Short term, long term, and the 0% bracket most people miss.
The same dollar of gain can be taxed at 37% or at nothing, depending on holding period and income. The engine handles the real rules.
Get startedHolding period, priced
Short-term gains stack on ordinary income; long-term gains get their own brackets — including the 0% one. The estimator shows the difference on your numbers.
Qualified dividends too
Dividends ride the same preferential brackets when they qualify, and the engine computes the qualified-dividend worksheet properly.
Timing, quantified
What selling in December versus January actually changes, worked out rather than guessed at.
Estimates for planning. Wash-sale tracking and lot-level accounting stay at your brokerage.
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