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US law
Illinois
Regulations
Title 86 — REVENUE
CHAPTER I: DEPARTMENT OF REVENUE
Part 100 — INCOME TAX
Subpart N
Illinois · Regulations
Subpart N
1 section
1 section
86 Ill. Adm. Code 100.4100
Taxable Years (IITA Section 401)
Subpart N | Illinois Regulations | Justis AI