The requirement to account for the emissions and removals corresponding to the Nationally Determined Contributions (NDCs) was introduced nearly three years ago by the Parties to the UNFCCC. Since then, there have been further negotiations, discussions, exchange forums and workshops. Yet, NDC accounting has not been fully carved out, thus far, and the demanded recommendations on how to orientate it are still pending, while being scheduled for 2018. As the result of a four-year long collaborative work of among country representatives from Colombia, Costa Rica and Mexico together with the Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH and the Institute for Applied Ecology (Öko-Institut, Berlin) several guides were edited based on the experiences of this group within an IKI (International Climate Initiative) financed project on NDC Accounting Rules. The guides were drafted after having supported rather country specific activities that focussed on the integration with other climate information systems in construction, especially MRV systems or components (e.g., as part of the SINAMECC in Costa Rica and the SIAC in Colombia) and they draw upon this rich experience. The first guide, a general NDC accounting guide, is applicable to quantified absolute mitigation targets and mitigation targets relating to an emissions baseline. It includes a proposal on the accounting for several mitigation targets comprised in an NDC, for example conditional and unconditional targets and keeps an eye on other more transparency related questions.