Intern, Tax Summer 2026

About the role#

Mariner is seeking a Tax Intern for the Summer 2026 term. This full-time, paid internship provides hands-on experience in tax planning and compliance, working directly with professional teams to support client needs.

What you'll do#

• Collaborate with tax professionals to learn about personal, fiduciary, S-Corporation, partnership, private foundation, and gift tax returns.
• Assist in the preparation of tax returns, income tax projections, estimated tax vouchers, and extension forms.
• Coordinate with wealth teams to support integrated tax and wealth planning for clients.
• Participate in special projects that directly support client objectives.

What you'll need#

• Currently pursuing a bachelor’s or master’s degree in Accounting, Finance, Business Administration, or a related field, with an expected graduation date around May 2026.
• Demonstrated leadership experience through work or extracurricular activities.
• Basic knowledge of accounting or tax principles.
• Strong aptitude for working with numbers and performing accurate, detailed calculations.
• Excellent written and verbal communication skills, with the ability to explain findings clearly.
• Proficiency in Microsoft Excel and Word, and a willingness to learn specialized tax software.
• Ability to work effectively in a team environment while maintaining confidentiality and discretion.

Location & details#

• Location: United States
• Modality: On-site
• Term: Summer 2026
• Compensation: $26 per hour
• Eligibility: Must be authorized to work in the U.S. without employer sponsorship.