Insurance planning · Prepare for insurance

Workers' Comp Payroll Change & Premium Scenario Calculator

For one payroll-rated class, compare payroll divided by $100, multiplied by the same applicable class rate and experience modifier. This shows a component change, not the complete premium or an audit bill.

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Calculate your result

Make it your business

Start with an example, then replace the assumptions. Results update as you type.

Examples illustrate different workloads. They are not market averages or recommended prices.

Current annual payroll for this class ($)

Use the payroll basis applicable to the class you are modeling.

New annual payroll for this class ($)

Use the same payroll basis and class as the current scenario.

Your policy rate per $100 of payroll ($/100 payroll)

Replace this illustrative value with your applicable policy or quoted rate. It is not a market rate.

Applicable experience modifier (factor)

Use the modifier that applies to your policy. One means no modifier change in this illustration.

Export to keep your work. Refreshing or leaving this page clears your inputs and saved comparison.

YOUR WORKSHEET

Illustrative annual premium change

$2,000.00

Current payroll-based component

$4,000.00

New payroll-based component

$6,000.00

Monthly equivalent change

$166.67

See the cost breakdown

Current payroll component: 4,000
New payroll component: 6,000

Rows use the dollars or hours named in each label.

What if the assumption changes?

Change only new annual payroll for this class by ±20%. Bounds apply. Everything else stays fixed; this is a scenario, not a forecast.

Illustrative annual premium change
New annual payroll for this class	Result
120,000 $ -20%	$800.00
150,000 $ Current	$2,000.00
180,000 $ +20%	$3,200.00

One class only. This is the payroll-rated component, not a complete premium or audit bill. Minimum premiums, fees, credits, assessments, state rules and carrier adjustments are excluded. Use the same applicable policy rate for both scenarios.

When your business changes

Use an actual policy or quote to review payroll changes with Kinro. This scenario does not change or issue coverage.

Explore the insurance next step

Illustrative planning, not an insurance quote. Inputs and results are excluded from tool analytics.

Understand the result

The method,
made clear.

Payroll-rated component = annual class payroll ÷ 100 × applicable policy rate × experience modifier. Change = new component − current component.

A lower payroll component may not reduce a minimum premium. Report changes through your carrier or licensed insurance professional and review the policy's audit process.

How to use this tool

01
Replace the example inputs with your actual costs and work estimates.
02
Compare the result with a real completed job or your current operating budget.
03
Adjust the assumptions, download your worksheet, and review the relevant insurance questions before your business changes.

Worked example

Using the illustrative inputs below produces illustrative annual premium change: $2,000.00. These are example business assumptions, not market benchmarks.

Current annual payroll for this class: 100,000 $
New annual payroll for this class: 150,000 $
Your policy rate per $100 of payroll: 4 $/100 payroll
Applicable experience modifier: 1 factor

Current payroll-based component: $4,000.00

New payroll-based component: $6,000.00

Monthly equivalent change: $166.67

Before you rely on the numbers

Assumptions
and limitations.

Use one class and one applicable rate at a time. Different classes, states and policies may use different bases and adjustments.
Every prefilled number is an illustrative example, not a market average, recommended price, tax rate, or insurance quote.
Results use only the costs and time you enter. Include owner compensation, insurance and overhead where applicable without counting a cost twice.
Calculations exclude sales tax and financing unless you include them in your inputs. Round your final customer price deliberately.

From planning to protection

Your next
insurance question.

Use an actual policy or quote to review payroll changes with Kinro. This scenario does not change or issue coverage.

Worksheet inputs are not submitted to a carrier or added to an insurance application. Confirm the facts in the quote form before you submit.

Questions owners ask

A few useful answers.

Is this a workers' comp quote?

No. It is an illustration of one payroll-rated component using your inputs. It excludes minimum premiums, fees, credits, assessments and other adjustments.

Does it estimate a claim settlement?

No. This tool is for an employer's insurance payroll scenario, not worker injury benefits or claim settlement values.

What if I have multiple classes?

Calculate each class using its applicable rate and payroll basis, then have the complete policy calculation reviewed. Do not substitute an average rate without checking the policy.

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Sources and methodology

Prepared by Kinro. Methodology and linked references checked 2026-10-29. Calculation formulas are Kinro planning models. Sources support the concepts stated below; they do not endorse our example values or results.

California State Fund: Premium calculation (opens in a new tab)
Payroll-rated workers' compensation components can use payroll per $100, a class rate, and an experience modifier. Our scenario is not a state-specific premium calculation.
NAIC: Small business insurance (opens in a new tab)
Different exposures call for different coverage discussions. Eligibility, requirements, exclusions, and policy terms need individual review.

Educational planning only. Confirm coverage, requirements and policy suitability with a licensed insurance professional. No coverage is quoted, bound or changed by using a worksheet.