NIH No-Cost Extension: How to Request One

A no-cost extension (NCE) lengthens the period of performance on an NIH award without adding funds. Requesting one is a procedural task with a specific mechanism, a specific submitter, and a specific deadline — and NIH treats the first extension very differently from a second one. This guide walks through the request process from the institution’s side: who submits it, when, through which system, and what separates a routine first extension from a harder-to-get second one.

The two kinds of NIH no-cost extension

NIH recognizes two distinct NCE mechanisms, and confusing them is the most common process mistake institutions make.

• The first, one-time extension is granted under expanded authority delegated to the recipient institution by the NIH Standard Terms of Award. It extends the final budget period by up to 12 months, requires no NIH prior approval, and is exercised simply by notifying NIH through eRA Commons.
• A second (or any subsequent) extension is not covered by that delegated authority. It requires a formal Prior Approval request submitted to, and approved by, the awarding NIH Institute or Center, and NIH grants it only with significant justification.

This first-vs-subsequent distinction — and the shift from “recipient notifies” to “recipient asks and NIH decides” — is the organizing fact of the whole process. It is also a specific instance of the general change request pattern that governs mid-award modifications. See the CASRAI dictionary for the general definition of a no-cost extension (NCE); this guide covers NIH’s specific request mechanics.

Who actually submits the request

The Principal Investigator does not submit an NIH no-cost extension request directly. Under NIH’s eRA Commons process, only a Signing Official (SO) at the recipient institution — typically someone in the sponsored programs office with institutional authority to sign on the recipient’s behalf — has the role permission to initiate and submit the extension in eRA Commons, for both the first, notification-only extension and a second, prior-approval extension. In practice, the PI supplies the scientific justification and revised timeline, and the sponsored programs office packages and submits the actual request. Institutions should build this into their internal NCE workflow rather than assume the PI can self-file.

Requesting the first (one-time) extension

The first extension uses NIH’s expanded authorities and does not require a request to, or approval from, the NIH Institute or Center — it is a notification, not an application.

Timing

The extension option becomes available in eRA Commons on the Status screen approximately 90 days before the current project period end date, and the SO must exercise it before that end date. Once the project period has actually ended, the one-time authority can no longer be used through this route — the request would instead have to go through the Prior Approval module and be treated as a late, agency-approval-dependent case.

How to submit it

1. The SO logs into eRA Commons and locates the award on the Status screen, where the no-cost extension option appears once the award is within the eligible window.
2. The SO enters the new, extended project period end date (up to 12 months beyond the original date) and a brief justification.
3. The SO submits the notification. No separate NIH review or approval step is required for this one-time extension — NIH’s system records the new end date, and a revised Notice of Award is not typically issued for this action since it is exercised under delegated authority rather than granted by NIH.

Two conditions have to hold for this route to be available at all: the Notice of Award must not specifically prohibit the extension, and the approved scope of the project must not change as a result. Some awards fall outside expanded authority entirely — where the one-time authority has already been used, or where the terms of award withhold expanded authority for that mechanism — and in those cases even what would otherwise be a "first" extension has to go through the prior-approval route below.

Because this is a one-time authority, once it has been used on an award it cannot be used again for that award — any further extension must go through the prior-approval route below.

Requesting a second or subsequent extension

A second extension is fundamentally a different transaction: an application to NIH for discretionary approval, not a notification.

Eligibility window

The Prior Approval module’s no-cost extension request is available when the award has fewer than 90 days remaining before the project period end date and falls within 270 days after that end date, and the award has not already been closed out. Institutions that let an award drift past this window without acting risk losing the ability to request any further extension through Commons at all — and eventually run into normal closeout processing, covered separately in CASRAI’s federal grant closeout guide.

What the request requires

• Submission by the SO through the eRA Commons Prior Approval module, with all required fields completed.
• A justification document, typically uploaded as a single PDF, explaining why the work is not complete, why the delay is significant and not attributable to routine poor planning, and what remains to be accomplished with the additional time.
• Depending on the awarding Institute or Center, NIH may request supporting material such as a progress report or budget information before deciding.

Unlike the first extension, this request is genuinely reviewed: the awarding Institute or Center can approve, request more information, or deny it. Approval is not automatic, and institutions should expect and plan for the possibility of denial.

When to request an extension

Start the internal conversation with the PI well before the 90-day window opens — ideally as soon as it becomes clear the funded aims will not be complete by the current end date. Waiting until the final weeks of the project period compresses the time available to gather a justification, route the request through institutional sign-off, and correct any submission errors. For a second extension in particular, missing the eligible submission window (more than 90 days out, or more than 270 days after the end date) can foreclose the option entirely, so sponsored programs offices typically flag awards approaching their final budget period well in advance rather than waiting for the PI to raise it.

Why extensions get requested — and why they get denied

Typical, acceptable reasons

• Delays in recruitment, sample or reagent acquisition, equipment procurement or repair, or other operational setbacks outside the investigator’s control.
• Time needed to complete a final specific aim, finish data analysis, or complete publications arising from the funded work.
• Loss of key personnel, or the need to train a replacement, mid-project.
• IRB, IACUC, or other regulatory approval delays that consumed part of the project period before work could begin.
• Unanticipated disruptions outside the recipient’s control — a natural disaster, a subrecipient delay, or a lapse in federal appropriations affecting award processing (see NIH Government Shutdown Impact for how funding lapses interact with award timing more broadly).
• Underspend of awarded funds — see carry-forward — paired with a credible, specific plan to use the remaining balance to complete the original scope.

Reasons NIH is likely to question or deny

• Requests that amount to funding new scope or a different research direction rather than completing the originally approved aims — an NCE is not a mechanism for expanding the project.
• Justifications that read as routine poor planning rather than a specific, documented delay.
• A pattern of repeated extension requests on the same award without escalating, more detailed justification each time — NIH and CASRAI’s own lifecycle guidance both note that multiple extensions on one award draw more scrutiny, not less.
• Requests submitted outside the eligible timing window, which may be rejected on procedural grounds regardless of the scientific merits.

What an NCE cannot be used for

NIH is explicit that a no-cost extension exists to finish the originally approved project, not to fund something new:

• It cannot be used to add new scope, aims, or objectives not already approved in the current project period.
• It is not a substitute for requesting additional funds — if the work genuinely needs more money, that is a separate competing or non-competing supplement request, not an NCE.
• It generally cannot be used to compensate for poor planning or routine administrative delay unrelated to the reasons above; Institutes and Centers reviewing a second-NCE justification are specifically evaluating whether the stated reason holds up.
• It does not reopen or change budget category restrictions beyond what the recipient’s existing rebudgeting authority already allows.

Practical timeline for research administrators

1. ~120 days before project period end: program and finance review remaining funds and progress against aims, and decide internally whether an extension is likely to be needed.
2. ~90 days before project period end: the first-NCE option becomes available in eRA Commons if expanded authority applies; the SO can exercise it any time before the end date once the decision is made.
3. If the project period has already ended, or a second NCE is needed: submit through the Prior Approval module with justification (and a progress report or budget documentation if NIH asks), inside the up-to-270-day post-end-date window.
4. After the extension is granted: update internal award records, confirm the new period of performance end date is reflected in the institution’s financial system, and communicate the revised timeline to the PI and any subrecipients.

Frequently asked questions

Can a PI submit an NIH no-cost extension request themselves?

No. Only the institution’s Signing Official has the eRA Commons role permission to submit either the first, notification-only extension or a second, prior-approval extension. The PI provides the justification; the sponsored programs office submits it.

Does the first NIH no-cost extension require NIH approval?

No. The first, one-time extension of up to 12 months is exercised under expanded authority delegated to the institution and is a notification through eRA Commons, not a request requiring NIH sign-off.

How long before the end date can an NIH no-cost extension be requested?

The first extension becomes available in eRA Commons roughly 90 days before the project period end date and must be submitted before that date. A second extension is eligible when fewer than 90 days remain before the end date, up through 270 days after it, provided the award has not been closed.

Can an NIH award get more than one no-cost extension?

Only the first extension is available without NIH approval. A second or later extension is possible but requires a formal prior-approval request with detailed justification, and NIH may decline it.

Does a no-cost extension change the award budget?

No. An NCE extends the period of performance only; it adds no additional funds and does not change the approved scope of work.

Is a no-cost extension the same for every NIH grant mechanism?

Not entirely. Some mechanisms and award types have restrictions layered on top of the general process above — certain training and career-development awards face additional limits on repeat extensions, for example. Confirm the specific Notice of Award terms and the current NIH Grants Policy Statement before assuming standard expanded authority applies.

References

• NIH eRA Commons, “Submit a No-Cost Extension” — era.nih.gov/recipients/submit-no-cost-ext.htm
• NIH eRA Commons Help, “No-Cost Extension (NCE) for NIH Grants” — era.nih.gov/erahelp/commons/commons/status/NCE.htm
• NIH eRA Commons Help, “Prior Approval — No Cost Extension” — era.nih.gov Prior Approval module help
• NIH Grants Policy Statement, Section 8.1.1, “NIH Standard Terms of Award” — grants.nih.gov/grants/policy/nihgps
• 2 CFR 200.308, Uniform Guidance — revision of budget and program plans, the underlying federal authority for no-cost extensions across agencies.

Related CASRAI resources

• No-cost extension (NCE) — the general, funder-agnostic concept, including Uniform Guidance and UKRI treatment.
• NSF No-Cost Extension: How to Request One
• Grant Renewal vs. No-Cost Extension
• Period of Performance
• NIH Prior Approval
• How to Set Up an eRA Commons Account
• eRA Commons vs. Research.gov
• NIH Government Shutdown Impact
• Grants Management & Research Funding

Related reading: NIH no cost Extension — NIH no-cost extensions run on two tracks: a first, grantee-authorized 12-month extension under expanded authority, and a second or later extension that requires NIH prior approval.