PVC Extrusion Plant Break-Even Analysis: About $175K/Month

Fixed costs $25.6K/mo Core overhead

Contribution margin 44% After variable costs

Break-even revenue $58.0K/mo Cover fixed base

Break-even timing Month 2 Cash break-even

Break-even calculator

Use this calculator to test monthly revenue, variable expenses, and fixed costs against break-even for a PVC extrusion plant.

Lean Base Full

Monthly revenue Revenue brings in the margin that covers fixed costs. $ Low sales High sales Variable expenses These are direct plant costs that rise with output. $ Lean costs Heavy costs

Money available to cover fixed costs $671,260 $1,393,750 revenue - $722,490 variable expenses

Margin ratio

48%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead your margin must cover. $ Lower overhead Higher overhead

Break-even chart Revenue Total costs

Which PVC extrusion plant expenses are fixed and which move with sales?

Cost classification

Break-even is only reliable when unit-driven expenses reduce contribution margin and monthly commitments sit below the line. Misclassifying resin, freight, power, or direct labor can make Month 2 break-even look safer than it is.

Expense	Cost	Break-Even Treatment	Common Mistake
Factory Lease	Fixed	Carry $15,000 per month as a base expense that must be covered before profit.	Spreading rent into unit COGS and hiding the monthly cash hurdle.
Insurance Premiums	Fixed	Include $1,500 per month in fixed overhead for the full Month 1 to Month 60 period.	Leaving insurance out of break-even because it does not touch production volume.
Production Supervisor	Semi-fixed	Model $65,000 per FTE, stepping from 1.0 FTE to 2.0 FTE when scale requires it.	Smoothing supervisory pay as a percent of sales instead of adding the step change.
Extrusion Operators	Semi-fixed	Use annual salary of $45,000 per FTE, rising from 4.0 FTE in the first year to 10.0 FTE by the fifth year.	Treating all operator payroll as pure overhead while production capacity changes in staffing steps.
PVC Resin	Variable	Deduct resin per unit before contribution margin: $4.50 for tubing, $15.00 for window profiles, $9.00 for irrigation pipes, $20.00 for door frames, and $350.00 for custom profiles.	Classifying resin as overhead instead of a unit-level production input.
Sales Commissions	Variable	Apply to revenue at 3.0% in the first year, then step down to 2.2% by the fifth year.	Entering 30% instead of 3.0%, which crushes contribution margin.
Shipping & Logistics	Variable	Apply to revenue at 2.5% in the first year, then step down to 2.0% by the fifth year.	Treating freight as fixed overhead when it moves with shipped sales.
Utilities Fixed Portion plus Factory Utilities	Semi-variable	Use the $2,000 monthly base, then add factory utilities at 0.8% to 1.0% of product revenue depending on the product line.	Putting all power into overhead and missing the usage-linked portion.

How does break-even shift from a lean opening ramp to a full PVC extrusion mix?

Scenario table

As the mix shifts toward higher-value window and custom profiles, CM ratio rises from 45.4% to 50.6%. Fixed overhead and payroll also climb, so the monthly break-even sales line moves from about $154k in the lean case to about $193k in the full case.

These are ramp assumptions for planning only, so the figures are not guaranteed sales, margins, or profit.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean ramp mix	$767.9k	$419.8k	$69.7k	45.4%	$278.4k	Break-even is reachable, but the cushion is still tight.
Base balanced ramp	$1.394M	$722.5k	$86.4k	48.2%	$585.0k	This is the cleanest break-even zone if the mix holds.
Full custom-heavy ramp	$2.095M	$1.034M	$97.4k	50.6%	$963.2k	Best cushion; custom mix and lower fees cut break-even risk.

What breaks first if PVC sales slip or resin costs jump?

Stress test

At the base plan, the plant clears break-even with room to spare. The real risk is a sales dip plus higher resin, power, or overtime, because fixed payroll and lease costs do not flex much.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change in sales mix or cost ratios.	$175k	$593k cushion	The base plan has room above break-even.
Revenue shortfall	Revenue falls 20% to about $614k, with variable ratios unchanged.	$175k	$439k cushion	Sales lag still clears break-even, but the buffer shrinks fast.
Fixed-cost pressure	Fixed overhead rises 15% to about $80k per month.	$201k	$567k cushion	Lease, utilities, and payroll creep up break-even without touching sales.
Margin pressure	Variable expense dollars rise 10% on the same sales base.	$206k	$562k cushion	Resin, power, and overtime can eat cash before volume does.
Combined pressure	Revenue falls 20% and fixed overhead rises 15% while variable expense dollars rise 10%.	$238k	$377k cushion	All three hits still clear break-even, but the safety margin is much thinner.

What should you verify before you sign the lease and order the first extrusion line?

Founder checklist

Before you lock in the lease, equipment, and hiring plan, check that the first-year mix, pricing, fixed costs, and cash floor still support break-even. If any one of those slips, the plant can look busy and still miss payback.

1Year 1 demand296.5K units

Confirm you have real orders or signed demand for 150,000 tubing, 40,000 window profiles, 80,000 irrigation pipes, 25,000 door frames, and 1,500 custom profiles before you commit to the plant.

2Contribution39.8% CM

Check that your price sheet still clears resin, labor, overhead, commissions, and freight, because a weak margin breaks the model even when volume lands.

3Fixed load$25.6K/mo

Verify you can cover the $25,550 monthly fixed cost base from opening month, since lease, office rent, insurance, utilities, software, legal, and marketing hit before scale does.

4Payroll ramp$530K

Stress test the Year 1 wage load and the move from 4 to 10 extrusion operators, because the line needs enough trained people to run steadily and keep scrap down.

5Capex plan$965K

Make sure the full equipment and setup spend for the extrusion lines, mixer, tooling, cooling, cutters, lab, forklift, and IT is funded in the right order so cash does not get trapped too early.

6Cash floor$715K M2

Hold at least $715,000 in cash by Month 2, because that is the model’s low point and you still need room for resin buys, utilities load, scrap, and customer payment timing.