The Earned Income Tax Credit (EITC) has a hidden and dangerously perverse element to it

Deductibility of IRA contributions have a phase out at around $60K to $70K filing single if you are covered by an employer sponsored 401k plan.

Eligibility for a ROTH IRA phases out at $114K filing single.

In the past, you could get hit with AMT if you were over a certain amount as well, which then applied to all of your income.

Certain education credits have a phaseout as well.

These aren’t quite the same as the EITC that actually provides a disincentive - but it’s not always true that tax on increased income only applies to the marginal amounts above the bracket. That increased income can boost your AGI leading to more phaseouts.