Markup vs Margin for Painters: The Formulas, a Table, and Worked Examples
Markup and margin are not the same number, and confusing them is the most expensive arithmetic mistake in the painting trade. "Cost plus 50%" sounds like a 50% margin — it's actually 33%. Below: the two formulas side by side, a full conversion table you can price straight off, and worked painting examples. Surfacely prices on margin, and this is why.
The two formulas, side by side
Both start from the same cost. The difference is what the percentage is measured against — and that changes everything.
Margin is taken from sell: Sell = Cost ÷ (1 − Margin%)
Markup measures your profit against your cost. Margin measures it against your sell price — the money that actually landed. Because your sell price is always bigger than your cost, the same profit is a bigger percentage of cost than of sell. So a given markup percentage always converts to a smaller margin percentage. Quote "cost plus X%" thinking it's your margin and you under-earn on every single job.
Markup → margin conversion table
Read this when someone quotes you a markup and you want to know the real margin. The gap widens as the number climbs.
| Markup on cost | Multiply cost by | Actual margin earned |
|---|---|---|
| 15% | × 1.15 | 13.0% |
| 20% | × 1.20 | 16.7% |
| 25% | × 1.25 | 20.0% |
| 30% | × 1.30 | 23.1% |
| 40% | × 1.40 | 28.6% |
| 50% | × 1.50 | 33.3% |
| 66.7% | × 1.667 | 40.0% |
| 100% | × 2.00 | 50.0% |
Margin → markup: what to actually charge
This is the one that matters when you price. Pick the margin you want to keep, then use the divisor — never the "× 1.something" your gut reaches for.
| Target margin | Divide cost by | Equivalent markup | The trap |
|---|---|---|---|
| 20% | ÷ 0.80 | 25% | × 1.20 earns only 16.7% |
| 25% | ÷ 0.75 | 33.3% | × 1.25 earns only 20.0% |
| 30% | ÷ 0.70 | 42.9% | × 1.30 earns only 23.1% |
| 33.3% | ÷ 0.667 | 50.0% | × 1.333 earns only 25.0% |
| 40% | ÷ 0.60 | 66.7% | × 1.40 earns only 28.6% |
| 50% | ÷ 0.50 | 100% | × 1.50 earns only 33.3% |
Surfacely's pricing engine uses the divisor form on every line — sell equals cost divided by (1 − margin%) — so the margin you type is the margin you keep, category by category.
Worked example — a $4,000 painting job
Say the true cost of a repaint — labour, materials, access, overheads — comes to $4,000. Watch what each approach charges the client, and what you actually keep. (Currency shown as an example; substitute your own.)
| Approach | Calculation | You charge | Profit | Real margin |
|---|---|---|---|---|
| "Cost plus 50%" (markup) | $4,000 × 1.50 | $6,000 | $2,000 | 33.3% |
| Target 50% margin (correct) | $4,000 ÷ 0.50 | $8,000 | $4,000 | 50.0% |
| "Cost plus 40%" (markup) | $4,000 × 1.40 | $5,600 | $1,600 | 28.6% |
| Target 40% margin (correct) | $4,000 ÷ 0.60 | $6,667 | $2,667 | 40.0% |
The painter who wanted a 50% margin but reached for "plus 50%" charged $2,000 too little and kept a third instead of a half. On one job that's a lost weekend's wage; over a year of jobs it's the difference between a business and a treadmill.
Why margin — not markup — is the right lens
- Margin is money you keep. It's stated against revenue, so a 40% margin means 40 cents of every dollar the client pays is gross profit. That's the number your business actually runs on.
- Markup hides the erosion. A confident-sounding "plus 30%" quietly delivers 23%. The bigger your target, the bigger the shortfall — exactly when the stakes are highest.
- Margins compare across categories. Labour, materials, and access carry different margins. Stated as margin they're directly comparable; stated as markup they're not.
- It's the industry benchmark. Healthy painting businesses talk in gross margin — typically 35–50% on labour, 20–30% on materials. See painting business profit margins for the full targets.
How to price at a target margin — four steps
- Total your true cost. Labour at your loaded rate, materials, access, prelims, and an overhead share — the complete estimate, not a guess.
- Choose your target margin. The percentage you want to keep from the sell price — say 40%.
- Divide, don't multiply. Sell equals cost ÷ (1 − margin%). For 40%, divide by 0.60. Never multiply by 1.40.
- Check it. (Sell − Cost) ÷ Sell should equal your target. If it comes out smaller, you used markup by mistake.
Apply the formula category by category — labour, materials, access, overheads — so each margin is protected separately. The full method is in how to quote a painting job.
Related guides
- How to quote a painting job
- Painting business profit margins
- Painting estimate template
- Painter hourly rate calculator
FAQ
What is the difference between markup and margin?
Markup is added to cost; margin is taken from the sell price. The same profit is a bigger percentage of cost than of revenue, so a given markup always converts to a smaller margin. Cost plus 50% is a 33% margin, not 50%.
Is 50% markup the same as 50% margin?
No. 50% markup is only a 33.3% margin. To actually earn a 50% margin you divide cost by 0.50, which is a 100% markup. The two numbers diverge more the higher you go.
How do I convert markup to margin?
Margin equals markup divided by (1 + markup). So 25% markup is 25 ÷ 125 = 20% margin. The conversion table above lists the common values.
Which should painters use, markup or margin?
Margin. It's stated against the money you actually keep, it compares cleanly across labour, materials, and access, and it's the industry benchmark. Surfacely prices on margin: sell equals cost divided by (1 − margin%).
How do I price a job at a target margin?
Total your true cost, choose the margin you want to keep, then divide the cost by (1 − margin%). For a 40% margin, divide by 0.60. Check that (sell − cost) ÷ sell equals your target.
What margin should a painting business aim for?
Typically 35–50% gross on labour and 20–30% on materials, blending to around 40% on a residential repaint. Below 30% blended you're working for wages, not building a business.