With the e-Self-Employment Invoice (e-SEI)solution developed in accordance with the standards set by the Revenue Administration, self-employed entrepreneurs are experiencing the convenience of digital in their jobs. Within the scope of e-SEI, e-Self-Employment Invoice can be issued, stored, submitted and reported electronically in accordance with the standards set by the Revenue Administration (GİB). Thus, these entrepreneurs can facilitate both the invoice preparation and submission processes and control their costs. Thus, these entrepreneurs can facilitate both the invoice preparation and submission processes and control their costs.