Assisting Teachers and Home Office Modernization for Employees Act or the AT HOME Act This bill allows employers who have not more than 150 full-time employees a tax credit for 25% of their qualified remote work expenses. The bill defines qualified remote work expenses as expenses paid or incurred to allow employees to work from a worksite other than a shared office space, that are necessary to allow for continuation of normal business functions, are in response to COVID-19 (i.e., coronavirus disease 2019), and occur after February 15, 2020, and before January 1, 2021. The bill also extends such tax credit to tax-exempt entities. The bill also allows an income-based tax deduction for remote work expenses.