How Fixed Costs Increase Break-even Risk

Fixed costs have to be paid whether you sell anything or not. The bigger they are, the harder a slow month hits.

The problem

Fixed costs — rent, salaries, software subscriptions — don't shrink when sales drop. A business with high fixed costs needs a high baseline of sales just to break even.

A small business example

Café A: $3,000/month fixed costs, $4 profit per coffee → break-even = 750 coffees/month.

Café B: $9,000/month fixed costs, $4 profit per coffee → break-even = 2,250 coffees/month.

What the numbers mean

Café B has to sell 3× more just to cover the same kind of overhead. A quiet week is far more dangerous for B.

Practical interpretation

High fixed costs amplify both gains and losses. They're fine when sales are strong and consistent — and brutal when sales dip.

Action points

List every fixed cost and ask: is this truly fixed, or could it be variable?
Calculate your monthly break-even units or revenue.
Avoid taking on new fixed costs without confirmed recurring revenue.
Build a cash buffer sized to several months of fixed costs.

Need to calculate this? Visit SME Finance Helper.