The employees who will be affected — in a single division of the IRS — are expected to be notified Thursday that they've been fired.

The Corporate Transparency Act, passed by Congress in 2021 and signed by former President Joe Biden, requires all business with less than $5 million in annual revenues and fewer than 20 employees to submit a detailed accounting of anyone who has interest or influence in their companies, whether or not they have a legal ownership stake.

The move by the Trump administration will shrink the agency’s workforce by about 6%. In the past few years, Congress has awarded the IRS billions of dollars. Experts worry this could undermine taxpayer compliance.

The firing of 6,000 employees at the Internal Revenue Service will mean frustrating wait times for those seeking call center help, tax preparers say.

The IRS has begun laying off more than 6,000 new and newly promoted employees across the country as part of the push to slash the federal government, sources say.