Selling within a year: what a short-term gain costs compared with waiting
Concepts
A single filer with $80,000 of other income pays $15,000 of federal tax on a $100,000 long-term gain and $23,164 if the same gain is short-term: $8,164 more.
- $15,000long-term
- $23,164short-term
- $8,164difference
Holding Period Rules
The distinction between short and long-term gains rests on how long you hold an asset. The holding period begins the day after purchase and ends on the day of sale. If this span is one year or less, the gain is short-term. If it exceeds one year, it qualifies for long-term treatment. This timing determines which federal tax bracket applies. The key figures above illustrate the cost difference for a specific income level. Use the capital gains tax calculator to see how your specific situation compares. The table below breaks down the federal tax owed for each holding period under current rules. Short-term gains are added to your ordinary income. Long-term gains are taxed separately at preferential rates. This structural difference drives the variance shown in the data.
| Held | Federal tax on the gain ($) |
|---|---|
| More than a year | 15,000 |
| A year or less | 23,164 |
Federal Tax Differences
Short-term gains face ordinary income tax rates. These rates rise with total income. Long-term gains benefit from lower tiered rates. The table above shows that waiting past the one-year mark reduces the federal liability significantly. For the example provided, the short-term tax is higher than the long-term tax. This gap reflects the progressive nature of ordinary income brackets versus the capped rates for long-term gains. Your other income affects both calculations, but the impact is more pronounced for short-term gains. The difference in tax owed is substantial for higher earners. Check the methodology page to understand how these estimates are derived. The calculator uses current federal brackets for this tax year. It does not predict future law changes. The figures are estimates based on the stated filing status and income.
State Tax Treatment
Most states do not distinguish between short and long-term capital gains. They typically tax both as ordinary income. This means the state tax burden remains consistent regardless of holding period. The federal difference is the primary driver of the total tax change. Some states offer specific deductions or credits, but these are rare exceptions. The table above focuses on federal liability to isolate this effect. State rules vary by jurisdiction. Check your local regulations for specific treatment. The calculator accounts for common state tax structures. It provides a baseline estimate for comparison. The federal preferential rate is the main lever. State taxes add a consistent layer on top. This simplifies the comparison for most readers. The key figures highlight the federal impact clearly.
Questions
When does the holding period begin?
The clock starts the day after you buy the asset. It includes the day you sell it. This determines if the gain is short or long-term.
Why is short-term tax higher?
Short-term gains are taxed as ordinary income. Long-term gains use preferential rates. The table above shows the difference for this example.
Do states tax gains differently?
Most states apply their standard income tax rates to both types of gains. They rarely distinguish between holding periods for calculation purposes.
How are these estimates calculated?
Figures reflect current federal brackets for the stated income level. See the methodology page for details on how the calculator derives these estimates.
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.