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A flexible spending account (FSA), also known as a flexible spending arrangement, is one of a number of tax-advantaged financial accounts that can be set up through a cafeteria plan of an employer in the United States.
Health Savings Account (HSA). A medical savings account available to taxpayers who are enrolled in a High Deductible Health Plan. The funds contributed to the account aren't subject to federal income tax at the time of deposit. Funds must be used to pay for qualified medical expenses. Unlike a Flexible Spending Account (FSA), funds roll over year to year if you don't spend them.