Why do these individual tax cuts expire in the law? Republicans
say they expect a future Congress will extend those cuts, rather than allowing taxes for many to increase. But in order to pass their tax bill through budget reconciliation, a process requiring only a majority vote in the Senate, Republican lawmakers could not add more than $1.5 trillion to the deficit over 10 years. Nor could they have a bill that added to the deficit beyond that 10-year window.
The Committee for a Responsible Federal Budget calls the expiring cuts “gimmicks.” It
notes that “the ‘easy’ options” for Republicans to make the final bill meet those requirements were to have some of the tax cuts expire — and that’s what GOP lawmakers did. While the final bill costs an estimated
$1.46 trillion over 10 years, CRFB
says the actual cost could end up being $2.2 trillion, when these sunsetting tax cuts are actually extended.