Water Well Drilling Break-Even Analysis: $287K Monthly Revenue

Fixed costs $19.3K/mo Monthly base

Contribution margin 72% After direct costs

Break-even revenue $27.0K/mo Revenue target

Break-even timing Month 3 Launch quarter

Break-even calculator

Use this calculator to test how monthly revenue, variable expenses, and fixed costs set the break-even point for a water well drilling business.

Lean Base Full

Monthly revenue Revenue sets the pool left to cover direct costs and overhead. $ Slow month Peak month Variable expenses Direct project costs like materials, fuel, and project insurance rise as revenue rises. $ Low direct cost High direct cost

Money available to cover fixed costs $87,000 $120,000 revenue - $33,000 variable expenses

Margin ratio

72%

Covers fixed costs

Yes

Fixed monthly costs Overhead like rent, wages, and admin costs must be covered every month. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which water well drilling expenses are fixed, and which move with job volume?

Cost classification

Break-even gets reliable only when the monthly floor is separated from job-linked spending. Here, rent, leases, and core crew set the floor; materials, fuel, repairs, and project insurance move as drilling volume changes.

Expense	Cost	Break-Even Treatment	Common Mistake
Office rent	Fixed	Include $1,500 per month in the break-even floor from Month 1 through Month 60.	Spreading rent across jobs and making break-even look better in slow months.
Vehicle lease payments	Fixed	Include $1,200 per month before any job margin is counted.	Treating the lease like a per-job truck charge instead of a monthly obligation.
Year 1 wage plan	Fixed	Model owner, driller, and half-time admin wages at about $14,792 per month.	Leaving owner pay out of break-even and overstating operating profit.
Materials & components	Variable	Apply 17.0% of revenue in the first year, falling to 13.0% by the fifth year.	Using one flat dollar amount per well when casing, pipe, and pump scope vary.
Direct project fuel & consumables	Variable	Apply 7.0% of revenue in the first year, falling to 5.0% by the fifth year.	Treating all fuel as fixed when longer mobilization raises job expense.
Equipment maintenance & repairs	Semi-variable	Start with 3.0% of revenue in the first year, then adjust for heavy-use repair spikes.	Treating rig repairs as purely fixed when they rise with drilling activity.
Project-specific insurance	Variable	Apply 1.5% of revenue in the first year, falling to 1.0% by the fifth year.	Putting job-specific coverage into general insurance and hiding margin drag.
Crew and service technician additions	Semi-fixed	Increase the monthly floor when technician headcount steps up in later years.	Modeling labor as smooth growth instead of capacity jumps tied to hiring.

How does break-even shift from a lean drilling month to a full month for this business?

Scenario table

A lean month leaves a $5,135 operating gap, the base month lands at break-even, and a full month creates a $10,271 cushion. The key test is whether monthly contribution clears the $20,542 fixed load.

Planning cases only: these figures use model assumptions and do not include debt service, taxes, or capex cash outlays.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean drilling month	$21,548	$15,407	$20,542	71.5%	-$5,135	Still below break-even; overhead is not covered.
Base operating month	$28,730	$8,188	$20,542	71.5%	$0	At break-even; contribution fully covers fixed costs.
Full drilling month	$43,095	$12,282	$20,542	71.5%	$10,271	Above break-even; the monthly cushion is strong.

What breaks the break-even plan for a water well drilling business?

Stress test

The plan breaks when signed wells slow, mobilization runs long, or fuel, casing, and repairs push costs up. At the base case, break-even sits near $28,730 a month, so a 20% revenue miss creates a meaningful gap.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change from the base plan.	$28,730	$0 gap	Break-even is met, but the cushion is thin.
Revenue shortfall	Revenue lands 20% below break-even.	$28,730	$5,746 gap	Fewer signed wells or longer mobilization can hit cash fast.
Fixed-cost increase	Fixed monthly costs rise 10% to $22,596.	$31,603	$2,873 gap	Higher payroll, truck, and office costs widen the gap.
Margin pressure	Variable load rises to 33.5%, cutting margin to 66.5%.	$30,890	$2,160 gap	Fuel, casing overruns, and repair spikes squeeze contribution.
Combined pressure	Fixed costs rise 10% and margin falls to 66.5%.	$33,979	$5,249 gap	Slow bookings plus cost creep can break the plan.

What must be true before a water well drilling founder buys the first rig?

Founder checklist

Don’t lock in the rig, truck, or crew until the math says Year 1 work can cover the $20.5K monthly fixed load and the Month 4 cash dip. The gate is simple: enough booked jobs, enough margin, and enough reserve.

1Demand proof$15K / $750 CAC

Verify booked leads can support the Year 1 marketing spend and acquisition cost before you commit to the first rig purchase.

2Rig ready$350K

Confirm rig availability and crew coverage before the primary rig spend, because the machine and the lead driller have to start together.

3Truck timing$60K

Check that the first service truck lands when field jobs start, so hauling and travel do not choke early capacity.

4Stock ready$40K

Stage the pump stock plus casing and pipe before launch, since missing parts turn paid jobs into idle days.

5Margin check71.5% CM

Year 1 direct cost rates leave about 71.5% contribution margin, which has to clear the $20.5K monthly fixed load before owner draws.

6Cash reserve$541K / Month 4

Hold at least $541K through Month 4 and keep the $250K secondary rig off the table until backlog proves one rig is not enough.