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Missouri Bonus Tax Calculator 2025

Gross Bonus Amount: $0.00
Federal Income Tax: -$0.00
Social Security Tax (6.2%): -$0.00
Medicare Tax (1.45%): -$0.00
Additional Medicare Tax (0.9%): -$0.00
Missouri State Tax (4.7%): -$0.00
Local Earnings Tax (1%): -$0.00
Total Taxes: -$0.00
Net Bonus (Take-Home): $0.00
Effective Tax Rate: 0.00%
How to Use This Calculator
1
Enter Bonus Amount
Input the gross amount of your bonus before any taxes or deductions.
2
Add Salary Information
Enter your annual salary and select your filing status for accurate calculations.
3
Configure Settings
Choose your pay frequency, allowances, and calculation method preferences.
4
Review Results
View detailed tax breakdown and your final take-home bonus amount.

Missouri Bonus Tax Rate 2025: How Are Bonuses Taxed in Missouri?

Bonuses in Missouri are taxed at a 22% federal rate for amounts under $1 million, plus Missouri state income taxes ranging from 2% to 4.7% in 2025.

Your bonus gets taxed the same as your regular pay, including income taxes, Medicare, and Social Security.

Federal Tax on Missouri Bonuses

The federal bonus tax rate is 22% for bonuses under $1 million. This is called the flat rate method.

Your employer takes out 22% right away when they pay your bonus.

If your total bonuses are higher than $1 million, the first $1 million gets taxed at 22%, and every dollar over that gets taxed at 37%.

Here’s how it works:

  • Bonus under $1 million = 22% federal tax
  • Bonus over $1 million = 22% on first $1 million, then 37% on the rest

Missouri State Tax on Bonuses

Missouri state income tax rates range from 0% to 4.7% in 2025. The top rate dropped from 4.8% to 4.7% effective January 1, 2025.

Your bonus gets added to your regular income for Missouri tax purposes. The more you make total, the higher your Missouri tax rate.

Missouri Tax Brackets for 2025:

  • 0% on income up to certain thresholds
  • 2% to 4.7% on higher income amounts

Other Taxes on Your Missouri Bonus

Besides income taxes, your bonus also gets hit with:

Social Security Tax: 6.2% (up to annual wage limit)

Medicare Tax: 1.45% (no limit)

Additional Medicare Tax: 0.9% (if you make over $200,000)

Kansas City and St. Louis Extra Tax

If you work in Kansas City or St. Louis, you pay an extra 1% earnings tax. This applies to your bonus too.

So your total tax on a bonus could be:

  • 22% federal
  • Up to 4.7% Missouri state
  • 1% city tax (KC or STL only)
  • 7.65% Social Security and Medicare

How Your Employer Calculates Bonus Tax

Your employer can use two methods:

Flat Rate Method: They take out 22% federal tax right away. This is the most common way.

Aggregate Method: Your employer adds your bonus to your regular paycheck and uses the total amount to calculate withholding. This often means more tax gets taken out.

Will You Get Money Back?

The 22% flat rate is just withholding. It’s not your final tax bill.

When you file your tax return, you’ll calculate your real tax rate. If too much was taken out, you get a refund. If not enough was taken out, you owe more.

Your actual tax rate depends on your total income for the year.

Example: $5,000 Bonus in Missouri

Let’s say you get a $5,000 bonus:

  • Federal tax withheld: $1,100 (22%)
  • Missouri tax: $50-$235 (depends on your income)
  • Social Security: $310 (6.2%)
  • Medicare: $72.50 (1.45%)
  • Total taxes: About $1,532-$1,717
  • You take home: About $3,283-$3,468

Key Things to Remember

Your bonus is taxed as regular income on your tax return. The 22% withholding is just an estimate.

Missouri’s standard deduction for 2025 is $14,600 for single filers and $29,200 for married filing jointly. This helps reduce your taxable income.

Save some of your bonus for taxes if you think you’ll owe more when you file your return.

Missouri Bonus Tax 2025: FAQs

What is the Missouri bonus tax rate for 2025?

Missouri uses a flat tax rate of 4.7% for bonus withholding in 2025. This rate applies to supplemental wages like bonuses when paid separately from regular wages. Employers can choose to withhold at this flat rate. The rate decreased from 4.8% in 2024 to 4.7% starting January 1, 2025.

How much tax is withheld from my bonus in Missouri?

Your bonus gets taxed at both federal and Missouri state levels. Federal tax withholding is 22% for bonuses under $1 million. Missouri withholds 4.7% from your bonus amount. You also pay Social Security tax at 6.2% and Medicare tax at 1.45%.

Why does my bonus get taxed so much?

Bonuses are considered supplemental income by tax authorities. The IRS treats bonuses differently from regular wages. Employers often use flat withholding rates for bonuses. This can make the tax withholding seem higher than your regular paycheck.

Can I use a different method to calculate Missouri bonus taxes?

Missouri allows two methods for bonus tax calculation. The flat rate method withholds 4.7% of the bonus amount. The aggregate method combines your bonus with regular wages. Your employer chooses which method to use for payroll.

Do I get money back if too much tax was withheld from my bonus?

Yes, excess withholding creates a tax refund when you file. Bonus withholding is just an estimate of taxes owed. Your actual tax liability depends on your total annual income. Any overpayment gets refunded after filing your tax return.

How do Missouri bonus tax calculators work?

Bonus calculators estimate your take-home pay after taxes. You enter your bonus amount and tax information. The tool calculates federal, state, and payroll taxes. Results show your net bonus payment after all deductions.

What bonuses are subject to Missouri state tax?

All cash bonuses from employers are taxable in Missouri. Performance bonuses, holiday bonuses, and commissions count as taxable income. Stock options and non-cash awards may also be taxable. Gift cards and high-value gifts are generally taxable.

When do I pay taxes on my Missouri bonus?

You pay taxes in the year your bonus is declared. This applies even if you receive payment later. Your employer withholds taxes when the bonus is paid. Final tax liability is settled when you file your annual return.

Are Missouri bonuses taxed differently than regular wages?

Bonuses use different withholding methods than regular pay. Regular wages follow standard withholding tables. Bonuses can use flat percentage rates for withholding. However, both are taxed at the same rates on your tax return.

How can I minimize taxes on my Missouri bonus?

You cannot avoid paying taxes on bonus income. However, you can adjust your W-4 withholding allowances. Consider increasing retirement contributions before receiving the bonus. Timing bonus payments across tax years may help with planning.

What is the difference between percentage and aggregate bonus tax methods?

The percentage method uses a flat 4.7% Missouri withholding rate. The aggregate method combines bonus with regular wages. Aggregate method applies regular withholding tables to the total. Your employer decides which method to use.

Do St. Louis and Kansas City residents pay extra tax on bonuses?

Yes, both cities charge an additional 1% earnings tax. This applies to residents and anyone working in these cities. The local tax applies to all income including bonuses. This creates a higher total tax burden on bonus payments.