A research budget is the itemized cost estimate submitted with a grant proposal, broken into direct costs tied specifically to the project and indirect (facilities-and-administrative, or F&A) costs that cover the institution’s shared infrastructure and administration. This guide walks through how to actually build one, category by category, for a US federal grant proposal governed by the Uniform Guidance cost principles at 2 CFR Part 200 — the framework most US institutional and many private-funder budgets follow even when the funder isn’t itself a federal agency.
It assumes you’re building a budget from a project’s scope of work outward, not reverse-engineering one from a target dollar figure. For the narrative that explains each line item once the numbers exist, see the companion budget justification narrative guide; for NIH’s specific under-$250,000 shortcut format, see NIH modular budgets.
The foundational split: direct costs vs. indirect (F&A) costs
Every dollar in a research budget is either a direct cost or an indirect cost — never both, and the distinction is not about which costs are “important,” it’s about how specifically a cost can be tied to the project.
- Direct costs (2 CFR 200.413) are costs that can be identified specifically with the particular project, or assigned to it with a high degree of accuracy — personnel salary and effort on the project, project-specific equipment and supplies, travel to a study site or conference to present project results, and subawards to collaborating institutions.
- Indirect costs, also called Facilities and Administrative (F&A) or “overhead” costs (2 CFR 200.414), are costs incurred for common or joint purposes that benefit more than one project and can’t be readily assigned to a single one — building depreciation and operations, utilities, library services, departmental and central administration, and sponsored-programs office support. These are recovered through a single negotiated percentage rather than itemized line by line.
An institution’s indirect cost rate is set through a Negotiated Indirect Cost Rate Agreement (NICRA) with its cognizant federal agency, typically expressed as a percentage of Modified Total Direct Costs (MTDC) — direct costs minus items MTDC excludes, most commonly equipment, capital expenditures, the portion of each subaward beyond the first $25,000, patient care costs, tuition remission, rental costs of off-site facilities, and student support such as scholarships and fellowships. Negotiated rates vary widely by institution type and commonly fall in the roughly 25%–70% MTDC range at US research universities and academic medical centers, though the specific figure is unique to each institution’s negotiated agreement and has to be confirmed directly with the sponsored-programs office rather than assumed. An institution with no negotiated rate can generally elect a flat 10% de minimis MTDC rate instead (2 CFR 200.414(f)).
Every cost — direct or indirect — still has to independently satisfy the general cost-principle tests at 2 CFR 200.403: it must be reasonable, allocable to the award, treated consistently across similar circumstances, and adequately documented. See the 2 CFR 200 Subpart E cost-principles guide for the full allowability framework this budget-building process sits inside.
Step 1: Build personnel costs first
Personnel is the largest line item on most research budgets and the one every other category is checked against for internal consistency, so build it first.
Effort and person-months
For every person contributing to the project — the principal investigator, co-investigators, other key personnel, postdocs, students, and technical/administrative staff charged directly to the award — the budget needs a stated level of effort, typically expressed as person-months (calendar months of effort per year) or as a percentage of full-time effort. Effort must reflect the time the person will actually spend on the project’s scope of work, not an arbitrary round number chosen to hit a budget target; whatever figure goes in the budget is also what effort-reporting/certification systems will later be checked against once the award is active (see effort reporting methodologies).
Salary and the institutional base
Salary cost for each person is calculated as their institutional base salary multiplied by their percentage of effort on the project. For NIH awards specifically, the chargeable salary rate is capped regardless of a person’s actual institutional salary — the cap is tied to Executive Level II of the federal executive pay scale and is updated annually (currently $228,000 effective January 1, 2026, via NIH Guide Notice NOT-OD-26-034/NOT-OD-26-038); any salary above the cap for a capped individual’s committed effort has to be paid from non-federal funds, and effort reporting still has to reflect the person’s true effort, not a reduced percentage scaled down to make the capped salary “work.”
Fringe benefits
Fringe benefits (health insurance, retirement contributions, payroll taxes, and similar employer-paid costs) are added on top of salary, usually as an institution-specific negotiated fringe rate applied to salary dollars — confirm the current rate with the sponsored-programs or finance office rather than assuming a round-number estimate, since fringe rates are institution-specific and typically differ by employee class (faculty, staff, student, postdoc).
Step 2: Build the remaining direct cost categories
Once personnel is set, the remaining direct cost categories typically include:
- Equipment — tangible property with a useful life of more than one year and a per-unit acquisition cost at or above the institution’s capitalization threshold or $10,000, whichever is lower (2 CFR 200.1). Below that threshold, an item is a supply, not equipment. Equipment is generally excluded from MTDC (so it doesn’t draw F&A), but still needs its own competitive-procurement justification if above the federal simplified acquisition threshold.
- Travel — domestic and foreign travel tied to the project’s scope of work: site visits, participant recruitment travel, conference travel to present project results (distinct from general professional-development travel, which is harder to justify as project-specific). Foreign travel commonly has separate funder-specific approval or notification requirements.
- Supplies and materials — consumable items used up during the project (lab reagents, software licenses tied to project work, minor equipment below the capitalization threshold).
- Subawards / subcontracts — the portion of the project performed by a collaborating institution under its own budget and scope of work, itemized as its own direct+indirect total on your budget even though the money passes through to a different institution’s negotiated rate. See subaward agreement negotiation for how these get structured and documented, and note only the first $25,000 of each subaward typically counts toward your own MTDC base for F&A purposes.
- Participant/patient costs — payments or costs specifically tied to human research participants (stipends, patient care costs in a clinical trial), often excluded from MTDC and sometimes requiring separate budget-category treatment depending on the funder. For a clinical-trial-specific breakdown of these costs, see the cost of running a clinical trial.
- Other direct costs — publication costs, human subjects payments, computer time, and any other project-specific cost that doesn’t fit the categories above.
If a cost-sharing or matching commitment applies — some funders require it, and institutions sometimes volunteer it — that has to be tracked and documented as a distinct line separate from the requested budget; see what is cost sharing for mandatory vs. voluntary treatment under 2 CFR 200.306.
Step 3: Apply the indirect (F&A) rate
Once every direct cost category is built, calculate the MTDC base (total direct costs minus the standard exclusions — equipment, the capital-expenditure portion of any line, the subaward amount above the first $25,000 per subaward, participant/patient care costs, tuition remission, and student aid, among others specific to the institution’s NICRA), then apply the negotiated F&A rate to that base. The result is added to total direct costs to produce the total budget request. Funders occasionally cap the allowable F&A rate below an institution’s federally negotiated rate for a specific program (some foundation and training-grant mechanisms do this) — check the funding opportunity’s own budget instructions before assuming the full negotiated rate applies.
Step 4: Write the budget justification narrative
A budget without a justification narrative gives reviewers no basis to judge whether the numbers are real. The narrative explains, category by category, what each line item is, why it’s necessary for the proposed work, and how the dollar figure was calculated — the same reasonable/allocable/documented test from 2 CFR 200.403 restated in prose. This is a distinct document from the numeric budget itself and is covered in full, category by category with common reviewer red flags, in the dedicated budget justification narrative guide.
Common budgeting mistakes
- Backing into effort numbers from a target total rather than the actual scope of work — this is the single most common reviewer flag, and it creates a real compliance problem later when effort certification doesn’t match what was proposed.
- Miscalculating the MTDC base — applying F&A to the full direct-cost total instead of the MTDC base after exclusions, which overstates the indirect cost request.
- Treating equipment below the capitalization threshold as equipment instead of a supply, which misapplies the MTDC exclusion.
- Omitting the subaward F&A calculation — forgetting that only the first $25,000 of each subaward counts toward your own MTDC base.
- Rounding without a documented basis — a justification narrative that just restates a line-item dollar figure without explaining how it was derived reads, to a reviewer, as unsubstantiated.
Frequently asked questions
What’s the difference between a research budget and a budget justification?
The budget is the numeric spreadsheet of cost categories and dollar amounts; the justification is the prose narrative that explains and supports those numbers, submitted as a companion document. Reviewers use the budget to see how much is being requested and the justification to judge whether the request is reasonable.
Do all funders use the same budget categories?
The general categories — personnel, equipment, travel, supplies, subawards, other direct costs, and indirect costs — are close to universal across US federal funders because they trace back to the same Uniform Guidance framework, but each funder’s application system (Grants.gov’s SF-424 R&A budget forms, NIH’s R&R Budget or Modular Budget form, NSF’s budget form) has its own specific line-item structure and instructions, which always override any general default.
How is a research budget different for a clinical trial?
Clinical trials add cost categories that a typical research grant budget doesn’t need — per-participant/per-visit clinical costs, IRB and regulatory fees, clinical research coordinator effort, data and safety monitoring, and site-specific costs when a trial runs across multiple sites. See the cost of running a clinical trial for that specific breakdown.
What happens if actual costs don’t match the budget once the award starts?
Award recipients can typically rebudget within limits set by the funder and the institution’s own delegated authority, but rebudgeting across certain thresholds (often a percentage of total costs, or moving funds into or out of specific restricted categories) usually requires prior sponsor approval — the specific rules are set by the funder’s terms and conditions and the award’s own notice of award, not by a single universal percentage.
