Ill. Admin. Code tit. 86, § 100.2165
1) Qualifying Pupils
A) "Qualifying pupils" shall mean individuals who are:
2) "Custodian" of qualifying pupils shall mean an Illinois resident(s) who is a parent, the parents, a legal guardian, or the legal guardians of the qualifying pupils. (IITA Section 201(m))
4) Qualified Education Expenses
A) "Qualified education expenses" shall mean amounts incurred on behalf of a qualifying pupil in excess of $250 for tuition, book fees, and lab fees at the school in which the qualifying pupil is enrolled during the regular school year. (IITA Section 201(m)) Amounts incurred for tuition, book fees and lab fees by a family that is the custodian of more than one qualifying pupil may aggregate all tuition, book fees and lab fees incurred by the family in arriving at qualified education expenses eligible for the credit.
c) Examples. Calculation of the education expense credit may be illustrated by the following examples. For each example, it is assumed that the taxpayer's adjusted gross income for the taxable year is not greater than $500,000 (in the case of each spouse filing a joint federal income tax return) or $250,000 (in the case of all other taxpayers).
EXAMPLE 1. Family A is the custodian of 2 qualifying pupils. Family A incurs a total of $6,000 in tuition, book fees and lab fees for the education of both pupils during the calendar year. The first $250 incurred for tuition, book fees and lab fees is not included as a qualified education expense. The balance of $5,750 ($6,000 - $250) multiplied by 25% equals $1,437.50. Family A may only claim the maximum tax credit allowable of $500 (for taxable years ending prior to December 31, 2017) or $750 (for taxable years ending on or after December 31, 2017).
EXAMPLE 2. Family B is the custodian of one qualifying pupil. Family B incurs a total of $2,250 in tuition, book fees and lab fees for the education of the qualifying pupil during the calendar year. Family B also incurs $200 for the purchase of a musical instrument used by the qualifying pupil while participating in the school band. The $200 incurred for the purchase of a musical instrument is an expense that does not qualify for the credit. The first $250 incurred for tuition, book fees and lab fees is not included as a qualified education expense. The balance of $2,000 ($2,250-$250) multiplied by 25% equals $500. Family B may claim a credit for the entire $500.
EXAMPLE 3. Family C is the custodian of 4 qualifying pupils. Family C incurs a total of $1,000 in book fees and lab fees for the education of all 4 qualifying pupils during the calendar year. Family C also incurs a total of $50 for the purchase of books used in completing book reports required by the school. The $50 incurred for the purchase of books is an expense that does not qualify for the credit. The first $250 incurred for book fees and lab fees is not included as a qualified education expense. The balance of $750 ($1,000 - $250) multiplied by 25% equals $187.50. Family C may claim a tax credit of $187.50.
d) To aid a custodian in claiming the education expense credit, a school should provide to the custodian a written receipt documenting education expenses paid to the school by the custodian on behalf of qualifying pupils during the calendar year. The written receipt should be provided to the custodian on or before January 31 of the succeeding calendar year. When a school provides a written receipt to a custodian, it should use the form prescribed by the Department and include the following information:
3) the name and address of the custodian;
(Source: Amended at 44 Ill. Reg. 2845, effective January 30, 2020)