Updated July 2026 · 8 min read

ICU Nurse Overtime: What You Actually Take Home After Taxes

Part of the Nurse Money Hub — salaries, taxes, and nurse income math in one map.

You're being offered a fourth 12-hour shift. Your base rate is $48/hour, so overtime pays $72/hour — that's $864 gross for a single shift. But what actually deposits in your bank account? Most ICU nurses estimate wrong, either overestimating because they forget taxes or underestimating because they confuse marginal rate with effective rate. Here is the exact math.

Step 1: Establish your base scenario

Let's work with a concrete example: an ICU nurse in Texas (no state income tax) earning $100,000/year in base salary. Hourly rate: approximately $48.08 on a 2,080-hour work year. Overtime rate: $72.12/hour. A full 12-hour overtime shift = $865 gross.

Step 2: Federal income tax on the extra shift

For a single filer at $100,000 annual income in 2026, the marginal federal bracket is 22% (the 22% bracket spans $47,151–$100,525 for single filers; the next dollar above $100,525 hits 24%). Our nurse at exactly $100,000 is near the bracket ceiling. The $865 overtime shifts some income into the 24% bracket, but let's use 22% for simplicity.

Federal income tax on $865: $865 × 22% = $190

Step 3: FICA taxes

Social Security (6.2%) applies to wages up to $176,100 in 2026. Medicare (1.45%) applies to all wages, plus an additional 0.9% on wages above $200,000. At $100,000 base + $865 OT, both apply at standard rates.

FICA on $865: $865 × 7.65% = $66

Step 4: The net calculation

So a 12-hour overtime shift in Texas yields approximately $609 net. That's a 70.4% retention rate — meaningfully better than the "they tax OT at 40%" myth that circulates in break rooms everywhere.

How state income tax changes the math

When overtime stops being worth it

Overtime is always positive after-tax — the math never makes it negative. But there are diminishing returns. Once your income crosses $191,950 (single filer, 32% bracket in 2026), each overtime dollar nets only 60 cents federal before state taxes. More importantly, the non-financial cost — fatigue, burnout risk, reduced recovery — is a real economic cost that doesn't show up in the paycheck. ICU nurses who routinely work 60+ hour weeks show measurably higher error rates and higher 3-year turnover, both of which have financial consequences. See our piece on the financial cost of ICU burnout for the full calculation.

Related: How to Max Your 403(b), Night Shift Differential Math, ICU Burnout Financial Cost