Deemed Disposal Calculator
Upload your broker CSV to find purchases hitting their 8-year deemed disposal date and estimate 38Â % exit tax on any gains.
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How to use
- Export your transaction history CSV from your broker (Trading 212, DEGIRO, etc.)
- Upload it below
- Select the tax year you want to check
- Click Calculate Tax
How this calculator works
This tool estimates Irish deemed disposal tax by processing your transaction history in a few clear steps.
- Reads your CSV trades and standardizes buys/sells, dates, quantities, currencies, and ISINs.
- Keeps ETF holdings only (based on ISIN classification) and excludes non-ETF rows.
- Applies the 8-year deemed disposal rule to find lots that become taxable in your selected tax year.
- Fetches historical prices for the deemed disposal date from Yahoo Finance.
- Converts all values to EUR using historical FX rates (for example, USD value converted to EUR on the relevant date).
- Calculates estimated gain and 38% exit tax, then shows excluded rows and audit details for transparency.
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Disclaimer
This calculator provides estimates only and is not tax advice. Results depend on historical price data from Yahoo Finance and may not match Revenue-accepted values. Always consult a qualified tax advisor for your actual tax filing. See our FAQ for more details.
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