Most workers' comp policies ask for a large share of the year's cost before you pay your first employee. Pay-as-you-go billing removes that up-front payment: you pay a small amount each time you run payroll. A PEO, an outside company that runs your payroll, HR and often benefits, typically removes it too, but charges its own fee for the whole package. Either way, the insurer still checks your real payroll after the year ends, and that check can still produce a bill.

The short version

  • The problem: workers' comp is priced per $100 of wages. A standard policy bills part of the year's estimated price before coverage starts. After the year ends, the insurer checks your real payroll and sends a bill or a refund.
  • Pay-as-you-go: you pay each time you run payroll, on that pay run's actual wages, often with nothing down. The cost per $100 of payroll stays the same; only the timing changes.
  • A PEO: the PEO typically bills you each payday for wages, taxes and workers' comp together, plus its fee for payroll, HR and benefits. Many PEOs only take companies above a minimum number of employees.
  • What neither fixes: if the policy lists your workers under the wrong job category (the category sets the rate), or you paid subcontractors who had no workers' comp of their own, the year-end check can still add a bill.
  • What to do: if the up-front payment (the deposit) is your only problem, ask insurers about pay-as-you-go first. If you also want payroll and benefits handled, compare a PEO's full yearly cost.

Why workers' comp is hard on cash flow

Workers' comp is the insurance that pays medical bills and lost wages when an employee is hurt on the job. Its price, called the premium, is a rate for every $100 of payroll. The rate depends on the type of work your employees do; insurers call each type a "classification," or job class. The insurer estimates your payroll for the year, multiplies it by the rate and bills you, as the California Department of Insurance explains.

On a standard policy, the first payment is a deposit. It is not extra money: it is the first part of the year's estimated price, paid before coverage starts. The rest comes in installments. It varies by insurer. New York's state insurance fund, for example, asks for 25% down and then nine installments on policies costing $1,000 a year or more, unless the policy qualifies for its equal monthly payment plan.

This is not only a first-hire problem. A standard policy starts each policy year on a new payroll estimate, and California's State Compensation Insurance Fund bases its down payment on that estimate. So an established business can face a deposit at each renewal too. Ask your insurer how yours bills.

After the policy year ends comes the audit: the insurer's check of your actual payroll records. If you paid more in wages than estimated, you owe more premium; if less, the insurer owes you a refund.

So a business gets squeezed twice: a large payment up front, and a bill months after the year is over. One contractor described the second part this way: "The retroactive audit is such a trap, you think you got a good rate then boom six months later they come for more money and you already spent it on materials."

What pay‑as‑you‑go changes, and what it doesn't

With pay-as-you-go billing, the premium is worked out from your actual wages, often every pay period or every month. Usually your payroll service sends each payroll's figures to the insurer; ask whether yours can. New York's state insurance fund advertises "$0 down," with payments based on each pay period's actual payroll.

What it changes:

  • No large deposit, in most cases. One exception: each insurer has a minimum premium, the least it will charge for a year of cover. If your yearly premium would come in below it, you pay the minimum instead, all of it up front, says California's State Compensation Insurance Fund.
  • Payments that follow your season. If your payroll rises and falls through the year, you pay more in busy months and less in slow ones.
  • A smaller payroll correction at year end. Because you paid on actual wages all year, the payroll part of the audit has little to correct.

What it doesn't change:

  • The audit still happens. Every policy still ends with a final bill that settles up against the real payroll. California's State Compensation Insurance Fund says "all policies will have a final bill."
  • The price. One reply in a small-business thread put it plainly: "You don't save anything, you just have less of a chance for a deficit on your year end audit."
  • Job classes and subcontractors. These can still change the bill at audit (more below).

What a PEO changes, and what it doesn't

A PEO (professional employer organization) often provides workers' comp for your employees. When it does, workers' comp is typically charged on each payroll invoice, based on that payroll's wages, so there is no separate deposit to an insurer. In some states, such as Texas, the contract can instead leave the workers' comp policy in your name. Then the PEO doesn't fix the deposit: your insurer keeps billing you as before. The contract says which; ask the PEO to show you.

How a PEO covers your workers depends on your state's rules. In California, the example in this article:

  • Your company gets its own policy. Even when the PEO buys the coverage, California requires a separate policy just for your company's workers.
  • Your own claims history prices it. Insurers compare your past injury claims with similar businesses and turn that into a percentage, your "experience modification": below 100% lowers your price, above 100% raises it. On the policy for your workers, your own figure applies, not the PEO's, so you can't borrow a PEO's better record.
  • Your workers keep their job class. They are classified "as though the workers are employees of the client," meaning you.
  • You are covered only if the PEO actually buys the policy, under California law. Ask for proof that the policy is active.

In another state, ask the PEO which of these apply to you.

What it changes, when the PEO carries the coverage:

  • No deposit to an insurer. You typically pay as you run payroll.
  • One bill. Payroll, taxes, workers' comp and usually benefits come on one invoice.

What it doesn't change:

  • The audit. The policy that covers your workers is still checked against real payroll. Ask the PEO to show you, in the contract, how and when it bills you for any difference. If the contract doesn't say, the year-end surprise is still possible.
  • Your rate. Don't assume a PEO gets you a lower one. Ask for the workers' comp part of the quote in writing, with the rate per $100 and the job class. If the rate is higher than an insurer quoted you for the same job class, you pay more for workers' comp inside the PEO. Some PEOs show it as its own line; others build it into one bundled fee.
  • The cost of the package. PEOs typically charge $40 to $160 per employee per month, or 2% to 12% of payroll. If workers' comp cash flow is your only problem, that is a lot to pay to fix it.
  • The minimum company size. Many PEOs won't take a company below a set number of employees. A business making its first hire may not qualify yet.

What the year‑end audit can still catch

Under all three ways of paying, the audit can still add a bill for:

  • The wrong job class. A policy lists a job class for each kind of work you do. If the auditor moves some payroll into a more expensive class already listed, California charges the higher rate back to the start of the policy year. A move into a more expensive class that wasn't on your policy at all usually costs more only from the date the rating bureau makes it official. The exception: if the wrong class is caught within three months of when it started, the higher rate can go back to that date.
  • Uninsured subcontractors. If you pay subcontractors who don't carry their own workers' comp, the State Compensation Insurance Fund says what you paid them, reported on 1099 forms, "may be included in the audit as payroll." Before a sub starts, get a certificate of insurance, a one-page proof of their workers' comp policy, and keep it on file.
  • Overtime records. In California, if you pay time and a half, the extra half is free of premium only if your payroll records show it separately. Otherwise the audit charges premium on the full overtime pay. Ask your payroll provider whether your reports split it out.

Tips work the other way: in California, tips from customers don't count as payroll for workers' comp, but the State Fund asks restaurants to keep a record of them for the audit.

Worked example: a first hire in California

An electrician in California, about to hire a first employee, posted: "the lowest rate I am getting back is $11.70/100, not only that but they want almost half of the year paid up front." That means $11.70 for every $100 of payroll. Not a contractor? The math is the same for any business. Here it is applied to made-up payroll: one employee at $25 an hour, 40 hours a week. That is $52,000 a year ($25 × 40 × 52), or $2,000 every two weeks.

The estimated premium is $52,000 ÷ 100 × $11.70 = $6,084 a year.

One first hire, three ways to pay for workers' comp ($52,000 made-up payroll at $11.70 per $100)
Standard policy with a depositPay-as-you-go billingThrough a PEO
Paid before the first paycheck$1,521 (25% down, as in the New York plan above) to $3,042 (half down, close to what the electrician was asked)Often $0. If your premium is below the insurer's minimum, you may pay that minimum in full up frontTypically no workers' comp deposit, when the PEO carries the coverage. It is usually charged on each payroll invoice
Ongoing paymentsThe rest in installments, for example 9 payments of $507 after a 25% deposit ($4,563 ÷ 9)$234 per two-week payroll ($2,000 × $11.70 per $100)$234 with each payroll if the PEO uses the same rate, plus the PEO's own fee
The year's payroll comes to $70,000, not $52,000 (for example, a second, part-time hire)Audit bill of $2,106 after the year is over ($18,000 more payroll × $11.70 per $100), for $8,190 in totalPaid along the way: each payroll's charge rose with the wages ($8,190 in total). The audit checks the figuresSame as pay-as-you-go. The policy is audited, and your contract says how any difference is billed to you
The year's payroll comes to $40,000 (for example, fewer hours)Refund of $1,404 after the auditPaid $4,680. Nothing to refundSame as pay-as-you-go
Can the audit still add a bill?Yes, for a wrong job class or uninsured subcontractorsYes, for the same reasonsYes, for the same reasons
Extra cost of the methodNoneUsually no extra charge from the insurer. Your payroll provider must be able to send each payroll to the insurerThe PEO's fee, which also pays for payroll, HR and benefits

Illustration only. The $11.70 rate is one California electrician's quote, used as an example, not a typical rate. Payroll is made up: $25 an hour, full time, paid every two weeks. The deposit share varies by insurer. Some insurers bill pay-as-you-go monthly; the yearly total is the same. The PEO column assumes the same $11.70 rate; a PEO's rate can differ. Not a quote. Sources checked October 20, 2026.

The PEO's fee pays for everything else in the package. For this one employee, $40 to $160 a month is $480 to $1,920 a year; priced at 2% to 12% of payroll, it would be $1,040 to $6,240.

Skipping coverage is not a cash‑flow fix

In California, every employer with even one employee must carry workers' comp. Going without is a crime, with a fine of at least $10,000. The state can also order you to stop using employees until you buy coverage, effective the day the order is served, and charge $1,500 per employee, or more. Other states set their own rules.

Which one fixes your problem

Decision flowchart: if the up-front deposit is the problem and you only need workers' comp, ask insurers about pay-as-you-go billing; if you also want payroll, HR and benefits handled and meet a PEO's minimum headcount, compare PEO quotes. If the year-end bill is the problem, keep the insurer's payroll figure up to date, which pay-as-you-go does, and check job classes and subcontractor certificates.
Which fix matches your cash-flow problem.
  • Only the deposit hurts, and you are happy with your payroll setup: ask insurers, or your insurance agent if you have one, about pay-as-you-go billing. It usually adds no service fee.
  • The year-end bill hurts: pay-as-you-go keeps the insurer's payroll figure up to date. On a standard policy, tell your insurer when payroll changes; the California Department of Insurance says corrected estimates help avoid a large audit bill.
  • You also want payroll, HR and benefits handled: a PEO that carries your workers' comp typically fixes the deposit along the way. Judge it on the whole package; see our PEO workers' compensation guide.

Questions to ask

Ask an insurer or agent:

  • Do you offer pay-as-you-go billing for my type of work, and can my payroll provider send you each payroll?
  • Is my policy small enough to be charged your minimum premium, and if so, is it due up front? If yes, pay-as-you-go won't remove the up-front payment.
  • Which job class did you use, and what will the audit check?

Ask a PEO:

  • Will you carry the workers' comp for my employees, and can you show me the policy is in force?
  • What rate per $100 of payroll will you charge, for which job class?
  • How do you bill me if the audit finds a difference?
  • What is your minimum number of employees?

The bottom line

Pay-as-you-go billing and a PEO both replace the up-front deposit; a PEO does it inside a larger package with its own fee. Neither removes the year-end audit. This is general information, not insurance advice, so confirm the details with your insurer or agent.

If you are weighing a PEO for more than workers' comp, we can connect you with our independent broker. Request a Consultation through our PEO quotes page. It takes several business days, because the broker gathers quotes on your actual employee list. The consultation is free to you. If you sign through the broker, he shares part of his fee with us.

The detail, for your accountant or broker

Was $11.70 a fair quote? California's workers' comp rating bureau, the WCIRB, publishes a suggested starting rate for each type of work, and the state Insurance Commissioner approves it. For electricians paid under $40 an hour, the starting rate is about $3.73 per $100 of payroll from September 1, 2026. It leaves out the insurer's own running costs, so real quotes usually come in higher, and each insurer sets its own price. The electrician's $11.70 is about three times the starting rate. Use it as a yardstick, not a price you can expect, and compare real quotes.

Sources