If i do Re-file/reassess my income from 2021, will I be able to download Express NOA straight away from Turbox Tax or no ?

Usually a reassessment takes 2 weeks, and in your case it might affect 2022 tax return as well. You will not receive an Express NOA after ReFiling. ReFile is done using CRA My Account services:  ReFILE: Online adjustments for income tax and benefit returns

NOTE: Yesterday CRA's NetFile was down, no one could file.  If this happens, try again later.

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