How to Write an Internship Offer Letter That Is Clear and Fair

Why a written offer matters even for short internships

A written offer sets expectations, protects both sides, and gives the intern something to accept formally. It also creates a record if questions come up later.

Interns are often students or career changers who are new to workplace norms. A clear letter removes guesswork about when to arrive, what they will work on, and whether they are paid. It also helps the intern explain the opportunity to a school or family.

For you, the letter is a record of what was promised. If a dispute arises about hours, pay or duties, the document shows what both parties agreed to. It is not a contract that guarantees employment after the internship, and it should say so plainly.

If you are new to the format, the guide to what an offer letter is explains how it differs from an employment contract.

Decide the classification and pay before you draft

Whether an intern must be paid depends on the facts of the arrangement and on federal and state law. Settle this first, because the letter must match reality.

The U.S. Department of Labor applies a test to decide whether an intern at a for-profit business is really an employee, and many states add their own rules. The test looks at who benefits most from the arrangement, whether the intern displaces regular workers, and whether the experience is tied to formal education. Rules change, so check the Department of Labor guidance and your state labor office, and ask an attorney if the situation is unclear.

In practice, many small businesses simply pay interns an hourly wage. That avoids classification risk and tends to attract stronger candidates. If you do pay, you are an employer for that person, so handle payroll correctly. The guide on how to do payroll covers the setup, and how to hire interns covers recruiting.

The core details every offer letter should include

State the title, dates, schedule, pay, supervisor, location and basic duties. Missing any of these is the usual cause of confusion.

Use this checklist as the skeleton of the letter:

1. Position title and department. For example, Marketing Intern.
2. Start and end dates. Include the last day, not just a season name.
3. Schedule. Days, expected hours per week, and whether hours can flex around classes.
4. Compensation. Hourly rate or stipend, pay frequency, and how time is recorded. If unpaid and for academic credit, say that and name the school requirement.
5. Supervisor. Name and contact information.
6. Work location. On-site, remote or hybrid.
7. Main responsibilities. Three to five bullet points, phrased as learning goals as well as tasks.

Specific wording beats general wording. "Help build our monthly email campaign and report on open rates" says more than "assist with marketing."

Conditions, policies and the at-will statement

List anything the offer depends on, such as paperwork or a background check, and state that the internship does not promise future employment.

Name the conditions clearly so the intern is not surprised later. Common ones include completing Form I-9 employment verification, signing a confidentiality agreement, and passing a background check if the role requires it. The I-9 guide explains the paperwork, and employee background checks covers the rules around screening.

Add a short at-will or temporary statement, in plain language: the internship is for a fixed period, either side may end it earlier, and it does not guarantee a job at the end. If you hope to convert strong interns to staff, say that conversion is possible but not promised.

Mention any key policies, such as dress code, confidentiality and use of company equipment, or point to the employee handbook.

A plain-language outline you can adapt

Open warmly, state the offer, list the terms, explain how to accept, and close with a contact. One page is enough.

Here is a structure, with brackets where your details go:

• Opening. "Dear [Name], we are pleased to offer you the position of [Title] at [Company]."
• Terms paragraph. Start date, end date, schedule, location and pay rate.
• Role paragraph. What the intern will work on, who they report to, and what they should gain.
• Conditions paragraph. Paperwork, confidentiality, and the temporary nature of the position.
• Acceptance. "Please sign and return this letter by [date] to confirm." Add a signature and date line for both parties.
• Closing. A named contact for questions.

Have the letter reviewed by an attorney or HR advisor at least once, then reuse it as your template for future cohorts.

What to do after the intern accepts

Send a short onboarding note, prepare equipment and accounts, and plan the first week. A strong start makes a short internship far more productive.

Acceptance is the start of the work, not the end. Within a few days, send a welcome message that covers arrival time, parking or login details, and who will meet them. Set up accounts and tools before day one.

Plan the first week: introductions, a walk through the main project, and a first small task the intern can finish. Schedule a short weekly check-in with the supervisor, and a mid-point review. A written onboarding plan keeps this consistent from one intern to the next.

Paid interns also affect your cash flow. If you are adding several hires for a busy season, build the wages into your forecast. Owners who need to bridge payroll before seasonal revenue arrives sometimes look at working capital, but only when the payback is clear.