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.
Prior to 1 April 2015, a lower rate was in place for small profits (broadly up to GBP 1.5 million). From 1 April 2015, this rate is unified with the main rate of corporation tax into a single rate of 20% for all profits.Where the taxable profits can be attributed to the exploitation of patents, a lower effective rate of tax applies. For 2015/16, the rate is 12%, reducing to 10% from 1 April 2017. non-resident company is subject to UK corporation tax only on the trading profits of a UK PE. Any other UK-source income received by a non-resident company is subject to UK income tax at the basic rate, currently 20%, without any allowances (subject to any relief offered by a double tax treaty [DTT], if applicable).