Wealth Tax Impact Calculator
Enter your holdings and adjust the policy sliders to see estimated annual wealth tax liability. Nothing leaves your browser.
How the model works
What you enter
You list your assets across six categories. The calculator sums them to find your total net worth for tax purposes. You can mark up to two categories as exempt, which removes them from the taxable base. This lets you model assets held in trusts, retirement accounts with special treatment, or holdings in jurisdictions that may be carved out.
How the tax is figured
The calculator subtracts your exemption threshold from your taxable assets. If the result is positive, it multiplies that amount by the tax rate you set with the slider. If your taxable assets are below the threshold, no tax is due. The effective rate shown is the tax divided by total assets, which helps you see the real burden.
What the sliders control
The tax rate slider sets the annual percentage applied to assets above the threshold. The exemption slider sets the dollar amount below which no wealth tax applies. Together they define the policy you are testing. Move them to match a specific proposal or to explore what-if ranges.
Common mistakes when modeling wealth taxes
- Counting home equity twice. If you include your primary residence in real estate equity, do not also list it under other assets. Pick one category.
- Forgetting about debt. This calculator uses gross asset values. Most wealth tax proposals allow some debt deduction. If you carry a mortgage or business loans, you may want to subtract those from the relevant asset category before entering the number.
- Assuming retirement accounts are always exempt. Some proposals include retirement accounts above a certain threshold. Check the specifics of the proposal you are modeling before marking retirement as exempt.
- Using the wrong filing status. If a proposal doubles the exemption for married couples filing jointly, set your status accordingly. The calculator does not automatically adjust the exemption based on status; you control that with the slider.
- Treating the result as a final tax bill. This is a single-rate model. Real legislation often has multiple brackets, phase-in periods, and interaction with other taxes. Use the output as a conversation starter, not a filing instruction.
- Ignoring liquidity. A wealth tax is due in cash each year. If most of your assets are illiquid (real estate, private business), you need a plan for generating cash to pay the tax without selling assets at a bad time.
Walkthrough: Business owner evaluating two proposals
Imagine you own a manufacturing company worth $8 million, have $2 million in securities, $500,000 in cash, and a house with $1 million in equity. Your total assets are $11.5 million. You file jointly and live in New York.
Start with the Moderate preset (1% over $10M). Your taxable assets are $11.5 million, minus the $10 million exemption, leaving $1.5 million subject to tax. The estimated annual wealth tax is $15,000. Your effective rate on total assets is about 0.13%.
Now click Compare to save that scenario. Switch to the Aggressive preset (2% over $5M). The exemption drops to $5 million, so $6.5 million is taxable. At 2%, the estimated tax is $130,000 per year. The comparison panel shows both scenarios: a $115,000 difference.
That gap tells you something useful. If the aggressive proposal gains traction, you might want to look at strategies now: gifting assets to reduce your taxable base, moving some holdings into exempt structures, or relocating to a state without its own wealth tax add-on. The calculator does not give you the answer, but it makes the stakes clear enough to act on.
Questions people ask
Does this cover federal and state wealth taxes?
The calculator applies one rate and one threshold. If a state has its own wealth tax, you can model it separately by adjusting the sliders. The tool does not layer federal and state taxes automatically. Run each one and note the combined impact.
What if my assets are spread across multiple countries?
Enter the total value of each category regardless of location. If some assets are held in jurisdictions that do not recognize U.S. wealth tax claims, mark those categories as exempt to see how the numbers change. International tax treaties add complexity this calculator cannot capture.
Can I save my scenarios?
Yes. Click Compare to store the current inputs and results in your browser. They stay there until you clear them. You can also click Copy Link to get a URL that encodes your inputs, which you can send to your advisor or bookmark.
How often should I revisit this?
Whenever a new proposal is announced or your asset mix changes significantly. Tax policy evolves quickly during election cycles. Checking quarterly and saving a comparison each time gives you a running record of how the landscape is shifting for your situation.
Is this a replacement for a financial advisor?
No. This is a planning sandbox. It gives you rough numbers to bring to a professional. A qualified CPA or wealth manager can factor in trust structures, gifting strategies, state-specific rules, and the interaction with income and estate taxes that this simple model leaves out.