Calls on contributories allow the Tribunal to require payments to satisfy company debts and winding up costs. The Tribunal may, after a winding up order, make calls on all or any contributories to the extent of their liability to satisfy the company's debts, liabilities and winding up costs, and may order payment of such calls; this power may be exercised before or after ascertaining asset sufficiency and the Tribunal may consider the probability of contributories failing to pay when making calls.