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ExternalProxyAccountType1Code

COTX Code: Corporate Tax Identification

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COTX means corporate tax identification in the ISO 20022 proxy account type code set. Unique government-issued tax Identification used as account proxy to identify the corporate (for example for government tax) and typically linked to the corporate bank account (applied for corporate account proxy).

Code
COTX
ISO name
CorporateTaxIdentification
Status
Registered
Last updated
2022-03-04

Official definition

Unique government-issued tax Identification used as account proxy to identify the corporate (for example for government tax) and typically linked to the corporate bank account (applied for corporate account proxy).

Definition from the ISO 20022 External Code Sets, 2Q2026 (published 28 Aug 2026).

Messages and fields that use ExternalProxyAccountType1Code

MessageElement path
pacs.002TxInfAndSts/OrgnlTxRef/DbtrAcct/Prxy/Tp/Cd, TxInfAndSts/OrgnlTxRef/CdtrAcct/Prxy/Tp/Cd, TxInfAndSts/OrgnlTxRef/DbtrAgtAcct/Prxy/Tp/Cd, TxInfAndSts/OrgnlTxRef/CdtrAgtAcct/Prxy/Tp/Cd
pain.002OrgnlPmtInfAndSts/TxInfAndSts/OrgnlTxRef/DbtrAcct/Prxy/Tp/Cd, OrgnlPmtInfAndSts/TxInfAndSts/OrgnlTxRef/CdtrAcct/Prxy/Tp/Cd, OrgnlPmtInfAndSts/TxInfAndSts/OrgnlTxRef/DbtrAgtAcct/Prxy/Tp/Cd, OrgnlPmtInfAndSts/TxInfAndSts/OrgnlTxRef/CdtrAgtAcct/Prxy/Tp/Cd
pacs.004TxInf/RtrChain/DbtrAcct/Prxy/Tp/Cd, TxInf/RtrChain/CdtrAcct/Prxy/Tp/Cd, GrpHdr/SttlmInf/SttlmAcct/Prxy/Tp/Cd, TxInf/OrgnlTxRef/DbtrAcct/Prxy/Tp/Cd
camt.056Undrlyg/TxInf/OrgnlTxRef/DbtrAcct/Prxy/Tp/Cd, Undrlyg/TxInf/OrgnlTxRef/CdtrAcct/Prxy/Tp/Cd, Undrlyg/TxInf/OrgnlTxRef/DbtrAgtAcct/Prxy/Tp/Cd, Undrlyg/TxInf/OrgnlTxRef/CdtrAgtAcct/Prxy/Tp/Cd
camt.029ModDtls/OrgnlTxRef/DbtrAcct/Prxy/Tp/Cd, ModDtls/OrgnlTxRef/CdtrAcct/Prxy/Tp/Cd, ModDtls/OrgnlTxRef/DbtrAgtAcct/Prxy/Tp/Cd, ModDtls/OrgnlTxRef/CdtrAgtAcct/Prxy/Tp/Cd
pacs.008CdtTrfTxInf/DbtrAcct/Prxy/Tp/Cd, CdtTrfTxInf/CdtrAcct/Prxy/Tp/Cd, CdtTrfTxInf/DbtrAgtAcct/Prxy/Tp/Cd, CdtTrfTxInf/CdtrAgtAcct/Prxy/Tp/Cd
pacs.009CdtTrfTxInf/DbtrAcct/Prxy/Tp/Cd, CdtTrfTxInf/CdtrAcct/Prxy/Tp/Cd, CdtTrfTxInf/DbtrAgtAcct/Prxy/Tp/Cd, CdtTrfTxInf/CdtrAgtAcct/Prxy/Tp/Cd
pain.001PmtInf/DbtrAcct/Prxy/Tp/Cd, PmtInf/ChrgsAcct/Prxy/Tp/Cd, PmtInf/DbtrAgtAcct/Prxy/Tp/Cd, PmtInf/CdtTrfTxInf/CdtrAcct/Prxy/Tp/Cd

And 116 more messages: see the ExternalProxyAccountType1Code page.

COTX questions

What does COTX mean in ISO 20022?
COTX is Corporate Tax Identification in the ExternalProxyAccountType1Code code set: Unique government-issued tax Identification used as account proxy to identify the corporate (for example for government tax) and typically linked to the corporate bank account (applied for corporate account proxy).
Where does COTX appear in a message?
For example in camt.056, element Undrlyg/TxInf/OrgnlTxRef/DbtrAcct/Prxy/Tp/Cd.

All ExternalProxyAccountType1Code codes · ISO 20022 code sets

The ISO 20022 code names and definitions on this page are reproduced from material published at iso20022.org under the ISO 20022 Intellectual Property Rights policy. This is not the official source: the up-to-date ISO 20022 standards and repository material are published only at iso20022.org. Explanations in our own words are by ZagTrader. ZagTrader is not affiliated with or endorsed by ISO or Swift.