The best way to get an instant approval for a high-risk merchant account is to be ready with all the documents a payment service provider may need. Here is the list of pre-required documents:
Complete details of business
Website or App of your business
Contact Information, such as email, phone number, and address
Details of business owner
Address proof of owner and business
Documents of business partnership
Last three months' business bank statement
Furthermore, keep your track record clean and maintain your business bank account. Plus, choose a merchant service provider such as WebPays that has the infrastructure and the facility to provide instant approval for a high-risk merchant account.