If there's one thing I've learned from working with contractors, it's this:
Most contractors know their jobs better than anyone.
They know materials.
They know labor.
They know scheduling.
They know how to get work done.
But many struggle with one thing:
Understanding the numbers behind the business.
And I get it.
When you're managing crews, suppliers, customers, estimates, change orders, and job sites, bookkeeping usually isn't at the top of your priority list.
The problem is that a contractor can stay busy all year and still be disappointed with their profit.
That's why I encourage every contractor to pay attention to five specific numbers.
This is one of the most important numbers in the contracting business.
Gross profit tells you how much money remains after paying direct job costs such as:
Labor
Materials
Subcontractors
Equipment rentals
The mistake many contractors make is focusing only on revenue.
Landing a $50,000 job sounds great.
But if the job costs $47,000 to complete, there's not much profit left over.
I always tell contractors:
Revenue pays attention to size. Profit pays attention to efficiency.
Labor is usually one of the largest expenses for contractors.
That's why it's important to know:
What labor costs per job
Whether labor estimates were accurate
Which jobs are consistently profitable
Which jobs are regularly going over budget
I've seen contractors lose money on projects simply because labor hours weren't tracked closely enough.
When labor costs are monitored properly, pricing becomes much more accurate.
In simple terms:
Who owes you money?
Many contractors struggle with cash flow because completed work hasn't been paid for yet.
I've worked with contractors who thought they had a sales problem when the real issue was that thousands of dollars were sitting in unpaid invoices.
Ask yourself:
Which invoices are overdue?
Which customers consistently pay late?
How much money is currently owed to the business?
Improving collections can often improve cash flow faster than finding a new customer.
This is where profits quietly disappear.
Contractors often focus heavily on job costs but forget about overhead.
These expenses include things like:
Vehicle expenses
Insurance
Software subscriptions
Office expenses
Phones
Advertising
Fuel
Professional services
Individually, these costs may seem manageable.
Combined, they can have a major impact on profitability.
That's why reviewing overhead regularly is so important.
This may sound obvious, but many contractors confuse profit with cash.
They're not the same thing.
A project may show a profit on paper, but if payment hasn't been received yet, cash flow can still be tight.
That's why I recommend paying attention to:
Bank balances
Upcoming expenses
Payroll obligations
Vendor payments
Future cash needs
Cash flow is what keeps the business operating day-to-day.
One of the biggest mistakes I see is estimating jobs based on what "feels right."
A contractor may say:
"That's about what we charged last year."
The problem is that:
Material costs change
Payroll costs change
Fuel costs change
Insurance costs change
If pricing doesn't keep pace with expenses, profit margins start shrinking.
And it's often not obvious until months later.
One of the most powerful tools a contractor can use is job costing.
Job costing allows you to answer questions like:
Which jobs were most profitable?
Which jobs lost money?
Where did labor run over budget?
Which services should be priced differently?
Without job costing, you're guessing.
With job costing, you're learning from every project.
I've noticed something about successful contractors.
They don't necessarily spend more time in the office.
But they do understand their numbers.
They know:
Their margins
Their labor costs
Their outstanding invoices
Their overhead
Their cash position
Those numbers help them make better decisions about hiring, pricing, equipment purchases, and growth.
Contracting is hard work.
Margins can be tight.
Costs can change quickly.
And cash flow can be unpredictable.
That's why accurate bookkeeping is so important.
When your books are current and your reports are accurate, you gain visibility into what's really happening inside the business.
And when you understand your numbers, you're in a much stronger position to protect your profits and grow with confidence.
At DJO Bookkeeping, I help contractors and small business owners organize their books, track profitability, understand cash flow, and make informed business decisions.
Whether you need monthly bookkeeping, QuickBooks cleanup, account reconciliations, catch-up bookkeeping, or help understanding your financial reports, I'm here to help.
Disclaimer: This article is for informational purposes only and is not accounting, tax, financial, or legal advice.