The dollar limit for contributions to a medical FSA for 2015 is $2,550. Each spouse can contribute up to this limit as long as each works for an employer offering such a plan. This enables a couple to exclude from their taxable compensation a total of $5,100. This is so even if both spouses work for the same company.
Gross income less allowable adjustments, such as IRA, alimony, and Keogh deductions. AGI determines whether various tax benefits are phased out, such as personal exemptions, itemized deductions, and the rental loss allowance and modified adjusted gross income (MAGI).