Qualified research expenses (QREs) are the numerical inputs to the R&D tax credit calculation. This page explains the pipeline from individual cost records to the total QRE amount that feeds into the credit calculation. It is educational and is not individualized tax advice. For what QREs are, see our page on qualified research expenses; this page focuses on the numerical mechanics.
The Numerical Pipeline
At a high level, QREs feed into the credit calculation through the following pipeline:
- Employee wage record. Identify wages paid to employees who performed or directly supported qualified research.
- Qualified-services allocation. Allocate wages to qualified services (direct research, direct supervision, direct support) based on time and activity records.
- QRE wage amount. The allocated wage amount becomes the wage component of QREs.
- Contractor limitations. For contract research, apply the 65% inclusion rule under Section 41(b)(3)(A).
- Supply QRE. Identify supplies consumed in qualified research.
- Total QRE. Sum the wage, contract research, and supply amounts to arrive at total QREs.
- Credit calculation method. Feed total QREs into the regular or ASC method.
Employee Wages and Qualified-Services Allocation
Under Section 41(b)(2), in-house research expenses include wages paid to employees for "qualified services" — engaging in qualified research, or engaging in the direct supervision or direct support of qualified research. Not all of an employee's wages are automatically includable; only the portion attributable to qualified services is taken into account.
The allocation works as follows:
- Identify qualified employees. Employees who perform or directly support qualified research.
- Allocate time. For employees who split time between qualified research and other work, allocate wages based on the portion of time spent on qualified services.
- Substantially-all rule. Under Section 41(b)(2)(B), if substantially all of an employee's services for the year consist of qualified services, all of the employee's wages for the year are treated as qualified services.
For more on the wage component, see our page on R&D tax credit employee wages.
Contract Research and the 65% Inclusion
Under Section 41(b)(3)(A), contract research expenses are 65% of amounts paid to any person (other than an employee) for qualified research. This means that only 65% of qualifying contract research payments are included in QREs — not the full amount. The 65% inclusion reflects that the taxpayer is not performing the research itself.
For example, if a taxpayer pays $100,000 to an outside firm for qualifying contract research (where the taxpayer bears the economic risk and retains substantial rights), the QRE inclusion is:
Contract research QRE = 65% × $100,000 = $65,000
For more on the contract research requirements, see our page on R&D tax credit contractor costs.
Supplies
Under Section 41(b)(2)(C), supplies are tangible property other than land and depreciable property, used in the conduct of qualified research. The supply component of QREs includes the cost of supplies consumed or used in qualified research. Not every item purchased for a project is a qualifying supply — the supplies must be connected to qualified research and must meet the statutory definition. For more, see our page on R&D tax credit supplies.
Total QRE
The total QRE amount is the sum of the three components:
Total QRE = qualified wages + contract research QRE (65% of qualifying payments) + qualified supplies
This total QRE amount is the input to the credit calculation method — either the regular method or the ASC. For more on the methods, see our pages on the regular method and the ASC method.
A Numerical Example
The following is a hypothetical illustration for educational purposes only. It does not represent any actual taxpayer and does not state a filing recommendation.
Suppose a company has:
| Component | Amount | |---|---| | Qualified wages (after allocation) | $400,000 | | Contract research payments (qualifying) | $100,000 | | Supplies consumed in qualified research | $35,000 |
Step 1: Compute the contract research QRE.
Contract research QRE = 65% × $100,000 = $65,000
Step 2: Compute total QRE.
Total QRE = $400,000 + $65,000 + $35,000 = $500,000
This $500,000 total QRE is the input to the credit calculation method. For a full example showing how this feeds into the ASC and regular methods, see our page on an example calculation.
Common Misunderstanding
A common misunderstanding is that every dollar spent on development is automatically a QRE. It is not. Wages must be allocated to qualified services, contract research is included at 65% (not 100%), and supplies must meet the statutory definition and be connected to qualified research. The pipeline from raw costs to QREs involves allocations and limitations at each step.
Documentation Needed
Each step of the pipeline requires documentation:
- Wage records. Payroll records, time and activity records, and qualified-service allocations.
- Contractor records. Engagement agreements, invoices, payment records, and evidence of economic risk and rights to results.
- Supply records. Purchase orders, invoices, inventory and usage records, and records connecting supplies to qualified research.
For more, see our page on R&D tax credit documentation.
Questions for Your Tax Professional
- Are my wage allocations to qualified services supportable?
- Are my contractor payments properly included at 65%?
- Do my supplies meet the statutory definition and connect to qualified research?
- How does my total QRE feed into the regular and ASC methods?
- What records support each component of my QREs?
Key Takeaway
QREs feed into the R&D credit calculation through a numerical pipeline: wages are allocated to qualified services, contract research is included at 65%, supplies are identified, and the total QRE becomes the input to the regular or ASC method. Not every development dollar is automatically a QRE — the pipeline involves allocations and limitations at each step. Because the determination depends on specific facts, professional tax review is appropriate. For the calculation methods, see our page on how the R&D tax credit is calculated.