Startup Internship Offer Letter: What to Look For (And What Should Concern You)
Got a startup internship offer letter? Before you sign, here's exactly what to look for — compensation, equity, IP clauses, and the red flags that should make you pause.
Startup Internship Offer Letter: What to Look For (And What Should Concern You)
You sent the cold email. You got the reply. You made it through the interview. And now there's a startup internship offer letter sitting in your inbox.
First — that's a win. Most students never get this far.
But before you fire off an enthusiastic "YES I'm in!" reply, slow down for exactly ten minutes. Startup offer letters are not the same as Big Tech offer letters. They can be one paragraph or twelve pages. They can include equity or leave it out entirely. And some of them contain clauses that could affect your work and your rights for years.
Here's what to actually look for when you open that offer letter.
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1. Compensation: Stipend, Hourly, or "Equity Only"
The first thing to find: how much you're getting paid, and in what form.
At early-stage startups, compensation varies wildly. You might see:
- A monthly stipend (common at seed-stage companies) — e.g., "$2,500/month for 12 weeks"
- An hourly rate (more common at Series A+) — e.g., "$25/hour, 30 hours/week"
- A project fee — a flat amount for a defined deliverable
- "Equity-based compensation" — this is a red flag unless you understand what you're agreeing to
Unpaid internships at for-profit startups are generally illegal in the US under the Fair Labor Standards Act unless the internship meets specific criteria. If the offer letter doesn't mention any compensation, ask directly before signing.
What to watch for: Is the pay rate clear? Is the total expected hours-per-week defined? A vague "competitive compensation" line with no number is worth pushing back on.
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2. Equity: Is It There, and What Does It Actually Mean?
Some startups offer equity to interns. This is exciting — but only if you understand what you're reading.
If equity is mentioned, look for:
- Type of equity — stock options vs. actual shares. Options are a right to buy shares at a fixed price (the strike price) in the future. Shares mean you own something now.
- Vesting schedule — most equity vests over time (e.g., "1,000 options over 12 months with a 3-month cliff"). As an intern, you likely won't vest much unless the company extends your role.
- Strike price vs. current 409A valuation — options are only valuable if the company's share price rises above your strike price. Ask what the current 409A valuation is.
- Expiration window — options typically expire 90 days after you leave. If the company isn't public or acquired by then, you may have to pay to exercise them (or lose them entirely).
Equity for interns at very early startups is often symbolic unless the company has a strong exit. Don't make your decision based on equity alone — but do make sure you understand what you're being offered.
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3. Job Title and Scope of Work
Your startup internship offer letter should clearly state:
- Your title (e.g., "Software Engineering Intern," "Growth Intern")
- Your team or direct manager
- A general description of what you'll be working on
At a startup, things move fast — your actual work may evolve. That's expected. But if the offer letter is so vague it doesn't even state a department, ask for a one-paragraph summary of what you'll actually be doing day-to-day before you sign.
Red flag: An offer that says "general intern — help wherever needed" with no defined scope. This can be fine at a 3-person startup where everyone does everything, but it can also mean they haven't thought through what they need you for.
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4. Start Date, Duration, and Hours
Make sure the letter explicitly states:
- Start date — and whether there's flexibility if you need it
- End date or duration — "12 weeks," "through August 15th," or "3 months"
- Expected hours per week — 20 hours? Full-time 40 hours?
- Remote vs. in-person vs. hybrid — and if in-person, which city
These seem obvious but startup offer letters frequently omit them. If anything is missing, get it in writing before your first day.
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5. Intellectual Property Clauses: Read This One Carefully
This is the clause most interns skip. Don't.
Nearly every startup offer letter includes an Intellectual Property Assignment Agreement — sometimes embedded, sometimes attached as a separate document. This clause typically says that any work you create during the internship belongs to the company, not you.
That's expected and totally normal. What to watch for:
- Overly broad IP clauses that try to claim work you do on your own time, unrelated to the company's business — even on personal side projects
- Language that says the company owns inventions you create with personal tools, outside of work hours, that have nothing to do with their product
California and several other states have laws that limit how broad these clauses can be. But if you're in a state without those protections, an aggressive IP clause could technically give a startup a claim on your side project.
Ask: Does this IP clause include a carve-out for personal work unrelated to the company's business? If not, it's worth flagging.
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6. Non-Compete and Non-Solicitation Clauses
Some startup offer letters include non-compete clauses that restrict where you can work after the internship ends. Most of these are either:
- Unenforceable in your state (California, Minnesota, and several others have banned non-competes)
- Narrowly scoped (e.g., "you won't join a direct competitor for 6 months after")
- Broad and potentially harmful to your career
Read it. If there's a non-compete, understand its geographic scope, duration, and what counts as a "competitor." A three-month non-compete in a narrow industry might be fine. A 12-month blanket restriction on working at "any software company" is not.
Non-solicitation clauses — which restrict you from poaching the startup's employees or customers — are more common and less likely to affect your career as an intern. But know what you're agreeing to.
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7. Confidentiality Agreement (NDA)
You'll almost certainly sign an NDA. This is standard. It says you won't share the company's proprietary information — their code, customer lists, product roadmap, business strategy — with outsiders.
This is reasonable. Just confirm:
- It's mutual if possible (protects your information too)
- It has a clear end date, or at minimum, specifies that trade secrets are protected indefinitely but other information has a time limit
- It doesn't prevent you from discussing your own skills and general experience on your resume or in future interviews
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8. Green Flags vs. Red Flags
Green flags in a startup offer letter:
- Clear comp figure, clear hours, clear dates
- A defined scope of work and named manager
- An IP carve-out for personal projects
- Short NDA (1–2 pages, plain language)
- An offer expiration date that gives you at least 3–5 days to review
Red flags in a startup offer letter:
- No compensation mentioned
- Very broad IP assignment with no carve-outs
- Long non-compete in a state that enforces them
- "Equity only" compensation at a company you can't verify
- Pressure to sign within 24 hours with no time to review
- No start/end date or expected hours stated
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FAQs
What's the difference between a stipend and a salary in a startup internship offer letter?
A stipend is a fixed monthly amount, often not tied to specific hours, and is common at seed-stage startups. A salary (or hourly rate) is tied to hours worked and comes with more formal employment classifications. Stipends are simpler but offer less protection — make sure the amount is spelled out clearly either way.
Should I negotiate a startup internship offer letter?
Yes, and startups often expect it. If the compensation is below your market rate or the equity terms are vague, it's completely reasonable to ask for clarification or a higher number. The worst they say is no. The best outcome is you get more. See our guide on how to negotiate a startup internship offer for specific scripts.
What if the startup offer letter doesn't mention equity at all?
That's normal, especially at very early-stage companies that haven't set up an equity pool yet, or where interns simply aren't part of the equity plan. It doesn't mean something's wrong — just ask directly whether intern equity is something they offer if you want clarity.
Can I ask a startup to change clauses in their offer letter?
Yes — especially for IP and non-compete clauses. Ask politely and specifically. Something like: "I noticed the IP clause doesn't include a personal-project carve-out — would you be open to adding a standard California-style exception?" Most founders are reasonable and will accommodate this.
How long should I wait before asking about my startup internship offer letter?
Request 3–5 business days to review. Most startups will give you that. If they won't — if they're demanding you sign in under 24 hours with no exceptions — that's itself a red flag about how they operate under pressure.
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Getting to the Offer Letter in the First Place
The hardest part isn't reviewing the offer — it's getting one.
Most students send applications into the void on Handshake and LinkedIn and wait. The students who actually get startup offer letters go direct: they find the founder's email and reach out personally.
That's the whole idea behind Chiaro. You swipe on startups you want to work at, and Chiaro automatically sends personalized cold emails to founders from your Gmail — with follow-ups built in. No mass-applying. No waiting on portals. Direct founder outreach that gets replies.
Once you're getting replies, you'll have plenty of offer letters to read.
Download Chiaro on the App Store and start your 7-day free trial today.