- Routing transit number
A routing transit number (RTN), or routing number, is a nine digit
bank code, used in the United States, which appears on the bottom of negotiable instruments such as checks that identifies which financial institution it is drawn upon. This code is also used by the Automated Clearing Houseto process direct deposits and other automated transfers. The routing number is derived from the bank's transit number originated by the American Bankers Association, which designed it in 1910.
ABA number management
Since 1911, the American Bankers Association has assigned transit numbers through a series of registrars, currently
Accuity. [ [http://www.accuitysolutions.com/co-press-release.html?id=20080114QK8G3EH8 Accuity also registers SWIFT codes] ] The company is responsible for assigning new ABA numbers. Accuity publishes the ABA Number Directory in the "American Bankers Association Key to Routing Numbers" semi-annually.
There are approximately 28,000 active routing and transit numbers currently in use. Every financial institution in the United States has at least one of these.
The ABA transit number generally appears in the upper right part of a check near the date. It looks like a fraction, with a numerator and a denominator. The denominator is identical to the first four digits of the routing number. The numerator consists of two parts. The prefix is a one to three digit code indicating the region where the bank is located. The numbers 1 to 49 are cities. They were assigned by size of the cities in 1910. The numbers 50 to 99 are states. They were assigned in a rough spatial geographic order. They are used for banks located outside one of the 49 numbered cities. There might be a fourth element to the ABA number, a branch number, at either the end of the transit number or to the right of it.
Routing number format
The routing number consists of 9 digits:: XXXXYYYYCwhere XXXX is Federal Reserve Routing Symbol, YYYY is ABA Institution Identifier, and C is the Check Digit
The symbol that typically prefixes routing transit numbers has a Unicode value of U+2446 and looks like this: ⑆
If your computer cannot display this character, it may be seen [http://decodeunicode.org/w3.php?nodeId=9388&page=1&lang=2&zoom=&prop=1 here] .
Number Format and Standards
The first two digits of the nine digit ABA number must be in the ranges 00 through 12, 21 through 32, 61 through 72, or 80.
The digits are assigned as follows:
* 00 is used by the
United States Government
* 01 through 12 are the "normal" routing numbers
* 21 through 32 were assigned only to
thrift institutions (e.g. credit unions and savings banks) through 1985; currently are still used by the thrift institutions, or their successors
* 61 through 72 are used for electronic transactions
* 80 is used for
The first two digits correspond to the 12
Federal Reserve Banks as follows: Primary Thrift Electronic Federal Reserve Bank 01 21 61 Boston 02 22 62 New York 03 23 63 Philadelphia 04 24 64 Cleveland 05 25 65 Richmond 06 26 66 Atlanta 07 27 67 Chicago 08 28 68 St. Louis 09 29 69 Minneapolis 10 30 70 Kansas City 11 31 71 Dallas 12 32 72 San Francisco
The number must pass a
checksumtest using a position-weighted sum of each of the digits.
* The following condition must hold: . (Mod or modulo is the remainder of a division operation.)
As an example, consider 111000025 (which is a valid routing number of
Bank of Americain Texas). Applying the formula, we get:.
The following formula can be used to generate the 9th digit in the checksum:
Following the above example for the Texas Bank of America routing number 111000025,
Canadian transit number
Canadian transit numbers are regulated by the Canadian Payments Association. A number has the following form:: XXXXX-YYYwhere XXXXX is a Branch Number, and YYY is an Institution Number. The dash between the branch number and the institution number is an integral part of the transit number. This format is only valid for paper-type transactions such as cheques. For Electronic Fund Transactions (EFT) the current format is a leading zero, the institution number, then the branch number all with no dashes. For example if a check reads XXXXX-YYY , the corresponding EFT code would be 0YYYXXXXX.
As a general rule,
Bankinstitution numbers start with 0, 2, 3, or 6, Credit Union and Caisse Populaire institution numbers start with 8, and Trust Companyinstitution numbers with 5.
Bank of Montreal
The Bank of Nova Scotia
Royal Bank of Canada
* XXXXX-004 The
Toronto-Dominion Bank(which is the legal name for the bank, although it operates as TD Canada Trust)
National Bank of Canada
Canadian Imperial Bank of Commerce(includes President's Choice Financial)
Laurentian Bank of Canada
Bank of Canada(Canadian central bank)
Canada Post(money orders)
Bank of China(Canada)
President's Choice Financial(no longer assigned)
Canadian Tire Bank
Canada Trust(prior to the merger of TD & Canada Trust)
* XXXXX-540 Manulife Bank
ING Direct Canada
Credit UnionCentral of British Columbia
* XXXXX-815 Caisses Desjardins du Québec
* XXXXX-819 Caisses populaires Desjardins du Manitoba
Credit UnionCentral of Ontario
* XXXXX-829 Caisses populaires Desjardins de l'Ontario
Meridian Credit Union(formerly Hepco)
Credit UnionHeritage (Nova Scotia)
* XXXXX-865 Caisses populaires Desjardins acadiennes
Alberta credit unions
In a Canadian bank transit number, the last digit of the branch number, with few exceptions, indicates the geographical location of the branch.
Branch numbers ending with:
* 0 are located in
* 1 are located in Western
Québecincluding Montrealand surrounding area
* 2 are located in
Ontarioincluding Torontoand surrounding area
* 3 are located in
Nova Scotia, Prince Edward Islandand Newfoundland excluding Labrador
* 4 are located in
* 5 are located in Eastern
* 6 are located in
Eastern Ontarioincluding Ottawaand surrounding area
* 7 are located in
Manitobaand North-Western Ontario
* 8 are located in
* 9 are located in
Albertaand the Northwest Territories
For example, the number 58876-004 indicates that the associated account is held at an Eastern Ontario branch of The Toronto-Dominion Bank (58876 is the branch number, and 004 is the institution number).
Please see http://www.cdnpay.ca/rules/pdfs_rules/rule_d4.pdf for a listing of current and historical financial institution ID numbers.
International Bank Account Number
ISO 9362, the SWIFT/BIC code standard
Canada has similar but different transaction routing structures
Large Value Transfer System(Canada)
* [http://www.accuitysolutions.com/text/aba_policy.pdf Official ABA Routing Number Policy] (
* [http://www.federalreserve.gov/otherfrb.htm Federal Reserve Districts]
* [http://www.fedwiredirectory.frb.org/search.cfm Find banks' ABA numbers or which bank owns a given ABA number]
* [http://www.abachecker.com Bank to ABA number mapping, with expanded bank named] - e.g. "United Missouri Bank" instead of "UMB" as returned (and required when searching) by the FedWireDirectory
* [http://www.aba.com/Products/PS98_Routing.htm American Bankers Association page on ABA routing numbers]
* [http://www.routingnumbers.org Bank Routing Numbers Search] - a comprehensive routing information search engine.
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