Service Calls vs Project Work: Tracking Expenses for Each
A practical, data-backed guide to controlling costs and automating expense workflows.
To effectively track and differentiate expenses for short-duration service calls versus larger, multi-phase projects, it's essential to establish clear guidelines for labor, materials, and overhead allocation. This distinction is crucial for accurate job costing, profitability analysis, and informed pricing for future work. By implementing a standardized approach, small electrical contractors can ensure that expenses are accurately accounted for, reducing the risk of errors and misclassifications. For the bigger picture, see our guide to electrical contractor expense management software.

When to use project work
Project work is used for larger, multi-phase projects that require a more structured approach to estimating, billing, and tracking expenses. This type of work typically involves a more detailed scope of work, more complex materials and labor requirements, and often requires a longer project timeline.
When to use project work:
- When the scope of work is significantly larger than a standard service call, requiring more detailed materials and labor estimates.
- When the project timeline exceeds a standard service call duration, typically 1-2 weeks.
- When the project involves multiple phases or tasks, requiring a more structured approach to billing and expense tracking.
- When the project requires specialized equipment, materials, or labor, requiring a more detailed scope of work.
In contrast, service calls are typically used for short-duration, one-time work, such as repairs, installations, or maintenance tasks. These tasks often have a shorter project timeline and a more straightforward scope of work, making them more suitable for short-term, low-hanging fruit projects.
Allocating labor and materials
Assigning all costs (labor, materials, equipment, overhead) to a specific job number is essential for accurate tracking and comparison against estimates. This is a critical step in job costing, as it ensures that all expenses are properly accounted for and can be used to calculate profitability.
Labor burden includes not just wages but also payroll taxes, insurance, benefits, and other direct costs associated with an employee, which must be factored into job costing.
When allocating labor, consider the following:
- Direct labor costs (wages, benefits, etc.)
- Indirect labor costs (materials, equipment, etc.)
- Overhead costs (office expenses, utilities, etc.)
- Labor burden (total cost of hiring and paying employees)
By assigning all costs to a specific job number, contractors can ensure that their expenses are properly accounted for and can make informed decisions about pricing and profitability.
This information can be used to calculate the profit margin for the service call and make informed decisions about pricing and profitability.
Tracking expenses for each
Business records such as receipts, invoices, and credit card statements should be retained for at least three years to prove expenses.
A portion of home expenses can be deducted if a space is used regularly and exclusively for business. However, this deduction is limited to the business use percentage of the space. For example, if a contractor uses 20% of their home office for business, they can deduct 20% of their home expenses.
Ordinary and necessary business expenses, such as advertising, accounting fees, phone bills, and professional memberships, are deductible. These expenses are not subject to the same rules as home expenses and can be deducted without proof. Examples of deductible business expenses include equipment purchases, insurance premiums, and travel expenses.
In addition to tracking individual expenses, it's also essential to allocate labor and materials to each type of job. For example, a contractor may have a dedicated team for service calls and another team for projects.
For tracking expenses, contractors can use a simple chart or table to categorize their expenses. Here's an example:
In this example, the contractor has marked service calls as "Yes" and allocated labor, materials, and overhead accordingly.
By following these guidelines, small electrical contractors can accurately track expenses for each type of job and make informed decisions about pricing, profitability, and job costing.
Understanding the IRS standard mileage rate and per diem rate
For travel within the continental U.S. These rates apply to both business and personal use of the vehicle.
The IRS standard mileage rate is calculated based on the actual miles driven for business purposes, and it is used to determine the deduction for miles driven. The rate is subject to change annually, and it is available for use in the tax year in which it is implemented.
For example, if a business owner drives 2,000 miles for business in 2024, they can deduct up to 67 cents per mile.
It is essential for small electrical contractors to understand and track the IRS standard mileage rate and per diem rate to accurately claim the deductions for their business expenses. This will help them to optimize their profitability, plan for future expenses, and make informed decisions about their business operations.
Tax rules, limits and rates change. Confirm current figures with the IRS or your accountant before you file.
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