Monthly cash flow requirement

Quick answer

Here's what most restaurant owners don't realize until it's too late: you can be profitable on paper and still go bankrupt. Cash flow isn't about making money—it's about having enough in the bank to pay bills when they're due.

Here's what most restaurant owners don't realize until it's too late: you can be profitable on paper and still go bankrupt. Cash flow isn't about making money—it's about having enough in the bank to pay bills when they're due. Your monthly cash flow requirement tells you exactly how much you need to survive.

What is cash flow requirement?

Cash flow requirement is the amount you need monthly to cover all fixed and variable costs, plus a buffer for unexpected expenses. It's not about profit, it's about survival.

? Example:

Restaurant with 60 seats calculates:

Rent: €4,500
Staff: €18,000
Purchases: €12,000
Energy: €2,200
Other costs: €3,300

Total cash flow requirement: €40,000 per month

Inventory your fixed costs

Start with all costs that hit your account every month, regardless of how busy you are:

Rent and lease: Including service charges and municipal taxes
Staff: Gross salaries, social contributions, pension premiums
Insurance: Liability, inventory, business damage
Energy: Gas, water, electricity (take an average of 12 months)
Phone and internet: Fixed lines, mobile, POS system subscriptions
Depreciation: Kitchen equipment, furniture, renovations

Calculate variable costs

These costs move with your sales, but they're unavoidable every month:

? Example calculation:

At €35,000 monthly sales:

Food cost 30%: €10,500
Beverage purchases 20%: €1,400
Credit card fees 1.5%: €525
Marketing 2%: €700

Variable costs: €13,125

Food purchases: Usually 28-35% of your food sales
Beverage purchases: Usually 18-25% of your beverage sales
Credit card fees: 1-2% of total sales
Delivery platforms: 15-30% of delivery sales
Marketing and advertising: 2-5% of sales

Buffer for unforeseen expenses

Always add cushion for expenses that'll blindside you:

⚠️ Heads up:

Without a buffer, you risk that one broken freezer or absent staff member puts you in a liquidity crisis.

Repairs: Kitchen equipment, air conditioning, POS system
Sick leave coverage: Extra staff for absences
Seasonal dips: Lower sales in quiet periods
Price increases: Suppliers regularly raise prices

A typical buffer runs 10-15% of your total monthly costs.

Formula for cash flow requirement

Monthly cash flow requirement = Fixed costs + Variable costs + Buffer (10-15%)

? Complete example:

Restaurant with €35,000 monthly sales:

Fixed costs: €22,500
Variable costs: €13,125
Subtotal: €35,625
Buffer 12%: €4,275

Total cash flow requirement: €39,900

Monitor your cash flow

Don't calculate this once and forget it. Check monthly—costs shift, suppliers raise prices, staff expenses climb. And here's a pattern we see repeatedly in restaurant financials: operators who track this monthly stay solvent longer than those who don't.

Tools like KitchenNmbrs can automatically track your food cost and variable expenses, giving you current figures for your cash flow calculations.

How do you calculate your monthly cash flow requirement? (step by step)

Inventory all fixed costs

Make a list of all costs that come back every month: rent, staff, insurance, energy, phone, depreciation. Add these up for your total fixed costs per month.

Calculate variable costs as a percentage

Determine your food cost (28-35%), beverage purchases (18-25%), credit card fees (1-2%) and other variable costs as a percentage of your expected monthly sales. Multiply by your sales.

Add buffer for unforeseen expenses

Add up fixed and variable costs. Add 10-15% buffer to this for repairs, sick leave coverage and seasonal dips. This is your total monthly cash flow requirement.

✨ Pro tip

Compare your monthly cash flow requirement against your lowest sales month in the past 12 months. If your requirement exceeds 90% of that worst month, you're operating dangerously close to the edge.

Calculate this yourself?

In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.

Try KitchenNmbrs free →

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Frequently asked questions

How much buffer should I maintain for unforeseen costs?

A typical buffer runs 10-15% of your total monthly costs. With higher fixed expenses like expensive rent or large staff, lean toward 15%.

Should I include VAT in my cash flow calculation?

Yes, calculate with VAT-inclusive amounts. You pay suppliers with VAT upfront, even though you'll recover it from tax authorities later. Cash flow is about actual money leaving your account.

What if my cash flow requirement exceeds my monthly sales?

You're bleeding money and need immediate action: cut costs, raise prices, or boost sales. This signals your business model isn't sustainable.

How do I handle seasonal fluctuations in my cash flow planning?

Calculate separate requirements for peak and slow seasons. Build extra reserves during busy months to cover the lean periods—many restaurants fail because they don't plan for seasonal dips.

ℹ️ This article was prepared based on official sources and professional expertise. While we strive for current and accurate information, the content may differ from the most recent regulations. Always consult the official authorities for binding standards.

Sources consulted

EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
NVWA — Hygiënecode voor de horeca (2024) — Official source
NVWA — Allergenen in voedsel (2024) — Official source
Codex Alimentarius — International Food Standards (2024) — Official source
FSA — Safer food, better business (HACCP) (2024) — Official source
BVL — Lebensmittelhygiene (HACCP) (2024) — Official source

Food Standards Agency (FSA) — https://www.food.gov.uk

The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.

Written by

Jeffrey Smit

Founder & CEO of KitchenNmbrs

Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.

8 years kitchen manager at 1NUL8 Group Rotterdam

Expertise: food cost management HACCP kitchen management restaurant operations food safety compliance

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