Kaiser · Inter-Con · Overhire Stipend Offer — Tax Explanation
The overhire stipend is not a tax trap.
Withholding is a down payment on your tax bill. It is not the bill. Come April, the IRS adds up all your wages, base plus stipend, and settles up against the real brackets. The word "stipend" changes nothing about what you actually owe.
Myth vs. Fact
Myth
"The stipend gets taxed at a higher rate."
There is no special tax bracket for stipends or bonuses. Your tax is calculated once, on your total taxable income for the year. Base and stipend land in the same pile.
Fact
The 22% is withholding, not a tax rate.
The IRS lets employers set aside a flat 22% on supplemental pay (stipends, bonuses, commissions) instead of using your W-4. That is a collection shortcut for the employer. It is not what you owe.
Myth
"So the IRS keeps more of my money."
No. If they withhold more than you owe, you get it back as a refund. If they withhold less, you pay the difference. Either way it reconciles to the same final number.
Fact
It is just wages on your W-2.
A cash stipend that makes up a pay difference is supplemental wages, not some separate "fringe benefit" category. Same income tax, same Social Security and Medicare (7.65%), same as every other dollar you earn.
How it actually flows
01
During the year
Employer withholds 22% from the stipend + your normal withholding from base pay. Money set aside.
02
In April
Add base + stipend = total wages. Subtract the standard deduction. Run it through the normal brackets.
03
Settle up
Total withheld minus total owed = your refund (or small balance). The label never mattered.
Worked example (illustrative, single filer)
EDS base rate$26.66 / hr
Base pay (2,080 hrs)$55,453
Stipend to reach $45/hr equiv.$38,147
Total wages$93,600
At this income a single filer's top dollars sit in the 22% marginal bracket — the same 22% the stipend was already withheld at. So the flat withholding roughly matches what you owe on it. No penalty, no premium. And Washington has no state income tax, so there is zero state withholding wrinkle on any of it.
How much smaller is the monthly check? (2026 rates)
Same scenario: 2,080 hrs · base $26.66/hr ($55,453) · stipend $18.34/hr ($38,147) · target $45/hr ($93,600). The green bar is roughly what you'd actually owe on the stipend; the amber gap is what the flat 22% holds back extra and hands back at filing.
To be clear about the crew: nobody here has a spouse also on this Inter-Con / Kaiser Armed HPO contract or drawing this same stipend. So the realistic cases are the first two rows. The third row only applies if a married officer's spouse happens to earn comparable pay at a completely separate employer.
Roughly what you owe on the stipend
Extra held now, returned at tax time
Single filer, one income
Standard W-4, no adjustments
0%22% flat25%
~19.1% owed + = ~$92 less / month
Married filing jointly, one income
Standard W-4, spouse not earning
0%22% flat25%
~11.9% owed + = ~$320 less / month
Married filing jointly, two similar incomes
Spouse earns comparable pay at a separate job — never this Inter-Con / Kaiser HPO contract
0%22% flat25%
~22% owed + = ~$0 difference
| Filing status | Normal rate on stipend | Flat rate | Monthly check | Held back per year* |
|---|
| Single, one income | ~19.1% | 22% | ~$92 less | ~$1,106 |
| Married, one income | ~11.9% | 22% | ~$320 less | ~$3,845 |
| Married, two incomes | ~22% | 22% | ~$0 | ~$0 |
*This column is not a tax. It is money withheld above what you owe on the stipend, refunded when you file (assuming your base-pay withholding is also dialed in). The married two-income row can actually run the other way: a standard W-4 may under-withhold, so check the "multiple jobs" box on your W-4 if that's your household.
The formula checks out. (stipend/hr) × (rate gap) × 2,080 ÷ 12 = monthly difference. The only fix is the rate gap for married-one-income: it's about 10.1% (22% minus ~11.9%), not 7%, because a one-income married household withholds nearer 12% on the stipend. So 18.34 × 0.101 × 2080 ÷ 12 ≈ $320, not $223.
Heads up: the 22% flat rate is not guaranteed. How the stipend gets withheld is Inter-Con's payroll call, run through Paycom, and depends on how they've configured their policies. The flat 22% supplemental method is just the compliant, low-effort default. They could instead code the stipend as a normal Stipend Hourly line, matched 1:1 to hours worked, and withhold it as regular wages per your W-4. If they do that, the "extra held back" numbers above shrink or disappear. Either way the final tax owed is identical, but monthly take-home depends on the method, so ask which one they use.
Questions to get answered — in writing
The tax panic is aimed at the wrong target. A stipend promised verbally is only as solid as what's documented. These are the questions to put to Inter-Con leadership, in priority order.
The one goal
Get the stipend amount, structure & end conditions in writing today.
1
Get it in writing
Can we get the stipend amount, structure, and end conditions documented today — an offer-letter addendum or confirming email?
Verbal from a VP does not bind payroll. A written record is the entire point.
2
Duration & revocability
Is the stipend guaranteed for the full contract term, or discretionary and revocable at any time? What ends it?
A make-whole stipend that can vanish at will is a very different offer than a guaranteed one.
3
What disqualifies me from it
What specifically causes me to lose the stipend — the shift type I pick up (EDS vs. HSO), falling below full-time hours, performance or discipline, or just the end of the overhire period?
Need the exact conditions in writing, not "we'll take care of you."
4
Overtime (FLSA regular rate)
Since the stipend is non-discretionary pay, under the FLSA it should be included in my regular rate for overtime. Is my OT time-and-a-half on the combined ~$45 effective rate, or only on the $26.66 base?
Non-discretionary pay must factor into the OT regular rate. OT on base only is likely an underpayment.
5
Payroll coding (Paycom)
How is the stipend coded in Paycom — flat 22% supplemental withholding, or a normal "Stipend Hourly" wage line at my W-4 rate? It changes my monthly take-home.
The flat 22% is just the easy, compliant default. A 1:1 "Stipend Hourly" line withheld as normal wages means little to no extra held back.
6
Benefits interaction
Does the stipend count as compensation for 401(k) match and PTO accrual, or only base pay?
Depends how the plan defines "compensation." Real money over time.
7
NDA or side agreement
Does accepting this arrangement require signing an NDA, confidentiality, or non-disparagement agreement? If so, I'd like a copy to review before signing.
Do not sign anything today. If there's a side agreement, route it to legal review first.
Anchor everything to: get it in writing today. If they'll only confirm verbally, send a recap email afterward and get a "confirmed" reply — that still builds the record.
Sources: IRS Publication 15 (Circular E), Employer's Tax Guide, 2026 · IRS Publication 15-A, Employer's Supplemental Tax Guide, 2026 · IRS Publication 15-T, Federal Income Tax Withholding Methods, 2026. Supplemental wage flat withholding rate: 22% (37% on amounts over $1M/yr). This sheet explains withholding mechanics, not personalized tax advice.