How the De Minimis Rate Works
The rate is applied to the organization's modified total direct costs, rather than automatically to every dollar of direct expenditure. MTDC generally excludes specified cost categories under the Uniform Guidance, including certain equipment, capital expenditures, participant support costs, and portions of subawards above the applicable threshold.
For an eligible organization, the basic calculation is:
De Minimis Indirect Cost = MTDC × De Minimis Rate
For example, if an organization has $800,000 of eligible MTDC and elects the maximum 15% rate, the calculated indirect cost is $800,000 × 15% = $120,000. The organization should apply the rate consistently according to the applicable Federal award terms and Uniform Guidance requirements.
What Costs Are Covered
Indirect costs are expenses that support multiple activities, programs, or cost objectives and cannot be readily assigned exclusively to one specific award. Common examples can include administrative support, accounting, human resources, facilities administration, and certain shared operational expenses.
An Indirect Cost becomes relevant to the de minimis calculation when it represents an allowable shared cost that the organization seeks to recover through the applicable indirect cost rate. The de minimis approach provides a standardized percentage rather than requiring the organization to develop a negotiated allocation methodology for establishing the rate.
MTDC and Indirect Cost Allocation
Correctly determining the MTDC base is essential because the 15% rate applies to the qualifying base, not necessarily the entire award or total expenditure amount. Finance teams should identify excluded cost categories before calculating the amount subject to the rate.
Indirect Cost Allocation is the broader process of assigning shared costs to benefiting programs, contracts, grants, or other cost objectives. Even when an organization uses the de minimis rate, its accounting records should provide a reliable basis for identifying direct costs and determining the applicable MTDC.
Organizations should also maintain appropriate Indirect Cost Governance practices covering rate selection, cost classification, supporting documentation, approvals, and consistent application. These controls help connect the rate calculation with the organization's broader financial reporting and audit processes.
Eligibility and Important Conditions
The de minimis option is not a universal replacement for negotiated rates. The entity must satisfy the applicable eligibility requirements, including the condition that it has never received a negotiated indirect cost rate. Once elected, the applicable requirements governing the de minimis rate should be followed consistently.
- Confirm that the organization meets the eligibility requirements before electing the rate.
- Determine the MTDC base using the applicable Uniform Guidance exclusions.
- Document the selected rate and its application to Federal awards.
- Maintain accounting records supporting direct costs and excluded amounts.
- Apply the rate consistently according to applicable award requirements.
Financial Data and Operational Controls
Reliable transaction classification supports the calculation because invoices and expenses must be accurately identified before the MTDC base is determined. Invoice workflows can use capture, extraction, validation, matching, approval, and GL posting controls, while a properly structured chart of accounts supports consistent coding of financial transactions.
Procurement records can also affect the accuracy of the underlying cost base. The procurement process should connect requisitions, purchase orders, sourcing, approvals, and spend visibility so that transactions are appropriately classified and supported.
For organizations reviewing purchasing workflows, Manual Procurement Costs and How Automation Fixes Them provides additional context on requisitions, purchase orders, approvals, procurement controls, and procure-to-pay activities.
Payment and Financial Reporting Considerations
Financial teams should reconcile expenditures used in the MTDC calculation with supporting invoices, accounting records, and payment activity. Supplier payment controls should cover approvals, payment methods, payment timing, discounts, and cash outflow. Consistent vendor payment records can support the documentation needed for financial reporting and award reconciliation.
Related finance automation can also support broader reconciliation workflows. AR Automation Software can automate manual collection followups and matching of payments with invoices to reduce DSO by 40% and reconciliation cost by 80%. Early Payments Recommendations can review early payment discounts, vendor terms, and cost of capital to recommend when to pay while supporting payment approvals and processing.
For organizations operating across finance teams, Unlimited Access provides unlimited, cost-effective access for users with automated onboarding, role-based configurations, and 24/7 availability.
Summary
The De Minimis Indirect Cost Rate provides an eligible organization with a simplified method for recovering indirect costs on Federal awards. Under the current framework, an eligible entity may elect a rate of up to 15% of MTDC when it meets the applicable conditions. Accurate MTDC calculation, appropriate cost classification, consistent application, and strong financial documentation are essential for reliable grant accounting and financial reporting.