Free calculator
Average Cost Calculator
Work out your new average purchase price after making an additional purchase of an investment you already own.
Your details
Estimated results
Previous investment cost
MX$46,050.00
Original purchase price multiplied by original quantity.
Additional cost
MX$35,535.00
Additional purchase price multiplied by additional quantity, plus any fees.
Total quantity
850
New average cost
MX$95.98
Total cost across both purchases, divided by total quantity.
Break-even price
MX$95.98
The price per unit at which this position would neither gain nor lose value, before additional fees or taxes.
How this is calculated
Formulas used
- Previous cost = purchase price × quantity
- Additional cost = additional price × additional quantity + fees
- Total quantity = quantity + additional quantity
- New average cost = (previous cost + additional cost) ÷ total quantity
Example
You bought 500 shares at MX$92.10, then bought 350 more at MX$101.40 with MX$45 in fees. Your previous cost is MX$46,050, your additional cost is MX$35,535, and your new average cost across 850 shares is approximately MX$95.98.
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