AfterTaxLabCapital gains basics next to a wage calculator
Capital gains represent the profit earned when selling assets like stocks or property, which functions differently than standard employment earnings. While wages are taxed at ordinary income rates as they appear on your paycheck, capital gains are subject to distinct tax treatments based on holding periods and total income levels. Understanding this distinction is essential for accurately projecting your annual tax liabilities and planning your personal finances effectively.
Workers typically encounter wage taxation through automatic payroll withholdings that adjust based on their earnings bracket. When you receive a salary, employers deduct federal taxes before the funds reach your account, reflecting the current federal marginal rate. Because the engine processes these payroll figures, it identifies the specific tax impact on your take-home pay, allowing you to visualize how different salary levels change your immediate financial reality through standard withholdings.
Marginal wage rates the engine actually applies
These are wage-income rates. AfterTaxLab has no capital-gains code path, so investment income is outside every figure on this site.
| Gross salary | Marginal wage rate | Federal wage tax | Take-home |
|---|---|---|---|
| $50,000 | 12% | $3,820 | $42,355 |
| $100,000 | 22% | $13,170 | $79,180 |
| $250,000 | 32% | $51,304 | $183,182 |
What the engine prices
The AfterTaxLab engine focuses exclusively on wage income, applying standard payroll tax rules to determine net pay. It calculates the marginal federal rate of 22% at a $100,000 salary to show how progressive tax brackets impact your liquid income. By processing these specific wage inputs, the tool provides a clear view of how much cash remains from your labor after federal obligations. It does not incorporate secondary income streams, ensuring the calculation remains focused on your primary employment compensation and standard payroll deductions.
Where investment income sits
Investment income, including capital gains, operates outside the traditional payroll withholding system that funds your net salary. Because these earnings originate from market activity rather than employer-provided wages, the engine contains no capital-gains rules at all. This structural separation ensures that your employment pay projections remain isolated from fluctuating market variables. Consequently, any figures generated by the tool reflect only the taxation of your labor and do not attempt to forecast the net impact of brokerage accounts or real estate transactions.
Keeping the two apart
Mixing the two income types requires adding investment income to these wage figures by hand, outside the calculator. The engine is designed to provide a baseline for your take-home pay, such as the $79,180 figure for a $100,000 salary in Texas. Since the calculator does not track your personal portfolio, you must perform separate calculations for your assets and combine them with these wage outputs. This manual process prevents the mixing of distinct tax categories, allowing you to maintain a precise understanding of your total annual financial position.
Capital gains basics next to a wage calculator: common questions
Why does the calculator not include my stock sales?
The tool is specifically built to analyze payroll income, which is taxed differently than capital gains. Since the engine contains no capital-gains rules at all, it cannot incorporate market profits. This ensures the payroll data remains accurate for your regular salary, such as the $100,000 salary level.
How do I determine the tax on my total annual income?
You must first use the calculator to find your net wage income, like the $79,180 take-home pay for a Texas resident. Once you have that figure, you should calculate your investment taxes separately and add the two totals together manually, as the engine does not perform these combined calculations.
Will my federal tax rate change if I have capital gains?
Capital gains are generally taxed according to their own schedule, separate from the marginal federal rate of 22% applied to a $100,000 salary. While your total income level may influence your overall tax bracket, the calculator itself only processes wage income to determine your net pay.
Is the engine accurate for high-earning professionals?
Yes, the engine accurately applies wage-based tax rules for various income levels, such as the 32% marginal federal rate at a $250,000 salary. However, it only reflects the tax consequences of your base wages, so you must account for any supplemental investment earnings independently outside of this specific payroll tool.
Figures calculated with the AfterTaxLab 2026 engine: federal brackets and standard deduction ($16,100 single), Social Security wage base $184,500, published 2026 state rates. Estimates for planning only — not tax advice. Last verified 21 Sep 2026 · methodology.