Nonprofit Indirect Cost Rate Calculator
Calculates your Modified Total Direct Costs (MTDC) with the correct federal exclusions — equipment and capital expenditures, subaward amounts over $25,000, off-site rent, scholarships, and participant support — then compares your true negotiated indirect cost rate against the flat 15% de minimis rate to show exactly how many dollars a negotiated rate would recover on a specific grant. Built for nonprofit grants administrators and finance directors deciding whether it's worth the 3-6 month process of negotiating an indirect cost rate agreement (NICRA) with their federal cognizant agency, or whether the no-paperwork 15% de minimis rate is close enough.
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Correct Federal MTDC Exclusions
Automatically excludes equipment and capital expenditures, the portion of each subaward over $25,000, off-site rent, scholarships, and participant support costs from your MTDC base, per 2 CFR 200.1.
Negotiated Rate vs. De Minimis, in Dollars
Compares your negotiated indirect cost rate against the flat 15% de minimis rate on a specific grant amount, so you see the real dollar gap — not just the percentage-point difference.
Automatic Negotiate-or-Not Recommendation
Weighs your calculated negotiated rate against the de minimis rate and tells you whether the 3-6 month NICRA process is likely worth pursuing for your organization.
Frequently Asked Questions
What is Modified Total Direct Costs (MTDC) and why does it matter?
MTDC is the base your indirect cost rate gets applied to on federal awards — it's your total direct costs minus a specific list of exclusions defined in 2 CFR 200.1: equipment and capital expenditures, the portion of each subaward over $25,000, rental costs of off-site facilities, scholarships and fellowships, and participant support costs. Getting MTDC right matters because both the 15% de minimis rate and any negotiated rate are calculated as a percentage of this number, not your raw total direct costs — using the wrong base means charging (or under-charging) the wrong amount to every federal award.
Using the calculator's defaults: $800,000 in total direct costs minus $160,000 in exclusions ($40,000 equipment, $70,000 of subaward costs, $15,000 off-site rent, $10,000 scholarships, $25,000 participant support) leaves $640,000 in MTDC — 80% of the original total. That 20% gap is real money that indirect cost calculations simply don't touch, regardless of which rate you use.
Why is only the first $25,000 of a subaward included in MTDC?
Because the federal government doesn't want you double-recovering indirect costs on money you're just passing through to a subrecipient, who is presumably charging their own indirect costs on their portion of the work. The $25,000 threshold is a rough proxy for "the administrative burden of managing this subaward" — the first $25,000 of each subaward is assumed to carry roughly that much oversight cost, and anything beyond that is excluded from your MTDC base.
Using the calculator's defaults: two subawards totaling $120,000 combined only contribute $50,000 to MTDC (2 × $25,000), with the remaining $70,000 excluded. This applies per subaward, not per dollar — five $25,000 subawards would contribute their full $125,000 to MTDC, while one $125,000 subaward would only contribute $25,000. If your organization manages several distinct subawards rather than one large one, it's worth confirming this per-award treatment with your grants office, since aggregating differently-sized subawards (as this calculator does for simplicity) is an approximation of the true per-subaward calculation.
Should I use the 15% de minimis rate or negotiate my own indirect cost rate?
It depends entirely on whether your actual overhead is above or below 15% of MTDC. The de minimis rate requires no documentation and can be used indefinitely — but if your real indirect cost pool, divided by MTDC, comes out meaningfully higher than 15%, you're leaving federal reimbursement on the table every single grant cycle.
Using the calculator's defaults: a $180,000 indirect cost pool divided by $640,000 MTDC gives a negotiated rate of 28.1% — nearly double the 15% de minimis rate. Applied to a single $200,000 grant, that's the difference between $30,000 recovered at the de minimis rate and $56,250 recovered at the true negotiated rate — $26,250 left on the table by defaulting to the simple option. If your organization runs multiple federal awards a year, that gap compounds fast enough to justify the negotiation effort. If your calculated rate comes out close to or below 15%, the de minimis rate is genuinely the better choice — negotiating a rate that turns out to be no better (or worse) than the flat rate wastes the 3-6 months it typically takes.
What does the negotiation process for an indirect cost rate agreement (NICRA) actually involve?
You submit an indirect cost rate proposal to your cognizant federal agency — the agency providing the largest share of your direct federal funding — including a full year of organizational financial data and a documented cost allocation methodology showing how you split costs between direct, indirect, and excluded categories. Once negotiated and approved, all federal agencies are required to accept your negotiated rate, not just the one you negotiated with.
The process typically takes 3-6 months and produces a formal Negotiated Indirect Cost Rate Agreement (NICRA), which you can then use on every future federal award rather than negotiating separately with each funder. This upfront investment is exactly what the calculator's recommendation is weighing — a few months of documentation work now, in exchange for a higher, federally-binding rate on every award going forward, versus the de minimis rate's zero paperwork but potentially lower recovery.
Does my indirect cost rate apply the same way to every federal grant I receive?
Generally yes — once negotiated, federal agencies must accept your NICRA rate across all your federal awards, with narrow exceptions where a statute, regulation, or specific agency approval requires a different rate for a particular award or class of awards. This is one of the practical advantages of negotiating your own rate over relying on the de minimis rate: you calculate it once and apply it consistently, rather than re-deriving your overhead recovery approach for every new grant application.
That said, each individual award still needs its own MTDC calculated from that award's specific direct cost budget — a grant with a large equipment purchase or a big subaward will have a different MTDC, and therefore a different dollar amount of indirect recovery, even at the same rate. The rate is constant; the dollar recovery still depends on each award's own budget composition.
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