Employees  will be able to contribute up to $2,750 to a health flexible spending account (FSA) in 2021, the same as in 2020, the Internal Revenue Service (IRS)  announced in Revenue  Procedure 2020-45. However, changes were made to certain other  benefits thresholds and limits.
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Get Your Report Now!The IRS is  raising to $235,000 (from $230,000) the annual compensation that makes a  company’s employee, other than an officer, a “control employee” for commuting valuation purposes, the IRS  announced separately in Notice 2020-79.
For officers,  the control employee threshold remains at $115,000. The threshold that defines “highly  compensated employee” under Section 414(q)(1)(B) will still be $130,000, and  the dollar limit that defines a “key employee” in a top-heavy plan stays at  $185,000. 
The year  2021 will see higher thresholds for adoption-related tax credits and  exclusions. Rev. Proc. 2020-45 raises to $14,440 (from $14,300) the income  exclusion and tax credit for qualifying adoption-related expenses. The income  threshold at which the credit begins to be phased out now will be $216,660, vs.  $214,520 in 2020.
The  monthly limits on the qualified transportation fringe  benefit, as well as the qualified parking benefit, will still be $270 in  2021. Congress enacted permanent parity between these two in 2015.
Rev. Proc.  2020-45 raises certain long-term care (LTC) insurance premium amounts that will  be deductible in 2021. The limit is raised to $450 (from $430) for taxpayers  aged 40 or younger, and the amounts increase for the other age groups as well, to  a maximum of $5,640 for those older than 70. The per diem limitation on LTC  insurance payments also increases, from $380 to $400.
The annual  limit on payments and reimbursements under a qualified small employer health  reimbursement arrangement is raised to $5,300 for self-only and $10,700  for family coverage, an increase of $50 and $100, respectively, from 2020  levels.
The 2021  contribution limits for health savings accounts (HSAs), along with the adjusted  minimum deductibles and maximum out-of-pocket limits for HSA-eligible  high-deductible health plans, were announced earlier  this year. So was an increase in the permissible FSA carryover amount from $500  to $550.
Social  Security Adjustments
The  maximum wage base for Social  Security tax in 2021 will be $142,800, up from  $137,700 in 2020, according to a separate announcement from the Social Security  Administration (SSA). 
The wage base is the maximum amount  of an individual’s gross income that can be subject to Social Security tax on  the employer and employee. Employers and employees each pay a FICA tax  comprising a Social Security tax of 6.2% on the employee’s earnings up to the  wage base, plus a Medicare tax of 1.45% on all earnings. Under the new wage  base, the maximum possible Social Security tax will be $8,853.60 (up from $8,537.40  in 2020).
Other changes announced by the SSA include a 1.3% cost-of-living increase in Social  Security benefit payments, as well as increases in the retirement earnings test  exempt amounts and the Social Security disability thresholds.