United States · 2025
Idaho vs South Carolina Income Tax 2025
At a $100K salary, Idaho is about $1,312 cheaper in 2025.
State brackets
0%
Bracket 1
$0to$4,811
5.3%
Bracket 2
$4,811and up
State brackets
0%
Bracket 1
$0to$3,560
3%
Bracket 2
$3,561to$17,830
6.2%
Bracket 3
$17,830and up
At common incomes, what's the tax difference?
Federal + state income tax after the standard deduction, 2025. Excludes FICA.Compare your income
$
We'll pin your result at the top.Income
Idaho tax
South Carolina tax
Difference
$50,000single filer
$5,43210.9% effective
$6,29412.6% effective
$862 lessin Idaho
$100,000single filer
$17,65917.7% effective
$18,97219.0% effective
$1,312 lessin Idaho
$200,000single filer
$46,57723.3% effective
$48,79024.4% effective
$2,212 lessin Idaho
Federal income tax — same for both
7 brackets · 10–37% · applies on top of state rates
10%
to $11,925
12%
to $48,475
22%
to $103,350
24%
to $197,300
32%
to $250,525
35%
to $626,350
37%
$626,351+
ID
Idaho
SC
South Carolina