# content
@codinghorror@infosec.exchange @simoncropp@hachyderm.io @kurdiumov@hachyderm.io Isn't there basically no mathematical difference between ​GMI and UBI if you have a means based income tax system (which nearly everywhere does)? It seems like as long as you're calculating both things at the same time, you'd end up with the same answers. The only "bad" option would seem to be assessing income given and income taxed with two different systems which might be politically necessary in the short term, but is self-evidental more expensive to manage.

# source.content
[@codinghorror@infosec.exchange](https://infosec.exchange/users/codinghorror) [@simoncropp@hachyderm.io](https://hachyderm.io/users/simoncropp) [@kurdiumov@hachyderm.io](https://hachyderm.io/users/kurdiumov) Isn't there basically no mathematical difference between ​GMI and UBI if you have a means based income tax system (which nearly everywhere does)? It seems like as long as you're calculating both things at the same time, you'd end up with the same answers. The only "bad" option would seem to be assessing income given and income taxed with two different systems which might be politically necessary in the short term, but is self-evidental more expensive to manage.