Rule §230.506(c)(2)(ii)
Verification of Accredited Investor Status
https://www.govinfo.gov/content/pkg/CFR-2014-title17-vol3/ pdf/CFR-2014-title17-vol3-sec230-506.pdf


The issuer shall take reasonable steps to verify that purchasers of securities sold in any offering under paragraph (c) of this section are accredited investors. The issuer shall be deemed to take reasonable steps to verify if the issuer uses, at its option, one of the following non-exclusive and non-mandatory methods of verifying that a natural person who purchases securities in such offering is an accredited investor; provided, however, that the issuer does not have knowledge that such person is not an accredited investor:

(A) In regard to whether the purchaser is an accredited investor on the basis of income, reviewing any Internal Revenue Service form that reports the purchaser's income for the two most recent years (including, but not limited to, Form W-2, Form 1099, Schedule K-1 to Form 1065, and Form 1040) and obtaining a written representation from the purchaser that he or she has a reasonable expectation of reaching the income level necessary to qualify as an accredited investor during the current year;
(B) In regard to whether the purchaser is an accredited investor on the basis of net worth, reviewing one or more of the following types of documentation dated within the prior three months and obtaining a written representation from the purchaser that all liabilities necessary to make a determination of net worth have been disclosed:
(1) With respect to assets: Bank statements, brokerage statements and other statements of securities holdings, certificates of deposit, tax assessments, and appraisal reports issued by independent third parties; and
(2) With respect to liabilities: A consumer report from at least one of the nationwide consumer reporting agencies; or
(C) Obtaining a written confirmation from one of the following persons or entities that such person or entity has taken reasonable steps to verify that the purchaser is an accredited investor within the prior three months and has determined that such purchaser is an accredited investor:
(1) A registered broker-dealer;
(2) An investment adviser registered with the Securities and Exchange Commission;
(3) A licensed attorney who is in good standing under the laws of the jurisdictions in which he or she is admitted to practice law; or
(4) A certified public accountant who is duly registered and in good standing under the laws of the place of his or her residence or principal office.
(D) In regard to any person who purchased securities in an issuer's Rule 506(b) offering as an accredited investor prior to September 23, 2013 and continues to hold such securities, for the same issuer's Rule 506(c) offering, obtaining a certification by such person at the time of sale that he or she qualifies as an accredited investor.
(E) In regard to any person that the issuer previously took reasonable steps to verify as an accredited investor in accordance with this paragraph (c)(2)(ii), so long as the issuer is not aware of information to the contrary, obtaining a written representation from such person at the time of sale that he or she qualifies as an accredited investor. A written representation under this method of verification will satisfy the issuer's obligation to verify the person's accredited investor status for a period of five years from the date the person was previously verified as an accredited investor.

Instructions to paragraph (c)(2)(ii)(A) through (D) of this section:
1). The issuer is not required to use any of these methods in verifying the accredited investor status of natural persons who are purchasers. These methods are examples of the types of non-exclusive and non-mandatory methods that satisfy the verification requirement in §230.506(c)(2)(ii).
2). In the case of a person who qualifies as an accredited investor based on joint income with that person's spouse, the issuer would be deemed to satisfy the verification requirement in §230.506(c)(2)(ii)(A) by reviewing copies of Internal Revenue Service forms that report income for the two most recent years in regard to, and obtaining written representations from, both the person and the spouse.
3). In the case of a person who qualifies as an accredited investor based on joint net worth with that person's spouse, the issuer would be deemed to satisfy the verification requirement in §230.506(c)(2)(ii)(B) by reviewing such documentation in regard to, and obtaining written representations from, both the person and the spouse.