Question 1

What's the difference between margin and markup?

Accepted Answer

Margin is gross profit as a percentage of price; markup is gross profit as a percentage of cost. Same dollars, different denominators. A $100 product with $40 cost has $60 of gross profit — that's a 60% margin ($60 ÷ $100) but a 150% markup ($60 ÷ $40). Margin is bounded between 0% and 100%; markup has no upper bound. Margin is the more useful operating metric because it directly tells you what fraction of every revenue dollar funds the rest of the business.

Question 2

How do I convert between margin and markup?

Accepted Answer

Markup = Margin ÷ (1 − Margin). Going the other way: Margin = Markup ÷ (1 + Markup). Worked: 25% margin → 0.25 ÷ 0.75 = 33.33% markup. 50% margin → 0.5 ÷ 0.5 = 100% markup. 75% margin → 0.75 ÷ 0.25 = 300% markup. The relationship is not symmetric — the higher the margin, the more dramatic the markup number gets, which is why retail vendors love quoting markup (it sounds bigger) and finance teams stick with margin (it's bounded and comparable).

Question 3

What's a good gross margin?

Accepted Answer

Strongly industry-dependent. Damodaran's NYU Stern dataset (https://pages.stern.nyu.edu/~adamodar/New_Home_Page/datafile/margin.html) is the canonical reference. Typical bands: SaaS 70–85%, e-commerce 25–45%, restaurants 60–70% on food cost specifically (operating margin much lower after labor + rent), professional services 30–50%, manufacturing 25–35%, wholesale 15–30%, retail 30–45%, construction 15–25%. The right benchmark isn't a universal number — it's the top quartile of your specific industry, because that's the band that funds category-leading operating leverage.

Question 4

What's included in COGS?

Accepted Answer

Cost of Goods Sold (COGS) is the direct cost of producing the goods or service you sold: raw materials, direct labor that physically produces the unit, freight-in, payment processing fees, and any per-unit third-party costs. Excluded from COGS — and instead classified as operating expenses below gross profit — are rent, salaried headcount not directly producing units, marketing, R&D, software subscriptions for the business as a whole, and general administrative overhead. The line is fuzzier than it sounds; FASB ASC 606 (Revenue Recognition) and your auditor will both want the COGS classification to be consistent year-over-year.

Question 5

Should shipping and payment processing be in COGS?

Accepted Answer

For most businesses, yes. Shipping (freight-out) and payment-processing fees (Stripe, Shopify, Square, etc.) scale per-unit with sales and are widely treated as direct cost of revenue. The exception: some legacy GAAP-flavored presentations classify outbound shipping as a selling expense rather than COGS. For internal management reporting, put anything that varies linearly with each sale into COGS so your gross margin reflects unit economics; for external GAAP financials, follow the classification your auditor signed off on.

Question 6

How does gross margin relate to break-even?

Accepted Answer

Closely. In a single-product business, gross margin per unit is essentially the contribution margin per unit (price minus variable cost), and break-even units = fixed costs ÷ contribution margin. So a higher gross margin lowers break-even more than proportionally. The two diverge in multi-product businesses (where contribution margin is weighted by sales mix) and in cost structures with semi-variable costs. For quick mental math: if your fixed costs are $X/month and your gross margin is M%, you need roughly $X ÷ M of monthly revenue to break even.

Question 7

Why does my gross margin keep dropping over time?

Accepted Answer

Five typical drivers, often stacking: (1) input-cost inflation that you didn't fully pass through to price; (2) sales-mix shift toward lower-margin products or lower-tier customer segments; (3) increased discounting or promotional intensity; (4) new vendor or channel costs (e.g., marketplace fees, higher payment processing on subscription billing); (5) scale-driven complexity that adds direct cost (e.g., regional fulfillment, tiered support). Decompose the drop with a margin bridge: hold price constant and recompute margin, then hold mix constant and recompute, then check vendor-cost trends. The bridge tells you whether the cause is pricing, mix, or cost.

Question 8

Is 100% gross margin possible?

Accepted Answer

Only if COGS is exactly $0, which is rare. Some digital goods come close — a downloadable PDF or template has near-zero incremental cost — but in practice payment processing (~2.9% + $0.30), hosting, customer support, and refund losses pull effective margin below 100%. The closer to 100% you get, the more pricing power you have, because every dollar of revenue flows almost entirely to gross profit. SaaS at 80–85% is the closest most real businesses get; pure-digital info products with no support component can hit 95%+ before payment processing.

Margin (% of price)	Markup (% of cost)
10.0%	11.1%
20.0%	25.0%
25.0%	33.3%
33.3%	50.0%
50.0%	100.0%
60.0%	150.0%
75.0%	300.0%
90.0%	900.0%

Gross Margin Calculator

Key facts

Margin vs markup — the conversion table

What this means

Worked example

Frequently asked questions

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