Circulatory System: Facts, Function & Diseases. The circulatory system is a vast network of organs and vessels that is responsible for the flow of blood, nutrients, hormones, oxygen and other gases to and from cells.
And I must make one more important point about all this maximum benefit business. I just said that the maximum Social Security benefit this year is $2,663. But there are many people getting more than that.
The maximum OASDI (Social Security) tax payable by an employee in 2018 would be $7979.40 ($128,700 x 6.2%). There is no maximum Social Security tax payable by an employer. Social Security Tax vs. FICA Tax The term Social Security tax or OASDI is often confused with FICA taxes, which include both Social Security and Medicare taxes.