Plate Girder Fabrication Break-Even: $263K Monthly Revenue Target

Fixed costs $205.2K/mo Year 1 base

Contribution margin 81.4% After variable costs

Break-even revenue $251.9K/mo Revenue needed

Break-even timing Month 1 Launch month

Break-even calculator

Use this to test monthly revenue, direct costs, and fixed overhead against break-even for plate girder fabrication.

Lean Base Full

Monthly revenue Revenue is the pool that covers direct costs and fixed overhead. $ Lower sales Higher sales Variable expenses These are direct costs that move with each month of output. $ Lower direct cost Higher direct cost

Money available to cover fixed costs $4,987,608 $5,618,333 revenue - $630,725 variable expenses

Margin ratio

89%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly cost base break-even must cover. $ Lower overhead Higher overhead

Break-even chart Revenue Total costs

Which plate girder fabrication expenses are fixed, and which move with sales volume?

Cost classification

Break-even is reliable only when the monthly base is separated from unit-driven shop spend. In this model, the $45,000 facility lease stays fixed, while steel, freight, commissions, energy, and shop consumables move with girder volume and mix.

Expense	Cost	Break-Even Treatment	Common Mistake
Manufacturing Facility Lease	Fixed	Include the $45,000 monthly lease in the base before counting any girder sales.	Treating the lease like job spend.
Salaried plant management	Fixed	Include recurring management payroll before revenue, since supervision is needed even in slow months.	Excluding owner or management pay.
Raw American Steel Plate	Variable	Tie steel plate spend to girder mix, from $6,500 per standard unit to $15,500 per variable depth unit.	Averaging complex beams with standard beams.
Welding Consumables	Variable	Track per unit, from $850 for a standard girder to $2,100 for a variable depth girder.	Using one shopwide rate.
Factory Energy Consumption	Semi-variable	Split the base load from production usage; the model also carries energy at 1.5% of revenue.	Treating all usage as fixed.
Quality Control Testing	Semi-fixed	Step testing capacity as throughput rises; the model lists testing at 0.8% of revenue.	Underbudgeting inspection volume.
Heavy Haul Logistics and Freight	Variable	Tie freight to shipped girder revenue, starting at 4.5% in the first year and moving to 4.0% by the mature year.	Burying freight in overhead.
Equipment Maintenance Reserve	Semi-variable	Link the reserve to revenue and machine hours; the model carries maintenance at 1.0% of revenue.	Ignoring ramp wear.

How does break-even shift across lean, base, and full plate girder output?

Scenario table

Here’s the quick math: about $263K monthly revenue covers the roughly $204K fixed burden in a lean month. Year 1 averages $3.17M a month, and Year 5 averages $8.36M, so the cushion widens fast once backlog is real.

Planning case only; actual results will move with contract timing, mix, and site conditions.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean backlog case	$263K	$59K	$204K	77.5%	$0	Just covers overhead; any slip turns it negative.
Year 1 base case	$3.17M	$734K	$204K	76.8%	$2.23M	Comfortable cushion, but contract starts still drive cash.
Year 5 full run-rate	$8.36M	$1.05M	$204K	87.5%	$7.11M	Strong cushion; capacity and schedule control matter most.

What breaks the break-even plan for plate girder fabrication?

Stress test

The base plan has a wide cushion: about $3.17M monthly revenue versus a roughly $263K break-even line. Variable load, meaning the costs tied to each project, stays workable now, but delayed awards, steel spikes, or early overhead can cut that cushion fast.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$263K	$2.90M cushion	Wide cushion, but one weak month still matters.
Revenue shortfall	Monthly revenue falls 20% on delayed awards.	$263K	$2.27M cushion	You still clear break-even, but the cash buffer shrinks.
Fixed cost pressure	Monthly overhead rises by $204K before debt and taxes.	$527K	$2.64M cushion	Idle space and added admin load push the threshold up fast.
Margin pressure	Variable load rises to 30% from steel spikes and labor overruns.	$292K	$2.88M cushion	Even small margin loss lifts the break-even line.
Combined pressure	Revenue falls 20%, overhead rises $204K, and variable load rises to 30%.	$583K	$1.95M cushion	A weak month can burn cash when price, labor, and backlog all slip.

Is the shop ready to sign the lease and buy the production line?

Founder checklist

The model shows break-even in Month 1, but that only works if the shop is funded and backed by awarded work first. Here’s the quick math: minimum cash is $914K in Month 1, fixed overhead is $61.9K a month, and the equipment plan totals $3.485M.

1Awarded Work$38.0M

Verify the first-year pipeline can support the $38.0M revenue plan, because the plant should not be built on bids alone.

2Lease Load$61.9K/mo

Confirm the facility lease can handle the overhead crane install and the $61.9K monthly fixed load, because those costs start in Month 1.

3Equipment Stack$3.485M

Confirm the full equipment stack is budgeted and installed in sequence, because the welding cells, cutting system, cranes, forklifts, testing lab, electrical upgrades, tracking hardware, and workstations are all part of one line.

4Year 1 Crew16 FTE

Staff only to visible throughput: Year 1 calls for 16 FTE across leadership, engineering, robotics, welding, QA, and procurement, so every hire should map to shop output.

5Cash Reserve$914K

Hold at least $914K for Month 1, because that is the model’s minimum cash point and the upfront spend lands before the line is stable.

6Supplier FlowNo early stock

Lock steel plate, coating, freight, and testing suppliers, prove the cut-to-weld-to-inspect flow, and do not buy inventory ahead of awarded work without working capital coverage.