Self-Service Restaurant Break-Even Revenue: $648K Monthly Sales

Fixed costs $17.7K/mo Base overhead only

Contribution margin 86.7% After variable costs

Break-even revenue $62.4K/mo Monthly sales target

Break-even timing Month 4 Launch ramp point

Break-even calculator

Test monthly revenue against variable costs and fixed overhead to see when this restaurant clears break-even.

Lean Base Full

Monthly revenue More revenue gives more room to cover fixed overhead. $ Slow month Busy month Variable expenses Use costs that rise with sales, like food, drinks, card fees, and promo. $ Tight costs High waste

Money available to cover fixed costs $59,700 $71,500 revenue - $11,800 variable expenses

Margin ratio

83%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead the restaurant has to cover. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which expenses are fixed and which move with sales in a self-service restaurant?

Cost classification

Break-even works only if fixed commitments are separated from sales-driven percentages. Rent and core payroll set the monthly hurdle, while ingredients, marketing, and card fees reduce contribution margin on every sale.

Expense	Cost	Break-Even Treatment	Common Mistake
Rent	Fixed	Use the full $12,000 per month as a fixed hurdle from Month 1 through Month 60.	Spreading rent across meals and treating it like it falls when traffic is slow.
Business Insurance	Fixed	Include $750 per month in fixed overhead before calculating required sales volume.	Leaving it below the line because it feels small next to payroll and rent.
Cleaning Services	Fixed	Model $1,200 per month as a recurring fixed operating expense for the planning range.	Assuming cleaning disappears on quiet days instead of staying on the monthly bill.
POS & Reservation Systems	Fixed	Treat point-of-sale (POS) and reservation systems as a $400 monthly fixed commitment.	Mixing the platform fee with card processing fees, which move with sales.
Food Ingredients	Variable	Apply the first-year rate of 10.0% of sales, falling to 8.0% by the fifth year.	Using gross sales as contribution before subtracting ingredient usage.
Credit Card Processing Fees	Variable	Apply 1.5% of sales in each year because the fee scales directly with payment volume.	Booking it as fixed software spend instead of a per-sale drag on margin.
Restaurant Manager	Semi-fixed	Carry the $75,000 annual salary as about $6,250 per month until management capacity changes.	Treating salaried leadership as fully variable when sales dip below plan.
Kitchen Staff	Semi-variable	Plan a base crew, then add labor as traffic rises from 2.0 FTEs in the first year to 6.0 FTEs in the fifth year.	Treating all payroll as variable; first-year total payroll is about $36.4k per month.

How does break-even shift from lean to full self-service?

Scenario table

More covers and a higher ticket raise revenue faster than the cost base. The lean case is closest to the line because rent and payroll stay fixed, while the base and full cases add cushion only if staffing grows in step with traffic.

Planning cases only; actual results will move with traffic, labor, and mix.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean self-service opening	$88.0k	$14.5k	$54.1k	83.5%	$19.4k	Above break-even, but the cushion is still tight.
Base self-service plan	$116.0k	$18.2k	$60.8k	84.3%	$36.9k	Clearer cushion, if payroll growth stays in step.
Full self-service buildout	$149.7k	$22.3k	$69.9k	85.1%	$57.6k	Best cushion, but only if traffic supports the larger team.

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

Stress test

The plan clears break-even on paper, but the cushion gets thin fast. A 15% sales miss, a 10% fixed-cost bump, or a 5-point margin squeeze can wipe out most of the buffer, and the combined hit turns negative.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change in sales, costs, or mix.	$680k	$165k cushion	The base plan clears break-even, but the buffer is thin.
Revenue shortfall	Sales run 15% below plan.	$659k	$59k cushion	A softer launch or weak lunch traffic cuts the buffer fast.
Fixed-cost increase	Fixed costs rise 10% to about $595k a month.	$734k	$111k cushion	Rent, utilities, and labor overhead can eat the cushion.
Margin pressure	Variable costs rise 5 points.	$723k	$122k cushion	Food inflation or labor overruns squeeze contribution fast.
Combined pressure	Sales fall 15%, fixed costs rise 10%, and variable costs rise 5 points.	$758k	$31k gap	That mix flips the model into a loss.

Can this self-service restaurant clear break-even before you sign the lease?

Founder checklist

Test the lease, menu prices, and staffing plan against the model before you commit. Break-even lands in Month 4, but cash still bottoms in Month 7, so the real question is whether the site can absorb the fixed load and opening ramp.

1Fixed load$17.65K/mo

Confirm the site can carry $12K rent plus the other fixed costs before payroll, or the lease will push break-even out.

2Cover flow455/week

Test the counter and pickup flow at 455 covers a week so launch demand matches what the kitchen and seating can handle.

3Ticket check$38/$48

Verify midweek checks near $38 and weekend checks near $48, because those tickets support the revenue base behind break-even.

4Contribution83.5%

Keep food, beverage, marketing, and card costs near 16.5% of sales so contribution stays close to 83.5% before rent and wages.

5Payroll ramp$36.4K/mo

Keep Year 1 payroll near $36.4K a month and add FTEs only when covers justify it, or labor will outrun volume.

6Cash reserve$579K

Hold this reserve because cash bottoms in Month 7 and payback takes 32 months, so the opening run needs a real cushion.