Taxpayers' ombudsman Sherra Profit says her office has received ongoing complaints about difficulty proving or maintaining eligibility for the Canada Child Benefit despite repeatedly raising the issues with the government and the Canada Revenue Agency

The Liberals introduced the income-tested Canada Child Benefit midway through 2016, replacing a previous system of tax credits and the Conservatives' universal child care benefit.

The wait is over as the much-touted "new and improved" Canada Child Benefit launches Wednesday. Here's what you need to know.