Side-by-side comparison of income tax, property tax, sales tax, capital gains, and retirement treatment between Massachusetts and Illinois for tax year 2026. Use the calculator below to estimate how much you would save (or pay) after relocating.
| Tax | Massachusetts | Illinois |
|---|---|---|
| State income tax (effective) | 5.00% | 4.95% |
| Long-term capital gains | 5.00% | 4.95% |
| Property tax (effective) | 1.14% | 2.27% |
| Combined sales tax | 6.25% | 8.88% |
| Retirement income | ss-exempt | fully-taxable |
| Income system | flat | flat |
Massachusetts total tax
$20,315
Illinois total tax
$20,266
Massachusetts state tax
$4,945
Illinois state tax
$4,896
Difference
−$49
Illinois saves you money
As % of income
0.04%
Federal tax is identical in both columns and excluded from the difference. Numbers use 2026 IRS brackets, state effective rates, and the 3.8% NIIT where applicable.
Moving from Massachusetts to Illinois could save about $49 per year on this profile — roughly 0.04% of gross income.
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