Here's a summary: Income Tax Brackets and Standard Deductions Income Tax Brackets: The 37% top tax rate now applies to: Incomes above $609,350 for singles. Incomes above $731,200 for married couples filing jointly. Standard Deductions: Singles: $14,600. Married couples filing jointly: $29,200. Heads of households: $21,900. Contribution Limits and Credits 401(k) Contribution Limit: Increased to [...]