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Is there a standard check format in the USA?
Many years ago, I worked on software that had to print the date, payee, and amounts on pre-printed checks.  Other than the MICR line (which had a particular placement with respect to the bottom edge and required a particular font in a particular point size), most aspects of the check layout and format were up to the particular check provider. Then there was a desire to start using optical character recognition to further automate check handling.  A standard came out, that most checks I see now seem to follow.  The standard dictated the exact dollar sign glyph to be printed to the left of the amount box.  This glyph was used by the OCR to locate the amount.  There were specific tolerances for where you could print/write the amount relative to that dollar sign.  There were also some requirements for the box containing the amount to have some clearance from the noisy backgrounds pre-printed on many checks.  But what font you used inside the amount box was, as far as I could tell, unspecified.  After all, customers could always hand-write the amount. Interestingly, the part of the check where you spell out the amount is known as the "legal amount."  If the amount in numerals and the amount in words don't match, the spelled version takes precedence, legally.  (The theory being that it's easier to doctor the numerals to change the apparent value of the check than it is to change the words.)  I always found it ironic that the layout standard to enable OCR standard was focused on reading the numerals rather than the legal amount.  OCR has come a long way since then, so I wouldn't be surprised if, nowadays, both amounts are read, even on hand-written checks. A little search shows that current (voluntary) standards are put out by the ANSI X9 group.