Free CGT calculators
Tools to help you understand your Capital Gains Tax position in Ireland. No signup required.
CGT Calculator
Calculate the Capital Gains Tax you owe on a sale. Enter your purchase price, sale price, and costs to see your gain and the tax due.
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Share Cost Calculator
Enter your buy and sell trades for one asset. The calculator matches shares to sales and works out your cost basis and gain or loss.
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Late Payment Penalty Calculator
Missed a CGT payment deadline? Estimate the interest and penalties Revenue may charge on late payments.
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Need more than a quick calculation?
Submyt handles FIFO, 28-day matching, FX conversion, and loss tracking automatically across all your trades.