Businesses are paying their invoices at the fastest rate on record, Dun & Bradstreet reports.According to D&B's latest Trade Payments Analysis, the average invoice payment time fell from 50.4 days in the March quarter to 49.2 days in the June quarter.In the June quarter last year businesses were taking 53.2 days to pay their invoices.Payment days were at their slowest in 2008, when businesses took an average of 57 days to pay their invoices.Sixty-eight per cent of invoices were paid within 30 days in the June quarter, while 21 per cent were paid within 31 to 60 days, five per cent within 61 to 90 days, two per cent within 91 to 120 days and three per cent beyond 120 days.Over the 12 months to June the proportion of invoices paid within 31 to 60 days fell from 40 per cent to 21 per cent.Business in Tasmania were the fastest payers (at an average of 42.1 days), while those in New South Wales were the slowest (51.4 days).Among industries, the finance and insurance sector was a laggard, paying in an average of 53 days.