Substitute checks in the United States (Ofer Abarbanel online library)

A substitute check (also called an Image Replacement Document or IRD)[1] is a negotiable instrument used to represent the digital reproduction of an original paper check. In the United States, as a negotiable payment instrument, a substitute check maintains the status of a “legal check” in lieu of the original paper check as authorized by the Check Clearing for the 21st Century Act (also known as the Check 21 Act). Instead of presenting the original paper checks, financial institutions and payment processing centers electronically transmit data from a substitute check by either the settlement process through the United States Federal Reserve System[2] or by clearing the deposit based on a private agreement between member financial institutions of a clearinghouse that operates under the Uniform Commercial Code (UCC).[3]

Substitute checks are recognized as legal checks as long as the instruments meet specific requirements. These requirements include the faithful reproduction of the paper check and warranty of the instrument by the “reconverting bank”—the financial institution that created the substitute check or the first financial institution that transferred or presented it during the check clearing process.[4] Substitute checks are also subject to the UCC, existing federal and state check laws, and regulations specific to consumer rights that affect the acceptance of these instruments.[5] Although a substitute check is subject to the UCC and existing state and federal check laws, the Check 21 Act takes precedence over these other laws and regulations for this instrument.[6]

Specifications and standards

The Accredited Standards Committee X9 (ASC X9), a standards development committee accredited by the American National Standards Institute (ANSI), maintains, promotes, and supports technical financial standards for procedures, delivery, and transactions for financial products and services that include Image Replacement Documents, and other financial instruments.[7] American National Standard (ANS) X9.100-140 covers specifications for the content, processing, and quality of Image Replacement Documents specifically.[8]

Certain standards that exist for paper checks also apply to Image Replacement Documents. These standards include ANS X9.100-160-2 (Magnetic Ink Printing (MICR) Part 2 External Processing Code (EPC) Field Use), ANS X9.100-181 (Specifications for TIFF Image Format for Image Exchange), ANS X9.100-187 (Specifications for Electronic Exchange of Check and Image Data – Domestic), and Draft Standard for Trial Use (DSTU) X9.37 (Electronic Exchange of Check and Image Data).[8][9]

Eligible payment items for truncation and reconversion

Under the Check 21 Act, all U.S. paper checks and check-like instruments are eligible for truncation and reconversion to substitute checks, including consumer (personal) checks, commercial (business) checks, money orders, traveler’s checks, cash advance or convenience checks tied to credit and charge card accounts, controlled disbursement checks, and payable through drafts, in addition to government warrants and U.S. Treasury checks.[10][11][12] The Check 21 Act permits any financial institution (such as a commercial bank or credit union) that participates in the check collection process to remove or truncate the original paper check from the forward collection or return process and reconvert the paper check to a substitute check without first requiring an existing agreement between the bank of first deposit (BOFD) and the “paying bank.”[5][10]

The elimination of the paper checks from the clearing process saves the banking and treasury management industries handling, sorting, transporting, storing, safeguarding, and mailing costs. After the financial institution truncates the original paper check and reconverts it to a substitute check, the financial institution can store or archive the paper check, return the paper check to its own customer according to state law, or later destroy the paper check.

Legal requirements

A properly prepared substitute check is considered the legal equivalent of the original paper check that can be accepted for payment or proof of payment in the same manner as the original check. Every substitute check must adhere to the following requirements before it can be recognized as the legal equivalent of the original check:

  1. The substitute check must accurately represent all information depicted on the front and back of the original paper check at the time the financial institution truncates that check, including the names of the payor and payee, courtesy and legal amounts, endorsements, and encoding information, among other details.
  2. The substitute check must accurately represent the MICR line of the original check.
  3. The substitute check must bear the legend “This is a LEGAL COPY of your check. You can use it the same way you would use the original check.”
  4. The financial institution or processor must provide a warranty for the substitute check. This warranty must be provided by the financial institution when it removes or truncates the original paper check from the forward collection or return process and reconverts the paper check to a substitute check.
  5. The financial institution or processor that truncated the original check must follow ASC X9.100-140 standards in the capture of check images and MICR data when it produces the substitute check.[2]

Image statements that include a series of pictures or images of original paper checks and/or substitute checks, photocopies of the original checks, and images of checks posted online are not recognized as the legal equivalents of substitute checks.[13] Unlike a substitute check, a photocopy of a check cannot be presented through the check clearing process for settlement because the photocopy of the check does not adhere strictly to the requirements for substitute checks under the Check 21 Act.[5]

Since substitute checks are considered legal checks, substitute checks are subject to existing check laws and regulations. Other laws and regulations that govern substitute checks in the United States include the Expedited Funds Availability Act, Article 3 (Negotiable Instruments),[14] and Article 4 (Bank Deposits and Collections)[15] of the Uniform Commercial Code (UCC), along with a variety of state and federal regulatory laws. U.S. federal laws that also affect substitute checks include Federal Reserve regulations that provide for recrediting the amount of the substitute check in the case of fraud and duplicate payments caused by settlement of both the substitute check and the original check used for creating the substitute check.[2][5][10] If any state law, federal law, or provision of the UCC conflicts with the Check 21 Act, the Check 21 Act takes precedence to the extent of the inconsistencies among those laws and provisions.[6]

Clearing process

Forward collection process

Each substitute check processed for forward collection is encoded with a “4” as the External Processing Code (EPC) in position 44 of the MICR line as required under ANS X9.90.[16] An example of the forward collection process for substitute checks involves the following steps for financial institutions that process deposits through the Federal Reserve System:[2]

  1. The payee endorses the original paper check and presents it to the depository financial institution.
  2. The depository financial institution (Bank 1 – referred to as the bank of first deposit or BOFD) stamps its endorsement on the rear of the original check.
  3. Bank 1 captures an image of the front and back of the original check and the MICR line data from the front of the check. Bank 1 then removes or truncates the original check from the clearing process and uses the check image, MICR data, its own electronic endorsement, and the electronic endorsements to create a substitute check.
  4. Bank 1 electronically transmits the check image and the MICR line data captured from the original check to the paying bank (Bank 2) for settlement. If no agreement exists between Bank 1 and Bank 2 to exchange check images and data, Bank 1 must provide either the original check or the legal equivalent of the substitute check to Bank 2.
  5. As the paying bank, Bank 2 uses check image and MICR data or information from the substitute check received from Bank 1 to process the item during the normal course of settlement.
  6. After the settlement process, Bank 2 provides a copy of the substitute check to the customer who wrote the original check or includes information about the substitute check in that customer’s monthly or periodic statement.

Any financial institution that participates in the forward collection (or return) process can become the reconverting financial institution if it creates the substitute check for transmittal and settlement.

Return process for dishonored checks

If a substitute check must be returned unpaid because of insufficient funds (a dishonored or bounced check), the paying bank (Bank 2) stamps the item NSF (non-sufficient funds) as the reason for the return. In this case, Bank 2 encodes a “5” as the EPC on the MICR line to identify the substitute check according to ANS X9.90,[16] along with the routing number of the depository financial institution and the dollar amount of the substitute check. Bank 2 encodes this information on a return strip, perforated strip, or carrier document that the financial institution attaches to the unpaid substitute check.[16] The paying bank then returns the unpaid substitute check through the routing process to the BOFD (Bank 1) for further handling. Once Bank 1 receives the returned substitute check, the financial institution issues a charge back notice to its customer who deposited or offered the check for settlement.[2]


  1. ^“Frequently Asked Questions: 10. What is the difference between an Image Replacement Document (IRD) and a substitute check?”. Federal Financial Institutions Examination Council. Retrieved May 2, 2011.
  2. ^ Jump up to:ab c d e “Check Clearing for the 21st Century Act Foundation for Check 21 Compliance Training”. Federal Financial Institutions Examination Council. Retrieved May 28, 2009.
  3. ^“The Electronic Check Clearing House Organization (ECCHO): Rules Summary”(PDF). Electronic Check Clearing House Organization. December 2013. p. 2. Retrieved April 12, 2014.
  4. ^About Check Clearing for the 21st Century Act. (March 1, 2006). U.S. Federal Reserve Board. Retrieved January 16, 2007.
  5. ^ Jump up to:ab c d “Consumer Guide to Check 21 and Substitute Checks”. U.S. Federal Reserve Board. February 16, 2004. Retrieved May 28, 2009.
  6. ^ Jump up to:ab Substitute checks. 12 C.F.R. § 229.59 (2009). Retrieved October 4, 2009.
  7. ^“Facts about Accredited Standards Committee X9 – Financial Industry Global Standards” (PDF). The Accredited Standards Committee X9, Inc. Retrieved 18 April2015.
  8. ^ Jump up to:ab “Substitute checks: Development of processing and quality standards” (PDF). ECCHO® (Electronic Check Clearing House Organization). Retrieved 17 April 2015.
  9. ^“Federal Reserve Adoption of DSTU X9.37-2003: Image Cash Letter Customer Documentation” (PDF). United States Federal Reserve Bank. October 1, 2008. Retrieved 18 April 2015.
  10. ^ Jump up to:abc “The Check Clearing for the 21st Century Act (“Check 21″): Frequently Asked Questions” (PDF). U.S. Department of Justice. October 28, 2004. Retrieved May 30,2009.
  11. ^“Frequently Asked Questions: Consumer Compliance FAQ for Check Clearing for the 21st Century Act (Check 21) and the Implementing Regulation (12 CFR 229)”. Federal Financial Institutions Examination Council. Retrieved 17 April 2015.
  12. ^“Check 21 Resource Document” (PDF). NACHA. March 2004. Retrieved 17 April 2015.
  13. ^“Check 21: Q’s and A’s”. U.S. Comptroller of the Currency. Retrieved May 30, 2009.
  14. ^Negotiable instrument. 3 U.C.C. § 104 (2009). Retrieved October 11, 2009.
  15. ^Electronic presentment. 4 U.C.C. § 110 (2009). Retrieved October 11, 2009.
  16. ^ Jump up to:abc “Check 21 Resource Document”. Electronic Check Clearing House Organization. 2009. Retrieved May 28, 2009.

Ofer Abarbanel online library

Ofer Abarbanel online library

Ofer Abarbanel online library