Home Back

How To Calculate Cost Basis Of Stock

Cost Basis Formula:

\[ \text{Cost Basis} = \frac{\text{Total Cost}}{\text{Number of Shares}} \]

$
shares

Unit Converter ▲

Unit Converter ▼

From: To:

1. What Is Cost Basis Of Stock?

Cost basis represents the original value of an asset for tax purposes, usually the purchase price adjusted for stock splits, dividends, and return of capital distributions. It is used to calculate capital gains or losses when the asset is sold.

2. How Does The Calculator Work?

The calculator uses the cost basis formula:

\[ \text{Cost Basis} = \frac{\text{Total Cost}}{\text{Number of Shares}} \]

Where:

Explanation: This calculation provides the average cost per share, which is essential for determining capital gains or losses when selling portions of your investment.

3. Importance Of Cost Basis Calculation

Details: Accurate cost basis calculation is crucial for tax reporting, investment performance analysis, and making informed selling decisions. It helps determine whether you have a capital gain or loss for tax purposes.

4. Using The Calculator

Tips: Enter the total cost of your stock purchase (including any commissions or fees) and the number of shares purchased. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is included in total cost?
A: Total cost should include the purchase price plus any commissions, fees, or transaction costs associated with buying the stock.

Q2: How does cost basis affect taxes?
A: Cost basis is subtracted from the selling price to determine capital gains (if selling price > cost basis) or capital losses (if selling price < cost basis).

Q3: What if I bought shares at different prices?
A: For multiple purchases, you can calculate average cost basis (as shown here) or use specific identification methods like FIFO or LIFO for tax purposes.

Q4: Does cost basis change over time?
A: Yes, cost basis can be adjusted for stock splits, dividends reinvested, or return of capital distributions.

Q5: Why is accurate cost basis important?
A: Accurate cost basis ensures proper tax reporting, helps track investment performance, and prevents overpaying taxes on capital gains.

How To Calculate Cost Basis Of Stock© - All Rights Reserved 2025