It only applies to the amounts earned during marriage, and income on assets comingled after the marriage. If you live in a community property state, you will generally split it all 50/50.
The exception would be income
earned on assets or investments that were owned by a spouse prior to the marriage and not commingled. Also,
inherited income that was not commingled.
Also, when you file as Married Filing Separately, if one spouse
itemizes on Schedule A, the other must also itemize on Schedule A.
Married Filing
Separately in a Community Property State
https://ttlc.intuit.com/replies/3301943
Is it better for a married couple to file jointly or separately?
https://ttlc.intuit.com/replies/3288477
