This means that you need to declare value-added tax and additional tax first, and then declare water conservancy construction fund 1. Enterprises log in to the electronic tax bureau, enter the page where I want to pay taxes, and choose to declare taxes. 2. Select the non-tax income declaration, and select the general declaration form of non-tax income in the list of declaration items. 3. Select the plan declaration, and then click Enter Declaration. 4. Open the page of filling in the declaration form, check the special income for water conservancy construction of the project, select the local water conservancy construction fund for the project, truthfully fill in the tax basis, the system automatically calculates the tax payable, and click the declaration in the upper right corner to complete the declaration of water conservancy fund. The special income of water conservancy construction is reported as 1% of the sales income.