How much is interstate unemployment in Massachusetts?
It depends on how much is owed by the "liable state" where the worker had his employment. Massachusetts is not responsible, as the "agent state", but will assist the unemployed worker receive his benefits from the liable state.
If you live in Massachusetts and your employer is in Texas what state do you file unemployment with?
If you live in Massachusetts but work in New Hampshire where do you claim for unemployment benefits?
The "liable state", where you work is New Hampshire. It is the one who collected unemployment taxes from your employer and is the one to pay your benefits, therefore file with NH. With the interstate unemployment benefits system, you may be able to file with Massachusetts's, but they would work with the liable state.
Interstate unemployment is merely the agreement between the "liable state" ( the one owing the benefits because the worker worked in that state) and the "agent state" where the worker is now. The agent state, apparently Texas in this case, will assist the unemployed worker receive his benefits from the other state.