Invoice Template for Interns and Trainees

What a good one includes

• Your full name and contact information, alongside the specific host company name and the department or supervisor you are reporting to.
• A sequential, unique invoice number and the exact date of issue to help the finance team track and process your payment.
• An itemized breakdown of your billable hours, completed projects, or specific approved expenses with corresponding dates and rates.
• Clear payment terms, such as 'Due upon receipt' or 'Net 14,' specifying exactly when you expect the funds to be transferred.
• Explicit instructions on how you wish to be paid, including direct deposit bank details, your routing number, or a secure digital payment link.
• Scanned copies of receipts or pre-approval emails attached directly to the document if you are billing for reimbursable internship expenses.

Common mistakes to avoid

• Failing to specify exactly what tasks or hours are being billed, which forces the accounting team to delay your payment to ask for clarification.
• Forgetting to include necessary tax identifiers, like your Social Security Number or an EIN, if your contract work classifies you as an independent contractor.
• Leaving off a clear due date, which can lead to your invoice sitting at the bottom of the finance department's payment queue.
• Sending a messy, unaligned document that looks unprofessional and undermines the credibility you built during your internship.

Frequently asked questions