Knowing how much it will cost to implement an NDC is the first step to making strategic decisions about which financial instruments and policies are needed. Bringing numbers to the table helps different stakeholders understand what implementation may entail in practice and weigh the costs and benefits of potential climate actions. For developing countries, it may help them understand how much funding will be needed from external sources. The following instruments can be used in identifying priority areas and creating high-level planning documents for governments to follow as they seek to finance their NDCs.