June 28, 2021 The new Child Tax Credit Eligibility Assistant allows families to answer a series of questions to quickly determine whether they qualify for the advance credit. Here's what you'll need to use the tool Your 2020 tax return, or your 2019 tax return if you haven't filed for 2020. If you don't have a copy of the return, to determine your potential credit, you need your filing status and the number of qualifying children you claimed. You can estimate your income with the following: Income statements such as W-2s and 1099s Amount of any expenses or adjustments to your income This tool requests no personal information and it is not a registration tool. It helps you determine whether your family should take the next step and either file an income tax return or register using the Non-filer Sign-up Tool.