Part 18.1.2 ADMINISTRATION AND ENFORCEMENT 18.1.2.010 Title. 18.1.2.020 Purpose. 18.1.2.030 Definitions. 18.1.2.040 Establishment of Tax Office. 18.1.2.050 Powers and Authority. 18.1.2.060 Tax Administrator. 18.1.2.070 Tax Office Budget. 18.1.2.080 Rulings, Orders, Instructions and Regulations. 18.1.2.090 Receipts and Accounting. 18.1.2.100 Address for Notice, Filing and Payments. 18.1.2.110 Taxpayer Responsibilities for registration, designation of agent, required records. 18.1.2.120 Timeliness of Notice, Filing and Payments. 18.1.2.130 Tax Payment Date. 18.1.2.140 Extensions. 18.1.2.150 Delinquent Taxpayer. 18.1.2.160 Assessment of Taxes. 18.1.2.170 Limited Time Period for Assessments and Collections 18.1.2.180 Request for Refund. 18.1.2.190 Protest Procedure. 18.1.2.200 Prohibition from Law Suits. 18.1.2.210 No Waiver of Sovereign Immunity in Other Courts. 18.1.2.220 Audits. 18.1.2.230 Lien for Taxes. 18.1.2.240 Security for Payment. 18.1.2.250 Confidentiality. 18.1.2.260 Civil Penalties, Interest and Administrative Costs. 18.1.2.270 No Adoption of State Law. 18.1.2.280 Effective Date. 18.1.2.290 Repeal of Inconsistent Law or Provisions. 18.1.2.300 Severability. 18.1.2.310 Amendment.