Remember that the verification process costs $3, so it's usually done when you request your first withdrawal, not before.
If you only completed the verification process but haven't yet requested a withdrawal, your information will be kept on file.
After completing the tax interview your information will be on file and your account will ready to accept payments. (During this time your Validation Status may be shown as pending, but you can still start collecting payments)
Before your account is eligible to receive earnings through a payout, your tax information must be validated. Validation will take place after you open your first payout request.