Resources

Fifteen questions about MICR, Check 21, and fraud

These are the questions we are asked most often, grouped by the part of the process they belong to. Every answer is written to be useful on its own, including to someone who buys from somebody else.

Where a standard or a statute decides the answer, it is named, so you can take it to your bank rather than take our word for it.

A person at a desk working through a question, one hand resting on a printed reference document and the other on a mouse, looking at a monitor
MICR and printing checks

Printing an item a reader/sorter will accept

What the magnetic line is for, who writes the rules, and what the printer and the paper have to do to stay inside them.

Is MICR toner or ink still required to print a valid check?

Yes. The Federal Reserve modified Regulation CC, but the requirement itself is unchanged. Checks and substitute checks, also called image replacement documents or IRDs, are legally required to include a magnetic code line in order to be treated as a cash item for processing in the United States payment system.

What is MICR and how is it used?

MICR stands for magnetic ink character recognition, and it describes the characters along the bottom of a check. They are standardized fonts printed with ink or toner that contains magnetic material.

As checks move through processing, reader/sorter machines identify the magnetic toner and recognize each character by its magnetic strength, which translates into fields. All check fields must use MICR toner for efficient processing. Standard toner causes rejection, and fines to the issuer.

Who sets MICR standards?

The American Bankers Association (ABA) and the American National Standards Institute (ANSI) establish MICR specifications, and the Accredited Standards Committee (ASC) X9 Financial Services reviews them periodically. We hold membership on the ASC X9B Committee on Paper Payment Systems.

What are the advantages of a MICR printer over pre-printed checks?

Printing onto blank stock removes the expense, the inefficiency and the risk of purchasing, storing, distributing and tracking pre-printed check stock. Blank stock does not become obsolete when an address, an account number or a logo changes.

One stock also handles varied MICR applications such as loan coupons, depository transfers and starter checks, without a separate pre-printed form for each one.

What is the difference between a MICR printer and a printer with drop-in MICR toner?

A standard printer running a MICR cartridge is a risk, given how rigid MICR specifications are and the fees that follow non-compliance.

A printer built for the application is engineered around it: certified E-13B and CMC-7 fonts, a low toner warning with an automatic stop, paper tray locks, and datastream encryption. Our MICR printers also include toner we formulate ourselves and a MICR Performance Guarantee against bank-imposed fees, when they are used with approved supplies and maintenance.

Does it matter what check stock I use?

Yes. ANSI X9.18, approved by the ABA, recommends 24 pound paper and specifies what the sheet has to do.

What the standard asks for

  • Sheffield smoothness between 120 and 150.
  • Moisture content of 4.5%.
  • Moisture-proof package wrapping.
  • No fan-fold cut-sheet paper.
  • No ferromagnetic material in the paper.
Check 21 and IRDs

What happens after the item is deposited

Image exchange, substitute checks, and the vocabulary a returns processing conversation runs on.

What is Check 21?

The Check Clearing for the 21st Century Act, enacted October 28, 2004. It encourages check truncation by replacing physical transport with digital imaging, which decreases processing time and transportation cost and reduces the risk of loss or destruction.

What is a substitute check?

Because of Check 21, banks can transfer digital check images to processors and to paying banks. If the paying bank cannot process the electronic version, it receives a substitute check, also called an image replacement document or IRD: a paper replacement created from the electronic image of an original paper check, and the legal equivalent of the original.

An IRD must carry all front and back information, including the MICR line and the endorsements, and it must state that it is a legal copy. Institutions may store or destroy the originals after electronic capture.

Why would a bank use IRDs?

They remove courier and transportation fees for sending a hard copy. Electronic transmission reduces float and speeds processing. They also let a bank serve merchant customers without a physical branch nearby.

What do the terms around Check 21 and IRDs mean?

These are the terms that come up in every returns processing conversation, in the order the items move.

The vocabulary

  • Cash letter: a document accompanying a bundle of checks that describes its contents, item count and dollar amounts.
  • Electronic cash letter (ECL): the same information plus check images and data, in X9.37 and X9.100-180 formats.
  • Bank of first deposit (BOFD): the depositing bank.
  • Intermediary: the Federal Reserve or a large bank processing checks.
  • Correspondent bank: a bank that provides check processing and IRD printing to other banks.
  • Payor bank: the bank the check is drawn on.
  • Forward items, or day one: checks moving to the payor bank.
  • Return items, or day two: checks returning to the bank of first deposit for insufficient funds or another reason.
Check fraud

Where the exposure is, and who carries it

How the attack works, why it grew, and the measures that reduce it inside your organization and at your bank.

How does check fraud concern my business?

Check fraud costs American companies billions of dollars each year, which raises bank costs and vendor prices, and it costs victims directly through losses and reputational damage. It affects businesses of every size.

Uniform Commercial Code reforms place responsibility for prevention on the issuer, requiring due diligence and security measures.

Why has check fraud increased?

The ABA attributes the increase to the availability of sophisticated, low-cost technology, including laser printers and desktop publishing software. Color copiers let criminals mass-produce counterfeits.

How does check fraud happen, and who is targeted?

Checks are copied, the amount and the payee are altered, and the item is then cashed with false identification. Organized groups create as many as 40 to 50 bogus checks from a single copy of one good check.

Corporate payroll and accounts payable are common targets. All business types and sizes are vulnerable.

How do I protect my company against check fraud?

The measures divide into what you control inside your own organization and what you arrange outside it. Neither half works on its own.

Inside your organization

  • Review bank statements regularly, and keep authorized signers separate from the people who reconcile the account.
  • Run background checks on staff who handle vendors, check issuance or reconciliation.
  • Assign at least two people to accounts payable.
  • Store check stock securely, and verify that boxes arrive unopened.
  • Change access keys and codes periodically.
  • Require vacations for staff with financial access.
  • Run surprise audits.
  • Understand your bank contract and your liability under the Uniform Commercial Code.

Outside it

  • Use bank services such as positive pay, expedited returns and signature verification.
  • Buy blank safety stock from an established vendor.
  • Reconcile disbursements and deposits regularly.
  • Close an account immediately if it is used fraudulently.
  • Do not use a refund account as a check source.
  • Store or destroy canceled checks properly.
  • Do not give account numbers to people you do not know.
  • Compare payroll checks against current employee records.
  • Verify transfers between accounts and to new vendors.
  • Review canceled checks and endorsements monthly.
What is the Uniform Commercial Code?

The UCC sets out responsibilities for banks and companies handling check fraud. It was updated in 1993 and adopted by all 50 states, and that update moved responsibility for prevention from banks alone to businesses and corporations, requiring shared safeguards.

Read further

The long version of five of these answers

What is MICR?

The long form of the second question on this page: the fonts, the read head, and what makes a printer MICR capable.

Read it

If your question is not here, call us. We answer MICR questions for people who are not customers, because the alternative is a bank fee somebody pays for no reason.

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