Bell Foundry Break-Even Analysis: About $95K Monthly Revenue

Fixed costs $60.9K/mo Recurring base

Contribution margin 58.7% After variable costs

Break-even revenue $103.7K/mo Revenue target

Break-even timing Month 25 Model break-even

Break-even calculator

Check how monthly revenue, variable expenses, and fixed monthly costs drive the break-even point for a bell foundry.

Lean Base Full

Monthly revenue Revenue sets the dollar pool that can cover direct costs and overhead. $ Lower sales Higher sales Variable expenses Use costs that rise with each bell order, including direct materials and project-linked spend. $ Tighter costs Higher costs

Money available to cover fixed costs $132,955 $185,167 revenue - $52,212 variable expenses

Margin ratio

72%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead base break-even must cover. $ Lean overhead Heavier overhead

Break-even chart Revenue Total costs

Which expenses stay fixed and which move with sales in a bell casting facility?

Cost classification

Break-even is only useful if recurring overhead stays separate from order-driven inputs. Here, fixed monthly overhead is about $29,200 before payroll, while materials, freight, commissions, and project work should move with each sale.

Expense	Cost	Break-Even Treatment	Common Mistake
Foundry facility lease	Fixed	Use $12,000 per month in fixed overhead from Month 1 through Month 60.	Allocating rent to each bell and making low-volume months look less profitable than they are.
Insurance and liability	Fixed	Use $3,200 per month as recurring overhead in the monthly break-even base.	Dropping it below gross margin and overstating contribution on each order.
Professional services	Fixed	Use $2,000 per month as a stable operating expense within the planning range.	Treating advisory and compliance support as one-time when it runs every month.
Salaried technical and management team	Semi-fixed	Model $380,000 in first-year salaries, then step up with planned full-time-equivalent changes by Year 5.	Forcing payroll to rise with every unit instead of adding staff in capacity steps.
Industrial utilities and smelting energy	Semi-variable	Use $4,500 per month for base utilities, plus smelting energy at 1.0% to 2.0% of revenue by product type.	Treating every shop utility as fixed and overstating margin on furnace-heavy work.
Bronze alloy ingots	Variable	Assign per unit: $85 for a commemorative table bell, $1,800 for a single steeple bell, and $55,000 for a full carillon system.	Averaging metal across all products and hiding the true margin by product line.
Sales commissions	Variable	Apply 5.0% of revenue in Year 1, declining to 4.0% by Year 5.	Placing commissions in fixed overhead and missing the real contribution margin on new sales.
Project specific R and D	Variable	Apply 3.0% of revenue in Year 1, declining to 2.0% by Year 5.	Spreading custom project work across all orders instead of tying it to the revenue that causes it.

How does break-even change from lean to full production?

Scenario table

The model clears break-even once monthly revenue holds above roughly $95k. Lean Year 1 sits below that line, while base and full cases move well above it and need a mix of large institutional jobs plus smaller restoration and table bell work.

Planning assumptions only; actual orders and timing can move results.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean Year 1 mix	$89.3k	$68.6k	$29.2k	23.2%	-$8.5k	Still below break-even, so losses remain likely.
Base Year 3 mix	$185.2k	$48.8k	$29.2k	73.7%	$107.2k	Above break-even, with room for timing swings in larger projects.
Full Year 5 mix	$296.8k	$74.7k	$29.2k	74.8%	$192.9k	Well above break-even, so slower months are easier to absorb.

What pressures the break-even plan most for this foundry?

Stress test

Year 1 is close, but not safe. A 10% revenue slip, a 10% fixed-cost jump, or weaker margin from bronze, energy, labor, or freight can push break-even past the current plan and strain cash before Month 25.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$950,000	$57,000 gap	The base plan still runs below break-even.
Revenue shortfall	Year 1 revenue falls 10% to about $804,000.	$950,000	$146,000 gap	A demand miss widens the cash squeeze fast.
Fixed-cost pressure	Fixed monthly costs rise 10% to about $670,000.	$1,045,000	$152,000 gap	Overhead creep pushes the break-even line higher.
Margin pressure	Contribution margin compresses from 64.1% to 59.1%.	$1,030,000	$137,000 gap	Bronze, energy, or freight inflation can erase cushion.
Combined pressure	Revenue falls 10%, fixed costs rise 10%, and margin compresses to 59.1%.	$1,134,000	$330,000 gap	This is the cash-danger case if approvals slow.

What should you verify before you sign the lease and spend the first $820K?

Founder checklist

Don’t sign the lease until the furnace, casting pit, crane, ventilation, and safety setup are scoped, the $820K launch capex is real, and the first orders are visible. Break-even lands in Month 25, so a slow start turns fixed costs into a cash drain.

1Institutional deal$450K

Verify one full carillon system is already in play, because Year 1 assumes just 1 unit and that deal is the clearest demand signal.

2Monthly burn$29.2K/mo

Verify the lease and overhead fit a $29.2K monthly fixed load, because that burn starts on Month 1 and does not wait for production to stabilize.

3Contribution margin71% CM

Verify the full carillon still clears about 71% contribution margin after the $96.5K direct cost base and 8% variable spend, because that margin funds the shop.

4Setup rampMonth 6

Verify furnace, casting pit, crane, ventilation, and tuning gear are ready by Month 6, and hold off on extra hiring until the line can actually ship.

5Cash cushion$30K

Verify you can keep at least $30K cash in reserve, because break-even is Month 25 and payback is Month 42, so delays stretch the cash draw.

6Launch volume$1.07M

Verify the opening order book can reach $1.07M in Year 1 revenue, because the model needs enough launch volume across bells and restorations to absorb setup time.