Fastener Distribution Break-Even Analysis: $90K Monthly Sales

Fixed costs $71.7K/mo Year 1 overhead

Contribution margin 78% After variable costs

Break-even revenue $91.8K/mo Cover monthly base

Break-even timing Month 1 Launch month

Break-even calculator

Use this to test whether monthly revenue can cover variable expenses and fixed monthly costs.

Lean Base Full

Monthly revenue Revenue is the cash engine that has to cover direct costs and overhead. $ Slow month Peak month Variable expenses These are direct costs that rise with each sale, like inventory, shipping, and handling. $ Low costs High costs

Money available to cover fixed costs $253,666 $317,083 revenue - $63,417 variable expenses

Margin ratio

80%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly cost base that contribution margin has to cover. $ Lean team Full team

Break-even chart Revenue Total costs

Which fastener distribution expenses are fixed, and which move with sales?

Cost classification

Break-even only works if each expense follows the right driver. In the first operating year, fixed monthly overhead and semi-fixed payroll must be covered before sales volume creates real cushion.

Expense	Cost	Break-Even Treatment	Common Mistake
Main Distribution Center Lease	Fixed	Include $18,500 per month in the monthly break-even base.	Treating rent like it falls when order volume dips.
Warehouse Utilities and Insurance	Semi-variable	Start with the $3,200 monthly base, then watch usage as warehouse activity rises.	Modeling all utilities as fixed during higher pick, pack, and ship volume.
ERP and E-commerce Hosting	Fixed	Include $2,800 per month as a stable operating platform charge.	Linking hosting spend directly to every box sold.
Digital Marketing and SEO	Semi-fixed	Use the $5,000 monthly run rate until management adds a new campaign level.	Assuming every added sales dollar needs the same marketing percentage.
Inventory Procurement Costs	Variable	Apply 12.5% of first-year revenue because purchases move with sales mix and volume.	Treating inventory buys, capital equipment, and rent as the same break-even driver.
Quality Assurance Lab Fees	Variable	Apply 2.5% of first-year revenue as product testing scales with sales activity.	Leaving inspection fees out of gross margin.
Third-Party Logistics and Shipping	Variable	Apply 4.0% of first-year revenue because freight rises with orders shipped.	Using one flat monthly freight number despite higher shipment count.
Payroll	Semi-fixed	Use about $39,500 per month in the first year, then step it up as staffing increases.	Spreading salaries across units as if each employee hour flexes perfectly with demand.

How does break-even shift from lean to full scale for a fastener distributor?

Scenario table

Break-even moves up as the business adds staff, space, and delivery support, but the contribution margin also improves as freight and fuel take a smaller share of sales. Even so, all three cases stay well above break-even.

Planning cases only; actual results will move with mix, freight, and labor.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch case	$317,083	$63,417	$71,700	80.0%	$181,966	Break-even is about $89,625/month, so this case has a wide cushion.
Base growth case	$691,250	$123,746	$107,033	82.1%	$460,470	Break-even is about $130,369/month, and revenue is far above that level.
Full scale case	$1,335,417	$210,996	$145,867	84.2%	$978,554	Break-even is about $173,239/month, so scale adds cushion but also more working capital strain.

What breaks the break-even plan for a fastener distributor?

Stress test

The base plan has a wide Year 1 cushion, but it gets squeezed fast if sales ramp slows, freight stays high, or payroll lands before revenue does. Once monthly revenue gets near $89,625, break-even turns fragile.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$89,625	$227,458 cushion	Year 1 revenue stays well above break-even.
Revenue shortfall	Year 1 monthly revenue falls 50% from plan.	$89,625	$68,917 cushion	You still clear break-even, but the sales cushion is much thinner.
Fixed-cost increase	Facility, systems, marketing, insurance, admin, and payroll rise 15%.	$103,069	$214,014 cushion	Overhead creep pushes the floor above $100k per month.
Margin pressure	Inventory procurement and QA rise to 17.0% of sales, and freight and fuel rise to 6.0%.	$93,117	$223,966 cushion	Freight and quality pressure eat into margin, but revenue still covers the floor.
Combined pressure	Monthly revenue falls 75%, fixed costs rise 15%, and variable expenses rise to 23.0% of sales.	$107,084	$27,814 gap	This slips below break-even and starts burning cash fast.

Can this fastener distributor clear break-even before you sign the lease and buy the buildout?

Founder checklist

Confirm the first-year pipeline, staffing, and cash can carry the model’s $89,625 monthly break-even revenue before you sign the lease or buy equipment. If any one of those three is weak, the $18,500 rent and payroll hit before sales do.

1Demand proof45K/8K/12K

Verify Year 1 demand for 45,000 standard boxes, 8,000 specialty components, and 12,000 ancillary kits can get you to $89,625 in monthly break-even revenue.

2Lease load$18.5K/mo

Check that the $18,500 monthly distribution center rent still works after shipping and labor, because that fixed cost starts before volume does.

3Margin stack80% CM

Test the Year 1 variable stack: 12.5% procurement, 2.5% QA, 4.0% logistics, and 1.0% fuel leave about 80% contribution before fixed costs.

4Staffing ramp8 FTE / $39.5K

Confirm Year 1 staffing really needs 8 FTE and about $39,500 a month before inventory buying, because payroll is the biggest operating drag after rent.

5Buildout capex$460K

Stage the $460,000 buildout across racking, forklifts, vans, ERP, testing gear, and IT before marketing, so the warehouse can handle launch volume.

6Cash cushion$780K

Hold enough working capital to cover the Month 2 $780,000 cash low point, and only keep the $5,000 monthly marketing line if it can bring in real accounts.