Which federal bracket this lands in
The $16,100 standard deduction leaves $108,900 of taxable income, which puts the last dollar in the 24% federal bracket. Only $3,200 of it is actually taxed at 24% — the income below $105,700 is taxed at the lower rates first, which is why the effective rate lands well under the bracket number. The 24% band runs to $201,775, so a raise of about $92,875 would be needed before any dollar is taxed at 32%.
Where this sits in Connecticut's schedule
Connecticut runs a graduated schedule of 7 bands. After $0 of state deductions it taxes $125,000, putting the top dollar in the 6% band and producing $6,600 of state tax — 5.28% of gross pay. Its 6% band ends at $200,000 of state taxable income, $75,000 above where this salary lands.
Connecticut adds tax above the schedule here
$350 of the state tax on this salary comes from a recapture provision rather than the bracket table — Connecticut claws back the benefit of its lower bands once income passes a threshold this salary exceeds. A bracket-only calculation understates the bill by that amount, which is why it is reported as its own line.
Marginal rate is not the rate paid
Federal income tax of $18,734 on $125,000 of gross pay is 14.99% of the salary, against a 24% marginal bracket — a gap of about 9.0 points. The bracket describes the next dollar earned, not the pay already earned, and quoting the bracket as the tax rate overstates the bill by $11,266 at this salary.
What the next raise is worth here
Stacking the 24% federal band, Connecticut's 6%, 1.45% Medicare and 6.2% Social Security gives a combined marginal rate of about 37.65%. A $5,000 raise on top of this salary would therefore add roughly $3,118 of take-home pay, not $5,000 — a distinction worth holding on to when comparing offers.