Taxes are indeed an important factor for the state to finance the life of the country, in developed countries taxes are mandatory because they also provide maximum service so that benefits are evenly distributed, while in developing countries including my country taxes are only a few benefits felt, and according to reports that many tax officials who steal tax money.
Most countries are sure to use taxes to finance the needs to drive the country's economy. because with taxes the state can move the wheels of the economy.
although there may be those who have income from other sectors, the tax sector will still be a top priority.
I do not deny that in developing countries the tax sector is the main source of income, but what is returned for the welfare of the people is inversely proportional to not fulfilling the welfare of the people.