The amount that individuals can save by depositing money into their FSA or HSA depends on their federal tax bracket, which is determined by their income and filing type. Below are the federal tax rates for 2026 for single and joint filers.

2026 Federal Income Tax Brackets
Rate Single Married Filing Jointly
10% $0 – $11,925 $0 – $23,850
12% $11,925 – $48,475 $23,850 – $96,950
22% $48,475 – $103,350 $96,950 – $206,700
24% $103,350 – $197,300 $206,700 – $394,600
32% $197,300 – $250,525 $394,600 – $501,050
35% $250,525 – $626,350 $501,050 – $751,600
37% $626,350 and up $751,600 and up