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Idaho Paycheck Calculator 2026 — 5.8% Flat Tax

Net take-home in Idaho after federal tax, Idaho 5.8% flat state income tax, and FICA.

Annual Gross Salary ($)

Pay Period

Filing Status

State

401(k) Contribution (%) (%)

Gross Pay (Biweekly)

$2,500.00

Federal Tax (annual)

$5,293.50

State Tax (annual)

$3,770.00

FICA (SS + Medicare)

$4,972.50

401(k) Contribution

$3,900.00

Net Take-Home (Biweekly)

$1,810.15

FICA: Social Security 6.2% on first $176,100; Medicare 1.45% on all wages.

FICA: Social Security 6.2% on first $176,100; Medicare 1.45% on all wages.