{"id":10216,"date":"2025-08-27T04:13:37","date_gmt":"2025-08-27T08:13:37","guid":{"rendered":"https:\/\/curiara.com\/?p=10216"},"modified":"2025-10-16T07:47:30","modified_gmt":"2025-10-16T11:47:30","slug":"what-is-the-aba-number","status":"publish","type":"post","link":"https:\/\/curiara.com\/en\/que-es-el-numero-aba\/","title":{"rendered":"What is the ABA number and how does it differ from the account number?"},"content":{"rendered":"<p>In the financial world of <strong>United States<\/strong>one of the most common, and at the same time most confusing, terms for many people is that of <strong>'what is the ABA number?', <\/strong>one of the most common and at the same time the most confusing question for many people...&nbsp;<\/p>\n\n\n\n<p>This code appears in <strong>checks<\/strong>, <strong>account statements<\/strong> and in the <strong>banking information<\/strong> requested for wire transfers or direct deposits.&nbsp;<\/p>\n\n\n\n<p>However, it is not always clear how it works, what exactly it is used for and how it differs from other numbers such as the account number, routing number or the <strong>SWIFT code<\/strong>.&nbsp;<\/p>\n\n\n\n<p>In this article, we will delve into all these aspects so that you have a complete and clear guide.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What is the ABA number?<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"533\" src=\"http:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/que-es-el-numero-aba-en-usa.jpg\" alt=\"what is the aba number in usa\" class=\"wp-image-10218\" srcset=\"https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/que-es-el-numero-aba-en-usa.jpg 800w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/que-es-el-numero-aba-en-usa-300x200.jpg 300w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/que-es-el-numero-aba-en-usa-768x512.jpg 768w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/que-es-el-numero-aba-en-usa-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>The<strong> ABA number<\/strong> is a numeric code of <strong>nine digits<\/strong> created in 1910 by the <a href=\"https:\/\/www.aba.com\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>American Bankers Association<\/strong> <\/a>(hence its name).<\/p>\n\n\n\n<p>Its main objective is to <strong>identify the financial institution in the United States<\/strong> that processes a <strong>bank transaction<\/strong>.&nbsp;<\/p>\n\n\n\n<p>Simply put, it is a <strong>identifier<\/strong> only one that allows the <strong>systems<\/strong> <strong>financial<\/strong> know precisely at which bank a payment should be received or processed.<\/p>\n\n\n\n<p>When someone wonders <strong>what is the ABA number<\/strong>is actually talking about a <strong>identification system<\/strong> designed to ensure that the <strong>domestic transfers <\/strong>reach the right destination, no matter how many banks there are in the country.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Its role in the banking system<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"533\" src=\"http:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/funcion-del-aba-en-el-banco.jpg\" alt=\"aba&#039;s role in the bank\" class=\"wp-image-10219\" title=\"aba&#039;s role in the bank\" srcset=\"https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/funcion-del-aba-en-el-banco.jpg 800w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/funcion-del-aba-en-el-banco-300x200.jpg 300w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/funcion-del-aba-en-el-banco-768x512.jpg 768w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/funcion-del-aba-en-el-banco-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>The raison d'\u00eatre of this issue is <strong>avoid mistakes<\/strong> in the routing of payments. In a country like <strong>United States<\/strong>In a country where there are thousands of banks and credit unions, it was essential to have a standard system that differentiated each institution.<\/p>\n\n\n\n<p>The main functions of the <strong>ABA number<\/strong> include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Process domestic wire transfers (ACH and Wire):<\/strong> every time money is sent between accounts in different countries. <a href=\"https:\/\/baicapital.com\/espanol\/blog\/los-mejores-bancos-de-estados-unidos-en-2025-guia-completa\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>banks in the U.S.<\/strong><\/a>the number <strong>ABA<\/strong> indicates to the system which institution should receive the payment order.<br><\/li>\n\n\n\n<li><strong>Direct deposits:<\/strong> when a company deposits payroll for its employees, the number of <strong>ABA<\/strong> ensures that the funds go to the correct bank.<br><\/li>\n\n\n\n<li><strong>Automatic payment of invoices:<\/strong> if you configure a <strong>automatic debit<\/strong> from your account to pay for services such as <strong>electricity or internet,<\/strong> your bank will use the <strong>ABA number <\/strong>to identify the <strong>receiving institution.<\/strong><br><\/li>\n\n\n\n<li><strong>Validation of transactions:<\/strong> serves as a filter to confirm that the transaction is performed within the <strong>U.S. banking system.<\/strong><br><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p>Understand <strong>what is the ABA number<\/strong> without this code, the companies would not have been able to <strong>banks<\/strong> would not be able to safely process the large quantity of <strong>electronic transactions<\/strong> that occur on a daily basis in <strong>USA. USA.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Difference with account number<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"533\" src=\"http:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/numero-de-cuenta-y-numero-aba.jpg\" alt=\"account number and aba number\" class=\"wp-image-10220\" title=\"account number and aba number\" srcset=\"https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/numero-de-cuenta-y-numero-aba.jpg 800w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/numero-de-cuenta-y-numero-aba-300x200.jpg 300w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/numero-de-cuenta-y-numero-aba-768x512.jpg 768w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/numero-de-cuenta-y-numero-aba-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>One of the most common mistakes is to think that the <strong>ABA number<\/strong> is the same as the account number. In reality, they are completely different:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>ABA number:<\/strong> identifies the bank itself.<\/li>\n\n\n\n<li><strong>Account number:<\/strong> identifies your personal or business account within that bank.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p>For example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <strong>ABA number<\/strong> would be like the address of the <strong>bank's head office.<\/strong><\/li>\n\n\n\n<li>The <strong>account number<\/strong> would be like the <strong>apartment number within a building.<\/strong><br><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p>Both are required to complete a transaction. If someone only has your <strong>account number<\/strong>but not the <strong>ABA<\/strong>shall not <strong>send money<\/strong> correctly because the system will not know to which bank to direct the operation.<\/p>\n\n\n\n<p>In this way, understanding <strong>what is the ABA number<\/strong> and how it differs from the account number is key to avoid confusion when receiving payments or setting up transfers.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>ABA number, routing number and SWIFT number:<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"533\" src=\"http:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/numero-aba-swift-.jpg\" alt=\"aba swift number\" class=\"wp-image-10221\" title=\"aba swift number\" srcset=\"https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/numero-aba-swift-.jpg 800w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/numero-aba-swift--300x200.jpg 300w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/numero-aba-swift--768x512.jpg 768w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/numero-aba-swift--18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>Another point of confusion arises because the <strong>ABA number<\/strong> sometimes called <strong>\"Routing Number<\/strong>. In fact, in practice, they are the same.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>ABA or Routing Number:<\/strong> is the nine-digit code used within the United States for domestic transfers.<br><\/li>\n\n\n\n<li><a href=\"https:\/\/www.bbva.es\/finanzas-vistazo\/ef\/cuentas\/codigo-swift-bic.html\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>SWIFT or BIC number<\/strong><\/a><strong>:<\/strong> is the international code that identifies <strong>banks globally.<\/strong> It is used in <strong>international transfers<\/strong> and usually consists of between<strong> 8 and 11 alphanumeric characters.<\/strong><br><\/li>\n<\/ul>\n\n\n\n<p>In conclusion:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If you are sending money within<strong> United States<\/strong>: you need the<strong> ABA number.<\/strong><\/li>\n\n\n\n<li>If you are sending money to or from another country: you will need the<strong> SWIFT number.<\/strong><strong><br><\/strong><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p>This explains why understanding <strong>what is the ABA number<\/strong> is essential to distinguish it from the <strong>SWIFT<\/strong>especially if you receive payments from both <strong>national and international.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>How to identify it on a check?<\/strong><\/h2>\n\n\n\n<p>If you have ever had a <strong>U.S. check<\/strong> in your hands, you have probably seen a series of numbers printed on the bottom. There, the <strong>ABA number<\/strong> see <strong>at the far left, at the beginning of the digit line<\/strong>just before the account number.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <strong>first nine digits<\/strong> correspond to the <strong>ABA number.<\/strong><\/li>\n\n\n\n<li>Then, the account number appears.<\/li>\n\n\n\n<li>Finally, the check number is included.<br><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p>In this way, any person can quickly identify which is the most important <strong>ABA<\/strong> of your bank.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Locate it in account statements:<\/strong><\/h2>\n\n\n\n<p>In addition to the <strong>checks<\/strong>it is also possible to find the <strong>ABA number<\/strong> in:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Printed or digital account statements:<\/strong> usually appears next to your account number and other relevant banking information.<br><\/li>\n\n\n\n<li><strong>Online banking portal or mobile application:<\/strong> many banks show it in the \"<strong>Transfer information\".<\/strong> o \"<strong>Wire\/ACH Instructions\".<\/strong><br><\/li>\n\n\n\n<li><strong>Bank customer service:<\/strong> In case of doubt, you can always apply directly to the <strong>financial institution.<\/strong><strong><br><\/strong><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p>Saber <strong>what is the ABA number<\/strong> and where to find it avoids delays in receiving funds or setting up an automatic deposit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What happens if I use the wrong one?<\/strong><\/h2>\n\n\n\n<p>The use of a <strong>ABA number <\/strong>The wrong one can cause the transfer:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Be delayed.<\/li>\n\n\n\n<li>Be returned to the sender.<\/li>\n\n\n\n<li>Or, in the worst case, it is sent to the wrong bank.<br><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p>For this reason, it is always advisable to <strong>verify what is the ABA number<\/strong> of your bank directly in<strong> official sources<\/strong> (online banking, checking or customer service).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Is it unique for each bank?<\/strong><\/h2>\n\n\n\n<p>In most cases, yes, but with nuances. Some large banks have <strong>more than one ABA number<\/strong>depending on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The state or region where the account was opened.<br><\/li>\n\n\n\n<li>If the transaction will be <strong>ACH<\/strong> (standard transfer) or <strong>Wire<\/strong> (fast electronic transfer).<br><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p>For example, a national bank may have one ABA number for California operations and a different one for New York operations.<\/p>\n\n\n\n<p>Therefore, before <strong>send or receive money<\/strong>If you have the correct ABA for your type of operation, it is vital to confirm which is the correct ABA for your type of operation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>A personal note from Venezuela<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"533\" src=\"http:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/venezolanos-en-usa.jpg\" alt=\"venezuelans in the usa\" class=\"wp-image-10222\" title=\"venezuelans in the usa\" srcset=\"https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/venezolanos-en-usa.jpg 800w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/venezolanos-en-usa-300x200.jpg 300w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/venezolanos-en-usa-768x512.jpg 768w, https:\/\/curiara.com\/wp-content\/uploads\/2025\/08\/venezolanos-en-usa-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>Like <strong>Venezuelans<\/strong>We know how important it is to understand these terms when living abroad or when we need to<strong> <\/strong><a href=\"https:\/\/curiara.com\/en\/europa\/que-es-una-remesa-por-que-importante-venezuela\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>send money to our families<\/strong><\/a><strong>.\u00a0<\/strong><\/p>\n\n\n\n<p>For us, every <strong>transfer<\/strong> represents more than a simple banking operation, it is a bridge of love, support and hope for those who are still in our country, our mothers in one of those<a href=\"https:\/\/curiara.com\/en\/europa\/mejores-playas-venezolanas\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong> beautiful beaches<\/strong><\/a>our grandmothers cooking...<\/p>\n\n\n\n<p>Knowing what is the <strong>ABA number<\/strong> and how to use it correctly not only <strong>avoids errors<\/strong>but also ensures that that effort, every sacrificial dollar sent, gets into the right hands. which is <\/p>\n\n\n\n<p>Because, in the end, beyond numbers and codes, what moves us is our heart and the desire to continue building a future inside and outside of our country. <strong>Venezuela<\/strong>.&nbsp;<\/p>\n\n\n\n<p>In services such as <strong><a href=\"https:\/\/curiara.com\/en\/\" target=\"_blank\" rel=\"noreferrer noopener\">Curiara<\/a><\/strong>where many <strong>Venezuelans<\/strong> <strong>we send remittances to our families<\/strong>the <strong>ABA number<\/strong> is an essential piece of information. Knowing it and using it correctly helps us to ensure that each shipment arrives smoothly. And even though we are far away, we still carry our Venezuela in our souls.<\/p>\n\n\n\n<p><strong>Curiara, uniting families.<\/strong><\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>En el mundo financiero de Estados Unidos, uno de los t\u00e9rminos m\u00e1s comunes, y a la vez m\u00e1s confusos para muchas personas, es el de \u2018\u00bfqu\u00e9 es el n\u00famero ABA?\u2019, una pregunta de las m\u00e1s comunes y a la vez m\u00e1s confusas para muchas personas\u2026&nbsp; Este c\u00f3digo aparece en cheques, estados de cuenta y en [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":10906,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"class_list":["post-10216","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tramites"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00bfQu\u00e9 es el n\u00famero ABA y en qu\u00e9 se diferencia del SWIFT?<\/title>\n<meta name=\"description\" content=\"Descubre qu\u00e9 es el n\u00famero ABA, para qu\u00e9 sirve, d\u00f3nde encontrarlo y en qu\u00e9 se diferencia del n\u00famero de cuenta y del c\u00f3digo SWIFT en EE. 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