I have always thought of separate filing as something that filers should seriously consider for the final year of marriage or in circumstances where you think your spouse has significant audit exposure that you don’t want to share. The circumstances in which two married filing separate returns would yield a lower aggregate tax than a joint return were so rare that everyone I knew entirely discounted it. Things are different in 2021 (Also in 2020, but that is water under the bridge). What is driving the phenomenon are recovery rebate credits (which many received as economic income payments) and child tax credits.
Be sure and read this before sending those electronic returns before the 18th. You may just have some savings there. Click here to keep reading.