Cost Plus Calculator
Pricing by gut feel fails in both directions: too low and every sale quietly loses money once fees and shipping land, too high and buyers walk. Cost-plus pricing replaces the guess with a method: build the true unit cost, spread any batch costs across the quantity, then add the markup you chose.
Enter your product or service cost, pick a percentage or fixed markup, and add any extra costs and quantity below. The calculator returns the selling price per unit, the margin that markup really leaves you, and the revenue and total profit across the whole quantity.
The price this returns is before sales tax unless you included tax in your costs. It is a cost-based floor, not a market price: check it against what buyers will actually pay before you commit to it.
Quick Answer
- Quick Answer
- How to use the cost plus calculator
- The cost-plus formulas, step by step
- Worked example: pricing a 100-unit batch
- Markup is not margin: the conversion that prevents underpricing
- When cost-plus pricing works, and when it misleads
- What competing calculators miss
- Frequently Asked Questions
- Add This Calculator to Your Website
- References
How to use the cost plus calculator
Enter the per-unit cost, choose percentage or fixed markup, enter the markup value, then add any batch-level extra costs and the quantity they cover.
Two fields catch people out. Additional Costs is a total for the whole batch, not a per-unit amount: $500 of freight on 100 units adds $5.00 to each unit cost, and the markup is then applied to that higher cost. Quantity therefore changes the price, not just the totals, whenever additional costs are present. If your extras are already per unit, enter them multiplied by the quantity, or fold them into the unit cost and leave Additional Costs at 0. If you are still building the unit cost itself from materials, labour, and overhead, work that figure out first with a cost per unit calculator, then bring the finished unit cost here.
The cost-plus formulas, step by step
Cost-plus pricing adds a chosen markup to a fully loaded unit cost. The fully loaded part is where most hand calculations go wrong, because batch costs get forgotten or get added twice.
Load the unit cost. Take the $50.00 unit cost and add its share of the batch costs: $500 / 100 units = $5.00, giving a total cost per unit of $55.00.
Apply the markup to the loaded cost. At 40%, the markup amount is $55.00 x 0.40 = $22.00. Marking up the bare $50 instead would have given $20.00 and quietly left the freight unmarked and partly uncovered.
Add to get the price, then check the margin. Selling price is $55.00 + $22.00 = $77.00. Margin is $22.00 / $77.00 = 28.57%, which is the share of the selling price you actually keep as gross profit.
Cost build-up discipline matters more than the division. As Business Wales pricing guidance puts it, the cost base should add together materials, labour, packaging, and the other costs of producing the product or service before any percentage is added on top for profit. Sellers with shared overhead across many products often validate that build-up with an activity based costing calculator so one product is not carrying another product costs.
Worked example: pricing a 100-unit batch
The calculator is pre-filled with this case, and every figure below is what it returns.
| Output | Calculation | Result |
|---|---|---|
| Total cost per unit | $50.00 + ($500 / 100) | $55.00 |
| Markup amount | $55.00 x 40% | $22.00 |
| Selling price per unit | $55.00 + $22.00 | $77.00 |
| Profit per unit | Same as the markup amount | $22.00 |
| Profit margin | $22.00 / $77.00 x 100 | 28.57% |
| Total revenue | $77.00 x 100 | $7,700.00 |
| Total profit | $22.00 x 100 | $2,200.00 |
Run the same product as a fixed markup to see why the toggle exists. Keep the $50 cost and set a fixed markup of $15 with no additional costs and a quantity of 1: the price is $65.00 and the margin is 23.08%. A fixed markup protects a dollar amount per sale, which suits services and low-ticket items. A percentage markup scales with cost, which suits product ranges where unit costs vary widely and you want a consistent proportional return. Neither one knows anything about demand, which is the trade-off covered next.
Markup is not margin: the conversion that prevents underpricing
Markup is profit measured against cost. Margin is the same profit measured against the selling price. Because the price is always the bigger number, margin always comes out lower, and confusing the two is the most expensive arithmetic slip in small-business pricing.
If you think in markup
- Formula: (price - cost) / cost x 100
- A 40% markup on a $55.00 cost prices at $77.00
- Best for: setting prices from a known cost
- Watch out: the margin you keep will be lower than 40%
If you think in margin
- Formula: (price - cost) / price x 100
- That same $77.00 price on a $55.00 cost is a 28.57% margin
- Best for: judging profitability and comparing products
- Watch out: pricing to a 40% margin needs a $91.67 price, not $77.00
| Markup on cost | Equivalent margin on price | Price on a $55.00 cost |
|---|---|---|
| 20% | 16.67% | $66.00 |
| 25% | 20.00% | $68.75 |
| 40% | 28.57% | $77.00 |
| 50% | 33.33% | $82.50 |
| 100% | 50.00% | $110.00 |
The conversion in one line is margin equals markup divided by (1 plus markup), which is the relationship Xero markup guidance also stresses when it separates the two measures. If your target is actually a margin, test the price this calculator returns against a margin target, for example with a 20 percent margin calculator, and if you sell a range at different margins, check the blended result with a blended margin calculator before averaging your markups by feel.
When cost-plus pricing works, and when it misleads
Cost-plus works best when costs are knowable, volumes are steady, and buyers accept cost-based justification, which is why it is standard in custom work, contracting, manufacturing, and professional services quoting.
Strengths
- Every sale covers its loaded cost by construction, so volume cannot hide a per-unit loss for long.
- Simple to explain and defend: the price is the cost plus a stated percentage.
- Consistent across a catalogue, which makes quoting and re-pricing fast.
- Works before you have any sales history to price from.
Limits
- Ignores demand: it can price above what buyers will pay, or far below what they happily would pay.
- Ignores competitors: a rival with lower costs can undercut a cost-plus price and still profit.
- Rewards inefficiency if left unchecked, because higher costs simply produce a higher price.
- Stands or falls on overhead allocation, which is an estimate, not a fact.
The practical compromise most businesses land on is cost-plus as the floor and the market as the ceiling. Calculate the cost-plus price first so you know the lowest sustainable number, then compare it with competitor prices and buyer willingness to pay, and set the final price in that range. Re-run the calculation whenever a material, freight, or platform fee changes, because a markup set against last year costs protects last year margin, not this year one.
What competing calculators miss
The markup tools reviewed for this page are strong on the single-unit percentage case and thin everywhere this calculator is not.
Miss 1: no batch costs, no quantity. The leading markup calculators take a cost and a percentage and return a price for one unit. Real pricing has freight bills, platform fees, and setup costs that belong to a batch. Here, $500 across 100 units moves the price from $70.00 to $77.00, a difference a single-unit tool cannot even represent.
Miss 2: percentage markup only. Most tools assume the markup is always a percentage. Contractors, freelancers, and service businesses often add a flat dollar amount per job or per unit. The fixed markup mode here covers that case with the same margin and totals reporting.
Miss 3: a markup to margin error in print. One widely read cost-based pricing guide states that a 25% markup on a $100 cost, giving a $125 price and $25 profit, implies a 25% profit margin. It does not: $25 divided by the $125 selling price is a 20.00% margin. This page shows the margin the tool actually computes on every run and includes the full conversion table above, so that slip cannot survive into your price list.
Frequently Asked Questions
Markup is profit as a percentage of cost; margin is the same profit as a percentage of selling price. A $22.00 profit on a $55.00 cost sold at $77.00 is a 40% markup but only a 28.57% margin. Markup is always the larger number for the same sale.
Additional Costs is a batch total. The calculator divides it by the quantity, adds that share to the unit cost, and only then applies the markup. So $500 of extra costs over 100 units adds $5.00 to each unit cost, while the same $500 over 10 units would add $50.00.
Use a percentage markup when unit costs vary across your range and you want a proportional return on each item. Use a fixed dollar markup when you want the same dollar profit per sale regardless of cost, which is common for services, add-ons, and low-priced items.
There is no universal right markup. It depends on your industry norms, your overhead, how price-sensitive your buyers are, and what competitors charge. Set the markup so the resulting margin covers overhead and leaves your target profit, then check the price against the market before committing.
Because they divide the same profit by different bases. Markup divides by cost, margin divides by the higher selling price, so margin always comes out lower. The conversion is margin = markup / (1 + markup): a 40% markup is a 28.57% margin, and a 100% markup is a 50% margin.
No, not unless you put tax into your cost or additional costs yourself. The calculator returns a pre-tax selling price built from cost plus markup. Add sales tax on top at checkout according to the rules that apply to your sales.
Yes. For a service, the unit cost is the loaded cost of delivering one job or one hour: labour, materials, software, travel, and a share of overhead. Enter any job-level extras as additional costs with a quantity of 1, or spread batch extras across the number of jobs they cover.
You get the plain single-unit case: selling price = cost + markup on that cost, and the totals equal the per-unit figures. That is the right setup for a one-off quote where every cost is already inside the unit cost.
Add This Calculator to Your Website
References
- Xero, "How to Calculate Markup" - markup formula, selling price from a known markup, and the markup versus margin distinction with worked examples. Xero: How to Calculate Markup. Accessed October 2026.
- Business Wales, "Pricing" - the cost-plus method defined as all production costs added together plus a percentage for profit, with its stated disadvantages. Business Wales: Pricing. Accessed October 2026.
- Wall Street Prep, "Cost-Based Pricing" - cost-plus pricing formula, unit cost components including direct and indirect costs, and markup percentage drivers. Wall Street Prep: Cost-Based Pricing. Accessed October 2026.
- Penpoin, "Cost-Plus Pricing: Formulas, How to Calculate, Pros and Cons" - total cost to cost per unit to marked-up price sequence with a manufacturing example. Penpoin: Cost-Plus Pricing. Accessed October 2026.
- Pricing Wiki, "Cost-Plus Pricing: Core Philosophies and Strategy" - cost base as variable cost plus allocated overhead, and the markup versus margin price gap quantified. Pricing Wiki: Cost-Plus Pricing. Accessed October 2026.
- Vaia, Horngren Cost Accounting textbook problem set, "What Is Cost-Plus Pricing?" - total cost per unit as fixed costs divided by units plus variable cost per unit, then marked up. Vaia: What Is Cost-Plus Pricing?. Accessed October 2026.