By far, the most common cause of secondary amenorrhea is pregnancy. The test you took was negative, but I would repeat it to be sure. A second common cause of secondary amenorrhea is weight loss. If you have been aggressively dieting lately, or engaging in a rigorous exercise plan, your periods can stop.
Likewise, if you made millions in 2017, whether from cryptocurrency, your job, or any other source, you are probably at the highest tax bracket, currently 39.6%. Itâs important to understand that these are just marginal rates applicable to you as an individual, and that assets (like cryptocurrency) often qualify for a better rate, known as the capital gains rate.
The US has the worldâs highest corporate tax rate. That has some big firms going abroad for bargains. The United States has the worldâs highest corporate income tax rate at up to 35 percent. Japan recently lowered its corporate tax rate to 30 percent, and some US companies are moving operations to countries with lower rates such as Ireland, where the corporate tax rate is 12.5 percent.