What is the real income multiplier?

Real income multiplier is the most commonly used method to analyze the multiplier effect of tourism. Inquiry of relevant public information to determine the income multiplier is the most commonly used method in analyzing the multiplier effect of tourism. Regarding the calculation of the income multiplier, there are two methods: one is called the orthodox income multiplier, which refers to the total value of income generated by tourism expenditure (the sum of direct, indirect, and induced income) and the direct income ratio of people. Another, called the unorthodox income multiplier, is the ratio of the total income generated by travel expenses to the original travel expenses.