Alaska capital gains tax for a married couple: a worked example
State tax
A married couple in Alaska with $120,000 of other income and a $250,000 long-term gain pays $35,835 of federal income tax, $4,560 of the 3.8% tax and $0 of Alaska tax, and keeps $209,605.
- $0Alaska tax
- $35,835federal income tax
- $209,605kept
Federal Tax Structure
The key figures above show the total federal liability for this couple. Their other income determines which bracket applies to their long-term gain. This stacking effect means the gain is taxed after ordinary income fills the lower brackets. The result is a specific federal income tax amount. This figure reflects the progressive nature of federal rates. It does not include the additional surtax. That surtax applies separately to investment income. The table below breaks down these components clearly. Readers see how ordinary income influences the rate on the gain. The interaction creates a blended effective rate. This calculation assumes standard joint filing status. It relies on current federal rules for this tax year. Use the capital gains tax calculator to test your own figures.
| Tax | Amount ($) |
|---|---|
| Federal income tax | 35,835 |
| 3.8% investment income tax | 4,560 |
| Alaska tax | 0 |
| Kept | 209,605 |
Investment Income Surcharge
A separate surtax applies to investment income for high earners. The key figures show this additional cost. It applies to the portion of income above specific thresholds. For joint filers, this threshold is relatively high. The surcharge is distinct from ordinary income tax. It does not replace the base federal tax. Both amounts add together for total federal liability. The table above lists this surcharge separately. It helps readers distinguish between base tax and surcharges. This distinction matters for accurate planning. The surcharge applies regardless of how the gain was realized. It targets passive investment returns specifically. The amount depends on total modified adjusted gross income.
Alaska State Tax Treatment
Alaska imposes no income tax on individuals. This fact simplifies state-level calculations significantly. The key figures confirm zero state tax liability. This applies to both long-term and short-term gains. The table above shows this zero amount clearly. Other states may levy taxes on capital gains. Alaska does not. This creates a predictable state tax environment. Residents pay only federal taxes on these gains. The lack of state tax affects net retention. The couple keeps more of their gain. This comparison holds for short-term gains too. The state tax remains zero in both cases. No deductions or credits alter this baseline. See the Alaska capital gains tax page for details.
Net Retention Analysis
The final figure shows what the couple keeps. This is the gain minus all taxes. The key figures display this net amount. It represents the actual cash retained. The calculation subtracts federal income tax first. Then it subtracts the investment surcharge. State tax is already zero. The result is the net retention. This number helps readers compare outcomes. It shows the impact of federal layers. The table above summarizes these steps. Readers can see the cumulative effect. The net amount is always less than the gross gain. This difference reflects the total tax burden. The example illustrates typical outcomes for joint filers. It provides a concrete benchmark for estimation.
Questions
Why is Alaska tax zero?
Alaska does not levy an individual income tax. This applies to capital gains as well. The state tax component remains zero for all filers.
How does other income affect the tax?
Other income fills lower federal tax brackets first. This pushes the capital gain into higher brackets. The effective rate on the gain increases accordingly.
Does the surcharge apply to everyone?
The surcharge applies only when income exceeds specific thresholds. Joint filers have higher thresholds than singles. It targets investment income specifically.
Every figure on this page is computed by code from the 2026 federal brackets and capital gains thresholds (IRS Rev. Proc. 2025-32) and the 2026 state brackets. See the methodology.