A common question is whether R&D tax credit documentation can be prepared without timesheets — that is, without exact, contemporaneous records of how each employee spent each hour. The answer is nuanced: exact contemporaneous timesheets are not necessarily a universal requirement, but taxpayers still need support for wage allocations and qualified services. This page explains the distinction and what alternative records may help. It is educational and is not individualized advice. For more on the wage framework, see our page on R&D tax credit employee wages.
What the Rules Require
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. 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 so that only the portion attributable to qualified services is taken into account. The statute includes a "substantially all" rule: if substantially all of the services performed by an individual for the year consist of qualified services, then all of the services for the year are treated as qualified services. For more on this framework, see our page on R&D tax credit employee wages.
Are Exact Timesheets a Universal Requirement?
The IRS has not published a rule stating that exact, contemporaneous, hour-by-hour timesheets are a universal requirement for every R&D tax credit claim. The Treasury Regulations and the Instructions for Form 6765 do not prescribe a single documentation format. What the rules require is support for the wage allocation — a supportable basis for determining what portion of an employee's wages is attributable to qualified services. Timesheets are one way to provide that support, but they are not the only way.
What the Rules Do Require
While exact timesheets may not be a universal requirement, the rules do require support for wage allocations. The business must be able to show, in a supportable way, what portion of each employee's wages is attributable to qualified services. This means having some basis — whether timesheets, project records, time estimates, or other records — for the allocation. An allocation with no support is generally not sufficient. For more on recordkeeping, see our page on R&D tax credit recordkeeping.
Alternative Supporting Records
If a business does not maintain exact contemporaneous timesheets, other records may help support wage allocations:
- Project assignments — records showing which employees were assigned to which projects.
- Time and effort records — records showing the approximate portion of time spent on qualified research, even if not hour-by-hour.
- Project documentation — records showing what work was done, by whom, and when.
- Payroll records — records showing wages paid to each employee.
- Contemporaneous project notes — notes made during the work that show who was involved and to what extent.
These records may not be as precise as exact timesheets, but they may provide a supportable basis for allocation, depending on the facts. For more on time tracking, see our page on R&D time tracking.
The "Substantially All" Rule
For employees who spend substantially all of their time on qualified services, the "substantially all" rule may simplify the analysis: if substantially all of an individual's services for the year consist of qualified services, all of the services are treated as qualified services. For these employees, exact timesheets may be less critical, because the allocation question is simplified. For employees who split time between qualified research and other work, more detailed support is generally needed. For more on this rule, see our page on R&D tax credit employee wages.
What the IRS Has Said
The IRS audit guidance has noted that studies relying on manager recollection without supportable records can fail to establish the required connection between activities and costs. This suggests that while exact timesheets may not be required, some supportable basis for the allocation is important. A study that relies solely on after-the-fact estimates, with no contemporaneous support, may be vulnerable. For more on IRS expectations, see our page on R&D tax credit documentation.
Year-Round Records vs. After-the-Fact Estimates
Contemporaneous records — whether timesheets or alternative records — tend to be more useful than after-the-fact estimates. A business that maintains project assignments, time and effort records, and project documentation throughout the year is in a better position than one that tries to reconstruct everything at year-end. For more on why timing matters, see our page on contemporaneous R&D documentation.
What This Does Not Guarantee
The absence of exact timesheets does not make a credit claim invalid, but it does not guarantee that the claim will be accepted either. The business still needs support for the wage allocation, and the strength of that support depends on the quality of the alternative records. A business with strong alternative records may be in a good position; a business with no records at all may struggle. For more on the qualification framework, see our page on qualified research expenses.
Key Takeaway
Exact contemporaneous timesheets are not necessarily a universal requirement for R&D tax credit documentation, but taxpayers still need support for wage allocations and qualified services. Alternative records — project assignments, time and effort records, project documentation, and contemporaneous notes — may help support allocations, depending on the facts. The "substantially all" rule may simplify the analysis for employees who spend substantially all of their time on qualified services. For more on the wage framework, see our page on R&D tax credit employee wages.