House Bill No. 5445 proposes significant amendments to the personal income tax regulations, particularly focusing on the treatment of amortizable bond premiums and first-time homebuyer savings accounts. The bill repeals subparagraph (B) of subdivision (20) of subsection (a) of section 12-701, replacing it with new provisions that allow taxpayers to subtract amortizable bond premiums for taxable years on bonds whose interest is subject to state tax but exempt from federal income tax, effective January 1, 2027. This change also clarifies that interest on indebtedness incurred to purchase or carry such obligations is included in the subtraction. Additionally, the bill introduces a deduction for contributions made to first-time homebuyer savings accounts, with limits set at $2,500 for individuals and $5,000 for married couples filing jointly, and allows for deductions on withdrawals used for eligible costs, contingent on income thresholds.

Moreover, the bill expands the deduction for amortizable bond premiums on out-of-state government bonds, making it accessible to all taxpayers rather than just those who incurred the premium as a business expense. This amendment is expected to result in a General Fund revenue loss of approximately $100,000 annually starting in fiscal year 2028. The effective date for these changes is also set for January 1, 2027, applying to tax years commencing on or after that date. Overall, HB5445 aims to simplify the tax process for individuals, particularly those dealing with specific types of bond investments and first-time home purchases, while aligning state tax law with federal regulations.