diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..7a73a41
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,2 @@
+{
+}
\ No newline at end of file
diff --git a/jquery.priceformat.js b/jquery.priceformat.js
index f90ff55..d6eb2d4 100755
--- a/jquery.priceformat.js
+++ b/jquery.priceformat.js
@@ -61,6 +61,7 @@
       var insertPlusSign = options.insertPlusSign;
       var clearOnEmpty = options.clearOnEmpty;
       var leadingZero = options.leadingZero;
+      var allowZero = options.allowZero;
 
       // If insertPlusSign is on, it automatic turns on allowNegative, to work with Signs
       if (insertPlusSign) allowNegative = true;
@@ -111,8 +112,9 @@
 
       // format as price
       function price_format(str, ignore) {
-        if (!ignore && (str === '' || str == price_format('0', true)) && clearOnEmpty)
-          return '';
+        if (!ignore && (str === "" || (str === price_format("0", true) && !allowZero)) && clearOnEmpty) {
+          return "";
+        }
 
         // formatting settings
         var formatted = fill_with_zeroes(to_numbers(str));
@@ -233,7 +235,7 @@
         var price = price_format(str);
         if (str != price) set(price);
         var format = price_format('0', true);
-        if (price == format && str != '0' && clearOnEmpty) set('');
+        if (price == format && str != '0' && clearOnEmpty && !allowZero) set('');
       }
 
       // Add prefix on focus
@@ -356,6 +358,7 @@
     allowNegative: false,
     insertPlusSign: false,
     clearOnEmpty: false,
-    leadingZero: true
+    leadingZero: true,
+    allowZero: false
   };
 }));
diff --git a/jquery.priceformat.min.js b/jquery.priceformat.min.js
index e0e4ba3..4b5dbe0 100755
--- a/jquery.priceformat.min.js
+++ b/jquery.priceformat.min.js
@@ -1 +1 @@
-!function(n){"function"==typeof define&&define.amd?define(["jquery"],n):"undefined"!=typeof exports?module.exports=n(require("jquery")):n(jQuery)}(function(n){"use strict";n.fn.priceFormat=function(t){var t=n.extend(!0,{},n.fn.priceFormat.defaults,t);window.ctrl_down=!1;var i=!1;return n(window).bind("keyup keydown",function(n){return window.ctrl_down=n.ctrlKey,!0}),n(this).bind("keyup keydown",function(n){return i=n.metaKey,!0}),this.each(function(){function r(n){h.is("input")?h.val(n):h.html(n),h.trigger("pricechange")}function e(){return m=h.is("input")?h.val():h.html()}function o(n){for(var t="",i=0;i<n.length;i++){var r=n.charAt(i);0==t.length&&0==r&&(r=!1),r&&r.match(v)&&(x?t.length<x&&(t+=r):t+=r)}return t}function u(n){for(;n.length<_+1;)n="0"+n;return n}function f(t,i){if(!i&&(""===t||t==f("0",!0))&&P)return"";var r=u(o(t)),e="",a=0;0==_&&(y="",c="");var c=r.substr(r.length-_,_),s=r.substr(0,r.length-_);if(r=C?s+y+c:"0"!==s?s+y+c:y+c,b||""!=n.trim(b)){for(var l=s.length;l>0;l--){var p=s.substr(l-1,1);a++,a%3==0&&(p=b+p),e=p+e}e.substr(0,1)==b&&(e=e.substring(1,e.length)),r=0==_?e:e+y+c}return!F||0==s&&0==c||(r=-1!=t.indexOf("-")&&t.indexOf("+")<t.indexOf("-")?"-"+r:O?"+"+r:""+r),g&&(r=g+r),w&&(r+=w),r}function a(n){var t=n.keyCode?n.keyCode:n.which,e=String.fromCharCode(t),o=!1,u=m,a=f(u+e);(t>=48&&t<=57||t>=96&&t<=105)&&(o=!0),192==t&&(o=!0),8==t&&(o=!0),9==t&&(o=!0),13==t&&(o=!0),46==t&&(o=!0),37==t&&(o=!0),39==t&&(o=!0),!F||189!=t&&109!=t&&173!=t||(o=!0),!O||187!=t&&107!=t&&61!=t||(o=!0),t>=16&&t<=20&&(o=!0),27==t&&(o=!0),t>=33&&t<=40&&(o=!0),t>=44&&t<=46&&(o=!0),(window.ctrl_down||i)&&(86==t&&(o=!0),67==t&&(o=!0),88==t&&(o=!0),82==t&&(o=!0),84==t&&(o=!0),76==t&&(o=!0),87==t&&(o=!0),81==t&&(o=!0),78==t&&(o=!0),65==t&&(o=!0)),o||(n.preventDefault(),n.stopPropagation(),u!=a&&r(a))}function c(){var n=e(),t=f(n);n!=t&&r(t),t==f("0",!0)&&"0"!=n&&P&&r("")}function s(){h.val(g+e())}function l(){h.val(e()+w)}function p(){if(""!=n.trim(g)&&S){r(e().split(g)[1])}}function d(){if(""!=n.trim(w)&&k){r(e().split(w)[0])}}var h=n(this),m="",v=/[0-9]/;m=h.is("input")?h.val():h.html();var g=t.prefix,w=t.suffix,y=t.centsSeparator,b=t.thousandsSeparator,x=t.limit,_=t.centsLimit,S=t.clearPrefix,k=t.clearSuffix,F=t.allowNegative,O=t.insertPlusSign,P=t.clearOnEmpty,C=t.leadingZero;O&&(F=!0),h.bind("keydown.price_format",a),h.bind("keyup.price_format",c),h.bind("focusout.price_format",c),S&&(h.bind("focusout.price_format",function(){p()}),h.bind("focusin.price_format",function(){s()})),k&&(h.bind("focusout.price_format",function(){d()}),h.bind("focusin.price_format",function(){l()})),e().length>0&&(c(),p(),d())})},n.fn.unpriceFormat=function(){return n(this).unbind(".price_format")},n.fn.unmask=function(){var t,i="";t=n(this).is("input")?n(this).val()||[]:n(this).html();for(var r=0;r<t.length;r++)isNaN(t[r])&&"-"!=t[r]||(i+=t[r]);return i},n.fn.priceToFloat=function(){var t;return t=n(this).is("input")?n(this).val()||[]:n(this).html(),parseFloat(t.replace(/[^0-9\-\.]/g,""))},n.fn.priceFormat.defaults={prefix:"US$ ",suffix:"",centsSeparator:".",thousandsSeparator:",",limit:!1,centsLimit:2,clearPrefix:!1,clearSufix:!1,allowNegative:!1,insertPlusSign:!1,clearOnEmpty:!1,leadingZero:!0}});
\ No newline at end of file
+!function(n){"function"==typeof define&&define.amd?define(["jquery"],n):"undefined"!=typeof exports?module.exports=n(require("jquery")):n(jQuery)}(function(n){"use strict";n.fn.priceFormat=function(t){var t=n.extend(!0,{},n.fn.priceFormat.defaults,t);window.ctrl_down=!1;var i=!1;return n(window).bind("keyup keydown",function(n){return window.ctrl_down=n.ctrlKey,!0}),n(this).bind("keyup keydown",function(n){return i=n.metaKey,!0}),this.each(function(){function r(n){h.is("input")?h.val(n):h.html(n),h.trigger("pricechange")}function e(){return m=h.is("input")?h.val():h.html()}function o(n){for(var t="",i=0;i<n.length;i++){var r=n.charAt(i);0==t.length&&0==r&&(r=!1),r&&r.match(v)&&(x?t.length<x&&(t+=r):t+=r)}return t}function u(n){for(;n.length<_+1;)n="0"+n;return n}function a(t,i){if(!i&&(""===t||t===a("0",!0)&&!N)&&P)return"";var r=u(o(t)),e="",f=0;0==_&&(y="",c="");var c=r.substr(r.length-_,_),s=r.substr(0,r.length-_);if(r=C?s+y+c:"0"!==s?s+y+c:y+c,b||""!=n.trim(b)){for(var l=s.length;l>0;l--){var p=s.substr(l-1,1);f++,f%3==0&&(p=b+p),e=p+e}e.substr(0,1)==b&&(e=e.substring(1,e.length)),r=0==_?e:e+y+c}return!F||0==s&&0==c||(r=-1!=t.indexOf("-")&&t.indexOf("+")<t.indexOf("-")?"-"+r:O?"+"+r:""+r),g&&(r=g+r),w&&(r+=w),r}function f(n){var t=n.keyCode?n.keyCode:n.which,e=String.fromCharCode(t),o=!1,u=m,f=a(u+e);(t>=48&&t<=57||t>=96&&t<=105)&&(o=!0),192==t&&(o=!0),8==t&&(o=!0),9==t&&(o=!0),13==t&&(o=!0),46==t&&(o=!0),37==t&&(o=!0),39==t&&(o=!0),!F||189!=t&&109!=t&&173!=t||(o=!0),!O||187!=t&&107!=t&&61!=t||(o=!0),t>=16&&t<=20&&(o=!0),27==t&&(o=!0),t>=33&&t<=40&&(o=!0),t>=44&&t<=46&&(o=!0),(window.ctrl_down||i)&&(86==t&&(o=!0),67==t&&(o=!0),88==t&&(o=!0),82==t&&(o=!0),84==t&&(o=!0),76==t&&(o=!0),87==t&&(o=!0),81==t&&(o=!0),78==t&&(o=!0),65==t&&(o=!0)),o||(n.preventDefault(),n.stopPropagation(),u!=f&&r(f))}function c(){var n=e(),t=a(n);n!=t&&r(t),t==a("0",!0)&&"0"!=n&&P&&!N&&r("")}function s(){h.val(g+e())}function l(){h.val(e()+w)}function p(){if(""!=n.trim(g)&&S){r(e().split(g)[1])}}function d(){if(""!=n.trim(w)&&k){r(e().split(w)[0])}}var h=n(this),m="",v=/[0-9]/;m=h.is("input")?h.val():h.html();var g=t.prefix,w=t.suffix,y=t.centsSeparator,b=t.thousandsSeparator,x=t.limit,_=t.centsLimit,S=t.clearPrefix,k=t.clearSuffix,F=t.allowNegative,O=t.insertPlusSign,P=t.clearOnEmpty,C=t.leadingZero,N=t.allowZero;O&&(F=!0),h.bind("keydown.price_format",f),h.bind("keyup.price_format",c),h.bind("focusout.price_format",c),S&&(h.bind("focusout.price_format",function(){p()}),h.bind("focusin.price_format",function(){s()})),k&&(h.bind("focusout.price_format",function(){d()}),h.bind("focusin.price_format",function(){l()})),e().length>0&&(c(),p(),d())})},n.fn.unpriceFormat=function(){return n(this).unbind(".price_format")},n.fn.unmask=function(){var t,i="";t=n(this).is("input")?n(this).val()||[]:n(this).html();for(var r=0;r<t.length;r++)isNaN(t[r])&&"-"!=t[r]||(i+=t[r]);return i},n.fn.priceToFloat=function(){var t;return t=n(this).is("input")?n(this).val()||[]:n(this).html(),parseFloat(t.replace(/[^0-9\-\.]/g,""))},n.fn.priceFormat.defaults={prefix:"US$ ",suffix:"",centsSeparator:".",thousandsSeparator:",",limit:!1,centsLimit:2,clearPrefix:!1,clearSufix:!1,allowNegative:!1,insertPlusSign:!1,clearOnEmpty:!1,leadingZero:!0,allowZero:!1}});
\ No newline at end of file
diff --git a/prototype.priceformat.js b/prototype.priceformat.js
index 95053d1..33052f3 100644
--- a/prototype.priceformat.js
+++ b/prototype.priceformat.js
@@ -10,7 +10,8 @@ NumberFormat = Class.create( {
 			centsLimit : 2,
 			clearPrefix : false,
 			allowNegative : false,
-			clearOnEmpty: false
+			clearOnEmpty: false,
+			allowZero: false
 		}, options);
 
 		this.is_number = /[0-9]/;
@@ -24,6 +25,7 @@ NumberFormat = Class.create( {
                 this.clearPrefix = options.clearPrefix;
                 this.allowNegative = options.allowNegative;
                 this.clearOnEmpty = options.clearOnEmpty;
+                this.allowZero = options.allowZero;
                 if (this.clearPrefix) {
                         Event.observe(this.el, 'blur', this.clearPrefix.bind(this));
                         Event.observe(this.el, 'focus', this.addPrefix.bind(this));
@@ -127,7 +129,7 @@ NumberFormat = Class.create( {
         },
 
         priceFormat : function(str, ignore) {
-                if(!ignore && (str === '' || str == this.priceFormat('0', true)) && clearOnEmpty) {
+                if(!ignore && (str === '' || (str == this.priceFormat('0', true) && !allowZero)) && clearOnEmpty) {
 
                         return '';
                 }
diff --git a/prototype.priceformat.min.js b/prototype.priceformat.min.js
index de1025c..4d581f7 100644
--- a/prototype.priceformat.min.js
+++ b/prototype.priceformat.min.js
@@ -1 +1 @@
-NumberFormat=Class.create({initialize:function(t,e){this.el=$(t);var e=Object.extend({prefix:"US$ ",centsSeparator:".",thousandsSeparator:",",limit:!1,centsLimit:2,clearPrefix:!1,allowNegative:!1,clearOnEmpty:!1},e);this.is_number=/[0-9]/,this.prefix=e.prefix,this.centsSeparator=e.centsSeparator,this.thousandsSeparator=e.thousandsSeparator,this.limit=e.limit,this.centsLimit=e.centsLimit,this.clearPrefix=e.clearPrefix,this.allowNegative=e.allowNegative,this.clearOnEmpty=e.clearOnEmpty,this.clearPrefix&&(Event.observe(this.el,"blur",this.clearPrefix.bind(this)),Event.observe(this.el,"focus",this.addPrefix.bind(this))),Event.observe(this.el,"keyup",this.priceIt.bind(this)),Event.observe(this.el,"keydown",this.keyCheck.bind(this)),window.ctrl_down=!1,Event.observe(window,"keyup",function(t){return window.ctrl_down=t.ctrlKey,!0}),Event.observe(window,"keydown",function(t){return window.ctrl_down=t.ctrlKey,!0}),this.el.value.length>0&&(this.priceIt(),this.clearPrefix())},keyCheck:function(t){var e=t.keyCode?t.keyCode:t.which,i=String.fromCharCode(e),r=!1,s=t.target.value,a=this.priceFormat(s+i);(e>=48&&e<=57||e>=96&&e<=105)&&(r=!0),8==e&&(r=!0),9==e&&(r=!0),13==e&&(r=!0),17==e&&(r=!0),46==e&&(r=!0),35==e&&(r=!0),36==e&&(r=!0),37==e&&(r=!0),39==e&&(r=!0),!this.allowNegative||189!=e&&109!=e||(r=!0),window.ctrl_down&&(86==e&&(r=!0),67==e&&(r=!0),88==e&&(r=!0),82==e&&(r=!0),84==e&&(r=!0),76==e&&(r=!0),87==e&&(r=!0),81==e&&(r=!0),78==e&&(r=!0),65==e&&(r=!0)),r||(t.preventDefault(),t.stopPropagation(),s!=a&&(t.target.value=a))},toNumbers:function(t){for(var e="",i=0;i<t.length;i++)char=t.charAt(i),0==e.length&&0==char&&(char=!1),char&&char.match(this.is_number)&&(this.limit?e.length<this.limit&&(e+=char):e+=char);return e},priceFormat:function(t,e){if(!e&&(""===t||t==this.priceFormat("0",!0))&&clearOnEmpty)return"";var i=this.fillWithZeroes(this.toNumbers(t)),r="",s=0,a=i.substr(i.length-this.centsLimit,this.centsLimit),n=i.substr(0,i.length-this.centsLimit);if(i=n+this.centsSeparator+a,this.thousandsSeparator){for(var h=n.length;h>0;h--)char=n.substr(h-1,1),s++,s%3==0&&(char=this.thousandsSeparator+char),r=char+r;r.substr(0,1)==this.thousandsSeparator&&(r=r.substring(1,r.length)),i=r+this.centsSeparator+a}return!this.allowNegative||t.indexOf("-")==-1||0==n&&0==a||(i="-"+i),this.prefix&&(i=this.prefix+i),i},fillWithZeroes:function(t){for(;t.length<this.centsLimit+1;)t="0"+t;return t},priceIt:function(){var t=this.el.value,e=this.priceFormat(t);t!=e&&(this.el.value=e)},addPrefix:function(){var t=el.value;el.value=this.prefix+t},clearPrefix:function(){if(""!=prefix.trim()&&this.clearPrefix){var t=el.value.split(this.prefix);el.value=t[1]}}});
\ No newline at end of file
+NumberFormat=Class.create({initialize:function(t,e){this.el=$(t);var e=Object.extend({prefix:"US$ ",centsSeparator:".",thousandsSeparator:",",limit:!1,centsLimit:2,clearPrefix:!1,allowNegative:!1,clearOnEmpty:!1,allowZero:!1},e);this.is_number=/[0-9]/,this.prefix=e.prefix,this.centsSeparator=e.centsSeparator,this.thousandsSeparator=e.thousandsSeparator,this.limit=e.limit,this.centsLimit=e.centsLimit,this.clearPrefix=e.clearPrefix,this.allowNegative=e.allowNegative,this.clearOnEmpty=e.clearOnEmpty,this.allowZero=e.allowZero,this.clearPrefix&&(Event.observe(this.el,"blur",this.clearPrefix.bind(this)),Event.observe(this.el,"focus",this.addPrefix.bind(this))),Event.observe(this.el,"keyup",this.priceIt.bind(this)),Event.observe(this.el,"keydown",this.keyCheck.bind(this)),window.ctrl_down=!1,Event.observe(window,"keyup",function(t){return window.ctrl_down=t.ctrlKey,!0}),Event.observe(window,"keydown",function(t){return window.ctrl_down=t.ctrlKey,!0}),this.el.value.length>0&&(this.priceIt(),this.clearPrefix())},keyCheck:function(t){var e=t.keyCode?t.keyCode:t.which,i=String.fromCharCode(e),r=!1,s=t.target.value,a=this.priceFormat(s+i);(e>=48&&e<=57||e>=96&&e<=105)&&(r=!0),8==e&&(r=!0),9==e&&(r=!0),13==e&&(r=!0),17==e&&(r=!0),46==e&&(r=!0),35==e&&(r=!0),36==e&&(r=!0),37==e&&(r=!0),39==e&&(r=!0),!this.allowNegative||189!=e&&109!=e||(r=!0),window.ctrl_down&&(86==e&&(r=!0),67==e&&(r=!0),88==e&&(r=!0),82==e&&(r=!0),84==e&&(r=!0),76==e&&(r=!0),87==e&&(r=!0),81==e&&(r=!0),78==e&&(r=!0),65==e&&(r=!0)),r||(t.preventDefault(),t.stopPropagation(),s!=a&&(t.target.value=a))},toNumbers:function(t){for(var e="",i=0;i<t.length;i++)char=t.charAt(i),0==e.length&&0==char&&(char=!1),char&&char.match(this.is_number)&&(this.limit?e.length<this.limit&&(e+=char):e+=char);return e},priceFormat:function(t,e){if(!e&&(""===t||t==this.priceFormat("0",!0)&&!allowZero)&&clearOnEmpty)return"";var i=this.fillWithZeroes(this.toNumbers(t)),r="",s=0,a=i.substr(i.length-this.centsLimit,this.centsLimit),h=i.substr(0,i.length-this.centsLimit);if(i=h+this.centsSeparator+a,this.thousandsSeparator){for(var n=h.length;n>0;n--)char=h.substr(n-1,1),s++,s%3==0&&(char=this.thousandsSeparator+char),r=char+r;r.substr(0,1)==this.thousandsSeparator&&(r=r.substring(1,r.length)),i=r+this.centsSeparator+a}return!this.allowNegative||-1==t.indexOf("-")||0==h&&0==a||(i="-"+i),this.prefix&&(i=this.prefix+i),i},fillWithZeroes:function(t){for(;t.length<this.centsLimit+1;)t="0"+t;return t},priceIt:function(){var t=this.el.value,e=this.priceFormat(t);t!=e&&(this.el.value=e)},addPrefix:function(){var t=el.value;el.value=this.prefix+t},clearPrefix:function(){if(""!=prefix.trim()&&this.clearPrefix){var t=el.value.split(this.prefix);el.value=t[1]}}});
\ No newline at end of file