From 5d8cd54dfbc57b9883f0184ed5f861be6b35bb4c Mon Sep 17 00:00:00 2001
From: Keith Woodlock <keithwoodlock@gmail.com>
Date: Mon, 12 Aug 2013 15:23:36 +0100
Subject: [PATCH] MIFOSX-601: fix issue with negative interest been calculated
 due to incorrect calculation of end of day balance.

---
 .../portfolio/savings/domain/SavingsAccountTransaction.java  | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/mifosng-provider/src/main/java/org/mifosplatform/portfolio/savings/domain/SavingsAccountTransaction.java b/mifosng-provider/src/main/java/org/mifosplatform/portfolio/savings/domain/SavingsAccountTransaction.java
index 4dce66684..edae019c0 100644
--- a/mifosng-provider/src/main/java/org/mifosplatform/portfolio/savings/domain/SavingsAccountTransaction.java
+++ b/mifosng-provider/src/main/java/org/mifosplatform/portfolio/savings/domain/SavingsAccountTransaction.java
@@ -277,7 +277,10 @@ public final class SavingsAccountTransaction extends AbstractPersistable<Long> {
         if (isDeposit()) {
             endOfDayBalance = openingBalance.plus(getAmount(currency));
         } else if (isWithdrawal() || isWithdrawalFeeAndNotReversed()) {
-            endOfDayBalance = openingBalance.minus(getAmount(currency));
+
+            if (openingBalance.isGreaterThanZero()) {
+                endOfDayBalance = openingBalance.minus(getAmount(currency));
+            }
         }
 
         return EndOfDayBalance.from(getTransactionLocalDate(), openingBalance, endOfDayBalance, this.balanceNumberOfDays);