the merchants in ancient india had to give tax for their king which continues in the present day too. They give something to the king as a gift and in return the king will provide them with his soldiers to protect them from the robbers when travelling through the dark thick forests. The most common problem faced by the merchants at the past and the present is that they had to give a lot tax or iqta. They suffer from it a lot and wasn't afford to give such huge amounts. At the ancient the tax was paid to the ruler as grains or something else they own where in the present it is money.