You need about $602k in monthly revenue to break even on the Year 1 accounting software cost base Here’s the quick math: $511k fixed monthly costs divided by an 85% contribution margin equals $602k That means roughly 778 active paying customers at $7740 weighted monthly revenue per account, or about 912 customers if you count the $6600 subscription revenue only The core model reaches break-even in Month 9, but it still shows Year 1 EBITDA of -$129k and a minimum cash need of $746k
Fixed costs$38.6K/mo
Monthly base
Contribution margin85%
After variable costs
Break-even revenue$45.5K/mo
Monthly target
Break-even timingMonth 9
Forecast breakeven
Break-even calculator
The model reaches break-even around Month 9, so this calculator checks whether monthly revenue can clear variable costs and the fixed cost base.
Money available to cover fixed costs$27,900
$32,800 revenue - $4,900 variable expenses
Margin ratio
85%
Covers fixed costs
$10,700 short
Break-even chart Revenue Total costs
Which expenses are fixed and which move with sales in this break-even model?
Cost classification
Break-even gets noisy when fixed payroll, rent, and base tools are mixed with revenue-linked fees. Put each dollar in the right monthly bucket so Month 9 break-even is tested against real contribution margin, not blended overhead.
Expense
Cost
Break-Even Treatment
Common Mistake
Office Rent
Fixed
Include $3,000 every month in operating overhead.
Tying rent to subscriber count.
CEO/Founder
Fixed
Include the $150,000 annual salary if market salary is being modeled.
Leaving founder pay out of break-even.
Cloud Hosting & Data Security
Variable
Apply the revenue percentage, starting at 6.0% in the first year.
Burying hosting inside overhead.
Third-Party Software Licenses
Variable
Apply the revenue percentage, starting at 3.0% in the first year.
Treating all licenses as fixed subscriptions.
Affiliate Commissions
Variable
Deduct from revenue contribution, starting at 4.0% in the first year.
Counting gross revenue without commissions.
Payment Processing Fees
Variable
Include in every paid plan, starting at 2.0% of revenue.
Forgetting card fees on subscriptions.
Customer Support Specialist
Semi-fixed
Add support capacity in staffing steps, starting at $55,000 annual salary and 0.5 FTE.
Waiting until tickets break service quality.
R&D Software Licenses Base
Fixed
Include $1,200 every month as base operating overhead.
Modeling the base license as usage-based.
How does break-even shift from lean launch to full scale in accounting software?
Scenario table
Fixed payroll and marketing rise faster than unit costs fall, so break-even revenue still climbs as the company scales. The margin improves from 85.0% to 89.4%, but the monthly break-even point moves from $60.2k to $153.9k.
Planning assumptions only. These figures are model estimates, not a promise that revenue, costs, or customer counts will land here.
Scenario
Monthly Revenue
Variable Costs
Fixed Costs
CM Ratio
Operating Profit
Break-Even Signal
Lean launch
$60.2k
$9.0k
$51.1k
85.0%
$0
About 778 customers keeps launch just at break-even.
Base growth
$110.2k
$14.1k
$96.1k
87.2%
$0
About 1,200 customers gives a cleaner break-even, but the cushion is still thin.
Full scale
$153.9k
$16.3k
$137.6k
89.4%
$0
About 1,350 customers starts to build a wider cushion.
What breaks the break-even plan for this accounting software?
Stress test
The base case sits near $602k in monthly revenue against about $511k of fixed costs, so the cushion is thin. A sales miss, higher overhead, or a 1-point margin dip can push break-even out; watch trial-to-paid conversion, CAC, and support load.
Stress Case
Changed Assumption
Break-Even Revenue
Revenue Gap
Risk Signal
Current plan
No change.
$602k
$0 cushion
Break-even only; no cushion.
Revenue shortfall
Monthly revenue lands 10% below the base plan.
$602k
$60k gap
A 10% miss wipes out the cushion fast.
Fixed-cost pressure
Monthly fixed costs rise by $10k.
$613k
$11k gap
Small overhead adds move break-even fast.
Margin pressure
Variable expense rises from 15% to 16% of revenue.
$609k
$7k gap
A 1-point margin slip needs more top-line.
Combined pressure
Year 2 fixed costs of $727k pair with Year 1 margin.
$856k
$254k gap
Watch sub-25% trial-to-paid, $120 CAC, and support above 0.5 FTE.
Before you commit to the Year 1 spend, what should you verify so this accounting software model can reach break-even?
Founder checklist
Test the funnel, revenue per customer, cost load, and cash before you push harder on spend. With Year 1 EBITDA at -$129K, break-even in Month 9, and a $746K minimum cash need, the model only works if the early numbers hold.
1Funnel math$120 CAC
Verify visitors-to-trial at 3.0% and trial-to-paid at 25.0% before you raise the $150,000 Year 1 marketing budget, because that spend only works if the funnel keeps producing paid accounts.
2Revenue mix$77.40/mo
Confirm an active customer averages $66.00 in subscription revenue and $77.40 in monthly revenue before one-time fees, because that is the cash per account that helps cover the burn.
3Variable load15.0% CM
Keep cloud hosting and data security at 6.0%, software licenses at 3.0%, affiliate commissions at 4.0%, and payment fees at 2.0%, so the 85.0% contribution margin does not get squeezed.
4Operating load$38.6K/mo
Check the monthly operating load at about $38.6K once you count the $7,600 of base overhead and the planned Year 1 payroll, including the CEO/Founder at $150,000, because true break-even has to absorb all of it.
5Support ramp0.5 FTE
Hold support at 0.5 FTE in Year 1 and do not hire ahead until onboarding stays smooth, because weak setup or slow help will push service load past the team and delay break-even.
6Cash runway$746K
Keep at least the $746,000 minimum cash buffer through Month 9, and pause platform, marketing, or hiring spend if onboarding breaks or refunds rise, because the business is still cash negative before break-even.
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