Legal Analysis: None. Because the income certificate issued by the company only proves the employee's income, it is only used as a credential to the lender to make the lender believe that the lender has the ability to repay the loan. This is just a kind of proof, and it should not have any guarantee responsibility with the company, because the company has not issued a guarantee certificate, it is just proof of the employee's financial resources.

Legal basis: Paragraph 2 of Article 280 of the "Criminal Law of the People's Republic of China" Who forges the seal of a company, enterprise, institution, or people's organization shall be sentenced to fixed-term imprisonment of not more than three years, Criminal detention, surveillance or deprivation of political rights, and a fine.

Article 52 of the "Public Security Management Punishment Law" who commits any of the following acts shall be detained for not less than 10 days but not more than 15 days, and may also be fined not more than 1,000 yuan; if the circumstances are minor, Detention for not less than five days but not more than ten days may be punished by a fine of not more than five hundred yuan: (1) Anyone who forges, alters, or buys or sells official documents, certificates, certification documents, or seals of state agencies, people's organizations, enterprises, institutions, or other organizations... ….