When you're in Scalper Mode and you tap Buy or Sell, the order goes to the exchange instantly. But how it gets executed and at what price depends on whether your 1-tap order is configured as a Market order or a Limit order. Getting this setting right for your trading style can make a meaningful difference to how your entries and exits actually fill.
A Market order executes immediately at the best available price at that moment. You get filled fast, but you don't control the exact price. This works well in highly liquid contracts like Bank Nifty where the bid-ask spread is tight and the risk of slippage is relatively low. If speed of execution matters more than price precision which is often the case during fast expiry moves , Market is the right choice.
A Limit order lets you define the price at which you're willing to buy or sell. Your order only executes if the market reaches that price, which means you have more control over your fill but no guarantee of execution. This is more useful in situations where you want to avoid paying a wide spread, or when you're entering a position in a slightly less liquid contract where the difference between bid and ask is large enough to matter.
When you select Limit as your 1-tap order type on Sahi, you also choose how the limit price should be calculated. There are three options — Best Bid/Offer, LTP, and Midpoint of Bid/Offer.
Best Bid/Offer sets your limit price at the best available bid or offer at the time of placing the order. For a buy order this means the best ask price, and for a sell order the best bid price. This gives you the highest chance of getting filled quickly while still placing a limit order rather than a market one.
LTP sets your limit price at the Last Traded Price the price at which the contract last changed hands. This is a common reference point for traders who want to enter close to where the market currently is without chasing the spread.
Midpoint of Bid/Offer sets the limit price exactly halfway between the current bid and ask. This is particularly useful when the spread is wide instead of paying the full ask on a buy or accepting the full bid on a sell, you're splitting the difference and potentially getting a better fill than either the bid or ask alone would give you.
Whatever you configure here becomes the default for all your future 1-tap trades until you change it again.
Step 1 — You can reach this setting in two ways. Either open Scalper Mode, tap the three dots at the top, and select Order Defaults — or go to Profile → Order Defaults.
Step 2 — Open 1-Tap Order Settings Tap on 1-Tap Buy/Sell.
Step 3 — Choose Market or Limit Select your preferred execution type. If you choose Limit, you will also be prompted to select your preferred limit price method — Best Bid/Offer, LTP, or Midpoint of Bid/Offer.
Step 1 — Click on the Settings icon next to the 1-Tap order button on Sahi Web.
Step 2 — Choose Market or Limit Under 1-Tap Buy/Sell, select your preferred order type. If Limit is selected, choose between Best Bid/Offer, LTP, or Midpoint of Bid/Offer as your limit price reference.