It’s “ask BOI” because authorities can be arbitrary. On the face of it, income is income. Your tax return is one way of showing incoming but so are brokerage statements. So they likely would accept those but again - it’s up to them.
true but we were able to reuse the notarised passport from my original O A and the birth certificate did not need any certification. The front desk asked for it so we asked for the officer we spoke to yesterday. Meh came out and told the front desk to stop wasting people’s time - all this had been done already to get th O A visa and there was no point in asking for it again. Including the translation of the birth certificate-not needed. That officer is a hero. A shining light of common sense