I recently got married, i earn €77k and my wife earns €50k, would there be any benefit to us in being jointly assessed for tax purposes? As it stands we're being assesses as when we were single.
I don't think so, you are both paying tax at the higher rate so there are no unused credits to go to the other partner to reduce the tax bill.
I may be wrong. There are examples on revenue.ie that should help you work it out.