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Parts Markup Calculator

Enter wholesale cost, see sell price at different markup percentages. Bulk mode for multiple parts. Pre-loaded electrical parts library.

Results

Sell Price
Profit Per Unit
Margin
Markup

Industry Benchmarks

Small parts (<$25) 250-400% markup · 71-80% margin
Medium parts ($25-$150) 150-250% markup · 60-71% margin
Major equipment ($150+) 75-125% markup · 43-56% margin
Wire & cable (per ft) 150-300% markup · 60-75% margin

Target: 65% blended margin on all parts combined.

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How to Use This Calculator

1. Pick a part or enter the cost. Use the Quick Lookup dropdown to select a common electrical part and auto-fill the wholesale cost, or type your own cost directly.

2. Set your markup percentage. Use the quick buttons for common markup levels or type any percentage. The industry standard for small electrical parts is 250-300%.

3. Read the results. The calculator instantly shows your sell price, profit per unit, margin percentage, and markup percentage. Compare against the benchmarks below to make sure you are in the right range.

4. Adjust until it fits. Try different markups to see how they affect your margin. If you are building a flat rate price book, use this to set consistent pricing across your parts inventory.

Markup vs Margin — What's the Difference

Markup is the percentage added on top of your cost. Margin is the percentage of the final sell price that is profit. They use different denominators, which is why the numbers are always different.

Here is a concrete example. You buy a GFCI outlet for $12 and mark it up 250%.

Sell Price = $12 x (1 + 250/100) = $12 x 3.5 = $42

Profit = $42 - $12 = $30

Markup % = ($30 / $12) x 100 = 250% (profit / cost)

Margin % = ($30 / $42) x 100 = 71.4% (profit / sell price)

The markup is 250% but the margin is only 71.4%. Markup will always be a larger number than margin for the same transaction. When someone says "we run 65% margins on parts," that translates to roughly a 186% markup. When someone says "we mark up 300%," that is a 75% margin.

The most common mistake is confusing the two. If you set your prices thinking 50% markup gives you 50% margin, you are actually only making a 33% margin. This calculator shows both numbers so you always know exactly where you stand.

When To Use This

Building a flat rate price book. When you are setting up or updating your flat rate pricing, you need consistent markups across every part. Pull up this calculator, go through your parts list, and set a sell price for each one. Use the benchmarks to keep small parts at higher markups and major equipment at lower markups so your blended margin hits 65%.

Quoting a repair on site. You diagnose a bad GFCI outlet and need to give the customer a price. Open the calculator on your phone, select the part from the dropdown, and you instantly see the sell price at your standard markup. No guessing, no mental math, no accidentally giving away margin.

Training new electricians on pricing. New electricians often undercharge on parts because they do not understand the difference between markup and margin. Walk them through this calculator to show why a 250% markup on a $12 GFCI outlet results in a $42 charge, and why that $30 profit is necessary to cover truck inventory, overhead, and warranty.

Frequently Asked Questions

What is the difference between markup and margin?
Markup is the percentage added to your wholesale cost to get the sell price. Margin is the percentage of the sell price that is profit. A 250% markup means you charge 3.5x your cost. The resulting margin is 71.4% because about five-sevenths of the sell price is profit. Markup is based on cost, margin is based on sell price.
What markup should electrical contractors use on parts?
Most electrical contractors use 250-400% markup on small parts under $25 like outlets, switches, and wire nuts. For mid-range items between $25 and $150 like breakers, GFCI devices, and dimmers, 150-250% markup is typical. For major equipment over $150 like panels and sub-panels, 75-125% markup is standard. The target is a blended margin of around 65% across all parts.
How do I calculate sell price from wholesale cost and markup percentage?
Multiply the wholesale cost by (1 + markup/100). For example, a $2 standard outlet at 250% markup: $2 x (1 + 250/100) = $2 x 3.5 = $7 sell price. The profit is $5 and the margin is 71.4%.
Why do electrical contractors mark up parts so much?
Parts markup covers more than just the part itself. It accounts for the cost of stocking inventory, warehouse space, vehicle inventory, ordering and shipping costs, warranty coverage, and the expertise to diagnose which part is needed and install it to NEC code. A 250% markup on a $12 GFCI outlet results in a $42 charge, which covers the truck roll, diagnostic time, and business overhead that made the repair possible.

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