How bonuses are taxed explained for consultants
How bonuses are taxed explained for consultants, with a worked example, a checklist and the mistakes to avoid.
Why this matters for consultants
Consultants usually bill large amounts irregularly, so setting aside the right share for tax is essential.
Worked example
Here is the calculation with sample figures. Change any number in the Bonus Tax Calculator to run your own.
| Amount | $5,000.00 |
| Federal rate (%) | 22% |
| State rate (%) | 5% |
| Federal tax | $1,100.00 |
|---|---|
| State tax | $250.00 |
| Social Security and Medicare | $382.50 |
| Net amount | $3,267.50 |
How bonuses are taxed: how it works
Bonuses are taxed as income, but withholding often uses a flat supplemental rate, which can make the bonus look more heavily taxed than salary.
At filing time the bonus is simply part of total income.
A second example with larger figures
Scaling the inputs up shows how the result moves. Percentages stay the same, so the tax grows in proportion to the amount it is applied to.
| Amount | $15,000.00 |
| Federal rate (%) | 22% |
| State rate (%) | 5% |
| Federal tax | $3,300.00 |
|---|---|
| State tax | $750.00 |
| Social Security and Medicare | $1,147.50 |
| Net amount | $9,802.50 |
Using the calculator step by step
- Open the Bonus Tax Calculator.
- Enter your own figures on each numbered line.
- Set the rate to the one that applies to you. Defaults are examples, not advice.
- Read the result and the formula below it.
Key terms
- Withholding
- Tax deducted at source, by an employer or payer, before the money reaches you.
- Reduced rate
- A lower rate that applies to specific categories, often essentials such as food, medicine or books.
- Deduction
- An amount subtracted from taxable income. It saves tax equal to the deduction times your marginal rate.
- Gross amount
- The amount after tax is added, which is usually what a consumer pays.
- Marginal rate
- The rate applied to the next unit of income. It decides how much of a raise or a deduction you keep.
A quick checklist for consultants
- Find the withholding rate used.
- Add state tax and FICA.
- Reconcile at filing time.
Common mistakes to avoid
- Assuming the withholding rate is the final tax.
- Forgetting state tax on bonuses.
Run your own numbers. The Bonus Tax Calculator updates as you type and shows the formula it uses.
Frequently asked questions
Why should consultants care about this?
Consultants usually bill large amounts irregularly, so setting aside the right share for tax is essential.
What is the quickest way to calculate it?
Use the Bonus Tax Calculator: enter your figures and it shows the result and the formula.
Is this tax advice?
No. It is general information for planning. Rules differ by country and change over time, so confirm with your tax authority or a qualified adviser.
This article is general information for planning, not tax advice. Rates and rules change; confirm with your tax authority or a qualified adviser.