First you'll need both an IG share trading account and a CFD account.
You can then link your CFD account to your share trading account from within the web-based platform.
- Log in to My IG
- 'Live accounts'
- 'Set up collateral’
Once linked, you can use a percentage of the value of your shareholdings as collateral to cover the margin on your CFDs. How much depends on the make-up of your portfolio.
Importantly, you can only use your shareholdings to cover the initial margin on your CFDs. Any running losses will need to be covered by the available cash in your margined account.