📈 Price Per Share Calculator
Calculate what you paid per share for a stock or ETF purchase, including optional commissions or fees.
Exclude commissions and fees; enter those separately below.
Supports fractional shares—enter values like 37.5.
Include brokerage commissions, SEC fees, ADR charges, or transaction taxes.
How to Use This Calculator
Enter Total Investment
Include the amount you spent on shares before any fees or commissions.
Specify Shares Purchased
Input the number of shares—whole or fractional—that you acquired.
Add Transaction Costs
Include optional commissions, transaction taxes, or ADR fees to compute true cost basis.
Review Price per Share
The calculator outputs cost basis and per-share price so you can track performance or plan partial sales.
Formula
Price per Share = (Total Investment + Fees) ÷ Number of Shares
Cost Basis = Principal + Fees
Use this cost basis when calculating capital gains or losses.
Remember to account for dividend reinvestment plans (DRIPs) or brokerage promotions separately—they may have different cost bases.
Full Description
Tracking your price per share is critical for evaluating portfolio performance and calculating capital gains. This calculator simplifies the process by combining invested capital with fees to produce an accurate cost basis, ensuring tax reporting and performance metrics are precise.
Use it for stocks, ETFs, mutual funds, or employee stock purchase plan (ESPP) shares. Just update the fee field to mirror your transaction costs.
Why It’s Useful
- Track cost basis for capital gains tax reporting.
- Evaluate dollar-cost averaging effectiveness over multiple purchases.
- Plan exit strategies by comparing current price to your cost per share.
- Document fees when reviewing brokerage statements or negotiating rates.
Frequently Asked Questions
How do I handle multiple purchases?
Sum the total invested across all lots, add all fees, and divide by total shares held. Repeat for each new purchase to maintain a running cost basis.
Does this work for fractional shares?
Yes—enter fractional values (e.g., 12.345 shares). The calculator returns a precise per-share price.
Should I include taxes?
Include transaction taxes (like stamp duty) in the fee field. Income taxes on dividends or capital gains are handled separately when selling.
What about dividend reinvestments?
Reinvested dividends generally add to cost basis. Add each reinvested amount and shares to your totals or track them as separate lots.