Net profit after tax explained for online sellers
Net profit after tax explained for online sellers, with a worked example, a checklist and the mistakes to avoid.
Why this matters for online sellers
Selling online means customers in many places, each with its own tax rules, so accurate calculations matter on every order.
Worked example
Here is the calculation with sample figures. Change any number in the Net Profit After Tax Calculator to run your own.
| Annual income | 500,000.00 |
| Costs and fees | 380,000.00 |
| Tax rate (%) | 21% |
| Profit | 120,000.00 |
|---|---|
| Tax | 25,200.00 |
| Net income | 94,800.00 |
Net profit after tax: how it works
Net profit after tax is revenue minus costs minus corporate tax.
It is the figure that is available for reinvestment or distribution.
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.
| Annual income | 1,500,000.00 |
| Costs and fees | 1,140,000.00 |
| Tax rate (%) | 21% |
| Profit | 360,000.00 |
|---|---|
| Tax | 75,600.00 |
| Net income | 284,400.00 |
Using the calculator step by step
- Open the Net Profit After 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
- 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.
- Taxable income
- Income left after allowances and deductions, on which the tax rates are applied.
- Zero rate
- A rate of 0% on a taxable supply. Unlike an exemption, the seller can usually still reclaim tax on costs.
A quick checklist for online sellers
- Total revenue.
- Subtract deductible costs.
- Apply the corporate tax rate.
Common mistakes to avoid
- Including non-deductible expenses as costs.
- Forgetting tax instalments.
Run your own numbers. The Net Profit After Tax Calculator updates as you type and shows the formula it uses.
Frequently asked questions
Why should online sellers care about this?
Selling online means customers in many places, each with its own tax rules, so accurate calculations matter on every order.
What is the quickest way to calculate it?
Use the Net Profit After 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.