Missouri Paycheck Calculator

Use one pay period, the 2026 Form W-4 settings, and the Missouri certificate fields shown by the calculator. Federal, state, local, and supported employee payroll items are calculated separately so the estimate can be audited.

Inputs

Instant calculation

Required

Tax year

Gross pay for this pay periodUSD0.01 ≤ x ≤ 100000000

Pay frequency

Federal filing status

Pre-tax deductions this paycheckTotal deductions taken from net pay that reduce federal and state planning wages.USD0 ≤ x ≤ 100000000

FICA-exempt portion of pre-tax deductionsEnter only the portion excluded from Social Security and Medicare wages, such as qualifying Section 125 health, FSA, or HSA deductions. Do not include a traditional 401(k) contribution here.USD0 ≤ x ≤ 100000000

YTD Social Security wages before this paycheckUSD0 ≤ x ≤ 1000000000

YTD Medicare wages before this paycheckUsed independently for the employer-level $200,000 Additional Medicare Tax withholding threshold.USD0 ≤ x ≤ 1000000000

Form W-4 Step 2 checkbox

Form W-4 Step 3 annual creditsUSD0 ≤ x ≤ 100000000

Form W-4 Step 4(a) annual other incomeUSD0 ≤ x ≤ 100000000

Form W-4 Step 4(b) annual deductionsUSD0 ≤ x ≤ 100000000

Form W-4 Step 4(c) extra per paycheckUSD0 ≤ x ≤ 100000000

For married filing jointly, does spouse work?

Missouri earnings tax

Additional Missouri withholding per paycheckUSD0 ≤ x ≤ 100000000

Result

Instant calculation

Estimate basis: 2026 tax tables
Estimated net pay: $2,011.60
Federal income tax: $216.15
Social Security tax: $155.00
Medicare tax: $36.25
Additional Medicare tax: $0.00
Missouri income tax withholding: $81.00
Local income tax withholding: $0.00
Total estimated taxes and payroll premiums: $488.40

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How to use this calculator

Review the 2026 IRS and Missouri source dates, certificate entries, which deductions are actually FICA-exempt, every year-to-date wage base, locality, exemptions, and whether the employer pays any employee program premium.

Read the estimate basis, estimated net pay, federal and FICA items, Missouri income tax withholding, supported local and payroll-program items, and total estimated taxes and premiums.

Formula

Missouri estimated net pay = gross pay − pre-tax deductions − 2026 federal withholding − Social Security − Medicare − calculated Missouri withholding − supported local taxes and employee payroll premiums.

Worked example

If a Missouri pay period has $2,000 gross pay, no pre-tax deduction, and the displayed federal, FICA, state, and local taxes total $410, estimated net pay is $1,590.

Assumptions and limits

Missouri withholding must use the selected year’s state withholding tables; applicable local earnings taxes require a separate locality setting. This is a 2026 planning estimate, not payroll or tax advice; employer benefit treatment, reciprocity, exemptions, supplemental wages, and unlisted local programs can change the actual check.
Missouri Paycheck Calculator treats the entered values as estimates and does not infer missing project, account, or personal details.
Calculations retain working precision except where the cited method requires an intermediate rounding step; displayed values are then formatted separately. Source rules and dated rates must be rechecked when they change.

Sources

Internal Revenue Service: Publication 15-T, Federal Income Tax Withholding MethodsFederal payroll withholding methods and tax-year tables. Reviewed 2026-08-14.
Missouri Department of Revenue: Employer Withholding TaxThe Employer Withholding Tax rules and withholding guidance. Reviewed 2026-08-14.
Internal Revenue Service: Publication 15-T (2026), Federal Income Tax Withholding MethodsOfficial formula or method source used by this calculator. Reviewed 2026-08-14.
Social Security Administration: Contribution and Benefit Base DeterminationOfficial formula or method source used by this calculator. Reviewed 2026-08-14.
Internal Revenue Service: Questions and Answers for the Additional Medicare TaxOfficial formula or method source used by this calculator. Reviewed 2026-08-14.
Internal Revenue Service: Publication 15-B (2026), Employer's Tax Guide to Fringe BenefitsOfficial formula or method source used by this calculator. Reviewed 2026-08-14.
Missouri Department of Revenue: 2026 Missouri Withholding Tax FormulaOfficial formula or method source used by this calculator. Reviewed 2026-08-14.
City of St. Louis: Earnings Tax informationOfficial formula or method source used by this calculator. Reviewed 2026-08-14.
City of Kansas City, Missouri: Earnings Tax informationOfficial formula or method source used by this calculator. Reviewed 2026-08-14.

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Verification

How this calculator is checked

Trust comes from reproducible evidence, not model confidence. You can inspect the formula, assumptions, worked example, and cited sources on this page.

Versioned calculationFormula logic is kept separate from the interface and covered by automated registry and behavior checks.
Cited evidenceSources linked for independent checking: 9.
Transparent AI useAI may assist drafting or adversarial review. Agreement between models is not proof, and no human expert review is claimed unless a named reviewer is shown.

Frequently asked questions

How does the Missouri Paycheck Calculator work?

What information should I enter in the Missouri Paycheck Calculator?

Enter tax year, gross pay, pay frequency, filing status, total pre-tax deductions, the portion exempt from FICA, separate year-to-date wage bases, Form W-4 Steps 2 through 4, and the displayed Missouri withholding-certificate, locality, and payroll-program settings, then verify the 2026 IRS and Missouri source dates, certificate entries, which deductions are actually FICA-exempt, every year-to-date wage base, locality, exemptions, and whether the employer pays any employee program premium.

What should I verify before using this Missouri Paycheck Calculator result?

Missouri withholding must use the selected year’s state withholding tables; applicable local earnings taxes require a separate locality setting. This is a 2026 planning estimate, not payroll or tax advice; employer benefit treatment, reciprocity, exemptions, supplemental wages, and unlisted local programs can change the actual check.

Last updated 2026-08-25 · 2026.3.0 · content-2026-08-14 · Published by YunFanLabs

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