Direct answer: where to see forex spread in TOS
Forex spread in a platform such as TOS is found by looking at the bid and ask prices for the specific currency pair, then computing (or viewing) the difference: spread = ask − bid.
If TOS shows a bid-ask quote window for the pair, start there: select the instrument (the currency pair), open the quote/details view, and note the bid and ask columns. The spread is the gap between those two numbers.
How it works: bid, ask, and spread
A bid is the price at which someone is willing to buy the base/quote structure you trade, while an ask is the price at which someone is willing to sell. The bid-ask spread is the distance between these two prices.
In practice, you can verify the spread in two common ways:
- Quote calculation: locate bid and ask for the instrument and subtract bid from ask.
- Order-preview pricing: when you open an order ticket, the platform may show different prices for buying versus selling (reflecting ask for buys and bid for sells). Comparing the relevant displayed prices is another way to confirm the same spread concept.
Example checks you can run in your quote screen
Pick a liquid forex pair you can see in TOS (for example, one that has active bid and ask updates), then:
- Read the bid value.
- Read the ask value.
- Compute ask − bid and compare whether it matches any “spread” field shown in the quote/details view.
If you do not see a dedicated “spread” column, the calculation method still works as long as the platform provides both bid and ask for that moment.
To confirm you are looking at the right instrument, make sure the selected currency pair matches what you intend to trade (the bid/ask can differ across pairs), and ensure you are viewing the appropriate market data snapshot.
Relevant limitations and what can’t be assumed
Displayed bid and ask values can change quickly, so the spread you read is time-dependent. Also, not all instruments or data states are equally liquid, and the displayed quotes may reflect current conditions (such as market hours or liquidity).
Finally, “spread” in a platform quote is not the same as future trading outcome. Even with a correctly identified spread, execution depends on whether a trade can be filled at the shown prices and on how the order is handled by the platform.
If you want a consistent measurement, base it on the same quote moment and the same instrument definition, and avoid mixing different timeframes or quote sources within TOS.