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Why a pip on EURGBP pays more than $10 on a USD account

A small thing that trips people up when sizing crosses.

On EURGBP the quote currency is GBP. So one pip on one standard lot is 10 pounds, not 10 dollars. On a USD account the platform converts that at the current GBPUSD rate. At GBPUSD 1.27, a pip comes to $12.70 per lot.

That means if you size EURGBP as if it were $10 a pip, you're taking 27% more risk than you think. A 6 pip stop on one lot isn't $60, it's about $76.

And the value moves with cable. If GBPUSD falls to 1.20, the same pip is $12.00. If it rises to 1.35, it's $13.50. So your risk per pip on EURGBP shifts even when EURGBP itself is still.

The same idea applies to any pair where the quote currency isn't your account currency. EURJPY, AUDCAD, NZDCHF, all of them have pip values that depend on a second exchange rate.

Simple fix: use a position size calculator that pulls live rates, or do it by hand. For EURGBP on a USD account, lots equals risk in dollars divided by (stop in pips times 10 times GBPUSD). For $50 risk and a 6 pip stop at GBPUSD 1.27, that's 50 divided by 76.2, so about 0.66 lots.

Most platforms show the value in the contract specification window as tick value. I'd look at it for every cross you trade.

The cable link is a good reminder. The same logic applies to EURJPY, GBPJPY and AUDJPY, where the pip value moves with USDJPY. For crosses where both currencies differ from the account currency, the pip value can change noticeably even during a single week of strong moves. A sizing script that reads the current tick value each time, rather than a fixed table, avoids this. For manual traders, rechecking the pip value at the start of each week is a reasonable compromise.

In MT5 you can see the current tick value in the Market Watch window by adding the column, or in the symbol specification. For EURGBP on a five digit quote, the tick size is 0.00001 and the tick value is a tenth of the pip value, so around $1.27 per lot per point. If the number you see doesn't match your mental sum, trust the platform and work out why. Sometimes the account currency isn't what you think it is, especially on prop accounts. Five digit quotes give the extra decimal, which is where the tenth comes from.

This affects journals too. If you log results in pips and convert to money later using a fixed $10, the numbers will be wrong for every cross. Over a month of EURGBP trades the error can be a few hundred dollars on decent size. Logging the actual realised P&L from the platform alongside the pips avoids that. It's also an easy way to catch sizing mistakes, since the money result will look too large compared with the pips. A journal that logs the real money result also makes cost checks easier.

One more case is the reverse, a pair where the base currency is your account currency. On USDJPY or USDCHF with a USD account, the pip value is in yen or francs and gets converted at the pair's own rate. So when USDJPY rises, the dollar value of a pip goes down. At 140 a pip is about $7.14, at 160 it's $6.25. If you trade USDJPY through a long trend, your fixed-lot risk per pip shrinks or grows over months without you changing anything. It's a slow drift rather than a jump, so it's easy to miss.

For anyone sizing by hand, it helps to keep a small sheet with pip values per lot for the pairs you trade, updated once a week at the Sunday open. It takes two minutes. You don't need exact values to the cent, just close enough that you aren't off by 20% or more. The bigger risk is forgetting the conversion entirely on a cross, which is the mistake I'd guard against first. EURJPY and the AUD crosses go on the same sheet, since they need the same treatment. Refreshing it on Sunday keeps it close enough.

Some brokers don't trade crosses as separate instruments. They compute them from the two USD legs. EURGBP might be quoted as EURUSD divided by GBPUSD, with a markup.

That has a cost. Both legs carry their own spread, and the derived price inherits both. Even if each leg is tight, the cross can be noticeably wider than the interbank EURGBP spread.

Real cross liquidity exists on the interbank market, and brokers with direct access to it can quote tighter. The difference between a synthetic and a direct quote is visible in how the spread behaves when the two legs are volatile.

A test: compare the EURGBP spread to the sum of the EURUSD and GBPUSD spreads during a quiet hour and a volatile one. If it tracks the sum, the cross is probably synthetic.

Which brokers quote crosses directly, and does it show up in the fill quality?