Group 1 - The core viewpoint of the article is that the annual one-time bonus should be taxed according to the income from wages and salaries, and the tax year is determined by the year in which the bonus is paid [3] - The annual one-time bonus belongs to the income of the year in which it is distributed, meaning if a bonus is paid in 2024, it is considered income for the 2024 tax year [3] - There are two methods for calculating the tax on the annual one-time bonus: separate taxation and inclusion in comprehensive income [5][6] Group 2 - For separate taxation, the annual one-time bonus is divided by 12 to determine the applicable tax rate and quick deduction based on the monthly income tax rate table [5] - The monthly income tax rate table includes various income brackets with corresponding tax rates, ranging from 3% for income not exceeding 3,000 yuan to 45% for income exceeding 80,000 yuan [5] - For inclusion in comprehensive income, taxpayers can choose to add the annual one-time bonus to their total income for the year, which may result in different tax implications depending on their overall income [6][7]