Hertz STEM PhD Fellowship 2027: Up to $250,000 in Support plus a $38,000 Nine-Month Stipend

The Hertz Fellowship is a U.S. doctoral fellowship for students whose technical work is aimed at major, near-term problems. It is especially relevant to applicants working in applied physical or biological sciences, mathematics, and engineering who want substantial freedom in choosing research directions, advisors, and institutions.

The 2027 Hertz Fellowship is the current announced cycle. The Foundation’s application page says the application opens on August 31, 2026. Its application FAQ identifies October 31 as the application deadline, so the live deadline for this page is October 31, 2026. Applicants should still check the official portal for the time zone and any notice posted when the application opens.

This is a fellowship for an individual student, not a grant tied to one proposed project. The application gives you space to describe current and prior research and the interests you intend to pursue, but the Foundation says a separate research project proposal is not required. That distinction matters: reviewers are assessing how you think, what you have already done, and what kind of applied scientist or engineer you may become.

Hertz Fellowship at a Glance

What the Money Actually Looks Like

The stipend figure is often misquoted, so it is worth being precise. Hertz pays a nine-month personal stipend, not a twelve-month salary. The Foundation describes the package as a cost-of-education allowance plus a personal stipend valued at up to $250,000.

There are two compensation arrangements, depending on whether you receive another fellowship, scholarship, or grant.

Option 1: Hertz Foundation only

• Full tuition equivalent
• $38,000 nine-month personal stipend
• Renewable annually for up to five years
• $5,000 per year additional stipend if you have dependent children

Option 2: Coordinated with another awarding institution

If you also receive an award from another funder, Hertz coordinates with that organization so you can take advantage of both offers. The Foundation gives a three-year NSF fellowship as an example:

• During the Hertz period: full tuition equivalent and a $44,000 nine-month personal stipend
• During the NSF period: a $9,000 per year supplemental stipend from the Hertz Foundation on top of the NSF award
• Renewable annually for up to five years
• The same $5,000 per year dependent-children stipend applies

The Foundation names the National Science Foundation, National Institutes of Health, and National Defense Science and Engineering Graduate Fellowship among the institutions it coordinates with. It also says a fellow may defer the Hertz Fellowship for certain other awards, including a Fulbright, Rhodes, Churchill, or Marshall scholarship.

Fellows with dependent children may receive the additional $5,000 per year stipend listed in either compensation option.

What This Fellowship Offers Beyond the Cash

Financial room to choose your advisor

Because the tuition equivalent is covered, you can approach graduate training with funding that is not tied to one advisor’s grant. The Foundation describes this as freedom to choose a top-choice advisor and research group and to explore ideas outside the constraints of an advisor’s grants.

Time and independence for hard problems

Hertz is aimed at technically demanding work in applied science, engineering, and mathematics. The Foundation asks applicants to direct their studies toward understanding and solving major, near-term problems facing society. That can involve a new technology, a business, or another practical application of scientific interests.

A network that keeps paying out

Funding is only one part of the offer. The Foundation describes a lifelong community, professional development, symposia, peer support, and networking with scientists across disciplines. It also provides career support and a dedicated mentor during the fellowship.

Mentorship that outlasts the PhD

The Foundation says Fellows work with a dedicated mentor throughout the fellowship. That support sits alongside the peer community, partner organizations, and career-development activities described on the program page.

Who Can Apply

The eligibility rules are narrower than many applicants assume, and the academic-stage rule catches people out every year.

1. Citizenship. You must be a US citizen or permanent resident. Proof is requested during the interview phase if you advance. There is no exception for student visa holders.

2. Academic stage. The standard applicants are college seniors, first-year graduate students, or people in a gap period preparing to apply to graduate school. The current FAQ also says that students beyond the first year of a PhD may apply in rare circumstances, but they must explain the circumstances and show how the fellowship would make an exceptional difference to the scope, direction, or quality of their graduate work. Do not treat the exception as a normal eligibility route.

   Master’s status is handled by context. A standalone master’s program that does not lead directly to a PhD does not automatically disqualify you. A master’s degree that is a required step within an already accepted PhD program counts toward graduate years. The FAQ also addresses master’s degree holders in a gap period who intend to start a first-year PhD in fall 2027, as well as current first-year PhD students who took a gap period after a master’s degree. Read those cases carefully when completing the projected-status fields in the application.

3. Degree type. Hertz supports PhDs only. Professional degrees — MD, JD, MBA, DPH, DVM — are excluded. The PhD portion of an MD/PhD program is supported.

4. Field. The fellowship covers the applied physical and biological sciences, mathematics, and engineering. The foundation is explicit that it does not select by field alone; it wants to see how your work bears on major, near-term problems facing society.

5. Institution. You must pursue a full-time, in-person PhD at an institution in the United States. The Foundation maintains a list of participating schools, but you do not need to attend one of them to apply. If you receive the fellowship and your school is not on the list, you may ask the Foundation to add it; the FAQ also says Fellows may change to another participating school during the fellowship.

6. Moral commitment. Before receiving the fellowship you make a non-binding moral commitment to make your skills available to the United States in times of national emergency. The foundation states plainly that this is not a contractual obligation and leaves its interpretation to each fellow. Note that this replaced the older framing of a required post-fellowship US work period — there is no twelve-month employment contract.

Fit questions to consider

• Applicants whose work is primarily descriptive rather than technically or mathematically driven
• Students whose interests are still vague; “I like science in general” will not carry an application
• Strong grades with no evidence of independent thinking — no self-started projects, no work beyond assignments
• People who cannot yet explain how their work addresses a major, near-term problem

These are practical fit questions, not additional published disqualifiers. The Foundation’s stated criteria and the quality of the application remain the controlling source.

What You Actually Submit

The application is built around essays and reference evaluations rather than a research proposal. The Foundation is direct about this: the fellowship funds individual students, not specific projects, so no proposal is required. You should describe your current and prior research experiences and the interests you intend to pursue, but you are not submitting a fixed five-year project plan.

Essays. Several short essays with a suggested length of 250–500 words, plus a personal essay of 500–1,000 words. The foundation says reviewers care far less about hitting the word count than about whether you address the prompt. The personal essay is explicitly meant to show creativity outside your research — an extracurricular obsession, a leadership episode, something that explains who you are.

Four recommenders. Register four people in the online application. Each recommender completes the Foundation’s evaluation form, not a free-form letter. The form asks about scientific knowledge, independence, creativity, originality, initiative, problem-solving, and potential as an applied scientist or engineer. A standard supplemental recommendation cannot replace the required form.

Transcripts. Unofficial transcripts are accepted at the application stage. Official copies are requested only if you advance to the finalist stage.

GRE scores. Optional. The Foundation accepts GRE Subject Test scores but does not require them. If you submit scores after the application deadline, the FAQ says the file can still be reviewed without them if they have not arrived when initial interview decisions are made.

Preparing Before the August 31 Opening

The portal is scheduled to open on August 31, 2026. Use the preparation period to assemble evidence and coordinate the parts of the application that depend on other people.

• Confirm your eligibility honestly. The academic-stage rule is the one that most often ends an application before it begins. If you are already past your first year of a PhD, review the Foundation’s rare exceptional-circumstances route before deciding whether this is the right application for you.
• Ask your four recommenders now. Tell them the form is a structured evaluation, not a letter, and that the Foundation’s FAQ gives the reference deadline as November 3 at 6:00 p.m. Pacific. Entering their details in the application triggers an email asking them to complete the form.
• Draft the personal essay early. It is the piece applicants most often leave until last and the one that most often reads as thin. It asks about creativity beyond your research, which takes reflection rather than a lab-notebook summary.
• Gather your evidence. Prototypes, first-author work, patents, open-source contributions, competition results, original mathematical work — the concrete artifacts that show you build and initiate rather than only complete assignments.
• Watch the application page when it opens. The official page lists August 31, 2026 as the opening date. Read the prompts and upload rules in the live application rather than relying on a prior year’s form.

Insider Tips for a Strong Application

Tell a coherent story about your trajectory

Reviewers read your transcripts, essays, and reference forms as parts of one story: who is this person, where are they heading, and why will they do something remarkable? Connect past research to the problems you want to work on, explain why those problems matter to you specifically, and make it easy for a reviewer to summarize you in one sentence.

Show evidence, not just enthusiasm

Everyone claims to be passionate about science; that is the baseline. Prove sustained effort — long-term research rather than a single summer, side projects with technical depth, contributions that changed something in your lab or team. If you write that you love building things and your CV lists nothing you have built, close that gap first.

Keep the technical writing clear without watering it down

Your readers are scientists and engineers, but rarely in your narrow subfield. Aim for explanations with enough mathematical or technical substance to signal depth, minimal jargon, and terms defined briefly on first use. If a strong engineer from a different discipline reads your essay and thinks “I understand why this is hard and why it matters,” the level is right.

Prepare seriously for both interview rounds

Round 1 happens by Zoom in December and January; Round 2 is in person in February 2027 for selected finalists. Expect questions about your work, how you reason, and how you handle unfamiliar problems. Practice explaining your research to a technically strong reader outside your subfield, and rehearse the assumptions, limitations, and next experiments you would discuss when challenged.

Frequently Asked Questions

Do I need to be in a PhD program already?

No. College seniors, people in a gap period preparing to apply, and first-year graduate students are standard eligible groups. Students beyond the first year may apply only under the rare exceptional-circumstances route described in the current FAQ.

What if my research is very theoretical?

The operative word is applied. Theory and modeling can qualify if there is a credible path from your work to real systems, technologies, or methods — control theory, algorithms, and statistical methods with practical targets often fit. Purely abstract work with no foreseeable application is a weaker match.

Can I hold Hertz alongside the NSF GRFP?

Yes. The foundation coordinates with the NSF, NIH, and NDSEG among others specifically so you can accept both offers. The coordinated structure raises the Hertz-period stipend to $44,000 for nine months and adds a $9,000 per year supplement during the other award’s period.

Is there a GPA cutoff?

None is published. Strong performance in demanding technical coursework helps, but the committee weighs research capacity and originality far more heavily. A slightly lower GPA paired with genuine independent research and strong reference forms can absolutely compete.

Do I need to submit a research proposal?

No. Hertz funds people rather than projects. Describe what you have done and where you want to go, but there is no proposal document.

When does funding begin?

The Foundation’s FAQ says funding for selected 2027 Hertz Fellows begins in fall 2027. The same page says Fellows are selected in late March 2027, notified in April, and announced publicly in May 2027.

Get Started

Ready to apply for the 2027 cycle?

Visit the official Hertz Fellowship application page here: Hertz Foundation Fellowship Application – Full Details and Portal

You will find the current cycle’s eligibility rules, essay prompts, upload requirements, reference workflow, and the application portal at fellowship.hertzfoundation.org. The fellowship team lists [email protected] for application questions.

Before submitting, verify the deadline and time zone in the live application, make sure all four recommenders understand that they must complete the Foundation form, and confirm that your planned PhD and institution fit the published criteria. The official pages are the authority if the portal presents a later correction or additional instruction.