Morrison tells NXT don't squib budget duty

Treasurer Scott Morrison is in Adelaide to talk to businesses while urging South Australian senator Nick Xenophon to back the government's company tax cuts.

Scott Morrison has told Senate powerbroker Nick Xenophon and his team not to "squib" their responsibility to back tax cuts for businesses in their South Australian state and support measures to repair the federal budget.

"When the Labor Party is going to vote against improving the budget ... (the Xenophon team) sit in the box seat here and they can't squib it," Mr Morrison told 5AA Adelaide radio on Wednesday.

The treasurer is holding a business roundtable in Adelaide on Wednesday about the government's plan to give tax cuts to firms that have an annual turnover of up to $50 million as part of its 10-year company tax plan.