Money & Freelance
Markup, margin, and break-even are three different questions
These numbers are often placed in the same spreadsheet, then asked to answer one another’s questions.
Start with the denominator
A product costs $18 and sells for $30. The profit is $12. Markup asks, “How much was added to cost?” The answer is $12 divided by $18, or 66.7%. Margin asks, “What share of the selling price remains before other expenses?” The answer is $12 divided by $30, or 40%. Same profit. Different question. Different denominator.
This distinction matters whenever someone says a price has a 40% markup or a 40% margin without naming the base. A team can agree on the percentage and still disagree about the price. Write the base beside the number. It takes seconds and prevents a surprising amount of spreadsheet archaeology later.
Gross profit is not the whole business
The $12 left after the item cost is a useful first measure, but it is not automatically the business profit. Shipping, payment processing, returns, rent, payroll, support, and campaign costs may still be waiting. A product can have a positive item margin while the project or store loses money overall.
That does not make the item margin useless. It tells you what each sale contributes before the other costs are allocated. The mistake is treating a useful partial measure as a complete answer. Keep the layers visible: selling price, direct cost, contribution, overhead, and final profit.
Break-even needs incremental thinking
Break-even is about the extra activity required to recover a cost. If a campaign costs £12,000, adds £3,000 of fulfilment support, and contributes £17 per incremental unit, it needs 883 units to break even. Sales that would have happened without the campaign do not count. Neither do units sold with a discount if the discount changes the contribution figure.
The result is a threshold, not a recommendation. A plan that clears break-even by one unit has no room for a delayed launch, a higher return rate, or a weaker conversion rate. Run a lower case. Add a ramp-up period. Ask what happens if the variable cost rises. The little bit of discomfort in the downside case is usually cheaper than learning it after launch.
Discounts make the denominator move
Two sequential discounts of 20% and 10% are not 30% off. A $100 item becomes $80 and then $72, which is a 28% reduction. If tax is calculated after the discount and shipping is added separately, the final checkout amount has another sequence. That sequence should be written down before a promotion is advertised.
Use the calculators as a conversation starter with the spreadsheet, not as a replacement for it. The useful habit is to name the base, keep the time period consistent, and test the decision with a less flattering scenario. A tidy percentage is nice. A number that still makes sense after the costs arrive is better.