Estimated Income Tax Brackets and Rates In 2017, the income limits for all tax brackets and all filers will be adjusted for inflation and will be as follows (Table 1). The top marginal income tax rate of 39.6 percent will hit taxpayers with taxable income of $418,400 and higher for single filers and $470,700 and higher for married couples filing jointly.
Many medical conditions can cause secondary excessive daytime sleepiness, including head trauma, stroke, tumors, inflammatory conditions, encephalitis, and genetic and neurodegenerative diseases. Psychiatric conditions, especially depression, can also result in excessive daytime sleepiness.
Narcolepsy is more common than you probably realizeâaffecting about 1 in 2,000 peopleâand can cause you to experience excessive daytime sleepiness and a sudden loss of muscle control (called cataplexy), often triggered by strong emotions.