Here you can find the source of calculateMonthlyNominalInterestRate(final double effectiveInterestRate)
Calculates the monthly nominal interest rate for a given effective yearly interest rate.<br /> <br /> http://en.wikipedia.org/wiki/Effective_interest_rate
public static double calculateMonthlyNominalInterestRate(final double effectiveInterestRate)
//package com.java2s; /*//from ww w. j a v a 2s. c o m Copyright (C) 2013 u.wol@wwu.de This file is part of ComputationalEconomy. ComputationalEconomy is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. ComputationalEconomy is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with ComputationalEconomy. If not, see <http://www.gnu.org/licenses/>. */ public class Main { /** * Calculates the monthly nominal interest rate for a given effective yearly * interest rate.<br /> * <br /> * http://en.wikipedia.org/wiki/Effective_interest_rate */ public static double calculateMonthlyNominalInterestRate(final double effectiveInterestRate) { return effectiveInterestRate / (1 + ((11 / 24) * effectiveInterestRate)) / 12; } }