The Welllington, New Zealand-based company said in a statement that its appointment of Liddell as chair is effective from today, with former chair Sam Knowles resigning as both chair and director. US-based Bill Veghte, who runs HP's enterprise group, has also been appointed to the Xero board.
Meanwhile the firm also announced Peter Karpas has been appointed chief executive, North America effective from 24 February, having recently been PayPal's general manager, North America for small and medium business. He also has previously held a senor role at Intuit, an American financial software company.
"As you would expect from a fast expanding software company, our strategy is to increase US representation on our board," chief executive Rod Drury said in a statement.
"These three high calibre appointments are all significant additions to our American-based leadership team and position us strongly in the US and globally."