Five Tax Administration Issues State Lawmakers Should Address in 2021 (State Tax Notes, January 11, 2021, p.145 Model Legislation for One-Month Extension Beyond Federal Extension for State Corporate Income Tax Returns Model Legislation for 30-Day Safe Harbor for Nonresident Employees and Their Employers Model Legislation for Reporting Adjustments to Federal Taxable Income and Federal Partnership Audit Adjustments (MTC Model) Model Legislation for Utilizing Streamlined Sales and Use Tax Services Act Model Legislation for Electronic Signatures