A POS systems company breaks even when gross profit from subscriptions, one-time setup fees, hardware-related sales, and support coverage equals fixed monthly costs Here’s the quick math: $549K fixed costs / 82% contribution margin = about $670K monthly revenue That assumes Year 1 variable expenses of 18%, including 5% hardware procurement, 7% payment network fees, 35% sales and marketing commissions, and 25% cloud and scalable support The model reports break-even in Month 1, but hardware-heavy sales need more revenue if procurement costs rise
Fixed costs$37.8K/mo
Base overhead
Contribution margin82%
After variable costs
Break-even revenue$46.1K/mo
Monthly target
Break-even timingMonth 1
Launch month
Break-even calculator
Use this calculator to test monthly revenue, variable expenses, and fixed costs against break-even for a POS systems business.
Money available to cover fixed costs$2,841,000
$3,000,000 revenue - $159,000 variable expenses
Margin ratio
95%
Covers fixed costs
Yes
Break-even chart Revenue Total costs
Which expenses stay fixed and which move with sales in this payment terminal business?
Cost classification
Break-even is only useful if fixed overhead is separated from revenue-linked spend. In the first operating year, the key trap is treating hardware, payment fees, and scalable support as free margin.
Expense
Cost
Break-Even Treatment
Common Mistake
CEO, lead software engineer, and sales manager payroll
Fixed
Include as monthly salary burden during the active planning range.
Moving core leadership payroll below the gross margin line.
Customer support specialist staffing
Semi-fixed
Add in steps as support coverage and customer volume rise.
Modeling support as purely variable per account.
Office rent, legal, utilities, insurance, and admin
Fixed
Use $6,200 per month before internal software licenses.
Letting small overhead items disappear from break-even math.
Internal software licenses
Fixed
Use $800 per month from Month 1 through Month 60.
Treating internal tools as one-time setup spend.
Hardware procurement
Variable
Apply 5.0% of first-year revenue, then reduce by year per the model.
Treating hardware fulfillment as free margin.
Payment network fees
Variable
Apply 7.0% of first-year revenue because fees move with processed sales.
Using subscription margin while ignoring transaction fees.
Digital marketing and sales commissions
Variable
Apply 3.5% of first-year revenue for sales-linked acquisition spend.
Counting marketing only as the annual budget.
Annual marketing budget
Semi-fixed
Plan $150,000 in the first year, or about $12,500 per month.
Assuming budget spend flexes perfectly with monthly sales.
How does break-even shift from lean to base to full POS launch?
Scenario table
Lean keeps payroll and admin tight, so break-even lands near $517K a month. Base adds Year 1 marketing, and full adds more staff plus heavier marketing, so the revenue needed to cover fixed costs climbs fast.
Planning assumptions only; break-even will move with mix, pricing, and sales pace.
Scenario
Monthly Revenue
Variable Costs
Fixed Costs
CM Ratio
Operating Profit
Break-Even Signal
Lean launch
$517K
$93K
$424K
82.0%
$0
Lowest fixed load, so the break-even bar is the easiest to clear.
Base launch
$670K
$121K
$549K
82.0%
$0
Marketing adds fixed pressure, so the cushion tightens but stays fundable.
Full rollout
$1.20M
$190K
$1.01M
84.2%
$0
Highest fixed load, so it needs the deepest sales pipeline and fastest scale.
What breaks the break-even plan if sales slow or costs creep up?
Stress test
The plan is only safe if sales hold, customer acquisition cost (CAC) stays below $100, and trial-to-paid stays above 40%. A 10% revenue miss or a 10% fixed-cost bump each opens about a $55,000 monthly gap.
Stress Case
Changed Assumption
Break-Even Revenue
Revenue Gap
Risk Signal
Current plan
No change; monthly revenue stays at $670,000 and contribution margin stays at 82%.
$670,000
$0 cushion
No cushion; CAC must stay under $100 and trial-to-paid above 40%.
Revenue shortfall
Monthly revenue drops 10% to $603,000.
$670,000
$54,000 gap
A 10% sales miss creates a monthly funding hole.
Fixed-cost pressure
Fixed costs rise 10% to $604,000.
$737,000
$55,000 gap
Higher payroll or overhead pushes break-even out of reach.
Margin pressure
Variable expenses rise from 18% to 23%.
$713,000
$33,000 gap
Payment fees above 7% or hardware over 5% squeeze margin.
Combined pressure
Revenue drops 10%, fixed costs rise 10%, and variable expenses rise to 23%.
$784,000
$140,000 gap
Lower sales, higher fees, and stretched support capacity stack fast.
What must the founder verify before committing to the POS build and hiring plan?
Founder checklist
Before you add staff, hardware, or space, test whether the funnel can reach the revenue path, the Year 1 cost base fits the cash plan, and the reserve can absorb a slow launch. Break-even in Month 1 is a checkpoint here, not proof the business is safe.
1Revenue Path$670K/mo
Verify recurring demand can climb to the monthly revenue path before you lock in bigger commitments.
2Funnel Proof5.0% / 40.0%
Verify Year 1 marketing at $150K can hold a $100 CAC with 5.0% visitor-to-trial and 40.0% trial-to-paid conversion.
3Fixed Load$42.4K/mo
Verify Year 1 payroll plus fixed overhead stays inside the cash plan before you hire beyond the first operating year.
4Margin Check82.0% CM
Verify the Year 1 variable load stays near 18.0% of revenue, with payment network fees near 7.0%, so contribution margin stays at 82.0%.
5Support Ramp1.0 to 3.0 FTE
Verify support can scale from 1.0 FTE in Year 1 to 3.0 FTE in Year 5, and delay office, warehouse, or inventory expansion until subscriptions cover the load.
6Cash Cushion$2.3M
Verify you have at least the minimum cash need of $2.3M, because the break-even month is only a checkpoint if launch timing slips.
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