For the most part, Archer MSAs are treated the same as HSAs for tax purposes. For starters, you can get a tax deduction for contributions you make to your Archer MSA, even if you don’t itemize your deductions.
Also, interest and earnings you receive in your Archer MSA account grow tax free and distributions are tax free if they’re for qualified medical expenses.
Lastly, if your employer makes contributions to your Archer MSA on your behalf, those contributions aren’t included in your gross income for tax purposes. Just remember that you and your employer can’t make contributions to your Archer MSA in the same year.