Standard Lot

A standard lot is 100,000 units of the base currency in a currency pair. When trading EUR/USD at a spot rate of 1.0850, a standard lot represents 100,000 euros and $108,500 of exposure. A 1-pip move equals $10 in profit or loss. Standard lots are the default size in interbank markets and institutional trading.

The economics of a standard lot

The math is simple and fixed. On EUR/USD at 1.0850, a standard lot is worth $108,500. On USD/JPY at 150.50, a standard lot is worth $1,505,000 (because you are buying dollars, and 100,000 dollars is the base). On any pair, each pip of movement is $10 (for non-yen pairs; yen pairs have a different calculation due to the different pip definition, but the result is usually $10 as well).

A 50-pip move in your favor is $500. A 100-pip loss against you is $1,000. This is why position sizing matters: on a $10,000 account, a single standard-lot trade that moves 100 pips against you wipes out 10% of your capital.

Who trades standard lots?

Banks and institutional trading desks deal in standard lots (and multiples thereof) because they operate with large capital bases and are comfortable with the resulting risk. A $100 million hedge fund thinks nothing of placing 100 standard lots (the equivalent of $10+ million notional exposure) when the market alignment looks right.

Retail traders with accounts in the $100,000+ range also trade standard lots, either as a single position or as a fraction of their overall portfolio. A retail trader with $50,000 might trade 0.5 standard lots — the equivalent of 50,000 units — which yields $5 per pip.

The barrier to entry is not regulatory but practical: the margin required to hold a standard lot with 50:1 leverage is around $2,000. Traders with smaller accounts cannot afford it and shift to mini or micro lots instead.

Standard lot vs. mini and micro

The relationship is purely arithmetical:

• 1 standard lot = 10 mini lots = 100 micro lots
• 1 pip on a standard lot = $10
• 1 pip on 10 mini lots = $10
• 1 pip on 100 micro lots = $10

So a trader moving from standard lots to mini lots gains granularity and can express half-sized positions (5 mini lots = 0.5 standard lots), but the per-pip risk is the same if total size is the same.

Execution and liquidity

On major currency pairs like EUR/USD, a single standard lot executes instantly with a tight spread. The interbank market is so deep that thousands of standard lots trade every second.

On exotic pairs, a standard lot may require negotiation. A dealer might take 30 seconds to quote; the spread might be 10–20 pips wide; execution might slip. This is why retail traders avoid standard-lot size on exotics and stick to mini or micro lots.

See also