Missouri Paycheck Calculator (2026 Take-Home Pay)

Missouri packs eight separate brackets into its graduated income tax, but they're compressed tightly together, so the top marginal rate tops out at a modest 4.70%, lower than many states with far fewer brackets. The Missouri Paycheck Calculator works through all eight brackets alongside federal withholding and FICA to compute an exact net-pay figure.

That combination, many brackets but a low ceiling, means Missouri's effective tax rate rises in small, gradual steps without ever climbing especially high, even for higher earners. It's a different trade-off than a state like Hawaii, which also uses many brackets but reaches a much higher top rate.

Missouri has eight brackets, but they are so narrow that they are nearly invisible on a working salary: each of the first seven is about $1,273 wide, so a wage earner passes through all of them inside the first $9,000 and pays the top 4.7% rate on the rest. Kansas City and St. Louis also levy an earnings tax on wages, which this calculator does not include. The state schedule works out to:

The state-level figure takes four steps:

1. FICA Payroll Tax Computation: - Social Security (OASDI): 6.20% withheld on wages up to the 2026 statutory wage base ($184,500). - Medicare (HI): 1.45% withheld on all gross earnings (no wage cap), plus 0.90% Additional Medicare Tax on earnings exceeding $200,000 (single) or $250,000 (married filing jointly).
2. Federal Income Tax Withholding: Evaluated using 2026 progressive federal tax brackets (10%, 12%, 22%, 24%, 32%, 35%, 37%) after applying standard deduction thresholds ($16,100 single / $32,200 married joint).
3. Missouri State Income Tax Withholding: Run against the 2026 Missouri schedule, eight narrow brackets from 1.5% reaching the 4.7% top rate at $8,911 of taxable income.
4. Pay Period Proration: Annual net compensation is divided across the designated pay frequency (26 bi-weekly, 24 semi-monthly, 12 monthly, or 52 weekly pay periods).

Consider an employee in Missouri earning $75,000 annually, paid bi-weekly (26 paychecks per year), filing single, with $3,500 in annual pre-tax 401(k) contributions.

1. Gross pay per paycheck. $75,000 ÷ 26 pay periods = $2,884.62 before any withholding.
2. Pre-tax deduction. The $3,500 annual 401(k) contribution reduces each paycheck by $134.62 and also shrinks the wages used to calculate federal and state income tax; FICA is still assessed on the full gross amount.
3. FICA payroll taxes. Social Security withholds 6.2% of gross pay ($178.85) and Medicare withholds 1.45% ($41.83), for $220.67 per paycheck.
4. Federal income tax withholding. Applying the 2026 IRS withholding tables to the reduced taxable wage withholds $265.38 per paycheck.
5. Missouri state tax withholding. Missouri's withholding tables apply to the reduced taxable wage, withholding $122.30 per paycheck.
6. Net take-home pay. $2,884.62 gross, minus $134.62 pre-tax, minus $220.67 FICA, minus $265.38 federal tax, minus $122.30 state tax leaves $2,141.64 per paycheck, which comes to $55,682.63 per year, an effective total tax rate of 21.09%.

The Second Month, And The Twelfth

Missouri stacks eight brackets into the first $8,911 of taxable income, so the entire ladder is climbed within the first six weeks of the year and the rest is flat 4.7%.

Step 7 -- Two months of cumulative pay. The schedule's first row shows $6,250.00 of cumulative gross against $4,640.22 of cumulative take-home. Row two doubles both: $12,500.00 gross, $9,280.44 take-home, with $3,219.56 accumulated on the deduction side.

Step 8 -- The full year. By month twelve the schedule reaches $75,000.00 of cumulative gross and $55,682.63 of cumulative take-home, adding $4,640.22 every month without variation.

Step 9 -- What the year actually withheld. The cumulative deduction column closes at $19,317.37. That column carries the $3,500 pre-tax 401(k) contribution alongside the tax, so tax alone is $19,317.37 - $3,500 = $15,817.37, an effective total tax rate of 21.09% on $75,000.00 of gross pay.

Step 10 -- Why the monthly increment never changes. Every month in the schedule adds the same amount, and that is a property of the engine, not just of this salary. The $184,500 Social Security wage base and the $200,000 Additional Medicare threshold are applied to annual wages first, and only then is the annual result divided across twelve months. A real payroll ledger would show take-home step up in the month Social Security stops; this schedule never does. At $75,000 the point is academic, because gross reaches neither limit. Above $184,500, or above $200,000 filing single, it would matter and this schedule would still run flat.

$55,682.63 is the annual result. Missouri's brackets are so compressed that they function as a small fixed discount against the $15,817.37 total rather than a progressive structure.

Missouri's eight brackets are all behind a $75,000 earner, so the state line behaves like a flat 4.70% and every bend in the sweep comes from the federal schedule.

The marginal cost of the next unit. Raising gross salary from $75,000 to $76,000 takes annual take-home from $55,682.63 to $56,339.13, so each additional $1,000 of Missouri salary is worth $656.50 in the hand. The $343.50 withheld breaks down as roughly 22 cents of federal income tax, 7.65 cents of FICA and 4.7 cents of Missouri tax per marginal dollar. At $100,000 the engine returns $72,095.13 of annual take-home at an effective total tax rate of 24.40%, against 21.09% at $75,000.

Pricing the pre-tax deferral. Raising the annual pre-tax contribution from $3,500 to $8,500 moves annual take-home from $55,682.63 to $52,017.63. Diverting $5,000 into the plan costs $3,665.00 of spendable pay, with $1,335.00 funded by tax that is no longer withheld, an effective subsidy of 26.70%. The engine reduces the federal and Missouri taxable wage by the contribution and leaves FICA on the full gross, which is why the subsidy is below the sum of the two marginal income tax rates.

A filing-status limitation, and why Missouri escapes it. Switching to married filing jointly moves annual take-home from $55,682.63 to $58,362.63, a gain of exactly $2,680.00, all of it federal, with Missouri withholding unchanged at $122.30 per paycheck. The config calls the state primitive without a filing status, so the single schedule is used for every filer. Missouri publishes one rate chart for all statuses and does not double its bracket widths, so the state figure is correct here; the same code path overstates joint withholding on the Maryland and Minnesota pages, where the joint schedules genuinely differ.

Pay frequency changes the cheque, not the year. Moving from bi-weekly to monthly takes the headline from $2,141.64 to $4,640.22 while annual take-home stays at exactly $55,682.63.

What the $122.30 leaves out. The engine runs the reduced taxable wage through Missouri's bracket chart with no state standard deduction and no personal exemption, so the figure is higher than a real Missouri withholding calculation would produce. Kansas City and St. Louis each levy a 1% earnings tax on wages earned within the city, and neither appears in any output here. For a resident of either city that is roughly $750 a year on this salary, which would take annual take-home below $55,000 and is more than half the size of the entire state income tax line.

• Local municipal, city, or county wage taxes where applicable.
• Post-tax wage garnishments (child support, tax levies, student loans).
• Voluntary post-tax deductions (Roth 401k, charitable giving, supplemental insurance).

• Confusing Bi-Weekly with Semi-Monthly Pay: Bi-weekly pay results in 26 paychecks per year (two 3-paycheck months), whereas semi-monthly pay results in 24 equal paychecks.
• Failing to Update Form W-4: Inaccurate withholding allowances on Form W-4 can lead to substantial underpayment penalties or large unexpected tax bills.
• Forgetting Pre-Tax Deduction Benefits: Contributions to 401(k) and HSA accounts directly reduce taxable income, lowering both federal and state tax burdens.
• Overlooking Additional Medicare Tax: Failing to anticipate the 0.9% surtax on high-earning households with multiple income sources.

• Internal Revenue Service (IRS): Publication 15 (Circular E) and Publication 15-T (2026). irs.gov/publications/p15
• Social Security Administration (SSA): 2026 Social Security Wage Base Limit. ssa.gov

Also consulted: Missouri Department of Revenue: Employer Withholding Tax Tables (2026).