How to Calculate Forex P&L on a Funded Account

TL;DR: Forex profit and loss on a buy is (close minus open) x units, and on a sell it is (open minus close) x units, in the quote currency, then converted to account currency. One lot is 100,000 units, so 20 pips on 0.5 lot of EUR/USD at 1.0850 is 0.0020 x 50,000 = +$100 ($5 per pip). USD/JPY pays in yen and is divided by the closing rate (45 pips on 1.0 lot at 150.65 = 45,000 JPY = about $298.70); a cross such as EUR/GBP pays in GBP and needs a GBP/USD conversion. Unrealized P&L is marked to market at the bid (longs) or ask (shorts) every tick and counts against most daily loss limits, so a floating loss can breach a rule before you close. Spread, commission, and swap reduce the gross number, and expectancy is (win rate x average win) minus (loss rate x average loss) built from net per-trade figures. A 0.01 lot is 1,000 units, or $0.10 per pip on EUR/USD.

You are long EUR/USD on an evaluation account, price is moving against you, and the platform shows a floating loss. The number that matters is not the pips. It is how many dollars of your daily loss allowance are already gone, and whether the next 15 pips against you would end the account.

Every rule that can close a funded account is written in account currency: the daily loss limit (floating losses usually count), the maximum drawdown, and the consistency rule that caps how much of total profit one day may contribute. So the P&L math has to be done in account currency, before the trade, at the size you actually intend to take.

The Forex P&L Formulas for Buy and Sell Trades

• Buy (long): P&L in quote currency = (Close price minus Open price) x Units
• Sell (short): P&L in quote currency = (Open price minus Close price) x Units
• Account currency: Convert the quote-currency result at the closing rate between quote currency and account currency.

Units come from lot size: 1.00 lot = 100,000 units of the base currency, 0.10 lot = 10,000, 0.01 lot = 1,000.

The pip-value shortcut gives the same answer: pip value (one pip x units, in account currency) times pips gained or lost.

The inputs any calculator asks for are the ones you need by hand: account currency, pair (base first, quote second), trade size, direction, open and close price, and a conversion rate when the quote is not your account currency. The most common input error is treating a JPY pip (0.01) like a USD pip (0.0001).

Worked Forex P&L Example on a USD-Quote Pair

Example buy. A trader buys 0.5 lot of EUR/USD at 1.0850 and closes at 1.0870.

• Units: 50,000 EUR
• Price change: 1.0870 minus 1.0850 = 0.0020 (20 pips)
• P&L: 0.0020 x 50,000 = +$100

Example sell. A trader sells 0.3 lot of GBP/USD at 1.2640 and is closed out at 1.2665.

• Units: 30,000 GBP
• Price change: 1.2640 minus 1.2665 = negative 0.0025 (25 pips against)
• P&L: negative $75

Now the funded layer. Imagine a 100,000 simulated account with a 3% daily loss limit, $3,000. That $75 loss is 2.5 percent of it. Sized at 3.0 lots, the same 25 pips costs $750, and two more of those leave room for exactly one more stop before the limit. Same pips, different consequence.

Worked Forex P&L Example on USD/JPY

Example buy. A trader buys 1.0 lot of USD/JPY at 150.20 and closes at 150.65.

• Units: 100,000 USD
• Price change: 0.45 (45 pips, since one JPY pip is 0.01)
• P&L in JPY: 0.45 x 100,000 = 45,000 JPY
• Convert at the closing rate: 45,000 / 150.65 = about +$298.70

Pip value on USD/JPY floats: about $6.64 per pip per lot at 150.65, about $7.14 at 140.00. Assuming "$10 per pip per lot" everywhere overstates risk here and understates it on the next pair.

Worked Forex P&L Example on a Cross Pair

Example sell. A trader sells 0.5 lot of EUR/GBP at 0.8560 and is closed at 0.8590. GBP/USD is trading at 1.2650.

• Units: 50,000 EUR
• Price change: negative 0.0030 (30 pips against)
• P&L in GBP: negative 0.0030 x 50,000 = negative 150 GBP
• Convert to USD: negative 150 x 1.2650 = negative $189.75

Pip value per lot on EUR/GBP is 10 GBP, about $12.65 at that rate. The "$10 a pip" trader is quietly oversized on every cross.

Unrealized Versus Realized Forex P&L

Realized P&L is booked when a position closes and changes your balance. Unrealized (floating) P&L is the mark-to-market value of open positions and changes your equity every tick. Longs are marked at the bid, shorts at the ask, so a new trade already shows a loss equal to the spread.

Example. The 0.5 lot EUR/USD long is still open and the bid is 1.0835. Unrealized P&L = (1.0835 minus 1.0850) x 50,000 = negative $75.

Here is what catches evaluation traders. Most daily loss limits are measured on equity, not balance, so if the limit is $3,000 and your floating loss reaches $3,000, the breach happens whether or not you click close. "It is only floating, it will come back" ends more accounts than any single bad entry.

So compare your stop (pips x pip value x lots) with the allowance remaining today, not the allowance you started with. And if you hold several positions, sum their floating P&L. Correlated longs on EUR/USD and GBP/USD are one risk, not two.

How Spread, Commission, and Swap Change Net Forex P&L

Gross P&L is the formula result. Net P&L is what hits the balance.

• Spread. You buy at the ask and sell at the bid, so the spread is paid at entry. On a 0.8-pip EUR/USD spread with 0.5 lot, that is $4 before price moves.
• Commission. Charged per lot, often per side. At $3.50 per lot per side, a 0.5 lot round trip costs $3.50.
• Swap. Charged or credited for each night a position is held past rollover, with a triple charge one day a week to cover the weekend. Pair and direction decide the sign.

Example net calculation. Take the $100 gross EUR/USD win, held two nights at a swap of negative $1.80 per night.

• Gross: +$100.00
• Commission: negative $3.50
• Swap: negative $3.60
• Net: +$92.90

About 7 percent of the gross win went to costs, with the spread already paid inside the open and close prices. On a 5-pip scalp the same costs would eat most of the trade. Swap also feeds the "let it come back" temptation: holding a loser through rollover adds a cost every night, on top of a floating loss that already counts against the daily limit.