If you are being prompted to reverify or re-enter your tax ID information, you can do this in the Tax Details section of your Dashboard under Business Settings.
Login to your Stripe Dashboard Stripe Login | Sign in to the Stripe Dashboard as an Admin
Click on the Settings icon in the upper right
Go to the Tax Details section
Change your Legal name, if needed.
Click Edit next to the Employer Identification Number (EIN)
Type the new number
Click Update
If you have recently updated your US-based business information with the IRS within the last 3-4 weeks and Stripe is unable to match it against government records, see: New Tax ID Number for US Business Not Verifying.