DCA Calculator — Dollar Cost Averaging Returns & Lump Sum Comparison | Posize

Free DCA calculator with volatility range and lump sum comparison. See how dollar cost averaging grows your portfolio over time with optimistic and pessimistic projections.

$
$
%
%
years

Portfolio Value

$0

Total Invested

$61,000

Total Growth

$31,801

Growth Multiple

1.52×

Effective Return

52.1%

Dollar Cost Averaging

Invested gradually over time

Total Invested: $61k
Final Value: $93k
Total Growth: $32k
Total Return: 52.1%

Lump Sum

Invested all at once

Total Invested: $61k
Final Value: $132k
Total Growth: $71k
Total Return: 115.9%

DCA vs Lump Sum

Dollar Cost Averaging
Invest gradually, smooth out volatility
Buy more shares when market drops
No market timing needed
Generally underperforms Lump Sum in bull markets
Lump Sum
Full growth potential from day one
Requires timing ability
Best when you're confident the market is low
Can be deeply underwater if entry timing is wrong

Common Mistakes

#1: DCA is not set-and-forget

What traders do

Continuing DCA when fundamentals have deteriorated

The consequence

If the company is going bankrupt or the industry is in decline, continuing to DCA only increases losses.

What to do instead

Regularly assess the fundamentals of your investment. Cut losses when the thesis is broken.

#2: Don't stop DCA during a downturn

What traders do

Stopping DCA when the market falls

The consequence

The core advantage of DCA is buying more shares at lower prices. Stopping defeats the purpose.

What to do instead

Stick to your DCA plan. Use market dips to accumulate more shares at better prices.

DCA Formula

Monthly Return

r_monthly = (1 + r_annual)1/12 - 1
r_annual: 8%r_monthly: ~0.64%

Future Value

FV = P×(1+r)12t + C×[((1+r)12t-1)/r]×(1+r)
P: $1,000C: $500/mot: 10 years

Total Growth

Total Growth = FV - Total Invested
FV: 终值Growth: FV - 总投入

Total Growth

Related Tools