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catonthecouchproductionsFlag for United States of America

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IRS Number

I have been trying to get a regex to validate for IRS # and also the alternative format where it has the "-AA" at the end for subsets of a company.

Any ideas?

Thx
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numberkruncher
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IRS REGEX FROM: http://regexlib.com/UserPatterns.aspx?authorid=fd2705c4-5998-4154-9d4e-a5996cdcebe1

^([07][1-7]|1[0-6]|2[0-7]|[35][0-9]|[468][0-8]|9[0-589])-?\d{7}$

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Adding two optional characters at end:

^([07][1-7]|1[0-6]|2[0-7]|[35][0-9]|[468][0-8]|9[0-589])-?\d{7}(-[A-Za-z]{2})$

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numberkruncher
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Perfect!