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Financial Literacy

Intro to Finance: The Foundation Every Contractor Needs

8 min readMarch 28, 2025By IronBooks Team
Intro to Finance: The Foundation Every Contractor Needs

Most trades companies struggle financially not because the work is bad — but because the owner doesn't understand the financial structure of the business. This module gives you the framework.

Purpose of This Module

This module introduces the financial side of running a trades company. Before diving into specific reports and systems, you need to understand how money flows through the business and how to interpret the numbers.

Most painting companies struggle financially not because the work is bad, but because the owner does not understand the financial structure of the business. The goal of this module is to give you the basic framework so the financial reports in the next modules make sense.

This is not financial advice. All information herein is for educational purposes only.

What We're Going to Cover

  • Why it is important to understand finances as a business owner
  • Key financial terms every owner should know
  • The main financial statements and what each one does
  • How the financial statements work together
  • Cash vs accrual accounting
  • Why running your business based on your bank account balance is a mistake
  • What successful financial management looks like in a trades company

Why It's Important to Understand Finances

Financial literacy allows you to make decisions based on numbers instead of assumptions. Without financial visibility, it becomes difficult to answer basic questions about the health of the business.

For example:

  • Are jobs actually profitable?
  • Are overhead expenses too high?
  • Is the company growing sustainably?
  • Is there enough cash to operate the business?

Many owners focus on sales and production, but finance determines whether those activities actually create profit. Two painting companies can generate the same revenue and have very different financial outcomes.

Same Revenue, Very Different Results

CompanyRevenueProfitProfit Margin
Company A$1,000,000$40,0004%
Company B$1,000,000$250,00025%

The difference is financial management.

Why You Should NOT Run Your Business on Your Bank Balance

Many trades company owners use their bank balance to judge whether the business is doing well. This creates inaccurate decision making. Your bank balance only shows cash at a single moment in time. It does not show profitability or upcoming obligations.

Several things can distort what your bank balance actually represents:

1. Deposits for Work That Has Not Happened Yet

Customer deposits may be sitting in the account, but that money still has to pay for labor and materials to complete the job. A deposit on work that isn't done yet is a liability — not an asset — meaning it is not your money until the work has been done (unrealized revenue).

2. Bills That Have Not Been Paid Yet

Expenses such as payroll, taxes, materials, or insurance may not have cleared the account yet. This is called "accounts payable." If you have $50k in your account but you owe $30k of it for payroll and materials, you only "actually" have $20k — but if you make decisions like you have $50k, you'll end up out of money.

3. Outstanding Invoices

You may have completed work but not yet collected the payment. This is accounts receivable — earned revenue that has not been collected. It is considered an asset even though it's not in your bank account yet.

4. Timing Differences (Cash Flow Lag)

Large expenses or payments may hit the account in a different month than the work actually occurred. Because of these timing differences, the bank balance often gives a misleading view of business performance. Financial reports such as the Profit & Loss statement, job costing, and cash flow tracking provide a much more accurate picture of how the business is actually performing.

Key Financial Terms

Before looking at reports, it is important to understand a few basic financial terms.

TermDefinition
Gross RevenueTotal money collected from completed jobs.
COGS (Variable Expenses)The variable expenses required to complete a job — labor, materials, subcontractors, rentals. Goes directly up or down depending on the job.
Gross Profit (Goal: 50%+)Revenue minus COGS. Shows how profitable your jobs are before overhead.
Overhead (Fixed Expenses)Costs to operate the business not tied to a specific job — office salaries, marketing, insurance, software, vehicles, rent.
Net Profit (Target: 15–25%)The money left over after all expenses are paid. Also referred to as EBITDA.

Financial Statements

Every business uses three core financial statements. Each report answers a different question about the business.

Profit & Loss Statement (P&L)

The P&L shows revenue, expenses, and profit. This report measures performance over a period of time — a month, quarter, or year. It answers the question: Is the company profitable? Ideally you are looking at your P&L monthly.

Balance Sheet

The balance sheet shows the financial position of the company at a specific point in time. Assets (what the business owns) minus Liabilities (what the business owes) = Owner's Equity. It answers the question: What does the company actually own vs. owe right now?

Cash Flow Statement

The cash flow statement tracks the movement of cash in and out of the business. It answers the question: Why did the bank balance increase or decrease? A company can be profitable on paper and still have cash flow problems. This report explains why.

How These Statements Work Together

Each report shows a different part of the financial picture. The P&L shows profitability. The Balance Sheet shows financial position. The Cash Flow Statement shows how money moves. All three reports work together to explain what is happening financially inside the company. Looking at only one of these reports often leads to incorrect conclusions.

Cash vs Accrual Accounting

There are two main ways financial transactions can be recorded.

Cash Accounting: Revenue and expenses are recorded when money actually moves. Best for businesses under $300k/yr. Simpler, but does not have the nuance needed as you scale.

Accrual Accounting: Revenue and expenses are recorded when the work actually occurs, regardless of when the money moves. Provides a more accurate view of business performance because revenue and costs are matched to the correct time period.

What Successful Financial Management Looks Like

A well-run trades company has clear financial visibility. The owner can quickly answer: What was revenue last month? What was gross profit on jobs? What were the total overhead expenses? What was net profit? How much cash is available?

Financial reports are reviewed regularly, not just during tax season. Decisions about pricing, hiring, and growth are based on real numbers.

What's Next

In the next modules we will break down the specific financial systems used to run the business, including job costing, Profit & Loss reports, balance sheets, cash flow management, and bookkeeping systems. These reports will give you a clear view of where the business is making money and where it is losing it.