Depending on your mortgage interest rate, you may not be better off. We pay .7% and earn 1%, so about the same after the 35% taken off.

Once you pay off your mortgage you can't get that money back out without re-negotiating your mortgage and taking your earnings into account. Your financial situation may change, since you don't know what is around the corner when you need that money back - having kids, wife stops working or switches to part-time work or you become unemployed. I think we are better off not paying back our mortgage and saving the money instead.

In countries with a re-draw facility we paid extra and left a small mortgage.

BTW post finance is dropping their interest rates from 1% as of 1.3.2012. Time to move our money but to where?

Switching to Postfinance means you can get rid of your EC cards. Their Postcard works in CH like an EC That's another 80 CHF of benefits