Overhead Costs: What They Are, How to Calculate and Reduce Them

Every business has expenses that keep the lights on but don't directly produce a product or serve a client. These are your overhead costs—and if you don't track them carefully, they can quietly erode your profits.

Understanding overhead is essential for pricing your products correctly, setting realistic budgets, and identifying where you're spending more than you should. In this guide, we'll break down what overhead costs are, the different types, how to calculate your overhead rate, and practical strategies to bring those costs down.

What Are Overhead Costs?

Overhead costs are the ongoing expenses required to run your business that aren't directly tied to producing a specific product or delivering a specific service. Think of them as the cost of keeping your business afloat—rent, utilities, insurance, office supplies, and administrative salaries all fall into this category.

The key distinction is between direct costs and indirect costs:

• Direct costs are tied to a specific product or service. Raw materials, production labor, and shipping costs for a particular order are all direct costs.
• Indirect costs (overhead) support the business as a whole. Your office lease doesn't change whether you produce 100 units or 1,000 units.

For example, a bakery's flour and sugar are direct costs—they go straight into the product. But the bakery's rent, the electricity that powers the ovens during off-hours, and the accountant's salary are all overhead.

Types of Overhead Costs

Not all overhead behaves the same way. Understanding the three categories helps you forecast more accurately and identify where you have flexibility to cut back.

Fixed Overhead

Fixed overhead costs remain constant regardless of how much business you do. You'll owe these amounts whether you have a record month or a slow one.

Common examples include:

• Rent or mortgage payments
• Business insurance premiums
• Salaried administrative staff
• Loan payments
• Property taxes
• Web hosting and domain fees

Fixed overhead provides stability in your budget because it's predictable. The downside is that these costs don't shrink when revenue dips.

Variable Overhead

Variable overhead fluctuates with your level of business activity. When you produce more or serve more customers, these costs rise; when things slow down, they decrease.

Examples include:

• Utilities (electricity, water, gas)
• Office supplies and consumables
• Shipping and packaging materials
• Equipment maintenance and repairs
• Seasonal or temporary staff
• Sales commissions

Variable overhead gives you more flexibility because it naturally adjusts to your business volume.

Semi-Variable Overhead

Semi-variable overhead has both fixed and variable components. You pay a base amount regardless of activity, plus additional costs that scale with usage.

Examples include:

• Phone and internet plans with base rates plus overage charges
• Vehicle costs (fixed lease payment plus variable fuel and maintenance)
• Employee compensation with base salary plus performance bonuses
• Equipment leases with usage-based surcharges

Semi-variable costs can be tricky to budget for because they're partially predictable and partially dependent on business conditions.

Common Overhead Categories

Beyond the fixed/variable classification, overhead costs are often grouped by business function:

Administrative overhead — Bookkeeping, payroll services, HR costs, legal fees, accounting software subscriptions, and office management.

Selling overhead — Marketing campaigns, advertising spend, CRM software, trade show attendance, and promotional materials.

Research overhead — Consultant fees, product prototyping, market research, and testing services.

Transportation overhead — Employee travel, fleet maintenance, conference attendance, and commuting reimbursements.

Manufacturing overhead — Facility rent, equipment depreciation, quality control, and factory maintenance (these are indirect production costs, not the raw materials themselves).

How to Calculate Your Overhead Rate

Your overhead rate tells you how much overhead you're spending relative to your revenue or direct costs. It's one of the most important numbers for pricing decisions and profitability analysis.

Overhead Rate Based on Revenue

This is the simplest and most commonly used method:

Overhead Rate = (Total Monthly Overhead Costs / Total Monthly Revenue) × 100

Example: Your overhead costs total $8,000 per month, and your monthly revenue is $40,000.

$8,000 ÷ $40,000 × 100 = 20% overhead rate

This means that for every dollar you earn, 20 cents goes toward overhead.

Overhead Rate Based on Direct Labor Hours

This method is useful for service businesses and manufacturers who want to allocate overhead to specific projects or products:

Overhead Rate = Total Monthly Overhead / Total Direct Labor Hours

Example: Your monthly overhead is $15,000 and your team worked 600 billable hours.

$15,000 ÷ 600 = $25 per labor hour

If a project takes 20 hours, you'd allocate $500 in overhead costs to that project.

Overhead Rate Based on Direct Labor Costs

This method compares overhead to what you spend on the people doing the revenue-generating work:

Overhead Rate = (Total Overhead / Total Direct Labor Costs) × 100

Example: Your overhead is $12,000 per month, and your direct labor costs are $30,000.

$12,000 ÷ $30,000 × 100 = 40% overhead rate

For every dollar spent on direct labor, you're spending 40 cents on overhead.

Overhead Cost Per Unit

For product-based businesses, knowing the overhead cost embedded in each unit helps with pricing:

Overhead Per Unit = Total Overhead / Total Units Produced

Example: Annual overhead of $60,000 with 12,000 units produced.

$60,000 ÷ 12,000 = $5 overhead per unit

What's a Good Overhead Rate?

There's no universal answer, but here are some benchmarks:

• Under 25% is generally considered efficient for most small businesses
• 25–35% is typical and manageable
• Over 35% signals that overhead may be eating into your margins and deserves attention

Industry matters significantly. A consulting firm with minimal physical infrastructure might run at 15% overhead, while a manufacturing business with factory space and equipment could naturally be closer to 30–40%.

The most useful comparison is tracking your own overhead rate over time. If it's trending upward without a corresponding increase in revenue, that's a warning sign.

How Overhead Differs from Operating Expenses

People often confuse overhead with operating expenses, but they're not the same thing.

Operating expenses include everything it costs to run your business—both direct costs (like raw materials and production labor) and indirect costs (overhead).

Overhead is a subset of operating expenses. It includes only the indirect costs that aren't tied to specific products or services.

In formula terms:

Operating Expenses = Direct Costs + Overhead

Understanding the difference matters because your overhead rate tells you about the efficiency of your business infrastructure, while your total operating expenses tell you about the overall cost of doing business.

8 Strategies to Reduce Overhead Costs

Cutting overhead doesn't mean cutting corners. The goal is eliminating waste while maintaining (or even improving) the quality of your operations.

1. Audit Every Expense

Print out your profit and loss statement for the past 12 months and go line by line. You'll almost certainly find subscriptions you forgot about, services you're overpaying for, or expenses that no longer make sense. Many businesses discover they're paying for software tools that overlap in functionality or services they've outgrown.

2. Renegotiate Vendor Contracts

If you've been with the same suppliers, landlord, or service providers for years, ask about better rates. Vendors would rather give you a discount than lose your business entirely. Get competitive quotes and use them as leverage in negotiations.

3. Embrace Remote or Hybrid Work

Office rent is often the largest overhead line item. If your team can work remotely—even part of the time—you can downsize your space or eliminate it entirely. Businesses that switched to hybrid models have reported 20–30% reductions in facility-related costs.

4. Automate Administrative Tasks

Manual bookkeeping, invoicing, payroll processing, and data entry consume hours that translate directly into overhead costs. Automation tools can handle these tasks faster and with fewer errors. AI-powered tools are making this even more accessible, with businesses reporting 20–50% reductions in administrative overhead through automation.

5. Review Your Software Stack

Technology bloat is a growing problem for small businesses. Audit every subscription and ask: Do we actively use this? Could a single tool replace multiple subscriptions? Is there a lower-tier plan that meets our needs? Even $50 per month in unnecessary subscriptions adds up to $600 per year.

6. Go Green to Save Green

Energy-efficient lighting, smart thermostats, and paperless workflows reduce utility costs while also being better for the environment. Some utility companies offer free energy audits that can identify quick savings.

7. Use Freelancers and Contractors Strategically

Instead of hiring full-time employees for specialized tasks, consider building a blended team. Freelancers and contractors don't carry the overhead of benefits, office space, and equipment. This is especially effective for seasonal workloads or specialized skills you only need occasionally.

8. Track Overhead Monthly

You can't reduce what you don't measure. Make overhead tracking a monthly habit. Compare your overhead rate month-over-month and investigate any increases. Small changes compound—a 2% reduction in overhead rate can translate to thousands of dollars in annual savings.

Overhead and Taxes: Don't Leave Deductions on the Table

Many overhead expenses qualify as tax deductions, which effectively reduces their true cost to your business. Common deductible overhead includes:

• Rent and lease payments
• Business insurance premiums
• Office supplies and equipment
• Utilities
• Professional services (accounting, legal)
• Software subscriptions
• Business vehicle expenses

Keeping detailed, organized records of your overhead expenses ensures you claim every deduction you're entitled to. This is where good bookkeeping pays for itself—literally.

Simplify Your Overhead Tracking

Understanding and managing your overhead is crucial for building a profitable business. But tracking every expense across multiple categories can become overwhelming—especially as your business grows.

Beancount.io makes financial tracking transparent and effortless with plain-text accounting. Every transaction is readable, version-controlled, and ready for analysis—no proprietary formats or black boxes. Get started for free and take control of your overhead costs with a system that grows with your business.