Hydroponics Store Break-Even Analysis: About $25K Monthly Sales

Fixed costs $20.2K/mo Payroll plus overhead

Contribution margin 80.5% Left after variable

Break-even revenue $25.0K/mo Monthly sales target

Break-even timing Month 26 Forecast crossing point

Break-even calculator

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

Lean Base Full

Monthly revenue Sales create the margin that pays overhead. $ Low sales High sales Variable expenses Direct costs rise as sales grow. $ Low cost High cost

Money available to cover fixed costs $44,280 $54,000 revenue - $9,720 variable expenses

Margin ratio

82%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead break-even must cover. $ Low overhead High overhead

Break-even chart Revenue Total costs

Which hydroponics store expenses stay fixed, and which move with sales?

Cost classification

Break-even only works if rent, payroll, inventory, fees, and usage-based bills sit in the right buckets. Misclassifying revenue-linked inventory as overhead can make Month 26 break-even look safer than it is.

Expense	Cost	Break-Even Treatment	Common Mistake
Commercial Lease	Fixed	Use $3,500 per month in fixed overhead from Month 1 through Month 60.	Spreading rent across units and hiding the true monthly hurdle.
Payroll salaries	Semi-fixed	Model scheduled FTE steps: retail associate rises from 1.0 to 2.0 FTE, and instructor rises from 0.5 to 1.0 FTE.	Treating all payroll as variable when these roles are scheduled capacity.
Wholesale Inventory Purchases	Variable	Link directly to revenue using the model percentage, starting at 12.0% in the first year.	Treating replenishment like fixed overhead instead of sales-linked inventory.
Workshop Material Costs	Variable	Tie to workshop and sales activity using the model percentage, starting at 2.0% in the first year.	Leaving materials in fixed overhead and overstating contribution margin.
Payment Processing Fees	Variable	Apply to revenue as sales occur, starting at 2.5% in the first year.	Ignoring card fees until cash receipts run below the sales forecast.
Marketing Commissions	Variable	Apply as a revenue-linked selling expense, starting at 3.0% in the first year.	Budgeting commissions as flat spend even when sales volume changes.
Utilities	Semi-variable	Start with the $450 monthly base, then review usage if workshops and store traffic rise.	Keeping utilities fully fixed when lighting, water, and workshop use can climb.
Software, insurance, hosting, security, and supplies	Fixed	Include the modeled monthly amounts: $80, $150, $50, $60, $40, and $200.	Letting small recurring bills sit outside break-even and understating overhead.

How does break-even shift from a lean hydroponics store to a full store?

Scenario table

Higher traffic, a richer product mix, and better conversion lift revenue faster than payroll and rent. So the full format has the widest cushion, while the lean launch is the easiest to knock back below break-even.

Planning figures use model assumptions, so actual results can move with traffic, mix, staffing, and lease size.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch	$27.0k	$5.3k	$20.2k	80.5%	$1.6k	Near break-even, so small traffic dips matter.
Base case	$69.3k	$12.4k	$23.5k	82.1%	$23.4k	Clearer cushion, with break-even risk much lower.
Full store	$170.0k	$27.2k	$24.9k	84.0%	$117.8k	Strong cushion, but staffing and stock need tight control.

What breaks the hydroponics store's break-even plan?

Stress test

The store clears Year 1 break-even, but only by about $1,957 a month. A 10% traffic miss, 10% higher fixed costs, or variable expenses moving from 19.5% to 24.5% can wipe out that cushion fast.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change. Fixed costs stay at $20,155 a month and contribution margin stays at 80.5%.	$25,037	$1,957 cushion	Plan clears break-even, but the cushion is thin.
Revenue shortfall	Monthly revenue falls 10% to about $24,295.	$25,037	$742 gap	A small traffic miss puts the store below break-even.
Fixed-cost increase	Fixed costs rise 10% to about $22,171 a month.	$27,542	$548 gap	Lease creep or payroll drift can erase most of the cushion.
Margin pressure	Variable expenses rise from 19.5% to 24.5%, cutting contribution margin to 75.5%.	$26,700	$294 cushion	Discounting or freight pressure leaves almost no room.
Combined pressure	Revenue falls 10%, fixed costs rise 10%, and variable expenses rise to 24.5%.	$75,295	$51,000 gap	Weak weekday traffic and cost creep can push the month deep negative.

What must you verify before you sign the lease and open the store?

Founder checklist

Don’t commit until the traffic, basket size, and cost load all clear the Year 1 break-even math. For this store, the gate is whether monthly sales can reach about $25.0K without draining cash before Month 25.

1Demand test$216/order

Verify 1,560 monthly visitors at 8.0% conversion can hold a roughly $216 average order, because that traffic mix is what gets you near break-even.

2Break-even sales$25.0K/mo

Check that the lease and local foot traffic can support about $25.0K in monthly sales, since that is the Year 1 break-even revenue at current margin.

3Fixed load$20.2K/mo

Make sure rent, utilities, insurance, software, supplies, security, and payroll stay near $20.2K a month, or breakeven shifts up fast.

4Margin guard80.5% CM

Keep wholesale inventory at 12.0%, workshop materials at 2.0%, processing at 2.5%, and marketing commissions at 3.0%, so contribution stays at 80.5% before discounts.

5Staffing ramp3.5 FTE

Verify the opening team can cover retail, workshops, and owner oversight with 3.5 FTE; if onboarding does not lift conversion or repeat orders, delay added headcount.

6Cash cushion$533K min

Hold enough cash to reach the Month 25 low point and fund the $40K build-out, $15K fixtures, $25K inventory, $5K POS setup, $3K security, $4K office equipment, $8K workshop setup, and $2.5K signage.