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R&D Tax Credit Calculator

Calculate federal and state R&D tax credits using Regular (20%) or Alternative Simplified Credit (14%) methods with QSB payroll offset eligibility

Calculation Method

Choose between Regular (20%) and Alternative Simplified Credit (14%)

Qualified Research Expenses (QREs)

Current year expenses that qualify for the R&D credit

W-2 wages for employees performing qualified research

Tangible property consumed in R&D (not depreciable assets)

65% of amounts paid to third parties for qualified research

Total QREs:$650,000

Prior 3-Year QREs

Required for Alternative Simplified Credit calculation

Company Information

Required to determine QSB eligibility and state credit

Total revenue for the current tax year

Number of years with gross receipts

Federal R&D Credit

IRS Form 6765 - Credit for Increasing Research Activities

Recommended Method
Regular (20%)
Regular Method:$117,000
ASC Method:$66,500
Best Federal Credit:$117,000

Qualified Small Business

Eligible for payroll tax offset up to $500,000/year

Max Annual Offset:$117,000

File Form 6765 with your tax return and Form 8974 with quarterly payroll taxes to claim this offset.

CA State Credit

Additional state R&D tax credit available

Credit Rate:1,500.0%
State Credit:$97,500
Carryforward:Indefinite

Total Tax Benefit

$214,500
Federal Credit:$117,000
State Credit:$97,500
Effective Rate:1,800.0%

How the R&D Tax Credit Calculator Works

Regular Method (20% Rate)

Established calculation method for companies with historical gross receipts. Credit = 20% × (Current QREs - Base Amount). Base Amount is the lesser of: (1) Fixed-base % × Average annual gross receipts for prior 4 years, or (2) 50% of current year QREs. Fixed-base percentage is typically 16% but varies by company history.

Credit = 20% × (Current Year QREs - Base Amount) Base = MIN(Fixed-base % × Avg Gross Receipts, 50% × Current QREs)

Alternative Simplified Credit (14% Rate)

Simpler method requiring only 3 years of QRE history. Credit = 14% × (Current QREs - 50% × Average of prior 3-year QREs). If no prior years, full current QREs qualify. Often better for newer companies or those with consistent R&D spending.

Credit = 14% × (Current QREs - 50% × 3-Year Avg QREs) If no history: Credit = 14% × Current QREs

Qualified Small Business Payroll Offset

QSBs can offset up to $500,000/year against payroll taxes. Requirements: Gross receipts <$5M and ≤5 years of gross receipts. Credit offsets employer Social Security tax liability (filed quarterly on Form 941 with Form 8974).

Eligible if: Gross Receipts < $5M AND Years in Business ≤ 5 Max Annual Offset: $500,000 ($125,000 per quarter)

State Credits

State R&D credits stack on top of federal credits. Calculation methods vary: some use QREs over base (like California at 15%), others use a percentage of federal credit (like New York at 50%), and some use total QREs (like Massachusetts at 10%). Carryforward periods range from 5 years to indefinite.

Varies by state: • CA: 15% × (QREs - Base), Indefinite CF • NY: 50% × Federal Credit, 15-Year CF • TX: 8.722% × (QREs - Base), 20-Year CF

Frequently Asked Questions

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