Documenting wage allocations is a key part of substantiating the wage component of qualified research expenses under Section 41. Where an employee performs qualified services for only part of the year, or splits time between qualified research and other work, the wages generally need to be allocated. This page explains how to document wage allocations in a way that can help support a credit claim. It is educational and is not individualized advice. For the wage framework, see our page on employee wages.
The Qualified-Services Framework
Under Section 41(b)(2), qualified services include engaging in qualified research, engaging in the direct supervision of qualified research, and engaging in the direct support of qualified research. Wages are taken into account only to the extent they are attributable to qualified services. Where an employee performs qualified services for only part of the year, or splits time between qualified research and other work, an allocation is generally required. For more, see our page on employee wages.
The Substantially-All Rule
Section 41(b)(2)(B) includes a "substantially all" rule: if substantially all of the services performed by an individual for the taxpayer during the taxable year consist of qualified services, then all of the services performed by that individual for the year are treated as qualified services. Where that threshold is met, no allocation is needed. Where it is not met, an allocation is generally required.
Documenting the Employee's Role and Activity
Useful wage-allocation documentation connects the employee's actual services to qualified research:
- Role description — what the employee's role was on the project.
- Activity description — what the employee actually did (e.g., designing experiments, conducting tests, analyzing results).
- Project nexus — which specific business components and qualified research activities the employee worked on.
- Time support — records supporting the time allocation (see below).
Job title alone does not determine treatment. The analysis focuses on what the employee actually did. For more, see our page on employee wages.
Alternatives to Perfect Contemporaneous Timesheets
Exact timesheets are not universally the sole acceptable form of support for wage QREs. While detailed time records can help support wage allocations, other forms of documentation may also support a claim:
- Project assignments — records showing which projects an employee was assigned to.
- Technical narratives — descriptions of the work performed on each project.
- Allocation methodologies — supportable methods for allocating time based on project involvement.
- Contemporaneous project tracking — records of project activities and involvement.
The adequacy of documentation depends on the facts and circumstances. The key is that the allocation method is supportable and consistent with the regulations and the Instructions for Form 6765. For more, see our page on documentation without timesheets.
Avoid Invented Allocation Percentages
A common mistake is using invented or unsupported allocation percentages — for example, assigning a fixed percentage of an employee's wages to qualified research without a supportable basis. The IRS has noted that studies relying on manager recollection without supportable records can fail to establish the required connection. Allocation percentages should be supportable by records of the employee's actual activities and project involvement.
Hypothetical Example
Consider an engineer who splits time between qualified research (developing a new process) and routine production support (troubleshooting the existing process). The records show: the engineer's role on the development project, the activities performed (designing and conducting experiments), the project nexus (the specific process being developed), and time support (project assignments and activity records supporting the allocation). This documentation — connecting the engineer's actual services to qualified research — can help support the wage allocation.
By contrast, a record that simply assigns 50 percent of the engineer's wages to qualified research without any support is less useful.
This example is illustrative only.
Documentation That May Help
Records that can help support wage allocations include project assignments, activity descriptions, time and effort records, allocation methodologies, and records connecting employees to specific business components. For more, see our page on R&D tax credit documentation.
Key Takeaway
Documenting wage allocations involves connecting employee services to qualified research, supporting time allocations with project nexus, and using alternatives to perfect contemporaneous timesheets. Invented allocation percentages should be avoided. Because documentation adequacy is fact-specific, professional review is appropriate.