Plumbing · IL
Plumbing Profit Margin in Illinois [2026]
Operating a plumbing business in Illinois comes with state-specific costs that directly impact your bottom line. Minimum wage is $15/hr, state income tax ranges 4.95% (flat), and commercial rent averages $20/sq ft. Here's how these factors translate to real profit margins — with data-backed estimates.
Plumbing Profit Margins in Illinois
11.6%
Est. Net Margin
$21/hr
Avg Hourly Labor
$20/sq ft
Median Commercial Rent
$9/hr
Tipped Min. Wage
Monthly Cost Breakdown — Illinois Plumbing
Based on a typical plumbing with $350,000 annual revenue:
| Cost Category | National % | Illinois % | Monthly $ |
|---|---|---|---|
| COGS / Inventory | 40.0% | 40.0% | $11,667 |
| Labor | 25.0% | 31.0% | $9,042 |
| Occupancy (Rent + Utilities) | 6.0% | 6.0% | $1,750 |
| Insurance (WC + GL) | 6.0% | 7.0% | $2,042 |
| Marketing | 5.0% | 5.0% | $1,458 |
| Other | 5.0% | 5.0% | $1,458 |
| Total Operating Cost | 87.0% | 94.0% | — |
How Illinois Costs Affect Your Plumbing Margin
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Labor Cost Impact
With a minimum wage of $15/hr, Illinois's labor costs are approximately 25% above the national average. A full-time employee earning well above minimum wage costs approximately $43,680/year in wages alone — before payroll taxes, workers' comp, and benefits. Tipped workers receive $9/hr — a partial tip credit that partially offsets labor costs.
Tax & Regulatory Environment
Illinois imposes a state income tax of 4.95% (flat). Combined with workers' compensation at $2.85/$100 payroll, the total tax and insurance burden is near the national average.
Local Market Context: Plumbing in Illinois
Illinois’s high-cost environment for plumbing: minimum wage $14.0/hr, commercial rent at $24/sf, workers’ comp at $2.6/$100 payroll. The above-average minimum wage pushes labor costs above national norms. Mid-size market (12.5M people) provides a balanced growth environment.
How to Improve Plumbing Margins in Illinois
Run the Numbers for Your Business
Use our free calculators to model your specific scenario in Illinois:
Plumbing in Illinois vs Other States
How Illinois compares to other major states for plumbing businesses:
| State | Min. Wage | Rent/sq ft | State Tax | Est. Net Margin |
|---|---|---|---|---|
| California | $17/hr | $38 | Yes | 9.0% |
| Texas | $7.25/hr | $18 | None | 15.8% |
| Florida | $13/hr | $22 | None | 12.5% |
| New York | $16/hr | $42 | Yes | 9.0% |
| Illinois ◀ | $15/hr | $20 | Yes | 11.6% |
| Ohio | $10.7/hr | $14 | Yes | 14.8% |
| Pennsylvania | $7.25/hr | $16 | Yes | 15.6% |
| North Carolina | $7.25/hr | $17 | Yes | 16.1% |
| Georgia | $7.25/hr | $18 | Yes | 15.6% |
| Michigan | $10.56/hr | $14 | Yes | 14.8% |
Frequently asked questions
What is a good profit margin for a Plumbing in Illinois?+
A healthy Plumbing in Illinois should target a net profit margin of 14.6%–17.6%. The estimated baseline net margin in Illinois is 11.6%, driven by labor costs at $21/hr (above national average) and commercial rent at $20/sq ft. Top-quartile Plumbing operators in Illinois achieve margins 3–5 points above the baseline through disciplined cost control.
How does Illinois compare to other states for Plumbing profit margins?+
Illinois ranks in the mid-range for Plumbing operating costs. Key differentiators: minimum wage $15/hr (25% above national average), state income tax 4.95% (flat), and workers' comp at $2.85/$100 payroll. See the state comparison table above for a side-by-side view.
What are the biggest costs for a Plumbing in Illinois?+
For a typical Plumbing in Illinois: Labor (25-45%) + Materials/COGS (5-40%) + Occupancy (3-15%). In Illinois, labor costs are particularly significant due to the $15/hr minimum wage — 125% of the national average.
How can I reduce labor costs in a Illinois Plumbing?+
In Illinois, tipped employees can be paid $9/hr — substantially below the $15/hr regular minimum. Ensure tipped staff actually report enough tips to meet the full minimum wage requirement. Additional strategies: cross-train staff to reduce idle labor, use scheduling software matched to demand data, and consider part-time or seasonal staffing during peak periods.
Should I operate as an LLC or S-Corp for a Plumbing in Illinois?+
In Illinois, with state income tax of 4.95% (flat), both LLC and S-Corp income pass through to your personal return at the same state rate. The S-Corp structure may still save on self-employment tax (FICA) — consult a Illinois CPA to model your specific situation. Use our LLC vs S-Corp calculator to run your numbers.