Maker fees - If you are adding liquidity to order book, you become the maker. Maker fees are 0.59% of the executed amount.
Taker fees - As your order goes to the order book and it removes liquidity, then you will be considered as a taker. Your transaction fees will be 1.18% of the matched amount.
1. For buy orders - When you place an order, order amount with 1.18% will be deducted from your Rs account. Based on the order execution, if you become the maker, 0.59% of the executed amount will be refunded back to your Rs account.
2. If you do not have sufficient balance, you will not able to place an order. Ensure you place a deposit order equivalent of order amount including maker/taker fees before placing a buy order.