Merchant Services Break-Even Analysis: $816k Monthly Revenue

Fixed costs $48.8K/mo Overhead plus payroll

Contribution margin 95.5% After variable costs

Break-even revenue $51.1K/mo Cover fixed base

Break-even timing Month 9 Modeled crossover

Break-even calculator

See how monthly revenue clears variable costs and the fixed monthly cost base.

Lean Base Full

Monthly revenue Revenue sets the pool that pays direct costs and fixed overhead. $ Low sales High sales Variable expenses These are direct costs that rise as payment volume and service load grow. $ Low costs High costs

Money available to cover fixed costs $80,000 $125,000 revenue - $45,000 variable expenses

Margin ratio

64%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly cost base contribution margin must cover. $ Light overhead Heavy overhead

Break-even chart Revenue Total costs

Which expenses stay fixed, and which move with sales volume in this payment acceptance business?

Cost classification

Break-even works only if rent-like overhead stays separate from transaction-linked fees. In this model, Month 9 break-even depends on treating network, gateway, support, and fraud work as volume-driven, not fixed overhead.

Expense	Cost	Break-Even Treatment	Common Mistake
Office Rent	Fixed	Include $3,500 per month from Month 1 through Month 60 in fixed overhead.	Letting rent rise with payment volume instead of keeping it flat within the planning range.
Core Year 1 Payroll: CEO, CTO, Lead Software Engineer	Fixed	Include $480,000 per year, or $40,000 per month, before break-even contribution.	Excluding founder and engineering payroll from fixed overhead, which makes Month 9 break-even look too easy.
Interchange & Network Fees	Variable	Apply 1.80% of processed volume in the first year, stepping down to 1.60% by year five.	Treating card network charges or residual payouts like rent instead of as a direct drag on each transaction.
Payment Gateway Fees	Variable	Apply 0.50% of processed volume in the first year, falling to 0.40% by year five.	Modeling gateway usage as a fixed software bill when it scales with transaction volume.
Customer Support: Transaction Volume Based	Variable	Apply 1.50% of transaction volume in the first year, improving to 1.00% by year five.	Counting all support work as fixed headcount even when ticket load follows transactions.
Fraud & Chargeback Management	Variable	Apply 0.70% of transaction volume in the first year, improving to 0.50% by year five.	Treating chargeback work as overhead instead of a sales-volume expense.
IT Infrastructure & Security	Semi-fixed	Start with the $1,500 monthly base, then plan step-ups when platform volume requires more capacity.	Assuming infrastructure stays flat forever after volume grows past the current setup.

How does break-even shift from lean to base to full scale in this merchant services model?

Scenario table

Here’s the quick math: Year 1 revenue is about $65k a month, variable costs stay near 4.5%, and the model still posts a $186k loss. Break-even lands around Month 9, then Year 2 and Year 3 add cushion.

Planning case figures use model assumptions, so mix, CAC, and spend can move them.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch case	$65k	$35k	$936k	95.5%	$-186k	Still below break-even until Month 9.
Base operating case	$211k	$108k	$1.71M	95.7%	$714k	Break-even is reached and cash turns positive.
Full scale case	$495k	$241k	$2.40M	96.0%	$3.31M	Scale gives a wide cushion above break-even.

What breaks this merchant services break-even plan first?

Stress test

The plan breaks first on volume, then on overhead. A 10% revenue miss or a 10% rise in fixed costs pushes break-even up fast, and merchant-specific margin pressure from residual payouts or chargebacks can erase the cushion.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$816k	$0 cushion	At plan, there is no cushion.
Revenue shortfall	Revenue runs 10% below plan.	$816k	$78k gap	Lower processing volume creates a fast monthly loss.
Fixed-cost pressure	Fixed monthly costs rise 10% to $858k.	$899k	$83k gap	More headcount or overhead pushes break-even out.
Margin pressure	Revenue-linked expenses rise from 45% to 55%.	$825k	$9k gap	Residual payouts, chargebacks, or support backlog compress margin.
Combined pressure	Revenue falls 10%, fixed costs rise 10%, and margin slips to 94.5%.	$832k	$16k gap	Three small hits at once leave almost no cushion.

What should you verify before you scale hiring and paid spend?

Founder checklist

Before you scale hiring or paid spend, make sure the processor setup, underwriting rules, and cash buffer can support Month 9 break-even. The model needs about $387k of cash through Month 9, and the fixed base is $8.8k a month, so early control matters.

1Go-live setupMonth 1

Confirm processor or sponsor setup and underwriting rules for small retail, online store, and service provider merchants before go-live.

2CAC control$20 / $500

Validate buyer CAC at $20 and seller CAC at $500 before scaling paid channels, or acquisition spend will outrun returns.

3Seller mix40/35/25

Keep Year 1 seller mix near 40% small retail, 35% online store, and 25% service provider so the model holds.

4Fraud rate0.70%

Test fraud and chargeback handling against the 0.70% Year 1 assumption, because losses hit margin fast in payments.

5Cash runway$387K

Fund the $387k minimum cash need through Month 9, since breakeven lands in Month 9 and payback takes 25 months.

6Fixed base$8.8K/mo

Lock compliance, accounting, insurance, and IT security at the $8.8k monthly fixed base, and add sales or support hires only when pipeline and ticket volume justify them.