Calculate your true average cost per share for stocks and equities
The Average Cost Calculator helps you determine your cost basis for stocks by calculating the weighted average price of all your share purchases.
Formula: Average Price = Total Cost ÷ Total Shares
This is essential for tax purposes as you only pay capital gains tax on the profit (selling price minus average cost per share).
Buy 10 shares at $100 = $1,000
Buy 20 shares at $80 = $1,600
Average Cost: $2,600 ÷ 30 shares = $86.67 per share