Banks will have to give at least three months' notice to business customers on whether loans will be extended and not be able to unilaterally default on borrowers who have met their repayments.The report of the Australian Small Business and Family Enterprise Ombudsman into loans' practices will be released today. It's previewed in The Financial Review.ASBFEO also calls for a strengthening of the banks' own plan to improve standards and an extension of the Code of Banking Practice to protect business borrowers. Carnell recommends that banks must provide borrowers with decisions on rolling over loans of less than $5 million 90 business days before maturity - and longer for rural properties and complex businesses.If a bank changes a restriction clause or covenant, it will need to give borrowers at least 30 days' notice. And if a small business has complied with repayments and acted lawfully, "the bank must not default a loan for any reason," Kate Carneell, the ASBFEO, says.