Drip Irrigation Installation Break-Even Plan: $27K Monthly Sales

Fixed costs $18.6K/mo Overhead plus payroll

Contribution margin 73% After variable costs

Break-even revenue $25.5K/mo Monthly target

Break-even timing Month 4 Model crosses

Break-even calculator

Use this calculator to test how monthly revenue, variable costs, and fixed overhead line up with break-even for a drip irrigation installation business.

Lean Base Full

Monthly revenue Revenue is the top line that leaves room for direct costs and overhead. $ Low sales Busy month Variable expenses These are direct costs like crew wages, consumables, fuel, hardware, and components that rise with each job. $ Low costs High costs

Money available to cover fixed costs $130,000 $180,000 revenue - $50,000 variable expenses

Margin ratio

72%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead your contribution margin has to cover. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which drip irrigation installation expenses are fixed, and which move with sales?

Cost classification

Break-even is only useful if fixed overhead and sales-linked costs sit in the right buckets. Here, fixed monthly overhead sets the revenue floor, while materials at 20% and variable field costs at 7% reduce contribution on every job.

Expense	Cost	Break-Even Treatment	Common Mistake
Office Rent	Fixed	Add $2,500 per month to the overhead that must be covered before profit.	Treating rent as job-level overhead and hiding the true monthly revenue floor.
Liability Insurance	Fixed	Add $400 per month to fixed operating overhead from Month 1 through Month 60.	Leaving insurance out because it does not attach to one specific installation.
Software Licenses (CRM, Design)	Fixed	Add $350 per month to the recurring overhead base used in break-even revenue.	Counting setup fees but missing the monthly subscription load.
Core Salaried Payroll	Fixed	Include recurring salary overhead for the owner, designer, and first-year administrative coverage.	Modeling only field labor and forgetting the office team needed to sell, design, and schedule work.
Drip System Hardware	Variable	Deduct 15% of revenue before calculating contribution margin.	Treating materials markup as profit before labor, fuel, and overhead are covered.
Specialized Components	Variable	Deduct 5% of revenue for emitters, controllers, and other job-linked parts.	Rolling specialty parts into gross margin without checking job-level usage.
Installation Crew Hourly Wages	Variable	Deduct 4% of revenue as field labor that rises with job volume.	Calling all payroll fixed and overstating margin on each added installation.
Field Technician Hiring Steps	Semi-fixed	Add capacity in salary blocks as the model moves from 1 FTE to 4 FTEs over time.	Spreading technician salaries as a smooth sales percentage instead of step changes.

How does break-even move from a lean install mix to base and full capacity?

Scenario table

A Year 1 install ticket is $3,800, and variable costs run about 27%, so the work carries a 73% contribution margin. With fixed monthly costs near $19,850, the base case clears break-even; the lean case still falls short.

Planning assumptions only; actual break-even will move with pricing, crew speed, and customer mix.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean installation plan	$22,800	$6,156	$19,850	73%	-$3,206	Still below break-even; cash burn remains.
Base installation plan	$30,400	$8,208	$19,850	73%	$2,342	Sits just above break-even with a small cushion.
Full-capacity mixed service plan	$TBD	$TBD	$19,850	TBD	$TBD	Set this after crew capacity is confirmed; use maintenance 15 hours × $80, upgrades 10 hours × $90, and repairs 25 hours × $110.

What pushes a drip irrigation installation business below break-even?

Stress test

The plan clears break-even only if bookings hold and input costs stay near plan. Fewer installs, higher hardware costs, labor overruns, longer drive times, or payroll added too early will push it under fast.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change; fixed costs stay at $19,850 and variable expenses stay at 27%.	$27,200	$0 gap	You are right on the line, so small misses matter.
Revenue shortfall	Bookings land 10% below break-even revenue.	$27,200	$2,000 gap	A modest miss quickly eats the cushion.
Fixed-cost increase	Fixed costs rise 10% from $19,850 to about $21,835.	$29,900	$2,700 gap	Overhead growth needs more booked work to keep pace.
Margin pressure	Variable expenses rise from 27% to 32% of revenue.	$29,200	$2,000 gap	Higher hardware, labor, or fuel costs tighten the model.
Combined pressure	Fixed costs rise 10% and variable expenses rise to 32%.	$32,100	$4,900 gap	If costs move together, break-even jumps fast.

Can you still hit Month 4 break-even before buying Truck 2?

Founder checklist

Use this screen before you commit cash to vehicles, hiring, tools, or marketing. If any one of these checks fails, the break-even date can slip fast.

1Break-EvenMonth 4

Do not buy Truck 2 at $40,000 until the model still reaches break-even by Month 4, because that vehicle only helps if booked work is already carrying the setup load.

2Crew Ramp8 jobs/mo

Use the 40-hour install plan to prove the owner and first crew can keep about 8 installation-equivalent jobs a month moving inside the service radius, and delay extra payroll if lead flow is not repeatable.

3Cash Cushion$807K

Protect cash before the full $125,500 setup spend, and make sure you still have the Month 2 minimum cash cushion of $807K when the early bills hit.

4Margin Check73% CM

Verify access to drip system hardware and specialized components before fixed-price quotes, because Year 1 direct job costs are about 27% and contribution margin (CM, profit left after direct costs) is about 73%.

5Base Overhead$4.85K/mo

Confirm the business can carry about $4,850 a month in fixed overhead, including $400 liability insurance, $600 fleet insurance, and $350 software, before you add more staff.

6Launch Demand$300 CAC

Test whether customer acquisition cost (CAC, what you pay to win one customer) really holds near $300 before scaling the $15,000 Year 1 marketing budget.