What is ‘cash in lieu of fractional shares’ on my tax return?

Cash in lieu of fractional shares is taxable income you receive when a brokerage pays you cash instead of issuing a fraction of a share, most commonly after a stock split, merger, acquisition, or dividend reinvestment.

For tax purposes, IRS treats this cash payment as proceeds from the sale of the fractional share, resulting in a capital gain or loss.

1) Why you received cash in lieu

Brokerages typically do not issue fractional shares in certain corporate actions. Instead, they:

• Aggregate fractional entitlements
• Sell the fractions on the market
• Distribute cash to shareholders

Common events:

• Stock splits
• Mergers or acquisitions
• Spin-offs
• Dividend reinvestment plans (DRIPs)

2) How the IRS taxes cash in lieu

The IRS treats the payment as if you:

1. Owned a fractional share, and
2. Sold it for cash

That means:

• It is not ordinary income
• It is capital gain or capital loss
• Holding period determines whether it’s short-term or long-term

3) How it appears on your tax forms

Form 1099-B (most common)

Your broker will usually report:

• Proceeds from the fractional share sale
• Cost basis (sometimes reported)
• Holding period

You must report it even if the amount is small.

4) Where to report it on your tax return

Step 1: Form 8949

• Report the transaction as a sale of a capital asset
• Use:
  
  • Part I for short-term
  • Part II for long-term

Step 2: Schedule D (Form 1040)

• Totals from Form 8949 flow to Schedule D
• Net gain or loss is included in your capital gains calculation

5) How to calculate the gain or loss

Capital gain (or loss) = Cash received − Allocated basis of the fractional share

Your broker usually calculates and reports this, but you remain responsible for accuracy.

6) Common misconceptions

• It is not a dividend
• It is not tax-free just because the amount is small
• It should not be reported as “Other Income”

Even amounts under $1 are technically taxable, though rounding rules apply.

7) If you didn’t receive a 1099-B

You are still required to report the income if you received cash in lieu.

Digital Assets (New for 2026)

If your "cash in lieu" came from a corporate action involving Crypto or Tokenized Stocks, keep an eye out for the new Form 1099-DA (Digital Assets). Starting this year, brokers are required to report digital asset dispositions on this specific form instead of the standard 1099-B in many cases

Summary

• Cash in lieu of fractional shares is taxable capital gain or loss
• Treated as a sale of a fractional share
• Report on Form 8949 → Schedule D
• Usually reported on Form 1099-B
• Holding period determines tax rate

Sources:

• IRC §61(a) – Gross income definition
• IRC §1011 & §1012 – Basis rules
• IRS Pub 551 – Basis of Assets
• IRS Instructions for Form 8949
• IRS Instructions for Schedule D
• IRC §6045 – Broker reporting requirements
• IRS Instructions for Form 1099-B
• IRC §1222 – Capital gain definitions
• IRS Pub 550 – Investment Income and Expenses