Construction Software Break-Even Point: About $57k Monthly Revenue

Fixed costs $35.1K/mo Year 1 base

Contribution margin 83% After variable costs

Break-even revenue $42.3K/mo Monthly target

Break-even timing Month 9 Model breakeven

Break-even calculator

See how monthly revenue, variable expenses, and fixed costs line up against break-even for a construction software business.

Lean Base Full

Monthly revenue Revenue is the top line that funds contribution margin after direct costs. $ Lower sales Higher sales Variable expenses Use direct costs that rise with revenue, like cloud hosting, API use, commissions, and variable marketing. $ Lower costs Higher costs

Money available to cover fixed costs $87,885 $105,000 revenue - $17,115 variable expenses

Margin ratio

84%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly cost base break-even must cover, including salaries and overhead. $ Lower overhead Higher overhead

Break-even chart Revenue Total costs

Which construction software expenses are fixed, variable, semi-variable, or semi-fixed for break-even?

Cost classification

Break-even works only if recurring overhead stays separate from usage costs and launch setup. Here’s the quick math: fixed monthly overhead includes $6,800 before payroll, while hosting, APIs, commissions, and variable marketing move with revenue.

Expense	Cost	Break-Even Treatment	Common Mistake
Office rent	Fixed	Use $3,500 per month in the fixed overhead base from Month 1 through Month 60.	Treating rent as if it rises with customers.
Utilities and internet	Fixed	Use $500 per month as stable operating overhead within the modeled planning range.	Putting basic utilities into variable margin.
Professional services	Fixed	Use $1,500 per month for legal and accounting in fixed overhead.	Mixing recurring advisory fees with launch setup spending.
Internal software subscriptions	Fixed	Use $800 per month as recurring overhead needed to run the team.	Classifying team software as customer usage expense.
CEO, product lead, and developer payroll	Fixed	Include planned salaries as fixed operating capacity, such as the CEO at $150,000 annually and senior developer at $120,000 annually.	Leaving founder and product payroll below the break-even line.
Cloud hosting and third-party APIs	Variable	Apply 4.0% of revenue for hosting and 2.0% for APIs in the first year, then use the modeled annual percentages.	Budgeting usage charges as flat overhead.
Sales commissions and variable marketing	Variable	Apply 6.0% of revenue for commissions and 5.0% for variable marketing in the first year, then use the modeled annual percentages.	Counting acquisition spend twice with CAC and revenue percentages.
Customer success salaries	Semi-fixed	Add capacity in steps starting Month 13, when the customer success manager begins at 0.5 FTE.	Assuming support labor scales smoothly with each new customer.

How does break-even shift from lean to base to full in a construction software plan?

Scenario table

More staff lifts fixed cost faster than margin improves, so break-even revenue rises as you move from founder-led sales to a full team. The core test is simple: revenue has to cover payroll before you add support and sales roles.

Scenario figures are planning assumptions, not guarantees, and fixed costs are shown as monthly equivalents.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean founder-led launch	$47.8k	$8.1k	$39.7k	83.0%	$0	Revenue barely covers the launch payroll, so growth must stay lean.
Base sales and support buildout	$81.0k	$13.2k	$67.8k	83.7%	$0	This is the first standard sales motion, but the cushion is still thin.
Full scaled recurring revenue team	$188.8k	$25.5k	$163.3k	86.5%	$0	The plan only works if recurring revenue grows faster than payroll.

What breaks the break-even plan if growth slows or payroll comes early?

Stress test

Year 1 break-even sits at $574k on $476k of fixed cost and an 83% contribution margin. If revenue slips 20% to $459k, or Year 2 fixed costs arrive early, the gap opens fast.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	Year 1 fixed costs stay at $476k.	$574k	$0 cushion	You have no room for a miss.
Revenue shortfall	Revenue falls 20% to $459k.	$574k	$115k gap	That is a six-figure top-line miss.
Fixed-cost pressure	Year 2 fixed costs rise to $814k.	$972k	$398k gap	Hiring before scale pushes break-even up fast.
Margin pressure	Support load rises while revenue lands at $459k.	$574k	$95k gap	Slower onboarding eats the contribution cushion.
Combined pressure	Revenue falls 20% and Year 2 fixed costs hit $814k.	$972k	$430k gap	That mix can outrun cash before scale arrives.

What should a construction software founder verify before the first big spend?

Founder checklist

Use the first-year pipeline, funnel, and price mix to test this model before you add staff or commit to office and hardware spend. The numbers only work if you can reach about 314 active customers and keep cash above the $758K low in Month 8.

1Pipeline proof500 buyers

With a $150K Year 1 marketing budget and $300 CAC, the plan buys about 500 paid customers, so verify the lead source can actually support that volume.

2Trial funnel1.0% / 50K visits

A 5.0% visitor-to-trial rate and 20.0% trial-to-paid rate turn into 1.0% visitor-to-paid, so you need about 50,000 visitors to land 500 paid accounts.

3Price cover314 customers

At the Year 1 mix and subscription prices, 314 active customers produce about $47.6K in monthly recurring revenue, or roughly $571K a year, which sits near the $574K break-even line.

4Fixed burn$35.1K/mo

Year 1 variable costs take about 17% of revenue, so the business keeps roughly 83% before fixed payroll and office overhead; that cushion has to cover the $35.1K monthly burn.

5Support rampMonth 13

Customer success starts in Month 13, so prove onboarding and issue handling can stay lean until then; if support grows too early, margin slips fast.

6Cash runway$758K / Month 8

Cash bottoms at $758K in Month 8, before breakeven in Month 9, so protect that reserve before the $82K launch spend on office setup, licenses, hardware, testing, content, and legal setup.