Pay-As-You-Go Workers' Comp

A conventional workers' comp policy is priced on an estimated annual payroll figure at the start of the term, billed in installments across the year, and then reconciled against actual payroll at a premium audit after the policy expires (see our audit guide). If your business grows, shrinks, or is seasonal, the gap between the estimate and reality can produce a meaningful adjustment — owed or credited — all at once at audit time.

That single reconciliation point is where a lot of the friction in the traditional model comes from. A business owner who hasn't been tracking the gap between estimated and actual payroll all year can be caught off guard by a large bill arriving well after the policy period it relates to has already ended, at a point when the cash may already be committed elsewhere.

Pay-as-you-go, sometimes called payroll-based billing, calculates premium each pay period from your actual payroll rather than from a single annual estimate. It typically works through an integration between the carrier and your payroll provider: each time you run payroll, the actual wages by employee and class code are reported automatically, and premium for that period is calculated and billed based on real numbers rather than a projection.

Because the data flows directly from your payroll system rather than being manually entered or estimated, the class code split for each employee's actual hours also gets reported more granularly, which matters if employees regularly move between different types of work during a pay period rather than performing one consistent role all year.

The appeal is mostly about cash flow and accuracy rather than lower cost, since the underlying rating factors — class codes, experience mod, state rates — are the same regardless of billing method:

Pay-as-you-go doesn't remove underwriting, doesn't remove the need for an annual audit reconciliation entirely (there's typically still a smaller true-up), and doesn't change your experience mod or class code rating. It also isn't a guarantee of no deposit or no upfront payment — specific billing terms, including any initial payment, deposit, or minimum premium, are set by the carrier and vary by program, so confirm the specific terms of a quote rather than assuming a standard structure across every carrier.

It's worth reading the actual program terms rather than assuming pay-as-you-go automatically means the lightest possible billing structure available. Some programs still carry a minimum premium commitment regardless of how low actual payroll runs, and some charge a per-payroll-run processing fee for the integration itself, which is worth weighing against the cash-flow benefit before assuming it's a clear improvement for your specific situation.

Because pay-as-you-go relies on a payroll integration, you'll typically need to be using a supported payroll system, and you'll need to authorize the data connection between your payroll provider and the carrier or its billing platform. If you run payroll manually or through a system that isn't integrated, some carriers offer a self-reported version of payroll-based billing that requires you to submit payroll figures each period instead of relying on an automatic feed.

Setting up the connection is typically a one-time step handled during onboarding, and most integrations only require read access to payroll data by class code and employee, not broader administrative control over your payroll system. Confirm with your carrier or agent exactly what access is being requested before authorizing it, as you would with any third-party data connection.

Pay-as-you-go tends to fit businesses with variable or hard-to-predict payroll — seasonal operations, businesses scaling headcount quickly, staffing-adjacent businesses — better than a stable operation with flat, predictable payroll year over year, where the difference between the two billing methods matters less. Not every carrier offers it, and availability can depend on your industry and payroll system.

A useful way to think about it: if you could confidently predict your payroll for the next twelve months to within a narrow range, the traditional model's single annual estimate probably won't produce a large audit surprise either way, and the main benefit you'd be paying for is convenience rather than accuracy. If your payroll is genuinely hard to forecast, the accuracy benefit becomes more meaningful.

Even on pay-as-you-go, don't skip preparing for the year-end reconciliation the way you would for a traditional policy. Keep your own payroll records organized by class code, confirm your payroll provider's reported figures actually match what you intended to report, and review any subcontractor payments the same way you would under traditional billing (see our 1099 contractor guide). The audit under pay-as-you-go is usually smaller, not nonexistent, and the same documentation habits that help under traditional billing still apply.

Whether pay-as-you-go billing is available, and on what terms, varies by carrier. Get Multiple Quotes within minutes to see which carriers we have access to offer payroll-based billing for your specific class codes and payroll system.