Sign on Bonus Tax: Essential Guide for Informed Decisions

One of the key incentives that companies offer to entice potential, high-demand employees in a competitive job market is a sign on bonus. The incentives can come in different forms, such as a one-time bonus check, stock options or RSUs, or a combination.

Many people must consider the tax implication of receiving a sign-on bonus, how much you owe on it, how it is taxed differently from a regular paycheck, and its overall impact on your tax bill.

Upon receiving a sign-on bonus, it’s imperative to know that this additional income is subject to taxes, just as your regular salary would be. Typically, cash bonuses are taxed at a flat rate of 22%, and you’ll need to report this income on line 1 of Tax Form 1040 when filing your taxes. The bonus may also be subject to state income tax, depending on your location.

By being aware of the tax implications, a new employee can make a more informed decision about your job opportunities and feel confident knowing how your sign-on bonus will ultimately impact your take-home pay.

An individual signing a job contract with details of their sign on bonus using a black stylus

Sign On Bonus Tax Implications

When you receive a sign-on bonus, it’s essential to understand the tax implications. Signing bonuses are considered taxable income by the IRS, and you’ll need to account for them when calculating your federal, state, and local taxes. Your overall bonus tax rate depends on where you live and work.

Your sign-on bonus will be subject to federal income tax withholding. The federal tax withholding rate for bonuses under $1 million is typically a flat 22%. If you receive a $10,000 bonus, you can expect $2,200 to be withheld for federal income taxes. However, be aware that your actual federal income tax rate may differ based on your total income and deductions for the year.

You’ll also need to account for state and local taxes on your signing bonus. The rates for these taxes vary depending on where you live and work. Remember to check your local tax authority to determine the applicable rates and include these amounts when filing your income tax return.

It’s important to note that your sign-on bonus will also be subject to FICA taxes, which include Social Security and Medicare taxes. Currently, the combined rate for these taxes is 7.65% (6.2% for Social Security and 1.45% for Medicare). Employers are responsible for withholding these taxes from your bonus, just as they do with your regular salary.

Sometimes, your employer may not withhold the correct taxes from your signing bonus. If this happens, you could receive a smaller tax refund or even owe taxes at the end of the year. To avoid this, review your pay stubs to ensure the proper amount of taxes has been withheld.

Supplemental Wages and Taxes

As you navigate the world of taxes, it’s crucial to understand how different types of income, such as supplemental wages, are taxed. Supplemental wages include commissions, overtime pay, sign-on bonuses, year-end bonuses, and other earnings beyond your regular salary. These types of wages are subject to specific tax rules.

When you receive income beyond your regular paycheck, like a sign-on bonus, the IRS treats this differently than regular wages. Employers typically use one of two methods to withhold taxes on supplemental wages: the percentage method or the aggregate method (more on tax withholding methods later).

It’s important to note that when you file your taxes, the supplemental wages withholding rate is not the same as your actual tax rate, which depends on your total income and deductions.

After filing your taxes, you may receive a refund for any overpaid taxes or need to pay additional taxes if your actual tax rate is higher than the withheld amount.

Need professional assistance with your personal taxes?

Our team of experienced CPAs is here to help! Request a quote today and let us handle your tax needs with expertise and personalized solutions.

How Bonuses Are Taxed

When you receive a bonus from your employer, it is considered part of your taxable income and will impact your annual tax bill. The primary methods for taxing bonuses are the percentage and the aggregate methods. Understanding both methods will help you anticipate and manage the impact of bonus taxation.

Percentage Method: The percentage method applies a flat rate to your bonus income. Usually, a 22% federal tax rate is applied to the bonus amount, regardless of your regular income tax bracket. Employers commonly use this method, as it is straightforward to calculate.

For example, if you receive a $5,000 bonus and your employer uses the percentage method, $1,100 (22% of $5,000) will be withheld for federal taxes, leaving you with a net amount of $3,900.

Aggregate Method: The aggregate method combines your regular income with your bonus amount to calculate the tax liability. This method could result in a higher tax liability, as the combined income might push you into a higher tax bracket. To calculate the tax using the aggregate method, your employer adds the bonus to your regular wages and determines the tax as if it were all regular income. Then they subtract the tax that has already been withheld from your regular income to determine the additional tax owed for the bonus amount.

Remember that the percentage and aggregate methods only account for federal taxes. State taxes will also likely apply, depending on where you live. Your bonus income will be reported on your annual W-2 form, along with your regular gross income. The sum of both your regular wages and bonus amounts will be considered your total gross income. After all applicable tax deductions, your net income will be determined.

One more aspect to be aware of is the claim of right provision. If you receive a bonus you’re not entitled to and later need to repay it, the IRS allows you to recover the tax paid on that bonus. To do so, you can either claim a credit on your tax return or file an amended return for the previous year.

The Impact on Income

When receiving a sign-on bonus, you might wonder how it affects your income and taxes. It’s essential to understand the impact of this bonus on your overall financial situation, federal income taxes, state-level taxes, and whether you receive a tax refund.

Firstly, a sign-on bonus is considered supplemental income by the IRS and is taxed at a flat rate of 22% for federal taxes, generally higher than your regular income tax rate. 

In terms of your salary, this bonus is a one-time payment and does not directly impact your pay or benefits. However, your bonus might indirectly affect your salary in future years if it raises your overall income, leading to a higher tax bracket and, therefore, a higher tax rate for your regular wages.

Another thing to consider is how the bonus impacts your tax deductions and paycheck. Since your bonus is separate from your usual salary, it is not factored into benefits like retirement contributions, health insurance premiums, or other paycheck deductions. You should plan accordingly and review your W-4 form to ensure accurate withholdings [^5^].

Lastly, it’s essential to recognize that earnings from your sign-on bonus are separate from your salary and should not be included in your long-term financial planning. Although it is a significant income source in the short term, avoid over-reliance on your bonus to ensure financial stability throughout your employment journey.

The Tax Impact of Repaying a Signing Bonus

When it comes to repaying a signing bonus, there are some tax implications that you need to be aware of. Depending on the specific circumstances and the bonus amount, there are different options to reclaim the taxes initially withheld from your signing bonus.

If the repaid bonus amount is more than $3,000, two options are generally available. The first option is to request your former employer to issue a corrected Form W-2C for the year the bonus was received, which removes the bonus amount from your taxable income 1. This will require amending your tax return for that year, which may result in a refund of the taxes paid on the bonus.

However, this option might not be feasible for everyone, as it relies on the cooperation of your former employer in issuing the corrected Form W-2C.

Alternatively, you can claim a tax credit or deduction for the repaid amount under Internal Revenue Code (IRC) Section 1341, also known as the “claim of right” provision 2. This option is applicable when you have repaid a signing bonus in a subsequent year after the bonus was initially received and taxed. You would file your taxes for the year in which you made the repayment, claiming a credit or deduction for the repaid amount.

The tax implications could be more straightforward if a signing bonus repayment was made in the same year the bonus was received. Since the repayment occurs in the same tax year, the signing bonus is essentially offset, and your taxable income should reflect the adjusted amount, negating the need for a “claim of right” repayment 3.

When handling the tax implications of repaying a signing bonus, it’s important to consider your specific circumstances and seek professional advice if necessary. Being informed, aware, and proactive can help minimize the tax impact of repaying a signing bonus.


  1. Intuit
  2. CerebralTax
  3. Intuit

Need professional assistance with your personal taxes?

Our team of experienced CPAs is here to help! Request a quote today and let us handle your tax needs with expertise and personalized solutions.

Frequently Asked Questions

Are sign-on bonuses taxed differently than regular income?

Yes, sign-on bonuses are typically taxed at a higher rate than regular income. This is because the IRS treats bonuses as supplemental wages, which are subject to a higher withholding rate than regular income. However, when you file your taxes, your bonus will be combined with your other income and taxed at your regular rate based on your total income and deductions.

How much of a signing bonus is taxed?

The percentage of your signing bonus that is taxed depends on how your employer chooses to withhold taxes. Employers have two options: the percentage method, where they withhold a flat 22% of the bonus, or the aggregate method, where they combine the bonus with your regular wages and withhold taxes based on your tax bracket. The actual amount of taxes owed on your signing bonus will be determined when you file your tax return.

Do employers pay taxes on sign-on bonuses?

Employers are responsible for withholding taxes on sign-on bonuses and remitting them to the IRS on your behalf. In addition to withholding income tax, employers also withhold Social Security and Medicare taxes from your signing bonus and may be responsible for paying additional employment taxes.

Can I avoid taxes on my signing bonus?

You cannot wholly avoid taxes on your signing bonus, as signing bonuses are considered taxable income. However, you can minimize your tax liability by contributing some or all of your bonus to tax-deferred accounts, such as an IRA or 401(k), which can reduce your taxable income for the year. It’s always a good idea to consult a tax professional to address your specific financial situation. 

Why is my signing bonus taxed so much?

Your signing bonus may be taxed at a higher rate because signing bonuses are considered supplemental income rather than regular wages. The IRS requires employers to withhold taxes at a higher rate for supplemental income to account for the possibility that the bonus could push you into a higher tax bracket. The actual tax rate applied to your bonus will be determined when you file your tax return, and you may receive a refund if you have overpaid taxes throughout the year.

Do you get bonus taxes back at the end of the year?

Whether you receive a refund for taxes withheld from your bonus depends on your overall tax situation for the year. When you file your tax return, your bonuses are combined with your regular income and taxed at your appropriate rate. If your employer withheld taxes at a higher rate than necessary, you may be eligible for a refund. On the other hand, if your employer did not withhold enough taxes, you may owe additional taxes when you file your return.

Disclaimer: This material has been prepared for informational purposes only, and is not intended to provide, and should not be relied on for, tax, legal or accounting advice. You should consult a tax, legal and accounting advisors before engaging in any transaction or submitting any IRS form.
Picture of Ramin Mohammad

Ramin Mohammad

Ramin Mohammad is a lawyer and CPA with over 15 years of experience including working in audits, teaching, and in big law. Ramin helps clients on both personal and business related tax issues ranging from a multitude of practice areas including tax structuring, planning and cross jurisdictional taxes. His client-base expands throughout the US and overseas offering tax consulting, tax planning and tax preparation.

Scroll to Top