"Today, Estonia is regarded as one of the most advanced e-governments in the world. The use of technology and digital services is widespread in both the public and private sector. We can set up a new company and have it legally up and running within 20 minutes. Nearly 95 percent of Estonians declare their income online, because it takes less than five minutes and no accountants. All this brings tax administration costs down to only 0.3 percent of net tax revenues, and saves each citizen an average of 5.4 workdays a year."
From a World Bank post on how Estonia got there.