Usually there are costs involved with the security transfer which vary between 50 and 100 CHF per security.
So it also depends on how many securities you own and how much you pay for administration.
With Swissquote you have 0.1%/year custody fees (with 60 CHF/year minimum and 200 CHF/year maximum) and security transfer is 50 CHF each (http://www.moneyland.ch/en/swissquote-bank/online-trading/online-trading)
I am currently in the process of transferring VWRL:xswx from CornerTrader to IB, and my contact at CT told me the only costs would be 25.- if I chose to close the account. Will update here if anything unexpected happens.
At a swiss you’ll be asked to cough up 0.15% in stamp duty (less for CH equities but they’re expensive in other ways). At yearly turnover of say 100k you’re looking at 150 Fr, double for eventually selling and it’s 300 Fr. And that’s on top of normal brokerage fees which are outrageously expensive at most
If you switch to a UK bank/brokerage bringing your money outside Switzerland to avoid stamp duty, aren’t the swiss tax authorities going to be pissed at you and squeeze you like a lemon even more than usual? (I spent the last year fighting with their ‘taxation decision’).