The Contract-to-Hire Offer, Scored to Take, Counter, or Decline

You have a contract-to-hire offer in hand and a permanent search still running. This guide is for the candidate deciding whether to take that offer, counter it, or decline and keep holding out. It gives you a scoring model built on three dimensions and a formula that turns an hourly contract rate into a benefits-adjusted annual number you can set directly beside a permanent salary.

A contract-to-hire offer, called C2H, is a temporary engagement that both sides intend to convert to permanent employment after a trial. Two things make it different from a normal offer and break the usual math: the conversion to permanent is uncertain, and the hourly rate has to self-fund the benefits a salaried job would provide. Most published advice is a list of questions to ask. Questions are necessary, but they do not produce a number, and a number is what lets you compare this offer to the permanent role you might otherwise wait for.

What makes a contract-to-hire decision different from a normal offer

A contract-to-hire decision hinges on two variables a permanent offer does not have: an uncertain conversion, and an hourly rate that must cover benefits a salary would include. Score both, or you are guessing.

A permanent offer gives you a salary, a benefits package, and a start date. You can evaluate it against a market band and be done. A contract-to-hire offer hides the salary inside an hourly rate, hides the benefits behind "upon conversion," and makes the whole thing conditional on a trial you have not yet passed. The staffing-agency posts that dominate search results hand you a list of questions and stop there. They never turn the answers into a decision.

The model in this guide scores three dimensions and produces one output.

Two of these have hard numbers behind them. The third, written terms, is binary: the language is in the signed agreement or it is not.

How to read the conversion odds without trusting the headline number

Read conversion odds from the employer's own last-12-months count, not from any published industry figure, because the public numbers measure different things and conflict with each other. Ask how many C2H workers converted last year and under what criteria.

The published figures do not agree, and understanding why protects you from the biggest error in this decision. Staffing Industry Analysts reports that among large contingent-workforce buyers, the median share of agency temps converted to traditional employees is 10% in North America, 8% in Asia Pacific, and 5% in Europe. That is a buyer-side ratio: the share of an employer's whole temp pool converted, including everyone hired with no conversion intent at all.

Against that, staffing-agency posts widely repeat that nearly 60% of temporary workers transition into permanent positions, attributed to the American Staffing Association, and one guide cites an ASA report overall conversion rate of 34%. A vendor page states that roughly 50 to 70% of contract-to-hire workers convert if performance meets expectations and both parties agree. These conflict, and none links to a primary ASA table.

The gap is not a data quality problem. It is a definitional trap. The 10% figure counts a whole pool. The 50 to 70% figure counts only performance-qualified candidates in roles that had budget to convert. Both can be true because they divide by different denominators. If you take the 10% as your personal odds and decline a strong conditional offer, you have made a false-positive error with your own career.

So do not anchor on any headline. Ask the employer directly how many contract-to-hire employees converted to full-time in the past 12 months, the typical contract duration before a conversion decision, and the specific performance metrics that trigger conversion. A number with named triggers is a real signal. "People usually convert" is not, and it lies most often when the budget is thin and the manager wants you working now.

How to turn the hourly rate into a benefits-adjusted annual number

Multiply the hourly rate by realistic billable hours of 1,680 to 2,000, not 2,080, then subtract the costs you must self-fund. On a W-2 agency contract, that self-funded load is benefits and unpaid time, not the full self-employment tax.

Start by fixing the two errors that wreck this calculation. The first is using 2,080 hours - 52 weeks at 40 hours - as if you bill every one of them. You do not. Holidays, gaps between assignments, and unpaid time off all shrink your billable hours, and you only earn on hours you bill. One published illustration shows 1,360 realistic billable hours producing a $120 hourly floor, whereas dividing the same target by 2,080 yields $78.46 and understates the rate you need by a wide margin. Dropping from 2,080 to about 1,360 hours lifts the required rate from roughly $78 to $120, a 53% swing. That single assumption moves the number more than any tax line.

The second error is copying a 1099 freelance calculator. A W-2 agency contract-to-hire is not self-employment. W-2 employees pay 7.65% of wages for FICA while 1099 contractors pay the full 15.3% self-employment tax. On a W-2 agency placement the agency pays the employer half of FICA and your unemployment insurance, so you do not need to gross up your rate for the extra 7.65%. Only benefits and unpaid time need self-funding. This is why a W-2 contract-to-hire is cheaper to annualize than freelancers assume, and why step two of the procedure is to classify the engagement before you compute anything.

How much is the benefits load? Per the BLS Employer Costs for Employee Compensation release, for private industry wages and salaries averaged $32.60 per hour and accounted for 69.9% of employer costs, while benefits averaged $14.01 per hour, the remaining 30.1%. For state and local government, benefits ran 38.5% at $25.59 per hour.

So a private-sector hourly rate must self-fund roughly 30% of what total compensation would be. Read the formula in order.

A worked shape: a $60 W-2 rate at 1,800 billable hours grosses $108,000. Strip a 30% benefits load off the equivalent salaried package and you self-fund roughly $14 per hour of benefits, so subtract about $25,000, leaving an adjusted figure near $83,000 to set against a permanent salary. Adjust the load to what you actually buy - if you carry a spouse's health plan, your self-funded gap is smaller and the number rises.

Score take, counter, or decline

Decide by combining conversion odds, the annualized pay gap against the permanent alternative, and the strength of written terms. High odds plus a close annualized number plus signed terms is a take; any two of those weak is a decline; one weak dimension is a counter aimed at that dimension.

The three dimensions do not average cleanly, so read them as a grid. Conversion odds and pay together set the quadrant; written terms decide whether you can trust the quadrant at all.

Read the grid this way. Top-right, where odds are strong and the annualized number matches or beats your permanent alternative, is a take - but only after the terms are in writing. Bottom-left, weak odds and short pay, is a decline unless you want this specific job badly enough to accept the trial as the price of entry. The two counter quadrants tell you exactly which lever to pull: fix the terms when odds are the weak leg, fix the rate when pay is.

Score the offer on three dimensions and counter the weakest one, not the loudest.

The procedure, from odds to signed decision

Run these seven steps in order. Classification comes before math, and written terms come before your onsite start, because your bargaining power is highest before you begin performing well.

Refolk can shorten steps one and two by showing you the arrangement, not the title. Ask Refolk to surface people who started as agency contractors at a company and were later converted, and you get evidence of whether conversion actually happens there, which is the exact signal the employer's own count is supposed to provide.

The conversion terms to get in writing before you start

Get four items into the signed agreement before your onsite start: the target salary range at conversion, a benefits summary, the timeline to a conversion decision, and three to five objective KPIs that trigger it. Once you are working and performing well, you have less bargaining power than during the initial negotiation.

This is the one dimension you fully control, and it is where verbal offers go to die. Practitioner and staffing sources converge on the same four written items, and the reason to lock them early is structural: your leverage peaks before you have delivered anything. After you have proven yourself, the employer knows you are unlikely to walk, and the "we'll formalize it later" conversation quietly never happens.

Thanks for the offer. Before I start, I want to get the conversion terms into the agreement so we are aligned. Could we include:

1. Target salary range at conversion: the band the permanent role would pay.
2. Benefits summary: what transitions at conversion and the effective date.
3. Timeline: the date by which a conversion decision will be made.
4. Performance criteria: 3 to 5 objective KPIs that trigger the conversion discussion.

I'm also curious, for context: how many contract-to-hire employees converted to full-time in the past 12 months, and what typically drove the ones that didn't?

On duration, set expectations by field. General guidance puts contract-to-hire at 90 to 180 days. In industrial automation, periods run 90 to 180 days with 120 days most common, shorter 60 to 90 day windows suit roles where skill assessment is straightforward, and 180-plus days is common for senior controls engineers and project-level roles. A vague or open-ended duration is itself a warning: a decision date is what turns a trial into an offer.

One number the employer will not volunteer: the conversion fee. An agency conversion fee is usually 15 to 25% of the worker's anticipated first-year salary, paid by the employer to buy you out of the contract. That fee is not your problem to pay, but it is a hidden ceiling on your conversion salary, since a six-figure role can carry an extra $20,000 to $50,000 in fee. Raise its existence early and ask whether bill-rate credits offset it over the contract, because a high, unoffset fee can suppress your conversion pay or kill the conversion entirely.

The tenure reset that the hourly rate hides

Contract months usually do not count toward the converting employer's benefits clock, so your 401(k) eligibility and match vesting typically restart at the conversion date. That deferred employer match is a real cost your hourly rate never shows.

This is the silent decliner. Agency-employed temps typically receive no benefits but a higher hourly rate, with full benefits usually beginning upon permanent conversion. Because those contract months are not employment by the converting company, the eligibility and vesting clock starts fresh at conversion. A plan can exclude employees until they reach age 21, complete a year of service, or both, where a year of service is generally 1,000 hours in a 12-month period. Employer match vesting can be delayed further: the IRS allows a waiting period of up to six years on employer contributions, with cliff vesting up to three years.

Put those together and the cost is concrete. If you contract for six months and then convert, that half-year does not count toward your one-year eligibility wait, so your match may not even begin until well over a year after your first day on site. On a role with a meaningful match, that can defer thousands of dollars you would have accrued as a direct hire from day one. The hourly rate never reflects this, which is exactly why the annualized number should flag it. Confirm the plan's eligibility and vesting schedule in writing, and produce a dated benefits-start estimate rather than assuming coverage begins at conversion.

How this goes wrong: the failure modes

The predictable errors cluster around trusting the wrong number, copying the wrong tax math, and accepting verbal promises. Each has a check that catches it before you sign.

• Quoting 10% as your personal odds. The SIA figure is a whole-pool ratio, not your conditional chance. The false positive is declining a strong offer. Check by asking the employer's own last-12-months conversion count.
• Trusting "nearly 60%." It is repeated across agency blogs with no primary ASA table, and a cited ASA figure elsewhere sits at 34%. Check by demanding the source document; if none exists, treat it as marketing.
• Dividing salary by 2,080. This understates the rate you need by ignoring unpaid time, producing $78.46 where the true floor is $120. Check by recomputing at 1,680 to 2,000 billable hours.
• Double-counting the FICA gap on a W-2 agency contract. The 15.3% self-employment tax applies to 1099, not W-2 agency placements where the agency pays employer FICA. The false positive is inflating the rate you demand. Check the classification in step two first.
• Accepting verbal conversion promises. "Eventual full-time" with no date or KPIs is not an offer. Check whether the salary range, timeline, and criteria are in the signed agreement.
• Ignoring the tenure reset. Assuming contract months count toward vesting is usually wrong; they restart at conversion. Check the plan's eligibility and vesting schedule in writing.
• Reading the conversion fee as your problem. The 15 to 25% fee is the employer's cost, but it can suppress your conversion salary. Check whether bill-rate credits offset it.

The scarcity of the "Contractor" label is itself a lesson in probing the arrangement rather than the title. In Refolk's index, profiles with a "Contractor" title in the United States total 48,570, against just 2,503 in the United Kingdom, and US "Consultant" profiles total 246,553 - 5.1 times the US contractor pool. Contingent workers routinely self-describe by function, so a conversion-odds question should target how the person was actually engaged, not how they labeled themselves.

Keeping the decision defensible

Before you call the decision, verify each dimension has a real value behind it, not a hope. A defensible take, counter, or decline attaches a number to every claim.

The one input that never comes from a formula is evidence that conversion happens at this specific employer. The employer's self-reported count helps, but it is self-reported. Corroborate it by finding people who actually made the jump there.

Keep the model current by re-checking the two inputs that drift. The benefits share moves with each BLS Employer Costs for Employee Compensation release, so pull the latest private-industry percentage rather than trusting a remembered figure. And re-ask the conversion count each time you evaluate a new employer, because it is the only number in this whole model that is actually about you.