ERCs allow you to offset your payroll taxes and receive cash back for credits above your payroll tax liability. This credits serve as a refund. Example: If you qualify for $50,000 in credits and only owe $8,000 in payroll taxes, you receive a $42,000 refund.
Previously, the tax credit was equal to 50% of wages and compensation, up to $10,000 in wages for the year (2020). With the ERC updates, it made Q1-Q2 2021 equal to 70% of wages and compensation, up to $10,000 in wages for each quarter. This equals a max potential credit of $14,000 per qualified employee for Q1-Q2 2021 in addition to the 2020 credits. No limits exist on how you can spend your refund.