Why 100k is a good comparison point
At 100k, the tax difference between no-tax states and higher-tax states usually becomes clearer than it is at lower salary bands. The state layer is easier to see because the paycheck is larger and the federal part is already substantial.
No-tax states rise toward the top
When you compare the same salary across states, no-tax states often look strong on pure take-home pay. That does not automatically make them the best choice, but it does make them useful comparison anchors.
Higher-tax states can still win on total opportunity
A stronger state economy, higher nominal salaries, or better benefits can still make a higher-tax state attractive. Tax is important, but it is not the whole decision.
Monthly view matters for real life
People often think in annual salary, but monthly take-home is where lifestyle pressure shows up. Housing, childcare, debt, and savings all hit the monthly number first.
Use a state page after this
Once you know roughly how 100k compares by state, open the exact state page and adjust filing status, deductions, and any local tax rate. That is where the rough comparison turns into a more personal estimate.