> I am not sure what the rationale for marriage affecting taxes in the US was originally, but it doesn't make much sense to me.
I assume it’s because at the time the tax brackets which penalized dual high income earning households were decided, they weren’t politically powerful (or numerous) enough to push back on them. Nowadays, dual high income earning households are more common and they had the ability to get the brackets changed.
https://www.fool.com/taxes/2018/11/15/the-irs-marriage-penal...
As far as I know at least.
> I am not sure what the rationale for marriage affecting taxes in the US was originally, but it doesn't make much sense to me.
I assume it’s because at the time the tax brackets which penalized dual high income earning households were decided, they weren’t politically powerful (or numerous) enough to push back on them. Nowadays, dual high income earning households are more common and they had the ability to get the brackets changed.