Stock Average Cost
Calculate stock average cost using Purchase 1 total cost, Purchase 1 shares, Purchase 2 total cost, Purchase 2 shares. See the method, result interpretation, practical checks and related calculators in one place.
Formula / method
Total cost ÷ total shares.
How to use
Use the rate, time period, fees and cash-flow assumptions that match the real quote or account you are evaluating.
What this calculator answers
The Stock Average Cost uses Purchase 1 total cost, Purchase 1 shares, Purchase 2 total cost, Purchase 2 shares to calculate the requested result. The core method is Total cost ÷ total shares.. This makes the assumptions visible so you can check whether the inputs match your situation.
How to get a useful result
Use the rate, time period, fees and cash-flow assumptions that match the real quote or account you are evaluating.
How to interpret it
Treat the result as an estimate. Taxes, lender rules, compounding conventions, fees and timing can change the real amount.
Before relying on the number
Recheck unusual inputs, confirm units and compare the result with any official quote, statement, specification or rule that applies to the real decision. Small changes in rates, time periods or measurements can materially change some results.