The award letter arrives and it’s a good day. Months of proposal writing, and a federal agency has decided your technology is worth funding. You forward the news to your board, and you start planning the hires you can finally make.
Then the terms and conditions show up. Somewhere in that document is a reference to “2 CFR Part 200,” pointing to a body of regulation longer than your last term sheet.
This is when many founders discover the real cost and burden of grant compliance – well after they have started spending. The obligations are easy to underestimate. Spending the grant money on research and the project feels like the next step, but the federal government asks for considerably more.
This article covers what your obligations actually are once federal money lands, where founders most often get caught out, and what a compliant setup looks like from the first day of the award.
What grant compliance actually means
Grant compliance is an accounting framework and a set of processes that operate year-round. The reports you file are the visible part, and they are outputs. Whether you can produce them accurately and defend them two years later when an auditor asks how you arrived at a number depends on how the chart of accounts was organized, whether people recorded their time as they went, and whether anyone wrote down the reasoning behind an allocation. Those decisions all get made before the first dollar moves.
Here is what that looks like in practice. A quarterly financial report asks how much of the award you spent on personnel. If every payroll entry is already tagged to the award and the project it supported, that number takes minutes to pull and the backup comes with it. If it is not, someone spends a week walking back through pay periods, estimating splits, and producing a figure nobody can defend when it gets questioned.
Structure the books correctly and reporting becomes a byproduct of a clean monthly close. Structure them poorly, or in a way that does not line up with the grant requirements, and you can spend a considerable amount of time and money reconstructing eighteen months of transactions from bank statements and memory while a program officer waits on a deadline.
That reconstruction work is expensive and avoidable with a handful of early decisions.
The obligations that come with a federal award
Three layers of rules apply to every federal award. The Uniform Guidance in 2 CFR Part 200 sets the government-wide baseline. Each agency then adds its own implementation; DOE in 2 CFR Part 910, for instance. Your specific award document layers terms on top of both, and where it is stricter than what sits above it, the award document governs.
That structure is why “our last grant did not require this” is not a safe assumption. Two awards from the same agency, under different programs, can carry different obligations.
Underneath the variation, a common set of requirements applies across DOE, ARPA-E, NSF, and SBIR awards, and these are the ones that shape how your accounting has to work. All of them take effect the day the award period starts, not when the first report comes due.
Allowable and unallowable costs
Federal cost principles govern what you can charge to an award. A few exclusions surprise people. Entertainment, most lobbying, alcohol, and interest on borrowed capital generally cannot be charged.
Grant administration is another common surprise. The time it takes to produce reports and stand up a compliance system usually cannot be charged directly to the award, though some of it may be recoverable through your indirect cost rate.
Others are subtler. A cost has to be reasonable, allocable to the award, and treated consistently across your books. Charging a piece of lab equipment entirely to one grant when three projects use it will not survive review, even though the equipment is obviously project-related.
For-profit companies work from a different rulebook here. Nonprofits and universities follow the cost principles in 2 CFR 200 Subpart E. C-corps follow FAR Part 31.2, the same cost principles that govern federal contractors. Department of War awards add DFARS Part 231 on top of that. The frameworks overlap substantially but are not identical, and your award document tells you which one governs.
Labor and time-and-effort tracking
Payroll is the highest cost on most climate awards, and it draws the most scrutiny.
The requirement is that charges to a federal award reflect work actually performed, supported by records created at the time the work happened. A founder splitting time across a DOE project, a customer pilot, and a fundraise needs a contemporaneous record of that split.
Assembling effort allocations at year-end from calendar entries and recollection is where a large share of audit findings originate. The fix does not require expensive software. A spreadsheet works as long as everyone who charges time to the award fills it in every pay period and someone reviews it. What matters is that the record gets created while the work is happening.
Separating funds by award
You need to show, for each award, what you received and what it paid for.
That means a chart of accounts built to track by project or award, using classes, projects, or dimensions depending on your system, so grant activity stays identifiable without manual reconstruction. Running everything through one undifferentiated operating account and sorting it out later is the most common structural mistake we see.
Teams often assume this means opening a separate bank account for each award. In most cases that’s not necessary. What the requirement asks for is records that can be cleanly pulled apart, which is a chart of accounts question, not a banking one.
There is an opposite mistake worth avoiding. Some companies create a new set of general ledger accounts for every award and cost category, which can result in an unmanageable chart of accounts. The class and project tracking most accounting systems already support does the same work without expanding the account structure.
Equipment and property
This one matters more for climate companies than for most federal grant recipients, because so much of the work involves physical assets: lab equipment, electrolyzers, pilot lines, test benches.
Equipment purchased with federal funds carries obligations beyond the purchase itself. The 2024 revision to the Uniform Guidance raised the equipment capitalization threshold from $5,000 to $10,000, which reduces the tracking burden for smaller purchases. Above that line, expect to maintain property records, conduct periodic physical inventories, and follow specific rules when you eventually sell, transfer, or dispose of the asset.
Founders who treat grant-funded equipment as ordinary company property are often surprised to learn the federal government retains an interest in it. Building property records as you acquire assets is a small habit. Recreating them for a pilot facility three years later means tracking down purchase orders, invoices, and serial numbers that may no longer be readily available or easy to find.
Sub-awards to university and lab partners
Climate tech often runs on partnerships with university labs and national labs, and those relationships frequently take the form of a subaward, not a contractor relationship.
This is an important distinction, and the Uniform Guidance draws it between a subrecipient and a contractor. When you pass federal money through to a subrecipient, you inherit responsibility for monitoring how they spend it. That means evaluating their risk before the award, tracking their reporting, and following up on any findings in their own audits. A contractor relationship, where you are buying goods or services at a set price, carries none of this. Getting the classification wrong at the outset creates a monitoring gap that shows up later as your finding, not theirs.
Indirect costs
Indirect costs are the real costs of running your company that support the funded work but are not traceable to any single award. They include rent, utilities, accounting, and general administration.
You recover them in one of two ways. You can negotiate a unique indirect cost rate agreement with your cognizant agency, which takes significant effort and produces a rate specific to your cost structure. Or, where your agency and award terms permit it, you can elect the de minimis rate, which the 2024 revision to the Uniform Guidance raised from 10% to 15% of modified total direct costs.
For an early-stage company without the internal capacity to build and defend a negotiated rate, the de minimis election is often the pragmatic choice. It also represents money a surprising number of founders never realize they are entitled to recover. Confirm the election is available to you before assuming it, since treatment of for-profit recipients varies by agency.
Reporting and deadlines
Federal awards require recurring financial and technical reporting on a schedule set by the agency, quarterly, semiannually, or annually, depending on the program.
Late submissions can become findings in their own right. They also complicate life for the program officer who serves as your primary relationship at the agency, and that relationship matters when you go after a Phase II or a follow-on award.
Documentation
Everything above depends on your ability to produce evidence. Invoices, timesheets, procurement records, board approvals, and the calculation behind an allocation all count.
An auditor’s question is always some version of “show me how you arrived at this number.” Writing down the reasoning behind a decision at the time you make it is what lets you answer that question in an email instead of spending a week reconstructing it.
When grant spending triggers a Single Audit
For most climate startups, the number is $1 million, though it depends on which agency funded you. If you spend more than your applicable threshold in a fiscal year, an audit follows.
A Single Audit goes beyond the financial statement audit that an investor might request. An independent auditor reviews your financial statements and also tests compliance with the award terms, meaning how the money was spent and whether your records support it. The output is a report that goes to your funding agency, and anything the auditor questions becomes a finding attached to your award.
Where the $1 million number comes from is worth understanding, because it does not reach a C-corp the same way it reaches a university. The $1 million threshold set by 2 CFR 200 Subpart F applies to states, local governments, tribes, nonprofits, and universities. For a for-profit company, the requirement arrives through the agency that funded you, and each agency sets its own terms. Most have landed on $1 million, which is why the number holds up in practice. The Department of War is stricter — $750,000, counted against all your federal spending rather than just its own awards. A few agencies publish no threshold at all and handle it through award terms instead.
Department of Energy
DOE is the most common funder for climate startups, and its trigger is $1 million of DOE grant money expended in a fiscal year. DOE measures the threshold against DOE awards specifically, not all your federal funding. It also triggers an audit of the award or awards that crossed the line, not one audit spanning everything you received.
One wrinkle worth knowing. The regulation text at 2 CFR 910 Subpart F still reads $750,000. DOE raised the operative figure to $1 million through a class deviation, effective for fiscal years beginning on or after October 1, 2024. If you go looking in the regulation, you will find the older number.
Department of War
The Department of War, which the governing regulation still names the Department of Defense, sets its trigger at $750,000 under 32 CFR 34.16. Two things make it stricter than it looks. The figure is lower than DOE’s and includes all federal awards, not DOW awards alone. A company holding an Air Force STTR alongside a DOE grant can meet this trigger on combined spending that would never be met by DOE’s grant alone.
NSF, EPA, Interior, and Transportation
None of these four publishes a standing audit threshold for for-profit recipients. NSF states directly that for-profit organizations fall outside the Single Audit requirement and keeps no parallel rule of its own. EPA’s supplement contains no audit provisions at all. Interior and Transportation both handle for-profit recipients using standard award terms. For awards from these agencies, your audit obligation is as specified in your terms and conditions.
What this means in practice
Open your award document and read the audit provisions. In most awards, this sits in the terms and conditions under a heading like “Audit Requirements” or simply “Audits,” and it will either state a dollar figure or point you to the regulation that does. That figure is the one that governs your company. It will not always match the number in a general news article, including this one, because what applies to you depends on which agency funded you and which version of its rules was in effect when the award was issued. If you cannot find the provision, ask your grants officer. It is a routine question, and a much cheaper one to ask now than to answer later.
These rules have also changed recently. DOE moved its operative figure for fiscal years beginning on or after October 1, 2024, and the Uniform Guidance itself was revised the same year. Assume the number can move again. Check it when each new award comes in instead of carrying forward what you learned on the last one.
We recommend tracking federal spending by agency and by award, not only as a single company-wide total. The reason is that the agencies count differently. DOE measures your spending against DOE awards alone. The Department of War counts every federal dollar you spend, from any agency. Other agencies apply whatever their award terms specify. One aggregate number cannot answer all three questions at once, so a company funded by more than one agency needs its federal spending broken out by funder, with a running total for each. A simple schedule updated at each monthly close is enough. It also gives you most of what an auditor will ask for if you do cross a line, so the work does double duty.
One rule holds across every version of the threshold. What counts is money expended during your fiscal year, not money awarded. This matters most on multi-year awards. A company holding a $3 million award that spent $600,000 of it this year counts $600,000 against the threshold. That same award could push the company over the line two years later when spending accelerates. A large award does not trigger an audit on its own. A large spending year does.
When you are approaching any of these lines, start planning months before the fiscal year closes. Waiting until the books are closed leaves you doing two things at once: finding an auditor and fixing whatever that auditor is going to find. Firms that perform Single Audits are a smaller group than general accounting firms, and their calendars fill up well ahead of the season, so the search takes longer than most founders expect. Budget for the engagement too, and check your award terms on whether any of the cost is recoverable. Audit readiness is mostly a function of how you kept the books all year, which means the work that determines the outcome happens long before anyone shows up to look at it.
Where founders get tripped up
Five patterns account for most of the trouble we see.
Commingled funds. Grant money and operating cash run through one account with no project-level tracking, and every reporting cycle turns into a forensic exercise. See more on this in 8 Early Financial Mistakes.
Retroactive timekeeping. Nobody logs effort during the year, and someone assembles a plausible allocation in the spring. It is one of the first things an auditor tests.
Unallowable costs charged in good faith. Nobody sets out to charge a conference dinner or a lobbying consultant to a federal award. Small amounts accumulate quietly and surface together as a questioned-cost problem.
Missing indirect cost recovery. Companies that never make an election leave real money uncollected across the entire life of the award.
Misjudging the audit trigger. Reading one number in a general article, assuming a C-corp is exempt, and never checking which agency rule and figure actually govern your awards. Tracking federal spend only in total, instead of by agency, produces the same blind spot.
Building grant accounting right from the start
The work is the same either way. Doing it first is cheaper, because doing it later means everything you would have done first plus the reconstruction.
Setting up compliant grant accounting at the beginning is a bounded project. Configure the chart of accounts, establish a timekeeping practice, make the indirect cost election, and set up a monthly close that keeps award activity current. Once that is running, it keeps running.
Cleaning it up afterward means all of that plus reconstruction. Pulling apart commingled transactions, rebuilding effort allocations, documenting decisions nobody wrote down when they were made. It happens under deadline pressure, frequently in the middle of a fundraise or an audit, and it costs considerably more than the original setup would have.
Founders who have lived through a cleanup rarely allow it to happen twice. A meaningful share of the companies that bring in finance help before the first award lands are led by repeat founders who learned this the expensive way.
A quick self-check
A few questions worth answering honestly about your own setup:
Is more than one agency funding you, or do you hold more than one active award?
Are grant money and operating cash moving through the same account, without project or class tracking behind them?
Are effort allocations assembled after the fact, rather than recorded each pay period?
Have you made an indirect cost election, and do you know which one your award terms allow?
Do you know where you stand against each agency’s threshold, or only what you have spent in total?
Do you have subawards to a university or national lab, and a monitoring process behind them?
Any yes is worth addressing before your next reporting cycle, and well before an audit is on the calendar.
The bottom line
Federal funding is one of the most valuable tools available to climate and environmentally-focused companies. Non-dilutive capital that lets you prove out hard technology without giving up ownership is rare, and it is worth the administrative weight that comes with it.
That weight is manageable when the underlying structure is built for the job. What it should not become is a problem you solve personally, on evenings and weekends, working from a regulation you have never read and an internet full of numbers written for somebody else.
ecoCFO serves as the full finance team for climate and environmentally-focused companies, covering bookkeeping through controller work, FP&A, and CFO-level guidance, including grant accounting and the compliance infrastructure federal awards require. If you have just won an award, or expect to soon, we are glad to talk through what a proper setup looks like for your situation. Learn more about grant assessments here.