diff --git a/additional-methods.js b/additional-methods.js
index a133df787..9e3fd4836 100644
--- a/additional-methods.js
+++ b/additional-methods.js
@@ -155,7 +155,337 @@ jQuery.validator.addMethod("dateITA", function(value, element) {
 
 jQuery.validator.addMethod("dateNL", function(value, element) {
 	return this.optional(element) || /^(0?[1-9]|[12]\d|3[01])[\.\/\-](0?[1-9]|1[012])[\.\/\-]([12]\d)?(\d\d)$/.test(value);
-}, "Vul hier een geldige datum in.");
+}, "Please enter a correct date");
+
+/**
+ * Dutch phone numbers have 10 digits (or 11 and start with +31).
+ */
+jQuery.validator.addMethod("phoneNL", function(value, element) {
+	return this.optional(element) || /^((\+|00(\s|\s?\-\s?)?)31(\s|\s?\-\s?)?(\(0\)[\-\s]?)?|0)[1-9]((\s|\s?\-\s?)?[0-9]){8}$/.test(value);
+}, "Please specify a valid phone number.");
+
+jQuery.validator.addMethod("mobileNL", function(value, element) {
+	return this.optional(element) || /^((\+|00(\s|\s?\-\s?)?)31(\s|\s?\-\s?)?(\(0\)[\-\s]?)?|0)6((\s|\s?\-\s?)?[0-9]){8}$/.test(value);
+}, "Please specify a valid mobile number");
+
+jQuery.validator.addMethod("postalcodeNL", function(value, element) {
+	return this.optional(element) || /^[1-9][0-9]{3}\s?[a-zA-Z]{2}$/.test(value);
+}, "Please specify a valid postal code");
+
+/**
+ * Dutch bank account numbers (not 'giro' numbers) have 9 digits
+ * and pass the '11 check'.
+ * We accept the notation with spaces, as that is common.
+ * acceptable: 123456789 or 12 34 56 789
+ */
+jQuery.validator.addMethod("bankaccountNL", function(value, element) {
+	if (this.optional(element)) {
+		return true;
+	}
+	if (!(/^[0-9]{9}|([0-9]{2} ){3}[0-9]{3}$/.test(value))) {
+		return false;
+	}
+	// now '11 check'
+	var account = value.replace(/ /g,''); // remove spaces
+	var sum = 0;
+	var len = account.length;
+	for (var pos=0; pos<len; pos++) {
+		var factor = len - pos;
+		var digit = account.substring(pos, pos+1);
+		sum = sum + factor * digit;
+	}
+	return sum % 11 === 0;
+}, "Please specify a valid bank account number");
+
+/**
+ * Dutch giro account numbers (not bank numbers) have max 7 digits
+ */
+jQuery.validator.addMethod("giroaccountNL", function(value, element) {
+	return this.optional(element) || /^[0-9]{1,7}$/.test(value);
+}, "Please specify a valid giro account number");
+
+jQuery.validator.addMethod("bankorgiroaccountNL", function(value, element) {
+	return this.optional(element) || 
+			($.validator.methods["bankaccountNL"].call(this, value, element)) ||
+			($.validator.methods["giroaccountNL"].call(this, value, element));
+}, "Please specify a valid bank or giro account number");
+
+/**
+ * IBAN is the international bank account number. 
+ * It has a country - specific format, that is checked here too 
+ */
+jQuery.validator.addMethod("iban", function(value, element) {
+	// some quick simple tests to prevent needless work
+	if (this.optional(element)) {
+		return true;
+	}
+	if (!(/^([a-zA-Z0-9]{4} ){2,8}[a-zA-Z0-9]{1,4}|[a-zA-Z0-9]{12,34}$/.test(value))) {
+		return false;
+	}
+	
+	// check the country code and find the country specific format
+	var iban = value.replace(/ /g,'').toUpperCase(); // remove spaces and to upper case
+	var countrycode = iban.substring(0,2);
+	var bbanformat = "";
+	var bbanpattern = "";
+	switch (countrycode) {
+		case 'AL':
+			bbanformat = "8n16c";
+			break;
+		case 'AD':
+			bbanformat = "8n12c";
+			break;
+		case 'AT':
+			bbanformat = "16n";
+			break;
+		case 'AZ':
+			bbanformat = "4c20n";
+			break;
+		case 'BE':
+			bbanformat = "12n";
+			break;
+		case 'BH':
+			bbanformat = "4a14c";
+			break;
+		case 'BA':
+			bbanformat = "16n";
+			break;
+		case 'BR':
+			bbanformat = "23n1a1c";
+			break;
+		case 'BG':
+			bbanformat = "4a6n8c";
+			break;
+		case 'CR':
+			bbanformat = "17n";
+			break;
+		case 'HR':
+			bbanformat = "17n";
+			break;
+		case 'CY':
+			bbanformat = "8n16c";
+			break;
+		case 'CZ':
+			bbanformat = "20n";
+			break;
+		case 'DK':
+			bbanformat = "14n";
+			break;
+		case 'DO':
+			bbanformat = "4a20n";
+			break;
+		case 'EE':
+			bbanformat = "16n";
+			break;
+		case 'FO':
+			bbanformat = "14n";
+			break;
+		case 'FI':
+			bbanformat = "14n";
+			break;
+		case 'FR':
+			bbanformat = "10n11c2n";
+			break;
+		case 'GE':
+			bbanformat = "2c16n";
+			break;
+		case 'DE':
+			bbanformat = "18n";
+			break;
+		case 'GI':
+			bbanformat = "4a15c";
+			break;
+		case 'GR':
+			bbanformat = "7n16c";
+			break;
+		case 'GL':
+			bbanformat = "14n";
+			break;
+		case 'GT':
+			bbanformat = "4c20c";
+			break;
+		case 'HU':
+			bbanformat = "24n";
+			break;
+		case 'IS':
+			bbanformat = "22n";
+			break;
+		case 'IE':
+			bbanformat = "4c14n";
+			break;
+		case 'IL':
+			bbanformat = "19n";
+			break;
+		case 'IT':
+			bbanformat = "1a10n12c";
+			break;
+		case 'KZ':
+			bbanformat = "3n13c";
+			break;
+		case 'KW':
+			bbanformat = "4a22c";
+			break;
+		case 'LV':
+			bbanformat = "4a13c";
+			break;
+		case 'LB':
+			bbanformat = "4n20c";
+			break;
+		case 'LI':
+			bbanformat = "5n12c";
+			break;
+		case 'LT':
+			bbanformat = "16n";
+			break;
+		case 'LU':
+			bbanformat = "3n13c";
+			break;
+		case 'MK':
+			bbanformat = "3n10c2n";
+			break;
+		case 'MT':
+			bbanformat = "4a5n18c";
+			break;
+		case 'MR':
+			bbanformat = "23n";
+			break;
+		case 'MU':
+			bbanformat = "4a19n3a";
+			break;
+		case 'MC':
+			bbanformat = "10n11c2n";
+			break;
+		case 'MD':
+			bbanformat = "2c18n";
+			break;
+		case 'ME':
+			bbanformat = "18n";
+			break;
+		case 'NL':
+			bbanformat = "4a10n";
+			break;
+		case 'NO':
+			bbanformat = "11n";
+			break;
+		case 'PK':
+			bbanformat = "4c16n";
+			break;
+		case 'PS':
+			bbanformat = "4c21n";
+			break;
+		case 'PL':
+			bbanformat = "24n";
+			break;
+		case 'PT':
+			bbanformat = "21n";
+			break;
+		case 'RO':
+			bbanformat = "4a16c";
+			break;
+		case 'SM':
+			bbanformat = "1a10n12c";
+			break;
+		case 'SA':
+			bbanformat = "2n18c";
+			break;
+		case 'RS':
+			bbanformat = "18n";
+			break;
+		case 'SK':
+			bbanformat = "20n";
+			break;
+		case 'SI':
+			bbanformat = "15n";
+			break;
+		case 'ES':
+			bbanformat = "20n";
+			break;
+		case 'SE':
+			bbanformat = "20n";
+			break;
+		case 'CH':
+			bbanformat = "5n12c";
+			break;
+		case 'TN':
+			bbanformat = "20n";
+			break;
+		case 'TR':
+			bbanformat = "5n17c";
+			break;
+		case 'AE':
+			bbanformat = "3n16n";
+			break;
+		case 'GB':
+			bbanformat = "4a14n";
+			break;
+		case 'VG':
+			bbanformat = "4c16n";
+			break;
+	}
+	if (bbanformat === "") {
+		return false; // unknown country: MAYBE WE SHOULD ALLOW THIS???
+	}
+	
+	// check the country specific format
+	while (bbanformat.length>1) {
+		var count = 0;
+		var type = "?";
+		var l = 0;
+		if (/^\d[acn]/.test(bbanformat)) {
+			l = 1;
+		} else { 
+			l = 2;
+		}
+		
+		count = bbanformat.substring(0, l);
+		type = bbanformat.substring(l, l + 1);
+		bbanformat = bbanformat.substring(l + 1, bbanformat.length);
+		if (count === 0) {
+			break; // this indicates illegal bbanformat string: MAYBE HANDLE???
+		}
+		var typeexpression = '';
+		switch (type) {
+		case 'a': // alphabet letter
+			typeexpression = '[A-Z]';
+			break;
+		case 'c': // character (digit or letter)
+			typeexpression = '[\\dA-Z]';
+			break;
+		case 'n': // number (digit actually)
+			typeexpression = '\\d';
+			break;
+		}
+		bbanpattern = bbanpattern + typeexpression + "{" + count + "}";
+	}
+	var ibanregexp = new RegExp("^[A-Z]{2}\\d{2}" + bbanpattern + "$", "");
+	if (!(ibanregexp.test(iban))) {
+		return false; // invalid country specific format
+	}
+	
+	// now check the checksum, first convert to digits
+	var ibancheck = iban.substring(4,iban.length) + iban.substring(0,4);
+	var ibancheckdigits = "";
+	var leadingZeroes = true;
+	for (var i =0; i<ibancheck.length; i++) {
+		var char = ibancheck.charAt(i);
+		if (char !== "0") {
+			leadingZeroes = false;
+		}
+		if (!leadingZeroes) {
+			ibancheckdigits += "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ".indexOf(char);
+		}
+	}
+
+	// calculate the result of: ibancheckdigits % 97
+    var cRest = '';
+    var cOperator = '';
+	for (var p=0; p<ibancheckdigits.length; p++) {
+		var cChar = ibancheckdigits.charAt(p);
+		cOperator = '' + cRest + '' + cChar;
+		cRest = cOperator % 97;
+    }
+	return cRest === 1;
+}, "Please specify a valid IBAN");
 
 jQuery.validator.addMethod("time", function(value, element) {
 	return this.optional(element) || /^([01]\d|2[0-3])(:[0-5]\d){1,2}$/.test(value);
diff --git a/localization/messages_nl.js b/localization/messages_nl.js
index dd16be28f..d1eb9845a 100644
--- a/localization/messages_nl.js
+++ b/localization/messages_nl.js
@@ -20,6 +20,16 @@
 		rangelength: $.validator.format("Vul hier een waarde in van minimaal {0} en maximaal {1} tekens."),
 		range: $.validator.format("Vul hier een waarde in van minimaal {0} en maximaal {1}."),
 		max: $.validator.format("Vul hier een waarde in kleiner dan of gelijk aan {0}."),
-		min: $.validator.format("Vul hier een waarde in groter dan of gelijk aan {0}.")
+		min: $.validator.format("Vul hier een waarde in groter dan of gelijk aan {0}."),
+		
+		// for validations in additional-methods.js
+		dateNL: "Vul hier een geldige datum in.",
+		phoneNL: "Vul hier een geldig Nederlands telefoonnummer in.",
+		mobileNL: "Vul hier een geldig Nederlands mobiel telefoonnummer in.",
+		postalcodeNL: "Vul hier een geldige postcode in.",
+		bankaccountNL: "Vul hier een geldig bankrekeningnummer in.",
+		giroaccountNL: "Vul hier een geldig gironummer in.",
+		bankorgiroaccountNL: "Vul hier een geldig bank- of gironummer in.",
+		iban: "Vul hier een geldig IBAN in."
 	});
 }(jQuery));
\ No newline at end of file
diff --git a/test/methods.js b/test/methods.js
index 36ddde727..8c97cb87a 100644
--- a/test/methods.js
+++ b/test/methods.js
@@ -590,6 +590,155 @@ test("dateNL", function() {
 	ok(!method( "01.01.190" ), "Invalid date NL" );
 });
 
+test("phoneNL", function() {
+	var method = methodTest("phoneNL");
+	ok( method( "0701234567"), "Valid phone NL");
+	ok( method( "0687654321"), "Valid phone NL");
+	ok( method( "020-1234567"), "Valid phone NL");
+	ok( method( "020 - 12 34 567"), "Valid phone NL");
+	ok( method( "010-2345678"), "Valid phone NL");
+	ok( method( "+3120-1234567"), "Valid phone NL");
+	ok( method( "+31(0)10-2345678"), "Valid phone NL");
+	ok(!method( "020-123456"), "Invalid phone NL: too short");
+	ok(!method( "020-12345678"), "Invalid phone NL: too long");
+	ok(!method( "-0201234567"), "Invalid phone NL");
+	ok(!method( "+310201234567"), "Invalid phone NL: no 0 after +31 allowed");
+});
+
+test("mobileNL", function() {
+	var method = methodTest("mobileNL");
+	ok( method( "0612345678"), "Valid NL Mobile Number");
+	ok( method( "06-12345678"), "Valid NL Mobile Number");
+	ok( method( "06-12 345 678"), "Valid NL Mobile Number");
+	ok( method( "+316-12345678"), "Valid NL Mobile Number");
+	ok( method( "+31(0)6-12345678"), "Valid NL Mobile Number");
+	ok(!method( "abcdefghij"), "Invalid NL Mobile Number: text");
+	ok(!method( "0123456789"), "Invalid NL Mobile Number: should start with 06");
+	ok(!method( "0823456789"), "Invalid NL Mobile Number: should start with 06");
+	ok(!method( "06-1234567"), "Invalid NL Mobile Number: too short");
+	ok(!method( "06-123456789"), "Invalid NL Mobile Number: too long");
+	ok(!method( "-0612345678"), "Invalid NL Mobile Number");
+	ok(!method( "+310612345678"), "Invalid NL Mobile Number: no 0 after +31 allowed");
+});
+
+test("postalcodeNL", function() {
+	var method = methodTest("postalcodeNL");
+	ok( method( "1234AB"), "Valid NL Postal Code");
+	ok( method( "1234ab"), "Valid NL Postal Code");
+	ok( method( "1234 AB"), "Valid NL Postal Code");
+	ok( method( "6789YZ"), "Valid NL Postal Code");
+	ok(!method( "123AA"), "Invalid NL Postal Code: not enough digits");
+	ok(!method( "12345ZZ"), "Invalid NL Postal Code: too many digits");
+	ok(!method( "1234  AA"), "Invalid NL Postal Code: too many spaces");
+	ok(!method( "AA1234"), "Invalid NL Postal Code");
+	ok(!method( "1234-AA"), "Invalid NL Postal Code");
+});
+
+test("bankaccountNL", function() {
+	var method = methodTest("bankaccountNL");
+	ok( method( "755490975"), "Valid NL bank account");
+	ok( method( "75 54 90 975"), "Valid NL bank account");
+	ok( method( "123456789"), "Valid NL bank account");
+	ok( method( "12 34 56 789"), "Valid NL bank account");
+	ok(!method( "12 3456789"), "Valid NL bank account: inconsistent spaces");
+	ok(!method( "123 45 67 89"), "Valid NL bank account: incorrect spaces");
+	ok(!method( "755490971"), "Invalid NL bank account");
+	ok(!method( "755490973"), "Invalid NL bank account");
+	ok(!method( "755490979"), "Invalid NL bank account");
+	ok(!method( "123456781"), "Invalid NL bank account");
+	ok(!method( "123456784"), "Invalid NL bank account");
+	ok(!method( "123456788"), "Invalid NL bank account");
+});
+
+test("giroaccountNL", function() {
+	var method = methodTest("giroaccountNL");
+	ok( method( "123"), "Valid NL giro  account");
+	ok( method( "1234567"), "Valid NL giro account");
+	ok(!method( "123456788"), "Invalid NL giro account");
+});
+
+test("bankorgiroaccountNL", function() {
+	var method = methodTest("bankorgiroaccountNL");
+	ok( method( "123"), "Valid NL giro account");
+	ok( method( "1234567"), "Valid NL giro account");
+	ok( method( "123456789"), "Valid NL bank account");
+	ok(!method( "12345678"), "Invalid NL bank or giro account");
+	ok(!method( "123456788"), "Invalid NL bank or giro account");
+});
+
+test("iban", function() {
+	var method = methodTest("iban");
+	ok( method( "NL20INGB0001234567"), "Valid IBAN");
+	ok( method( "DE68 2105 0170 0012 3456 78"), "Valid IBAN");
+	ok( method( "NL20 INGB0001234567"), "Valid IBAN: invalid spacing");
+	ok( method( "NL20 INGB 00 0123 4567"), "Valid IBAN: invalid spacing");
+	
+	ok(!method( "NL20INGB000123456"), "Invalid IBAN: too short");
+	ok(!method( "NL20INGB00012345678"), "Invalid IBAN: too long");
+	ok(!method( "NL20INGB0001234566"), "Invalid IBAN: checksum incorrect");
+	ok(!method( "DE68 2105 0170 0012 3456 7"), "Invalid IBAN: too short");
+	ok(!method( "DE68 2105 0170 0012 3456 789"), "Invalid IBAN: too long");
+	ok(!method( "DE68 2105 0170 0012 3456 79"), "Invalid IBAN: checksum incorrect");
+
+	// sample IBANs for different countries
+	ok( method( "AL47 2121 1009 0000 0002 3569 8741"), "Valid IBAN - AL");
+	ok( method( "AD12 0001 2030 2003 5910 0100"), "Valid IBAN - AD");
+	ok( method( "AT61 1904 3002 3457 3201"), "Valid IBAN - AT");
+	ok( method( "AZ21 NABZ 0000 0000 1370 1000 1944"), "Valid IBAN - AZ");
+	ok( method( "BH67 BMAG 0000 1299 1234 56"), "Valid IBAN - BH");
+	ok( method( "BE62 5100 0754 7061"), "Valid IBAN - BE");
+	ok( method( "BA39 1290 0794 0102 8494"), "Valid IBAN - BA");
+	ok( method( "BG80 BNBG 9661 1020 3456 78"), "Valid IBAN - BG");
+	ok( method( "HR12 1001 0051 8630 0016 0"), "Valid IBAN - HR");
+	ok( method( "CH93 0076 2011 6238 5295 7"), "Valid IBAN - CH");
+	ok( method( "CY17 0020 0128 0000 0012 0052 7600"), "Valid IBAN - CY");
+	ok( method( "CZ65 0800 0000 1920 0014 5399"), "Valid IBAN - CZ");
+	ok( method( "DK50 0040 0440 1162 43"), "Valid IBAN - DK");
+	ok( method( "EE38 2200 2210 2014 5685"), "Valid IBAN - EE");
+	ok( method( "FO97 5432 0388 8999 44"), "Valid IBAN - FO");
+	ok( method( "FI21 1234 5600 0007 85"), "Valid IBAN - FI");
+	ok( method( "FR14 2004 1010 0505 0001 3M02 606"), "Valid IBAN - FR");
+	ok( method( "GE29 NB00 0000 0101 9049 17"), "Valid IBAN - GE");
+	ok( method( "DE89 3704 0044 0532 0130 00"), "Valid IBAN - DE");
+	ok( method( "GI75 NWBK 0000 0000 7099 453"), "Valid IBAN - GI");
+	ok( method( "GR16 0110 1250 0000 0001 2300 695"), "Valid IBAN - GR");
+	ok( method( "GL56 0444 9876 5432 10"), "Valid IBAN - GL");
+	ok( method( "HU42 1177 3016 1111 1018 0000 0000"), "Valid IBAN - HU");
+	ok( method( "IS14 0159 2600 7654 5510 7303 39"), "Valid IBAN - IS");
+	ok( method( "IE29 AIBK 9311 5212 3456 78"), "Valid IBAN - IE");
+	ok( method( "IL62 0108 0000 0009 9999 999"), "Valid IBAN - IL");
+	ok( method( "IT40 S054 2811 1010 0000 0123 456"), "Valid IBAN - IT");
+	ok( method( "LV80 BANK 0000 4351 9500 1"), "Valid IBAN - LV");
+	ok( method( "LB62 0999 0000 0001 0019 0122 9114"), "Valid IBAN - LB");
+	ok( method( "LI21 0881 0000 2324 013A A"), "Valid IBAN - LI");
+	ok( method( "LT12 1000 0111 0100 1000"), "Valid IBAN - LT");
+	ok( method( "LU28 0019 4006 4475 0000"), "Valid IBAN - LU");
+	ok( method( "MK07 2501 2000 0058 984"), "Valid IBAN - MK");
+	ok( method( "MT84 MALT 0110 0001 2345 MTLC AST0 01S"), "Valid IBAN - MT");
+	ok( method( "MU17 BOMM 0101 1010 3030 0200 000M UR"), "Valid IBAN - MU");
+	ok( method( "MD24 AG00 0225 1000 1310 4168"), "Valid IBAN - MD");
+	ok( method( "MC93 2005 2222 1001 1223 3M44 555"), "Valid IBAN - MC");
+	ok( method( "ME25 5050 0001 2345 6789 51"), "Valid IBAN - ME");
+	ok( method( "NL39 RABO 0300 0652 64"), "Valid IBAN - NL");
+	ok( method( "NO93 8601 1117 947"), "Valid IBAN - NO");
+	ok( method( "PK36 SCBL 0000 0011 2345 6702"), "Valid IBAN - PK");
+	ok( method( "PL60 1020 1026 0000 0422 7020 1111"), "Valid IBAN - PL");
+	ok( method( "PT50 0002 0123 1234 5678 9015 4"), "Valid IBAN - PT");
+	ok( method( "RO49 AAAA 1B31 0075 9384 0000"), "Valid IBAN - RO");
+	ok( method( "SM86 U032 2509 8000 0000 0270 100"), "Valid IBAN - SM");
+	ok( method( "SA03 8000 0000 6080 1016 7519"), "Valid IBAN - SA");
+	ok( method( "RS35 2600 0560 1001 6113 79"), "Valid IBAN - RS");
+	ok( method( "SK31 1200 0000 1987 4263 7541"), "Valid IBAN - SK");
+	ok( method( "SI56 1910 0000 0123 438"), "Valid IBAN - SI");
+	ok( method( "ES80 2310 0001 1800 0001 2345"), "Valid IBAN - ES");
+	ok( method( "SE35 5000 0000 0549 1000 0003"), "Valid IBAN - SE");
+	ok( method( "CH93 0076 2011 6238 5295 7"), "Valid IBAN - CH");
+	ok( method( "TN59 1000 6035 1835 9847 8831"), "Valid IBAN - TN");
+	ok( method( "TR33 0006 1005 1978 6457 8413 26"), "Valid IBAN - TR");
+	ok( method( "AE07 0331 2345 6789 0123 456"), "Valid IBAN - AE");
+	ok( method( "GB29 NWBK 6016 1331 9268 19"), "Valid IBAN - GB");
+});
+
 test("time", function() {
 	var method = methodTest("time");
 	ok( method("00:00"), "Valid time, lower bound" );