Seafood Restaurant Break-Even Analysis: ~$396K Monthly Revenue

Fixed costs $32.2K Monthly cost base

Contribution margin 81.5% After variable costs

Break-even revenue $39.6K Monthly revenue target

Break-even timing Month 3 Launch ramp point

Break-even calculator

Use this calculator to test how monthly revenue, variable expenses, and fixed costs shape the break-even point for a seafood restaurant.

Lean Base Full

Monthly revenue Revenue has to cover variable cost first, then the fixed monthly base. $ Slow month Busy month Variable expenses These are direct food, packaging, and payment costs that rise with sales. $ Low costs High costs

Money available to cover fixed costs $94,798 $113,258 revenue - $18,460 variable expenses

Margin ratio

84%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly cost base the restaurant must cover before profit. $ Lean base Heavy base

Break-even chart Revenue Total costs

Which seafood restaurant expenses are fixed, and which move with sales?

Cost classification

Break-even is only useful when rent, payroll, ingredients, and transaction fees are sorted by behavior. Misclassifying seafood waste, overtime, or refrigeration load can make Month 3 break-even look safer than it is.

Expense	Cost	Break-Even Treatment	Common Mistake
Rent Lease	Fixed	Include the full $5,000 each month before calculating required covers.	Spreading rent per cover and hiding slow-day pressure.
Utilities	Semi-variable	Start with the $800 monthly base, then allow usage to rise with refrigeration load, prep, and service volume.	Treating refrigeration and kitchen energy use as fixed.
Operating Wages	Semi-fixed	Model manager, chef, service, kitchen, and marketing labor as staffing blocks that step up as full-time equivalents increase.	Ignoring overtime and added shifts when covers rise.
Food Ingredients	Variable	Apply the first-year 7.0% of sales assumption directly against revenue, then update by year.	Treating seafood spoilage and inventory waste as fixed.
Beverage Supplies	Variable	Apply the first-year 8.0% of sales assumption as volume-linked product expense.	Leaving drink supplies inside general overhead.
Packaging Disposables	Variable	Apply the first-year 2.0% of sales assumption to orders that need packaging.	Assuming packaging stays flat when takeout volume changes.
Credit Card Processing Fees	Variable	Apply the 1.5% of sales assumption as a direct transaction expense.	Modeling fees like a monthly software bill.
Marketing Advertising	Semi-fixed	Use the $1,000 monthly plan as a base and step it up only when campaign scope changes.	Forcing marketing to rise with every extra cover.

How does break-even change as this seafood restaurant moves from lean Year 1 to full Year 3?

Scenario table

Lean volume covers the core cost base, but the cushion is thin. By Year 3, revenue rises faster than fixed costs, so break-even risk eases if planned covers hold.

Planning assumptions only; actual results will move with traffic, check size, food cost, and labor.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean Year 1	$721K	$133K	$322K	81.5%	$188K	Clears break-even, but the cushion is modest.
Base Year 2	$922K	$160K	$385K	82.6%	$341K	Stays above break-even with more room to absorb cost swings.
Full Year 3	$1,133K	$185K	$487K	83.7%	$399K	Holds the strongest cushion, so break-even pressure is lowest.

What breaks the break-even plan for this seafood restaurant?

Stress test

The base plan has about $325K of monthly cushion. Break-even gets pressured fastest by weaker weekday covers, spoilage, overtime, and utility spikes; even a 15% sales drop plus cost creep still leaves about $149K cushion.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$396K	$325K cushion	Strong cushion if covers hold.
Revenue shortfall	Monthly revenue falls 10% to about $649K.	$396K	$253K cushion	Slower weekday traffic cuts room for error.
Fixed-cost increase	Fixed costs rise 10% to about $355K a month.	$435K	$286K cushion	Rent, utilities, and labor creep lift the break-even line.
Margin pressure	Variable expenses rise 5 points, cutting contribution margin to 76.5%.	$422K	$299K cushion	Spoilage, overtime, or card fees push break-even up.
Combined pressure	Revenue falls 15%, variable expenses rise 5 points, and fixed costs rise 10%.	$464K	$149K cushion	Weak weekday covers and utility spikes can erase the cushion.

Can you prove this seafood restaurant clears break-even before you sign the lease?

Founder checklist

Test the lease, hiring, and inventory against the model before you commit. Year 1 needs about $39.6K in monthly sales to clear break-even, cash trough hits Month 2, and break-even arrives in Month 3, so the site only works if demand and staffing ramp fast enough.

1Demand proof$72.1K/mo

Verify that 745 weekly covers and the midweek and weekend AOV mix really produce about $72.1K a month, because the lease only works if traffic stays near plan.

2Lease load$39.6K/mo

Check that rent, utilities, marketing, and payroll can sit inside the break-even line, since the full Year 1 fixed load drives the monthly sales hurdle.

3Margin mix81.5% CM

Keep first-year variable costs near 18.5% of sales, so contribution margin stays around 81.5% and the break-even math does not drift.

4Staffing ramp745/wk

Staff to the 745 weekly covers plan, or labor and service will get tight before the restaurant reaches break-even.

5Peak capacity460 covers

Confirm Friday through Sunday can handle 460 of 745 weekly covers, since the weekend volume is the real test for kitchen flow and refrigeration.

6Opening stockMonth 3

Only buy the $15K opening inventory when supplier terms for fish, shellfish, beverage supplies, and food ingredients fit the first ramp, since the model expects Month 3 break-even and about a 16-month payback.