A credit controller requires a combination of skills and qualifications to be successful. Essential skills include numeracy and accuracy, communication and negotiation, organization and time management, as well as computer and software skills. These enable the credit controller to work with numbers, invoices, accounts, customers, deadlines, and software applications. Qualifications desired for a credit controller include a high school diploma or equivalent, preferably with a good level of math and English. A certificate or diploma in accounting, finance, or business administration is also beneficial. Additionally, a membership or certification from a professional body such as the Institute of Credit Management or the Credit Services Association is desirable.