US Stock Tax Calculator

Estimate your exact federal and state market taxes. Factor in preferential long-term capital gains rates, filing statuses, and standard deductions automatically.

Determines your standard deduction and IRS tax brackets.
Single
Married
Your standard employment earnings. Investment profits are stacked on top of this base to find your marginal brackets.
$
Profits from assets held for 1 year or less. Taxed as ordinary income.
$
Profits from assets held for more than 1 year. Taxed at reduced rates (0%, 15%, or 20%).
$
Your losing stock trades this year. Used to offset gains, with up to a $3,000 net deduction against your W-2 salary.
$
Applies state-level progressive income rules or flat-rate exceptions.
California
Total Estimated Tax Owed
$12,182.09
Net Profit (What you keep)
$817.91

Tax Breakdown

Net Capital Gains $13,000
Federal Tax (Ordinary + Long-Term) $8,774
State Tax (California) $3,408

US Stock & Capital Gains FAQ

Understanding preferential tax stacking, holding durations, and IRS wash-sale guidelines.

Capital Gains
Trader Tax Status
IRS Rules
What is the difference between Short-Term and Long-Term gains?

The IRS heavily rewards holding stocks. If you sell a stock after holding it for less than a year, it is a Short-Term gain and taxed at your normal income bracket. If you hold it for over a year, it is a Long-Term gain and taxed at a preferential flat rate (usually 15%).

How much of my losses can I write off?

If your stock market losses exceed your gains for the year, the IRS only allows you to deduct a maximum of $3,000 against your normal W-2 income. Any remaining losses must be 'carried forward' to future tax years.