Can an S Corporation Claim the R&D Tax Credit?

Last reviewed October 14, 2026

Yes. S corporations can claim the federal R&D tax credit under IRC Section 41. The credit is calculated at the corporate level and passes through to each shareholder.

How the credit works for S corps

An S corporation calculates its R&D tax credit on Form 6765, which is filed with its corporate return (Form 1120-S). The credit then flows through to each shareholder on Schedule K-1, allocated by ownership percentage. Each shareholder claims their share on their personal tax return.

Shareholder-employee wages

S corporation shareholder-employees who receive W-2 wages can have their wages counted as qualified research expenses — but only the portion of their time spent on qualifying research activities. This is often a significant portion of a small S corp's total QREs, since owner-operators are frequently the ones performing R&D.

Reasonable compensation requirement

S corporation shareholder-employees must take reasonable compensation (W-2 wages) for services performed. The IRS scrutinizes situations where shareholder-employees take minimal salaries to avoid payroll taxes. For R&D credit purposes, the qualifying wages are based on actual W-2 compensation, so artificially low salaries reduce your QREs and your credit.

Startup S corps and the payroll tax offset

If your S corporation is a qualified small business — gross receipts under $5 million and within its first five years of having gross receipts — you can elect to apply up to $500,000 of the R&D credit per year against the employer's share of Social Security taxes. This election is made at the entity level on Form 6765. See Payroll Tax Offset for details.

S corp vs. C corp for the R&D credit

In a C corporation, the R&D credit directly offsets corporate income tax. In an S corporation, the credit passes through to shareholders, who use it against their personal income tax. Neither structure is inherently better for the R&D credit — the right choice depends on your broader tax situation.

One difference: C corporations can carry the credit back one year, while S corporation shareholders generally can only carry forward unused credits for up to 20 years.

What expenses qualify?

• W-2 wages for employees (including shareholder-employees) performing qualified research
• Supplies consumed during research
• Contract research payments (65% of third-party contractor costs)

Distributions to shareholders do not count as QREs. Only W-2 compensation qualifies.

Frequently asked questions

Can S corp shareholder wages count toward the R&D credit?

Yes. W-2 wages paid to shareholder-employees qualify as QREs for the portion of time they spend on qualifying research activities. Distributions and non-wage compensation do not qualify.

How is the R&D credit allocated among S corp shareholders?

The credit is allocated pro rata based on ownership percentage. It flows through on Schedule K-1 (Form 1120-S) to each shareholder's personal return.

Can an S corp use the R&D credit if it has no taxable income?

The credit passes through to shareholders, so it can offset their personal income tax liability even if the S corp itself has no taxable income. Unused credits can be carried forward for up to 20 years. Qualifying startup S corps can also elect the payroll tax offset.

Should I convert my S corp to a C corp for the R&D credit?

Not for the credit alone. Both structures can claim the R&D credit. The choice between S and C corp should be based on your overall tax situation, not just the R&D credit. Consult a tax advisor.