Swimming Lessons Break-Even Revenue: About $65K/Month

Fixed costs $20.3K True fixed base

Contribution margin 83.5% After variable costs

Break-even revenue $24.2K Monthly target

Break-even timing Month 1 Launch break-even

Break-even calculator

Use this to test whether monthly lesson revenue clears variable costs and the fixed cost base.

Lean Base Full

Monthly revenue Revenue is the cash available to cover direct costs and overhead. $ Low revenue High revenue Variable expenses These costs rise with lessons sold and booked. $ Low costs High costs

Money available to cover fixed costs $95,300 $112,250 revenue - $16,950 variable expenses

Margin ratio

85%

Covers fixed costs

Yes

Fixed monthly costs Payroll and facility overhead must be covered each month. $ Lean costs Heavier costs

Break-even chart Revenue Total costs

Which swimming lesson expenses are fixed, and which move with sales?

Cost classification

Your break-even model is only as good as this split: rent stays fixed, card fees move with tuition, and instructor payroll steps up with enrollment. The big miss is treating all payroll as fixed when full-time equivalents rise with class volume.

Expense	Cost	Break-Even Treatment	Common Mistake
Facility Lease	Fixed	Use $15,000 per month in the fixed overhead base.	Spreading lease expense per student and hiding occupancy risk.
Base Utilities	Semi-fixed	Start with $4,000 per month, then review as pool hours expand.	Treating all utilities as purely variable with lesson revenue.
Lead Instructor Manager	Semi-fixed	Model $75,000 annual salary as stable until management capacity changes.	Allocating the full manager salary to each lesson sold.
Senior Instructor and Junior Instructor Payroll	Semi-variable	Scale payroll with planned FTE growth as enrollment rises.	Treating all instructor payroll as fixed when staffing grows with demand.
Marketing & Advertising	Variable	Model as 8.0% of revenue in the first year, declining in later years.	Locking marketing as a flat monthly spend despite sales-driven campaigns.
Payment Processing Fees	Variable	Apply 2.5% of revenue across each forecast year.	Forgetting card fees when calculating contribution margin.
Pool Chemicals & Supplies	Variable	Use 4.0% of revenue in the first year, then lower rates as modeled.	Putting chemicals into fixed overhead instead of usage-linked expense.
Teaching Equipment Consumables	Variable	Use 2.0% of revenue in the first year, tapering in later years.	Mixing consumables with one-time teaching equipment purchases.

How does break-even change across lean, base, and full swimming lesson scenarios?

Scenario table

Break-even gets easier as occupancy rises because fixed pool and staffing costs spread across more lessons. Lean tests demand, base proves instructor use, and full gives the widest cushion.

Planning assumptions only; actual break-even will move with enrollment mix, staffing, and month-to-month demand.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean demand test	$64.2k	$10.6k	$45.5k	83.5%	$8.1k	Above break-even, but the cushion is thin.
Base utilization case	$124.8k	$16.8k	$65.5k	86.5%	$42.4k	Strong coverage; instructor use starts to carry the model.
Full scale operating case	$192.7k	$20.3k	$78.7k	89.5%	$93.3k	Best cushion, with fixed costs spread across more lessons.

What breaks the break-even plan if enrollment or costs slip?

Stress test

The base plan has about $116k of cushion, but that can narrow fast if class fill rate drops, cancellations rise, instructor pay climbs, or pool access costs increase. A 10% revenue dip still clears break-even; combined pressure pushes the business about $43k underwater.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$654k	$116k cushion	Healthy headroom, but it still depends on strong fill rates.
Revenue shortfall	Revenue falls 10% to $693k.	$654k	$39k cushion	Lower enrollment cuts the cushion, but the plan still holds.
Fixed-cost pressure	Fixed costs rise 10% to $601k.	$720k	$50k cushion	Lease and payroll pressure leave much less room for error.
Margin pressure	Variable expenses rise to 19.5% of revenue.	$679k	$91k cushion	Higher fees and staff costs eat into contribution fast.
Combined pressure	Revenue falls 10%, fixed costs rise 10%, and variable expenses rise to 19.5%.	$747k	$54k gap	At $693k sales, the business runs about $43k underwater.

Can you sign the pool lease and buildout only after the break-even checks pass?

Founder checklist

Do the math before you sign anything. This launch only works if signed pool time, the $54.6K monthly fixed load, and the $866K Month 1 cash need all line up with real enrollment, not hoped-for demand.

1Pool Access$282K

Confirm signed pool time before any lease or buildout spend, because the $282K capex for renovation, HVAC, equipment, furniture, IT, booking, and access control must be funded before lessons start.

2Fixed Load$54.6K/mo

Check that monthly overhead and payroll really stay near $54.6K, so sales can cover the cost base instead of chasing it.

3Margin Check83.5% CM

Verify Year 1 contribution margin at 83.5% after pool chemicals, consumables, marketing, and payment fees, because each revenue dollar only leaves 16.5 cents for fixed costs.

4Coverage Grid22 days

Map instructor coverage across 22 billable days in Year 1 at 60% occupancy, and make sure the Lead Instructor Manager, Senior Instructor, Junior Instructor, and front desk shifts can cover each time block.

5Cash Buffer$866K

Keep the Month 1 cash need of $866K funded before you commit, since the model hits its minimum cash in Month 1.

6Enrollment Mix250/80/30/50

Test children group, adult group, private, and semi-private demand separately, and only scale marketing when each lane can hit the model counts instead of buying growth on hope.