Apart from the reasons mentioned already this could also be a cashflow / working capital related issue. Larger companies in particular optimize their working ca

Apart from the reasons mentioned already this could also be a cashflow / working capital related issue. Larger companies in particular optimize their working capital - sometimes quite relentlessly so. This means that for accounts receivable the payment term is optimized to be as low as is reasonably possible while outgoing payments are delayed as much as possible, which results in a better cashflow.