How Is Realized Profit and Loss Calculated on US Stock Transactions in Pluang?

Realized profit and loss is what you actually lock in when you sell, and Pluang calculates it as Net Sale Proceeds minus Cost Basis. Net Sale Proceeds is the value of the sale after every fee has been taken out — the Pluang transaction fee and VAT on it, the JFX and KBI fee and VAT on that, plus the SEC, TAF, and CAT regulatory fees. Cost Basis is your Average Purchase Price multiplied by the number of units you sold. Because the fees come out before the subtraction, your realized figure is always net of the full cost of selling, not the raw gap between your sale price and your purchase price. This is different from Unrealized Profit and Loss, which is a live estimate on a position you still hold and has no fees deducted from it.

• Core formula: Realized P&L = Net Sale Proceeds − Cost Basis.
• Net Sale Proceeds: Sale value minus all fees — transaction fee, VAT on it, JFX & KBI fee, VAT on that, plus SEC, TAF, and CAT.
• Cost Basis: Average Purchase Price × units sold.
• Worked example (Pluang Plus, sell 2 units at $100, average buy $90): Sale value $200; total fees $0.585; net proceeds $199.415; cost basis $180; realized gain $19.415.
• Fees in that example: transaction fee $0.40, VAT $0.044, JFX & KBI $0.10, VAT $0.011, SEC $0.01, TAF $0.01, CAT $0.01.
• Always net: The figure already includes every sell-side cost, not just the headline transaction fee.
• Not the same as unrealised: Unrealized P&L is a live estimate on an open position, with no fees deducted.

Related questions:

Q: What exactly counts as a fee in the Net Sale Proceeds calculation?
Everything charged on the sell side. That covers the Pluang transaction fee, the VAT applied to that fee, the JFX and KBI fee and the VAT on it, and the three US regulatory fees — SEC, TAF, and CAT. All of them are subtracted from the sale value before the cost basis is deducted, which is why your realized figure is lower than a simple price-difference calculation would suggest. Your fee rate depends on whether you are a Pluang Plus member.

Q: How is Cost Basis worked out if I bought the stock in several batches?
Cost Basis uses your Average Purchase Price, which already blends every purchase you made in that stock, multiplied by the number of units you actually sold. So if you bought in three batches at different prices and then sold part of the position, the calculation applies your blended average to the units sold rather than tracking which specific batch was disposed of. That keeps the arithmetic consistent no matter how many times you added.

Q: Can you walk through the worked example?
Take a Pluang Plus member selling 2 units of a stock at $100, bought at an average of $90. Sale value is $200. Fees come to $0.585 in total: $0.40 transaction fee, $0.044 VAT on it, $0.10 for JFX and KBI, $0.011 VAT on that, and $0.01 each for SEC, TAF, and CAT. Net proceeds are $199.415, cost basis is $180, so realized gain is $19.415.

Q: Why is my realized gain lower than the price difference suggested?
Because the price difference ignores the cost of selling. A move from $90 to $100 on two units looks like a $20 gain, but the transaction fee, its VAT, the JFX and KBI fee with its VAT, and the SEC, TAF, and CAT fees all come out of the sale value first. Once those are deducted the realized figure lands slightly below the headline difference — $19.415 rather than $20 in the worked example above.