A guarantor is a person or a company who will co-sign on your lease in case you do not qualify to rent an apartment in New York on your own. Your guarantor will fill out an application and provide similar documents to a landlord as you, including photo ID and recent bank statements.The standard NYC guarantor income requirement is that their salary is at least 80 100 times the rent. That's someone who guarantees payment on the lease if you can't come up with the cash. A guarantor is a co-signer who guarantees payment on the lease if it otherwise can't be made. But this is an entirely additional process. Fill out the lease guaranty application online and send us your paperwork. Each Rent Guarantor must complete a Rent Guarantor Application, sign a Guarantor Acknowledgement, and sign and have notarized a Guaranty of Lease Agreement. Almost all landlords in New York City will require a principal or principal's of the corporation or LLC to guarantee the lease. If you and your roommate can both sign the lease, the 40x rent usually applies to total income, so you each need to make 80,000, not 160,000.