Capital gains tax planning scenarios

Capital gains planning is most effective when you evaluate a few specific levers: timing, income management, relocation, and loss harvesting. The case studies below show how to quantify each lever using the scenario planner and calculators.

Scenario 1: Wait for long-term qualification

Alex bought a stock position on June 1, 2025 and is considering a sale in May 2026. Waiting until June 2, 2026 changes the holding period from short-term to long-term. The actual difference depends on taxable income, sale price, and filing status, so compare both dates and then verify the result.

Scenario 2: Loss harvesting to fund a relocation

Priya is considering a move from California to Texas and a $15,000 stock loss. The state selector can illustrate the difference between selected headline rates, while the loss field shows a preliminary federal offset. It cannot determine domicile or source income. For example, gain from California real property can remain California-source after a move, so the zero-rate Texas scenario is not proof that California tax disappears.

Scenario 3: Know when this tool does not fit

Incentive stock options, employee stock purchase plans, installment sales, and like-kind exchanges require inputs and rules this planner does not have. It does not calculate option exercise income, alternative minimum tax, ISO holding-period tests, or multi-year tax. Use the planner only for a conventional capital-asset sale inside 2026 and evaluate those specialized transactions separately.

Applying the playbook

• Benchmark your current plan in Scenario A with actual dates, sale prices, and state.
• Copy the scenario and tweak one lever at a time—timing, income, or loss harvesting—to isolate the savings.
• Record supporting documents such as improvement receipts and brokerage statements alongside each scenario.

Record the comparison and review it with a qualified tax or financial professional before changing estimated payments or withholding.