Manufacturers using 340B Pay will pay discounts twice per month to applicable covered entities. Kalderos generates invoices for each manufacturer on the 1st and 16th of each month, and the manufacturer has half of the month (13-16 days, depending on the month) to complete its review and authorize payment. The ACH payment, facilitated by our third party payment partner, Dwolla, may take up to four days to process, depending on the covered entity’s bank.