Clarifying QSBS exclusions before your client’s sale closes

Qualified small business stock (QSBS) can produce a substantial federal tax exclusion, but no IRS filing certifies the stock as qualified when it is issued. The taxpayer must substantiate the exclusion when the stock is sold.

This requires the tax professional to reconstruct the original issuance, confirm the corporation continued to meet the applicable requirements and review later transactions for potential qualification problems.

QSBS starts with the stock issuance

Does a corporation file anything with the IRS to certify stock as QSBS?

No. Neither the corporation nor its advisers file a separate certification establishing that stock qualifies under §1202. The shareholder must support the exclusion when reporting the sale.

The corporation should retain contemporaneous issuance, capitalization, financial and tax records. Written representations from its advisers may supplement the file but cannot replace the underlying records.

Can an LLC that elects C corporation status issue QSBS?

Potentially, but the analysis is fact-specific. An eligible entity that elects to be classified as an association taxable as a corporation may be treated as a C corporation for federal tax purposes.

A paper stock certificate is not necessarily required if the interest is treated under applicable law as stock of a C corporation. Whether an LLC interest meets that requirement depends on the election or conversion mechanics.

Review the entity’s federal classification, governing documents, equity rights and the effective date of the election. The shareholder must have acquired an ownership interest treated as stock at original issue while the entity was a qualifying C corporation. When QSBS treatment is part of the plan, a legal conversion followed by a direct stock issuance generally creates a cleaner record.

The QSBS file has to follow the company

How can a shareholder prove the corporation met the gross-assets test?

For a privately held corporation, the shareholder may need to request records directly from the issuer. Useful support includes Schedule L (Form 1120), Balance Sheets per Books, financial statements, capitalization records, stock issuance records and contemporaneous valuation information.

Aggregate gross assets equal cash plus the adjusted bases of the corporation’s other property. Regular depreciation, bonus depreciation and §179 expensing reduce adjusted basis. A special rule treats the basis of contributed property as its fair market value (FMV) immediately after the contribution.

The records must support the applicable gross-assets limit before the stock issuance and immediately afterward. The limit is $50 million for stock issued on or before July 4, 2025, and $75 million for stock issued after that date, with inflation adjustments for taxable years beginning after 2026.

The planned exit can change the QSBS result

Should a seller negotiate for a stock sale?

Yes, when the potential §1202 exclusion is materially valuable. An asset acquisition may give the buyer a basis step-up and reduce exposure to historical liabilities, but it does not allow the shareholder to exclude gain under §1202.

Address the seller’s potential lost exclusion and the buyer’s concerns before the letter of intent fixes the deal structure.

Can QSBS gain be rolled into another qualified small business?

Section 1045 may allow a noncorporate taxpayer to defer gain after selling QSBS held for more than six months. The taxpayer must purchase replacement QSBS during the 60-day period beginning on the sale date.

A stock-for-stock exchange does not automatically qualify because §1045 requires a purchase of replacement stock with cost basis.

Put the QSBS claim through a pre-sale review

Before the transaction closes, confirm:

• When and how the shareholder acquired the stock
• Whether the issuing entity was a domestic C corporation at the time of issue
• Which gross-assets limit applies and whether the records support it
• Whether the corporation satisfied the active-business requirement
• Whether redemptions or other corporate transactions affected qualification
• Whether the holding period has been met or §1045 should be considered
• Whether the proposed exit is an asset sale or stock sale
• Whether the file supports the treatment and calculation reported on Form 8949, Sales and Other Dispositions of Capital Assets

Review the QSBS file before the sale, while missing records or qualification risks can still be addressed.

For a closer look at QSBS qualification and planning, view NATP’s on-demand webinar, Requirements and Benefits of Qualified Small Business Stock.