Nicaragua Human Rights and Anticorruption Act of 2018 This bill imposes restrictions and sanctions on institutions and individuals responsible for the Nicaraguan government's violence and infringement of the civil rights of protesters. The Department of the Treasury shall take action to restrict international financial institutions, including those affiliated with the World Bank Group and the Inter-American Development Bank, from extending financial or technical assistance to Nicaragua's government and to develop policies for future lending that will advance human rights in the country. The President shall impose sanctions on foreign persons responsible for acts of corruption, significant human rights violations, violence against protesters in Nicaragua, or provided material support to such actions. Sanctions include blocking the assets of sanctioned individuals and barring them from entry into the United States. The Department of State shall report to Congress about various topics, including Nicaragua's efforts strengthening the rule of law and democratic governance, combatting corruption, and protecting human rights. The President may temporarily waive the sanctions if the State Department certifies that Nicaragua has taken effective steps on these issues. The President may also waive the sanctions if it is in the national interests of the United States to do so. The bill also directs the State Department devise a strategy for engaging Nicaragua's civil society to strengthen human rights protections and anti-corruption efforts.