink it.

3. Invest Consistently

$200 every two weeks, $500 every month, whatever you can afford. The amount matters less than the consistency.

4. Ignore the Noise

Markets will crash. News will be scary. Keep investing. The best returns come from buying when everyone else is panicking.

5. Increase Contributions When Possible

Got a raise? Increase your automatic investment by $100/month.

Real Example

Someone who invested $500/month in an S&P 500 index fund for the past 20 years (including through 2008 crash and 2020 pandemic) would have invested $120,000 and now have approximately $380,000. They never tried to time the market, just kept buying.

Bottom Line

DCA isn't the mathematically optimal strategy, but it's the psychologically optimal strategy. It removes fear, builds discipline, and keeps you invested through ups and downs. Perfect is the enemy of good - DCA gets people actually investing instead of waiting for the "right time."

Start your DCA strategy by calculating your goals with our Compound Interest Calculator!