Free Embeddable Financial Calculators
Add any of these free calculators to your blog or website with a single line of code. No API keys, no backend — just copy and paste the iframe. All calculators are free to embed with a “Powered by StockLeo” link.
Tax Calculators
Capital Gains Tax Calculator
Estimate the federal tax owed on stocks sold at a profit, short- or long-term.
<iframe src="https://stockleo.com/embed/capital-gains-tax-calculator" width="100%" height="720" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Capital Gains Tax Calculator — StockLeo"></iframe>Long-Term Capital Gains Tax Calculator
Calculate the 0%, 15%, or 20% long-term rate on investments held over a year.
<iframe src="https://stockleo.com/embed/long-term-capital-gains-tax-calculator" width="100%" height="720" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Long-Term Capital Gains Tax Calculator — StockLeo"></iframe>Short-Term Capital Gains Tax Calculator
See the ordinary-income tax owed on investments held one year or less.
<iframe src="https://stockleo.com/embed/short-term-capital-gains-tax-calculator" width="100%" height="720" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Short-Term Capital Gains Tax Calculator — StockLeo"></iframe>Capital Gains Timing Calculator
Compare the tax of selling now vs. waiting to cross the long-term threshold.
<iframe src="https://stockleo.com/embed/capital-gains-timing-calculator" width="100%" height="720" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Capital Gains Timing Calculator — StockLeo"></iframe>Roth Conversion Calculator
Model the tax cost of converting Traditional IRA dollars to a Roth.
<iframe src="https://stockleo.com/embed/roth-conversion-calculator" width="100%" height="720" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Roth Conversion Calculator — StockLeo"></iframe>Wash Sale Checker
Check trades for wash-sale violations that disallow a capital loss.
<iframe src="https://stockleo.com/embed/wash-sale-calculator" width="100%" height="720" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Wash Sale Checker — StockLeo"></iframe>Income Calculators
Dividend Calculator
Project dividend income and reinvestment growth over time.
<iframe src="https://stockleo.com/embed/dividend-calculator" width="100%" height="720" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Dividend Calculator — StockLeo"></iframe>Monthly Dividend Income Calculator
Find how much to invest for a target monthly dividend paycheck.
<iframe src="https://stockleo.com/embed/monthly-dividend-income-calculator" width="100%" height="720" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Monthly Dividend Income Calculator — StockLeo"></iframe>ESPP Calculator
Calculate the discount, gain, and tax on an Employee Stock Purchase Plan.
<iframe src="https://stockleo.com/embed/espp-calculator" width="100%" height="720" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="ESPP Calculator — StockLeo"></iframe>Tech Comp Optimizer
Break down a tech salary, bonus, and RSU offer into real take-home value.
<iframe src="https://stockleo.com/embed/tech-comp-optimizer" width="100%" height="720" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Tech Comp Optimizer — StockLeo"></iframe>Portfolio Calculators
Compound Interest Calculator
See how contributions and compounding grow a balance over time.
<iframe src="https://stockleo.com/embed/compound-interest-calculator" width="100%" height="700" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Compound Interest Calculator — StockLeo"></iframe>Investment Goal Calculator
Work out the monthly investment needed to reach a savings goal.
<iframe src="https://stockleo.com/embed/investment-goal-calculator" width="100%" height="700" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Investment Goal Calculator — StockLeo"></iframe>Portfolio Longevity Calculator
Estimate how many years a portfolio lasts at a given withdrawal rate.
<iframe src="https://stockleo.com/embed/portfolio-longevity-calculator" width="100%" height="700" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Portfolio Longevity Calculator — StockLeo"></iframe>DCA Calculator
Model dollar-cost-averaging returns with regular fixed contributions.
<iframe src="https://stockleo.com/embed/dca-calculator" width="100%" height="700" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="DCA Calculator — StockLeo"></iframe>Lump Sum vs. DCA Calculator
Compare investing all at once vs. spreading it out over time.
<iframe src="https://stockleo.com/embed/lump-sum-vs-dca-calculator" width="100%" height="700" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Lump Sum vs. DCA Calculator — StockLeo"></iframe>Portfolio Tools
ETF Overlap Checker
See how much two ETFs overlap in their underlying holdings.
<iframe src="https://stockleo.com/embed/etf-overlap-checker" width="100%" height="700" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="ETF Overlap Checker — StockLeo"></iframe>Stock Split Calculator
Convert share count and cost basis through a forward or reverse split.
<iframe src="https://stockleo.com/embed/stock-split-calculator" width="100%" height="700" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Stock Split Calculator — StockLeo"></iframe>2x / 3x Leveraged ETF Simulator
Simulate how 2x and 3x leveraged ETFs track a daily index move.
<iframe src="https://stockleo.com/embed/2x-3x-etf-simulator" width="100%" height="700" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="2x / 3x Leveraged ETF Simulator — StockLeo"></iframe>Leveraged ETF Daily Reset Calculator
See how daily rebalancing changes leveraged ETF returns.
<iframe src="https://stockleo.com/embed/leveraged-etf-daily-reset-calculator" width="100%" height="700" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Leveraged ETF Daily Reset Calculator — StockLeo"></iframe>Leveraged ETF Decay Calculator
Estimate volatility-decay drag on a leveraged ETF over time.
<iframe src="https://stockleo.com/embed/leveraged-etf-decay-calculator" width="100%" height="700" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Leveraged ETF Decay Calculator — StockLeo"></iframe>Leveraged ETF Rebalancing Calculator
Model the rebalancing mechanics behind leveraged ETF returns.
<iframe src="https://stockleo.com/embed/leveraged-etf-rebalancing-calculator" width="100%" height="700" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Leveraged ETF Rebalancing Calculator — StockLeo"></iframe>Leveraged ETF Recovery Calculator
Calculate the gain needed for a leveraged ETF to recover a loss.
<iframe src="https://stockleo.com/embed/leveraged-etf-recovery-calculator" width="100%" height="700" style="border:1px solid #e5e7eb;border-radius:8px;max-width:800px" loading="lazy" title="Leveraged ETF Recovery Calculator — StockLeo"></iframe>Free to use. All calculators are free to embed on any website with attribution. The “Powered by StockLeo” link in each widget is the only requirement. Want a custom height or a calculator not listed here? Contact us.