diff --git a/accounting.js b/accounting.js
index 755a3d5..0f2e149 100644
--- a/accounting.js
+++ b/accounting.js
@@ -194,13 +194,21 @@
 		decimal = decimal || lib.settings.number.decimal;
 
 		 // Build regex to strip out everything except digits, decimal point and minus sign:
-		var regex = new RegExp("[^0-9-" + decimal + "]", ["g"]),
-			unformatted = parseFloat(
+		var regex = new RegExp("[^0-9-(-)-" + decimal + "]", ["g"]),
+			unformattedValueString =
 				("" + value)
-				.replace(/\((.*)\)/, "-$1") // replace bracketed values with negatives
-				.replace(regex, '')         // strip out any cruft
-				.replace(decimal, '.')      // make sure decimal point is standard
-			);
+				.replace(regex, '')							// strip out any cruft
+				.replace(/\(([-]*\d*[^)]?\d+)\)/g, "-$1") // replace bracketed numeric values with negative, (100.1) = -100.1
+				.replace(/\((.*)\)/, '')				// remove any brackets that do not have numeric value
+				.replace(decimal, '.');					// make sure decimal point is standard
+
+		/**
+		 * Handling -ve number and bracket, eg.
+		 * (-100) = 100, -(100) = 100, --100 = 100
+		 */
+		var negative = (unformattedValueString.match(/-/g) || 2).length % 2,
+			absUnformatted = parseFloat(unformattedValueString.replace(/-/g, '')),
+			unformatted = absUnformatted * ((negative) ? -1 : 1);
 
 		// This will fail silently which may cause trouble, let's wait and see:
 		return !isNaN(unformatted) ? unformatted : 0;
diff --git a/tests/jasmine/core/unformatSpec.js b/tests/jasmine/core/unformatSpec.js
index 1f0f17e..b4991db 100644
--- a/tests/jasmine/core/unformatSpec.js
+++ b/tests/jasmine/core/unformatSpec.js
@@ -13,7 +13,24 @@ describe('unformat()', function(){
         expect( accounting.unformat('&*()$ -123,456') ).toBe( -123456 );
         expect( accounting.unformat(';$@#$%^&-123,456.78') ).toBe( -123456.78 );
     });
-    
+
+    it('should handle negative numbers and brackets', function(){
+        expect( accounting.unformat('(123,456)') ).toBe( -123456 );
+        expect( accounting.unformat('(123)456') ).toBe( -123456 );
+        expect( accounting.unformat('(IND)123') ).toBe( 123 );
+        expect( accounting.unformat('IND(123)') ).toBe( -123 );
+        expect( accounting.unformat('-(123)') ).toBe( 123 );
+        expect( accounting.unformat('(-123)') ).toBe( 123 );
+        expect( accounting.unformat('(1,234.56)') ).toBe( -1234.56 );
+    });
+
+    it('should handle negative deciaml numbers within brackets', function(){
+        expect( accounting.settings.number.deciaml = '@'; 
+                accounting.unformat('(1,234@56)') ).toBe( -1234.56 );
+        expect( accounting.settings.number.deciaml = '@'; 
+                accounting.unformat('(1,234.56)') ).toBe( -123456 );
+    });
+
     it('should accept different decimal separators', function(){    
         expect( accounting.unformat('$ 123,456', ',') ).toBe( 123.456 );
         expect( accounting.unformat('$ 123456|78', '|') ).toBe( 123456.78 );