The main purpose of this legislation is to permanently increase the standard deduction for taxpayers in the United States. The goal is to provide financial relief to American families by allowing them to deduct a larger amount from their taxable income, which can lower their overall tax liability. Key provisions of the legislation include raising the standard deduction amounts significantly. For individuals, the standard deduction is increased from $4,400 to 8,000. For married couples filing jointly, the deduction rises from $3,000 to 2,000.