It will not have much--if any-- effect on your refund or tax due.
ttlc.intuit.com/questions/1901071-can-i-take-a-deduction-for-housing-an-exchange-student
From the IRS
https://www.irs.gov/publications/p526#en_US_2012_publink1000229664
Expenses Paid for Student Living With You
You may be able to deduct some expenses of having a student live with you. You can deduct qualifying expenses for a foreign or American student who:
- Lives in your home under a written agreement between you and a qualified organization (defined later) as part of a program of the organization to provide educational opportunities for the student,
- Isn't your relative (defined later) or dependent (also defined later), and
- Is a full-time student in the twelfth or any lower grade at a school in the United States.
You can deduct up to $50 a month for each full calendar month the student lives with you. Any month when conditions (1) through (3) are met for 15 or more days counts as a full month.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
