Overtime pay sounds straightforward — work more than 40 hours, get paid more. But the rules vary by state, the tax treatment is widely misunderstood, and not all employees qualify for overtime at all. This guide explains the FLSA framework, key state variations, how overtime income is actually taxed, and how to calculate what you really take home.

The FLSA Overtime Standard

The Fair Labor Standards Act requires covered employers to pay non-exempt employees at least 1.5 times their regular rate of pay for all hours worked beyond 40 in a single workweek. A "workweek" is any fixed, regularly recurring 168-hour period — it does not have to align with the calendar week. Employers cannot average hours across multiple weeks to avoid overtime; each workweek stands alone.

The regular rate of pay is not just your hourly wage. It must include non-discretionary bonuses (production bonuses, attendance bonuses) and shift differentials. These additions are divided by total hours worked in the period and added to your base rate before overtime is computed. This can meaningfully increase your effective overtime rate — and your paycheck.

FLSA also defines "white-collar" exemptions for executive, administrative, professional, and outside sales employees who meet both a duties test and a minimum salary threshold of $684 per week ($35,568/year) in 2025. Meeting only the salary floor without passing the duties test does not qualify an employer to classify you as exempt. Many employees are incorrectly classified; the Department of Labor provides a free self-check tool if you have concerns.

State Law Can Exceed Federal Minimums

Several states have overtime laws that are more generous than the FLSA baseline. California is the most notable: it mandates 1.5× for hours over 8 in a single day (not just 40 in a week) and 2× double time for hours over 12 in a day, or any hours worked on the 7th consecutive workday over 8 hours. Colorado requires overtime after 10 hours in a day. Alaska and Nevada have daily overtime provisions as well.

When state and federal law conflict, the law most favorable to the employee applies. For California workers, this typically means daily overtime triggers long before the weekly 40-hour threshold is reached — a hospital nurse working three 12-hour shifts triggers California daily OT on every shift, even if total weekly hours stay under 40.

State laws also differ on mandatory rest periods, split-shift premiums, and the rules for the 7th consecutive day. If you work in multiple states or work remotely for an employer based elsewhere, consult your state's labor department to confirm which rules apply to your specific situation.

The Overtime Tax Myth, Debunked

One of the most persistent payroll misconceptions is that overtime is taxed at 50% or at some special punitive rate. This is completely false. Overtime is ordinary income, taxed at the same marginal federal and state rates as any other earned wages. The confusion arises because overtime pushes your total income higher, sometimes into a higher tax bracket — but only the income above each bracket threshold is taxed at the higher rate, not your entire paycheck.

For example, if you're firmly in the 22% federal bracket and overtime pushes $800 of income into the 24% bracket, only that $800 is taxed at 24%. The remaining overtime income is still taxed at 22%. Your effective rate on overtime earnings is usually close to your ordinary marginal rate — not a dramatic increase.

The Scenario Analysis tab in this calculator shows you exactly how your net pay changes as overtime hours increase, letting you see precisely where bracket crossover points fall and how much of each additional overtime hour you actually keep after all taxes are applied.

FICA on Overtime

FICA taxes apply to overtime income exactly the same as regular wages. Social Security at 6.2% applies until your total wages for the year hit the $176,100 wage base in 2025. Once you cross that threshold, Social Security stops being withheld — including on overtime. Medicare at 1.45% has no wage cap and applies to all earnings including overtime.

An Additional Medicare Tax of 0.9% applies to wages over $200,000 for single filers or $250,000 for married filing jointly. Most hourly workers don't reach these thresholds from overtime alone, but high earners in high-OT industries like healthcare or construction sometimes do.

If you're a high earner already past the Social Security wage base for the year, overtime income becomes more favorable from a FICA perspective — you pay only Medicare (1.45%) rather than the full 7.65% FICA combined rate. The Annual Impact tab tracks your year-to-date wages and flags when you approach or cross the Social Security wage base.

Strategic Timing: When Does OT Actually Help?

Whether to prioritize overtime depends on your marginal tax rate, your financial goals, and where you stand relative to annual income thresholds. At low income levels, overtime is lightly taxed and each extra hour has a high net yield. As income rises, taxes take a larger share — but overtime still increases take-home pay in absolute terms.

One scenario where overtime timing matters: if you're close to a meaningful income threshold — a tax bracket boundary, the Social Security wage base, or the Additional Medicare Tax cutoff — the timing of overtime across pay periods or calendar years can slightly affect your effective rate. The calculator's Scenario Analysis tab shows you exact net values at different overtime hours so you can make an informed choice.

Another consideration is your 401(k) contribution strategy. If your payroll is set to contribute a fixed percentage, overtime pay automatically increases your 401(k) contribution — reducing taxable income and amplifying the tax benefit of working extra hours. Confirm your plan's contribution method with HR if you're targeting a specific annual contribution amount.