Water conservancy construction funds are not collected everywhere. If an enterprise finds that it needs to pay the current water conservancy construction fund in the electronic tax bureau, the specific operation methods of the taxpayer's water conservancy construction fund declaration are as follows: first, the enterprise clicks on the tax declaration and payment interface, selects the comprehensive declaration of additional tax, clicks on the fill-in declaration form, checks the tax payment period, selects the water conservancy construction fund, and fills in the tax-free income of the current month, and the system will automatically calculate the corresponding taxes and fees. After the enterprise checks the amount, fill in the agent and ID number.