What is Level 2 and Level 3 payment processing data?

Level 2 data adds purchase order numbers and tax amounts to B2B transactions. Level 3 adds full line-item details: product codes, quantities, and unit prices. Submitting Level 2/3 data on corporate card transactions can reduce interchange by 0.5-1.5%, since card issuers provide better expense reporting to cardholders. This saves thousands monthly for businesses with high B2B card volume.