10 Hours of Overtime at $25 an Hour Adds $375 a Week. So Why Is Your Real Rate Only $27.50?
“Time and a half” sounds simple: work past 40 hours and you earn 1.5 times your normal wage. But people often mix up the overtime rate with what they really earn per hour, believe overtime gets “taxed away,” or never check whether a two-week paycheck counted overtime correctly.
This piece walks through one ordinary week, using the default numbers from a calculator, and then looks at each of those three questions.
Disclosure: I built HandyTallies, the free site whose Time and a Half Calculator I use below. The baseline figures come straight from that calculator’s default inputs. Everything else is my own simple math with the same formula, and I label it as such. This is not financial, legal or tax advice.
The baseline week: $25 an hour, 40 regular hours, 10 overtime hours
These are the calculator’s default inputs, so you can reproduce them by opening the page and leaving it as is:
- Base hourly wage: $25.00
- Regular hours (1.0x): 40
- Overtime hours (1.5x): 10
- Double-time hours (2.0x): 0
Here is what it returns:
- Overtime rate: $37.50 an hour ($25 × 1.5)
- Double-time rate: $50.00 an hour
- Regular pay: $1,000.00 (40 hours at $25)
- Overtime pay: $375.00 (10 hours at $37.50)
- Total gross paycheck: $1,375.00 for 50 hours
- Effective rate: $27.50 an hour, blended across all 50 hours
- Annualized pace: $71,500, assuming that same week for 52 weeks
The formula behind it is the one payroll uses: regular hours × base rate, plus overtime hours × 1.5 × base rate, plus double-time hours × 2 × base rate.
Why the “real” rate is $27.50, not $37.50
Every overtime hour pays $37.50. But the hours before it still pay $25. So if you divide the whole $1,375 by all 50 hours, you get $27.50.
Both numbers are true; they answer different questions:
- $37.50 is what one more overtime hour adds to this week’s check. It’s the right number when you’re deciding whether to pick up an extra shift.
- $27.50 is what your time is worth on average this week. It’s the right number when you compare your job to another one, or when you ask whether a 50-hour week is worth it to you.
Here is another way to see it. Of the $375 in overtime pay, $250 is just your normal $25 rate for 10 more hours. Only $125 is the “half” (10 hours × $12.50). That premium is what lifts your average from $25 to $27.50.
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My own math, keeping $25 and 40 regular hours and changing only the overtime hours:
- 5 OT hours: $1,187.50 gross, blended rate about $26.39
- 10 OT hours: $1,375.00 gross, blended rate $27.50
- 15 OT hours: $1,562.50 gross, blended rate about $28.41
- 20 OT hours: $1,750.00 gross, blended rate about $29.17
The blended rate keeps rising, but slowly, because every extra hour is pulled toward $25 by the 40 hours underneath it. It can never reach $37.50.
What 10 hours a week adds up to over a year
The calculator’s annualized pace is $71,500. My own comparison:
- 40 hours a week only: $25 × 40 × 52 = $52,000
- 50 hours a week (the default): $71,500
- Difference: $19,500 a year
So you work 25% more hours (50 instead of 40) and earn 37.5% more gross pay. That gap between 25% and 37.5% is the overtime premium doing its job.
A useful reality check: to earn $71,500 in a straight 40-hour week, you’d need about $34.38 an hour ($71,500 ÷ 2,080 hours). If a job offer pays more than that for 40 hours, it beats this 50-hour week on money alone, and gives you 10 hours back. If it pays less, the overtime job earns more, and the question becomes whether those 10 hours are worth $19,500 a year to you.
Few people work the same overtime every week, so treat the annual figure as a pace, not a promise. These are gross numbers, before taxes.
Adding double time
Some employers and union contracts pay double time for holidays or a seventh straight day, and California requires it in certain cases (for example, over 12 hours in a single workday). My own math, adding 8 double-time hours to the default week:
- 8 hours × $50 = $400
- Gross for the week becomes $1,775 for 58 hours
- Blended rate rises to about $30.60
Double time moves the blended rate fastest, because each hour pays twice your base.
The overtime tax myth
A lot of people say overtime “pushes you into a higher bracket and the government takes it all.” That isn’t how US income tax works. Brackets apply in layers: only the dollars above a threshold are taxed at the higher rate, and your base pay doesn’t get re-taxed because you worked more. Overtime still leaves you with more money after tax than not working it.
Why does a big overtime check look so heavily taxed, then? Payroll software often withholds as if that one large check were your normal pay every period. That can mean more withheld on that check than you’ll actually owe for the year, and the extra comes back as a refund when you file.
One more thing worth checking: starting with the 2025 tax year, there’s a temporary federal income tax deduction for the “half” portion of qualified overtime pay for eligible workers, scheduled through 2028. It has caps and income limits, and it doesn’t touch Social Security or Medicare taxes, so read the current IRS guidance before counting on it.
The two-week averaging trap
If you’re paid every two weeks, this one is worth knowing. Under federal rules (29 CFR § 778.104), each workweek stands alone. Your employer can’t average a long week with a short one to avoid overtime.
My own math with the default $25 rate. Say you work 50 hours in week one and 30 hours in week two, 80 hours total:
- Averaged (wrong): 80 hours × $25 = $2,000
- Week by week (correct): week one is $1,375 (40 regular + 10 OT), week two is 30 × $25 = $750, total $2,125
- Shortfall: $125 for that one pay period
That $125 is exactly the overtime premium from week one. It’s easy to miss when the check just says “80 hours,” so it’s worth comparing your stub to your actual weekly hours.
Quick checks for your next paycheck
- Find your regular rate. If you get a shift differential or a non-discretionary bonus, it may need to be included in the rate your overtime is based on. For example, $20 plus a $3 night differential means overtime should be based on $23, which is $34.50, not $30.
- Count only hours worked. Under federal law, paid sick days, PTO and unworked holidays usually don’t count toward the 40 unless your contract says they do.
- Know your state. Federal law only looks at hours per week. California, Alaska and Colorado also have daily overtime rules.
- Check exempt vs. non-exempt. Being salaried doesn’t automatically disqualify you; your classification and duties do.
If you want to plug in your own wage and hours, the Time and a Half Calculator shows the overtime and double-time rates, the full paycheck breakdown, your blended rate and an annual pace, with presets for logistics, healthcare and construction. It’s free, runs in your browser and needs no sign-up. The other free tools on HandyTallies cover pay raises, dividend income, FIRE planning and more.
Not financial, legal or tax advice. Baseline figures come from the HandyTallies Time and a Half Calculator’s default inputs; the other scenarios are my own illustrations using the same gross-pay formula. Overtime rules vary by state, contract and job classification. I built HandyTallies.
