Commercial Banking Break-Even Analysis: $142K Monthly Revenue

Fixed costs $131.8K/mo Base monthly burn

Contribution margin 93% After variable costs

Break-even revenue $141.7K/mo Monthly target

Break-even timing Month 2 Early ramp

Break-even calculator

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

Lean Base Full

Monthly revenue Use interest income and fee income here; it sets the margin available to cover overhead. $ Lower volume Higher volume Variable expenses Use funding costs, servicing, and other costs that rise with business volume. $ Lower costs Higher costs

Money available to cover fixed costs $483,584 $1,326,417 revenue - $842,833 variable expenses

Margin ratio

36%

Covers fixed costs

Yes

Fixed monthly costs Use the monthly overhead base that contribution margin has to cover. $ Lower overhead Higher overhead

Break-even chart Revenue Total costs

Which expenses are fixed, and which move with loan and deposit volume?

Cost classification

Break-even is only useful if fixed overhead stays separate from volume-linked margin drag. Rent, licenses, and first-year payroll set the monthly hurdle, while transaction fees and funding interest rise with activity.

Expense	Cost	Break-Even Treatment	Common Mistake
Branch Office Rent	Fixed	Carry $12,000 per month in the break-even base from Month 1 through Month 60.	Spreading rent across loan volume and hiding the true monthly hurdle.
Core Banking System License	Fixed	Use $15,000 per month as platform overhead before any loan or deposit volume benefit.	Treating the license like a transaction fee instead of required capacity.
Cybersecurity Subscriptions	Fixed	Include $4,500 per month as always-on operating overhead for the relevant planning range.	Delaying security spend until volume grows, which understates early break-even.
Federal Deposit Insurance Corporation Insurance Premiums	Semi-variable	Start with the $3,000 monthly premium, then review as insured deposits scale.	Modeling it as pure rent even though deposit growth can change the burden.
Utilities & Maintenance	Semi-fixed	Use the $2,500 monthly base, then step it up when facilities or operating capacity expands.	Letting it rise smoothly with revenue instead of in capacity steps.
First-Year Payroll	Fixed	Use $86,250 per month in the first operating year before adding later hires.	Forgetting that relationship and credit staff are hired ahead of revenue.
Treasury Management Transaction Costs	Variable	Model at 3.0% in the first year, declining to 2.4% by Year 5.	Putting transaction processing into fixed overhead and overstating contribution margin.
Deposit Funding Interest	Variable	Treat interest paid on deposits as margin drag tied to balances and rates.	Treating funding costs like rent instead of reducing net interest margin.

How does break-even move from lean to base to full in commercial banking?

Scenario table

Lean clears break-even with the smallest cushion, base adds solid headroom, and full has the strongest operating leverage. As scale rises, margin improves from 30% to 42%, but fixed costs also climb.

Planning assumptions only; actual results will move with credit mix, funding cost, and operating discipline.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch case	$1,110,792	$777,554	$131,750	30%	$201,488	Above break-even by about $672k a month.
Base mid-scale case	$2,163,125	$1,340,138	$200,917	38%	$622,071	Above break-even by about $1.63m a month.
Full mature case	$3,668,542	$2,127,754	$268,000	42%	$1,272,788	Above break-even by about $3.03m a month.

What breaks first if funding costs or overhead rise?

Stress test

At about $1.11 million in monthly net interest income, the plan clears the roughly $142,000 break-even point by a wide margin. The risk is not the base case; it’s slower deposit growth, more wholesale funding, and fixed costs rising before loan volume catches up.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change. Monthly net interest income stays near $1.11 million.	$142,000	$969,000 cushion	Strong base coverage, but deposit growth and funding mix still matter.
Revenue shortfall	Monthly revenue falls 10% to about $1.0 million.	$142,000	$858,000 cushion	A 10% drop still clears break-even, but the cushion shrinks fast.
Fixed-cost increase	Fixed overhead rises 10% to about $144,925 a month.	$156,000	$955,000 cushion	A 10% overhead bump raises the break-even bar without adding revenue.
Margin pressure	Interest expense rises 20%, adding about $43,000 a month in funding drag.	$188,000	$923,000 cushion	Higher funding costs squeeze spread before loan growth can catch up.
Combined pressure	Revenue falls 10%, fixed costs rise 10%, and interest expense rises 20%.	$202,000	$798,000 cushion	The plan still clears break-even, but hiring and credit risk tolerance tighten.

Is the commercial bank ready to lock in lease and platform spend before deposits prove the model?

Founder checklist

The model reaches break-even in Month 2 and pays back in 7 months, but that only works if deposits, funding mix, and loan closes stay on plan. Before you sign the lease or lock the platform, stress-test the deposit base, loan pipeline, staffing, controls, and cash cushion.

1Deposit Base$110.0M core deposits

Check that checking, savings, and CDs can fund the book before you commit to the lease; if core deposits come in light, funding costs rise and margin gets tighter.

2Loan Pipeline$185.0M Year 1

Validate demand for $75.0M commercial real estate, $40.0M working capital lines, $25.0M equipment finance, $15.0M trade finance, and $30.0M small business loans.

3Fixed Burn$131.8K/mo

Year 1 payroll is $86.25K per month and non-payroll fixed costs add $45.5K per month, so the base burn is $131.75K per month before variable costs.

4Credit Team7.0 FTE

Confirm the launch team can underwrite, sell, and service loans at this size, since treasury and compliance hires do not start until Month 13.

5Control StackMonth 13 controls

Verify the vendor stack, customer onboarding flow, treasury management capacity, cybersecurity coverage, and compliance calendar before volume ramps.

6Cash Cushion-$128.0M trough

The model shows Month 2 break-even and 7-month payback, but minimum cash still bottoms near -$128.0M in Month 60, so set a reserve plan before full ramp-up spend.