A bill rate is one number covering at least six things. Vendors like it that way, because a single number is hard to argue with. Broken apart, it is much easier to tell a fair rate from a padded one.
What is inside the hour
For a travel contract, the bill rate typically covers:
- The clinician's taxable wage — the hourly they are actually paid.
- Non-taxable per diem — lodging and meals, where the clinician qualifies for it under IRS rules.
- Burden — payroll taxes, workers compensation, unemployment insurance, and benefits. Usually 18–28% of the taxable wage, and it is real money, not margin.
- Recruiting and credentialing cost — sourcing, primary source verification, compliance, and the account team.
- Reimbursements — travel, licensure, and certifications, amortized across the contract.
- Gross margin — what the agency actually keeps.
The number to ask about is not margin percentage. It is what share of the bill rate reaches the clinician — because that is what determines whether they show up, stay, and finish the contract.
Why margin percentage is a bad question
Everyone asks it, and the answer is nearly meaningless without knowing what sits inside the rate. An agency quoting 22% margin while carrying travel, licensure, and a 26% burden may be cheaper to you than one quoting 15% that bills those separately.
It also invites vendors to move costs around rather than reduce them. Squeeze the quoted margin hard enough and the pressure lands on the clinician's package, which shows up two months later as a canceled contract and a re-fill you pay for again.
Why the same nurse costs three different amounts
In a system with several suppliers and no rate card, the same ICU RN specialty is often billed at three rates in one building. This is not usually anyone cheating. It accumulates:
- One supplier was engaged during a crisis period and never renegotiated.
- A manager approved an exception verbally to fill a night shift, and it became the running rate.
- A third supplier was onboarded at a rate benchmarked to a different market entirely.
None of it is visible without a rate card and an exception log, which is exactly why bill rate variance is the metric worth watching. Variance, not average, is where the recoverable money is.
The four questions
- “What is the clinician's taxable hourly on this rate?” A vendor who will not tell you is protecting something. You do not need the whole package, but the wage should not be a secret.
- “What is billed outside this rate?” Travel, lodging, licensure, overtime multipliers, call-back, holiday premiums, and cancellation. Get the full list in writing before signing.
- “What is the overtime multiplier, and on what basis?” Overtime billed at 1.5× the full bill rate rather than 1.5× the wage component is one of the most common ways a rate quietly inflates.
- “What triggers a rate exception, and who approves it?” If the answer is a phone call to a manager, you do not have a rate card. You have a suggestion.
Crisis rates
Crisis or rapid-response rates are legitimate — a clinician relocating on 72 hours notice for a short assignment genuinely costs more. The problem is that crisis rates outlive the crisis. Define the trigger, the premium, and the expiry in the agreement, before you need it. Ask when the rate reverts, and put a date on it.
What good looks like
A published rate card by specialty and market, held for the contract term. A written exception workflow with an approval trail you can audit. Everything billed outside the rate listed in the agreement. And an overtime basis stated explicitly rather than assumed.
None of that is exotic. It is just unusual, which is the actual problem.