Using the same billing address for separate Bing Ads accounts is generally allowed as long as each account represents a distinct and legitimate business or individual.
Each Bing Ads account should represent a unique business or individual entity. If both accounts are legitimate and separate entities with distinct business activities, there should be no issue with using the same billing address.
make sure to provide accurate and truthful information for each account. Using your own documents and payment method for your account should not pose a problem if the information is legitimate.
Transparency and communication can help avoid misunderstandings.
Using your own payment method for your account and another person's for their account is acceptable.
To prevent any suspicion of deceptive practices, make sure that the two accounts are genuinely separate and not created for the purpose of circumventing policies or restrictions.