Paycheck calculatorAfter taxes and rentBoston › $100,000

$100,000 after taxes and rent in Boston (2026)

A $100,000 salary in Boston takes home $6,170 a month after federal tax, FICA, Massachusetts state tax. A typical one-bedroom costs $2,476 (HUD FY2026), leaving $3,694 a month for everything else — rent is 40.1% of take-home, above the 30% guideline. A studio leaves $3,811; a two-bedroom $3,229.

Your pay

Gross pay
$
State
Filing status
401(k) / 403(b) %
Bonus (one-off)
Pre-tax deductions & HSA
Health premiums / yr
HSA / yr
Other pre-tax / yr
Custom local rate %

401(k) lowers income tax but not Social Security/Medicare. Health premiums and HSA through a cafeteria plan lower both.

W-4 details (2020 or later form)
Step 3: dependents credit $
Step 4a: other income / yr
Step 4b: extra deductions / yr
Step 4c: extra withholding / check
Paychecks per year (for 4c)
Tax tables

Leave blank for standard withholding. Dependents: $2,000 per qualifying child, $500 per other dependent.

Take-home pay

74.0%take-home
$6,170
take-home pay a month
from a gross of $8,333
Effective tax rate 26.0%Marginal rate 35.1%Total taxes $25,960
Federal tax 13.2%FICA 7.6%State 5.1%Take-home 74.0%
LineMonthlyYearly
Gross pay$8,333$100,000
Federal income tax−$1,098−$13,170
Social Security (6.2%)−$517−$6,200
Medicare (1.45%)−$121−$1,450
Massachusetts state income tax−$390−$4,680
MA PFML−$38−$460
Take-home pay$6,170$74,040

$100,000 in Boston: monthly budget after rent

UnitHUD FMRLeft after rent / moRent share of take-home
Studio$2,359$3,81138.2%
One bedroom$2,476$3,69440.1%
Two bedrooms$2,941$3,22947.7%
Three bedrooms$3,526$2,64457.1%

Rents are HUD Fair Market Rents for FY2026 (the 40th-percentile gross rent, utilities included, for the metro area — a modest, typical unit, not a luxury one). Take-home is for a single filer with no pre-tax deductions, 2026 tables, city tax where it applies. The 30% rule compares rent with take-home pay, not gross.

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