If production increases, variable cost will:

Please note that this article is intended for educational purposes only and should not be deemed to be or used as legal, employment, or health & safety advice. For guidance or advice specific to your business, consult with a qualified professional.


Tracking your turnover is a key part of running a business. But if you want to make a profit, so is keeping an eye on your costs. Understanding variable costs and where they fit within your business expenses is therefore key.

While fixed costs remain the same, variable costs rise and fall depending on how much you produce. As a rule, the more units you make, the higher they are. If you don’t produce anything, however, then the variable expense is zero.

Variable cost examples

So, what exactly constitutes a variable cost? As we said, the variable cost rises and falls according to your production output. Here are some of the most common ones you might incur:

  • Raw materials - one of the major costs, particularly if you produce a physical product

  • Production supplies - any supplies directly associated with manufacturing will fluctuate according to production volume

  • Shipping costs - if you physically send goods, this total will go up and down depending on the volume you send

  • Commission rates - commission is only paid on sales, so the more you sell, the more this will rise

  • Direct labour - if you pay staff by the hour to make your goods or services

  • Credit card fees - if you take card payments, you’ll pay fees per transaction

For accounting purposes, variable costs are considered short-term because you can quickly move to change them. For example, they can be changed simply by getting a new supplier. Fixed costs, on the other hand, are long-term. They do still change over time due to things like salary increases, but tend to remain steady for relatively long periods.

Variable costs vs fixed costs

As we’ve said, the definition of a variable cost is a cost which changes depending on your product or service output.

Fixed costs, however, remain the same no matter how much you produce. Your rent, insurance and employee salaries (unrelated to direct production) will still have to be paid each month, no matter your production volume.

Calculating total variable cost

To calculate your total variable cost, you need to multiply the cost per unit by the total number of units produced.

For example, a factory makes reusable water bottles. It costs £1.50 to make each bottle. If they make 1000 bottles the total variable cost is 1000 x 1.5 = £1,500.

To calculate your gross profit you subtract the cost of goods sold (your variable costs) from the total revenue (the amount you sold the goods for).

Impact on profit

A company with low fixed costs and high variable costs usually enjoys consistent profitability. If their variable expenses increase, they can quickly move to reduce them and keep profitability high. This is much harder for companies with a lot of fixed costs to achieve due to a higher break-even point and the relative difficulty of bringing down costs.

However, a company with higher fixed costs is likely to enjoy greater profitability once those costs are covered.

As production increases you can negotiate lower prices for raw materials with your suppliers. This is known as economies of scale. Direct labour costs, on the other hand, are often difficult to renegotiate. But a model whereby staff are paid proportional to units produced can help better correlate costs and production.

Frequently asked questions

Which cost is an example of a variable cost?

The cost of raw materials is a core example of variable costs. If your business makes cakes, for example, you’ll need raw materials such as eggs, butter and flour. As those prices fluctuate, so will your business expenses.

Can variable costs be indirect?

Technically they can. Take electricity - this may rise or fall depending on the number of units made in a factory, but consumption can’t be tied directly to one specific product.

How do you find the variable cost?

To calculate variable cost, you multiply the amount it costs to make a single unit by the total number of units sold.

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VARIABLE COST
Variable is the expense bore by a company that changes with change in production and sales. It is not fixed, unlike fixed costs. As production rises, the variable cost rises as raw materials need to be acquired in more quantities.

Variable cost example
A bakery intends to increase its production. Its variable cost will increase as it needs an increased supply of raw materials (like eggs, milk, flour, etc. ) whereas its fixed cost (costs relating to maintenance of equipment, and management) will remain the same, irrespective of increase or decrease in production.

KEY TAKEAWAY
A company, to operate smoothly, incurs two kinds of costs - fixed and variable.
Variable costs can depend on raw materials, direct labour cost, shipping charges, packaging charges (with increase or decrease in sales)
The ratio of variable costs to fixed costs is used by company managers to determine whether an increase in production will lead to more profit at a given time.
Investors and analysts use variable costs to determine the risk of investment. The higher the ratio of the variable cost to fixed cost, the safer the investment is said to be. It will also have return rates.

Variable Cost Calculation
The variable cost is calculated as the total quantity of output multiplied by the variable cost per unit of output.

Variable Costs vs. Fixed Costs

VARIABLE COST FIXED COST
Costs that change with an increase or decrease in production sales Costs that remain fixed over a period of time, irrespective of sales or production.
Variable cost example - raw material prices, packaging, shipping charges, transaction charges, direct labour cost, certain utilities like gas, electricity, water Fixed cost examples - rent, cost of equipment, maintenance, insurance, security

How can variable costs impact growth and profits?
The total cost of production is variable cost plus fixed cost. The profit is calculated as the difference between the sales and the total cost. If a company wants to increase its profits, it must bring down its total cost. Since fixed costs are almost impossible to reduce, decreasing costs means decreasing variable costs.
However, while decreasing the variable cost, it must be taken into account that it, in no way, affects the production and quality of products produced. This might ultimately affect sales.

What are variable costs?

Variable cost is the expense incurred by a company that changes with change in production and sales. It is contrasted with fixed cost

Give some variable cost examples
Cost of raw material, labour cost, shipping and packaging charges, transaction charges

How does variable cost differ from fixed cost?
Fixed costs are expenses incurred by a company irrespective of a rise or fall in production or sales whereas variable cost depends on sales and production.

How is variable cost relevant for investors?
Investors and market analysts use the ratio of a company's variable cost to its fixed cost to determine the volatility of an investment. The higher the ratio, the safer is the investment.

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Do variable costs vary with production?

Variable costs are costs that vary as production of a product or service increases or decreases. Unlike direct costs, variable costs depend on the company's production volume. When a company's production output level increases, variable costs increase.

What happens to variable cost when fixed cost increases?

Fixed costs do not change with increases/decreases in units of production volume, while variable costs fluctuate with the volume of units of production. Fixed and variable costs are key terms in managerial accounting, used in various forms of analysis of financial statements.

When production increases what is fixed cost?

Fixed costs do not vary with the production level. Total fixed costs remain the same, within the relevant range. However, the fixed cost per unit decreases as production increases, because the same fixed costs are spread over more units.

What are variable costs of production?

Variable costs are costs that change as the volume changes. Examples of variable costs are raw materials, piece-rate labor, production supplies, commissions, delivery costs, packaging supplies, and credit card fees. In some accounting statements, the Variable costs of production are called the “Cost of Goods Sold.”