SaaS Startup Break-Even Analysis: $565k MRR By Month 19

Fixed costs $5.7K/mo Core overhead

Contribution margin 84% After variable load

Break-even revenue $6.8K/mo Monthly target

Break-even timing Month 19 Model break point

Break-even calculator

Use this calculator to test monthly revenue against variable expenses and the fixed cost base that break-even has to cover.

Lean Base Full

Monthly revenue Revenue is the top line that creates room for fixed costs after direct expenses. $ Low revenue High revenue Variable expenses These are the costs that move with sales, like hosting, payment fees, and sales support. $ Low costs High costs

Money available to cover fixed costs $41,800 $50,000 revenue - $8,200 variable expenses

Margin ratio

84%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly cost base that contribution margin has to cover. $ Low fixed High fixed

Break-even chart Revenue Total costs

Which expenses are fixed and which move with sales in this subscription software startup?

Cost classification

Break-even is reliable only when fixed burn stays separate from contribution margin, the cash left after revenue-linked fees. Use $5,700/month of recurring fixed overhead, and keep the $58,000 setup spend out of operating break-even.

Expense	Cost	Break-Even Treatment	Common Mistake
Recurring fixed overhead	Fixed	Use $5,700/month: office rent $2,500, legal and accounting $1,000, internal software $800, cybersecurity $700, utilities $300, and insurance $400.	Spreading steady monthly overhead across customers as if it rises with paid accounts.
Salaries	Semi-fixed	Model payroll by full-time equivalent steps, from $33,125/month in the first year to $77,708/month in the fifth year.	Treating payroll as a clean percentage of revenue and hiding hiring cliffs.
Planned marketing budget	Semi-fixed	Use the planned annual spend: $100,000 in the first year, rising to $1,200,000 in the fifth year.	Using customer acquisition cost as if every dollar flexes directly with each sale.
Cloud Infrastructure & Hosting Fees	Variable	Reduce contribution margin by 6.0% of revenue in the first year, improving to 4.0% in the fifth year.	Putting all hosting spend in fixed burn and overstating margin on each new customer.
Payment Processing Fees	Variable	Apply 2.5% of revenue in the first year, declining to 2.0% in the fifth year.	Ignoring card fees until cash collections are lower than the break-even model.
Sales Commissions	Variable	Apply 5.0% of revenue in the first year, falling to 3.0% by the fifth year.	Counting commission only in sales payroll instead of reducing deal-level contribution.
Customer Support Tools & Licenses	Variable	Apply 3.0% of revenue in the first year, improving to 2.2% in the fifth year.	Grouping support tooling with fixed internal software and missing usage-linked support drag.

How does break-even shift from a lean launch to a fuller SaaS build?

Scenario table

As fixed burn rises from $472k to $1.0m, break-even revenue also climbs, even though margin improves from 83.5% to 86.1%. So growth has to outpace headcount and overhead.

Planning assumptions only; these are model outputs, not guarantees.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean Year 1 launch	$565k	$93k	$472k	83.5%	$0	Right on the line; any slip turns into burn.
Base Year 2 scale-up	$839k	$128k	$712k	84.8%	$0	At break-even with a thin cushion; keep CAC and churn tight.
Full Year 3 build-out	$1.2m	$167k	$1.0m	86.1%	$0	Break-even is covered; extra revenue can fund growth.

What breaks the break-even plan for this SaaS startup?

Stress test

The base plan breaks even at about $565k a month, but there’s little room for error. A 20% revenue miss, heavier fixed burn, or weaker margin can push the hurdle into the $800k to $1.13M range before Month 19.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$565k/mo	$0 cushion	No cushion; Month 19 is the line.
Revenue shortfall	Revenue lands 20% below the Year 1 break-even level.	$565k/mo	$94k gap	A smaller top line can tip the model negative fast.
Fixed-cost pressure	Year 2 fixed burn replaces the Year 1 burn.	$839k/mo	$274k gap	Higher payroll and overhead lift the hurdle sharply.
Margin pressure	Year 1 variable costs stay in place while Year 2 fixed burn holds.	$852k/mo	$287k gap	Cloud, payment, sales, and support costs eat more of each dollar.
Combined pressure	Revenue is 20% below plan, Year 2 fixed burn hits, and variable costs stay high.	$1.13M/mo	$674k gap	Slower trials, CAC above $150, and churn before Month 19 make funding hard.

Is this SaaS ready for the first fixed-cost step-up?

Founder checklist

Do not add more fixed spend until the funnel, CAC, and ARPU hold together. The model only looks ready if Year 1 trial flow, $150 CAC, and $74.60 monthly ARPU can support the $38.8K monthly fixed load and the $452K cash floor at Month 19.

1Launch funnel8.0% → 15.0%

Keep visitor-to-trial near 8.0% and trial-to-paid near 15.0%, because that is the first test of launch demand before you lock in more headcount or ad spend.

2ARPU mix$74.60/mo

Check that the Year 1 mix of 50% Basic, 40% Pro, and 10% Enterprise really produces about $74.60 in monthly recurring ARPU per customer before you hire ahead of demand.

3CAC cap$150

Do not raise paid marketing unless CAC stays at or below $150, or the Year 1 $100,000 budget will buy less volume than the model needs.

4Margin load83.5% CM

Verify cloud, payment, sales commission, and support costs stay at about 16.5% of revenue so the business keeps an 83.5% contribution margin.

5Payroll load$38.8K/mo

Your fixed load is about $38.8K a month in Year 1, and payroll rises from $397.5K to $535.5K annually in Year 2, so only approve hiring if growth can absorb that step-up.

6Runway cap$452K / $58K

Keep the $58K one-time setup spend separate from break-even math, and protect the $452K cash floor through Month 19 before you scale cloud and support beyond the Year 1 9.0% combined load.