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The twelve categories

Overhead and break-even

Compiled by the Sitonce editorial team from the PSI Candidate Information Bulletin, NASCLA's own published material and the federal standards named belowUpdated 2 min readFacts verified 4 September 2026
The short answer

Overhead is the cost of running the business that cannot be charged to any single job. Break-even is the revenue at which contribution covers fixed cost, and every job must carry a share of overhead to reach it.

The reason profitable-looking jobs can add up to an unprofitable year.

What overhead is

Everything the business costs that you cannot charge to one job. The office, the estimator, the accountant, general insurance, the truck that visits every site, licensing fees.

It is incurred whether or not you win work, which is what makes it dangerous.

Why it has to be recovered per job

Because there is nowhere else for it to come from. If your markup covers direct cost and profit but not overhead, every job contributes to a loss.

This is how contractors go under while busy

A firm winning plenty of work at a markup that does not carry overhead loses more money the busier it gets. Volume accelerates the problem rather than solving it, and that is counterintuitive enough to make a good exam question.

Break-even

The revenue at which contribution equals fixed cost. Below it the year loses money regardless of how any individual job looked.

Contribution is revenue less variable cost. Fixed cost is overhead. Divide one by the other and you have the volume you must do to stand still.

The ratios

RatioFormulaTells you
Current ratioCurrent assets over current liabilitiesWhether you can pay near-term bills
Working capitalCurrent assets less current liabilitiesThe cushion in absolute terms
Break-evenFixed cost over contribution marginThe revenue needed to cover overhead

Sureties and licensing boards both look at these. A state may require a minimum net worth or working capital as a licensing condition.

Why the exam cares

Because a contractor who cannot read their own financial position is a risk to owners and subcontractors. The business material on this paper is there for the same reason bonding exists. It has to be recovered. Busier makes it worse. Volume will not fix it.

Common questions

What is overhead?

The cost of running the business that cannot be charged to any single job, such as the office, estimator and general insurance.

How is overhead recovered?

Through the markup on every job. If the markup does not carry it, every job contributes to a loss.

What is break-even?

The revenue at which contribution equals fixed cost, calculated as fixed cost divided by contribution margin.

What is the current ratio?

Current assets divided by current liabilities, showing whether near-term bills can be paid.

Why does the exam test financial ratios?

Because a contractor who cannot read their own position is a risk to owners and subcontractors, which is also why bonding exists.