Home Back

Spinoff Calculator

Spinoff Basis Formula:

\[ Basis_{spinoff} = Original\ Basis \times \left( \frac{FMV_{spinoff}}{FMV_{spinoff} + FMV_{parent}} \right) \]

$
$
$

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is the Spinoff Basis Calculation?

The spinoff basis calculation determines the cost basis allocation for a spinoff company's shares based on the fair market values of both the spinoff and parent companies. This is essential for accurate tax reporting when a company spins off a subsidiary.

2. How Does the Calculator Work?

The calculator uses the spinoff basis formula:

\[ Basis_{spinoff} = Original\ Basis \times \left( \frac{FMV_{spinoff}}{FMV_{spinoff} + FMV_{parent}} \right) \]

Where:

Explanation: This formula allocates the original basis proportionally between the parent and spinoff companies based on their relative fair market values at the time of the spinoff.

3. Importance of Spinoff Basis Calculation

Details: Accurate basis calculation is crucial for determining capital gains or losses when selling spinoff shares and for proper tax reporting to regulatory authorities.

4. Using the Calculator

Tips: Enter the original basis amount and the fair market values for both spinoff and parent companies. All values must be positive numbers in USD.

5. Frequently Asked Questions (FAQ)

Q1: When is this calculation used?
A: This calculation is used when a parent company spins off a subsidiary and shareholders receive shares of both companies, requiring basis allocation for tax purposes.

Q2: How are fair market values determined?
A: Fair market values are typically based on the trading prices of the companies' shares immediately after the spinoff is completed.

Q3: What happens to the parent company basis?
A: The remaining basis for the parent company shares is calculated as: Original Basis - Basis Spinoff.

Q4: Are there special tax considerations for spinoffs?
A: Yes, spinoffs must meet specific IRS requirements to qualify as tax-free transactions under Section 355 of the Internal Revenue Code.

Q5: Should I consult a tax professional?
A: Yes, for complex spinoff situations or large investments, it's recommended to consult with a qualified tax professional.

Spinoff Calculator© - All Rights Reserved 2025