United States · 2026
South Carolina vs Idaho Income Tax 2026
At a $100K salary, Idaho is about $299 cheaper in 2026.
State brackets
0%
Bracket 1
$0to$3,640
3%
Bracket 2
$3,640to$18,230
6%
Bracket 3
$18,230and up
State brackets
0%
Bracket 1
$0to$4,811
5.3%
Bracket 2
$4,811and up
At common incomes, what's the tax difference?
Federal + state income tax after the standard deduction, 2026. Excludes FICA.Compare your income
$
We'll pin your result at the top.Income
South Carolina tax
Idaho tax
Difference
$50,000single filer
$6,16412.3% effective
$6,21512.4% effective
≈ even
$100,000single filer
$18,51418.5% effective
$18,21518.2% effective
$299 lessin Idaho
$200,000single filer
$48,07824.0% effective
$47,07923.5% effective
$999 lessin Idaho
Federal income tax — same for both
7 brackets · 10–37% · applies on top of state rates
10%
to $12,400
12%
to $50,400
22%
to $105,700
24%
to $201,775
32%
to $256,225
35%
to $640,600
37%
$640,601+
SC
South Carolina
ID
Idaho