(1) The impact of personal income tax on savings. The impact of personal income tax on savings is mainly due to its impact on the actual income level of individuals. Whether and how much personal income is taxed will reduce disposable personal income and personal savings rate.

(2) The impact of interest tax on savings. Collecting interest tax on savings interest will reduce the income of savers, thus reducing the rate of return on savings and affecting individuals' propensity to save and consume. On the one hand, taxing savings interest will reduce the propensity to save and promote individuals to increase consumption; On the other hand, because savings behavior belongs to potential consumption, after taxing savings interest, it will force savers to improve their savings level and ensure their future consumption level. Therefore, the impact of interest tax on savings is twofold, both decreasing and increasing. At present, most countries in the world levy taxes on savings interest, and at the same time exempt or reduce interest tax on some specific savings items, which generally include the interest income of pension funds, retirement funds, government agencies, charities and non-profit organizations. This shows that governments in various countries are trying their best to play a regulatory role in interest income.

(3) The impact of indirect taxes on savings. Indirect taxes mainly affect savings by changing consumption tendency. Theoretically speaking, indirect tax plays a greater role than income tax in improving the savings rate. Although indirect tax will reduce disposable personal income, it will mainly affect consumer spending. When the savings rate or the average social savings level is fixed, the personal savings level will not decrease, that is, the "substitution effect" does not exist, and individual residents can only take measures to reduce consumption expenditure to offset tax expenditure.