Bookkeeping is the systematic recording of your business’s financial transactions. Done consistently, it gives you accurate, real-time insight into your business’s financial health. Done poorly — or not at all — it creates tax problems, cash flow surprises, and the kind of year-end scramble that costs far more in accounting fees than consistent monthly bookkeeping would have.
This guide explains bookkeeping fundamentals in plain English — what the core concepts are, what the process looks like, and when it makes sense to do it yourself versus hire a professional.
Need help setting up your bookkeeping system? Call (801) 927-1337 or email admin@cpaone.net.
The Purpose of Bookkeeping
Bookkeeping serves three audiences:
- You (the business owner): Accurate books tell you whether you’re making money, how much cash you have, who owes you money, what you owe, and whether this month is better or worse than last month. Without this information, you’re flying blind.
- Your CPA: Your accountant prepares your tax return from your financial records. Clean, organized books make tax preparation faster, cheaper, and more accurate. Disorganized records lead to missed deductions, errors, and higher accounting fees.
- The IRS: The IRS requires businesses to maintain records sufficient to support their tax return for a minimum of 3 years (7 years recommended). Inadequate records during an audit result in disallowed deductions.
The Five Core Bookkeeping Concepts
1. Assets
What your business owns: cash, accounts receivable (money customers owe you), inventory, equipment, vehicles, prepaid expenses. Assets are listed on your balance sheet.
2. Liabilities
What your business owes: accounts payable (money you owe vendors), credit card balances, loans, accrued expenses, deferred revenue. Liabilities are also on the balance sheet.
3. Equity
The owner’s interest in the business: initial capital contributions plus retained earnings minus owner draws. Equity = Assets minus Liabilities.
4. Revenue
Income earned from your business’s primary activities: sales, service fees, consulting income. Revenue is recorded on the income statement (P&L).
5. Expenses
Costs incurred to operate the business: payroll, rent, utilities, supplies, insurance. Expenses reduce your net income and are also on the P&L.
The relationship between these five elements is captured in two fundamental equations:
- Balance Sheet: Assets = Liabilities + Equity
- Income Statement: Revenue − Expenses = Net Income (which flows into Equity)
Double-Entry Bookkeeping
Every financial transaction has two sides — a debit and a credit. Double-entry bookkeeping records both sides of every transaction, ensuring the accounting equation always stays balanced.
Simple example: You pay $500 for office supplies with your business debit card.
| Entry | Account | Amount | Effect |
|---|---|---|---|
| Debit | Office Supplies Expense | $500 | Increases expense |
| Credit | Cash/Bank | $500 | Decreases asset |
You don’t need to manually enter debits and credits in modern accounting software — the software handles this automatically. But understanding that every transaction has two sides helps you understand why your bank balance and your accounting software balance can differ (timing differences, unrecorded transactions, errors).
The Chart of Accounts
Your chart of accounts (COA) is the master list of all categories used to classify transactions. Every revenue dollar and every expense dollar is assigned to a specific account. A well-structured COA makes your financial reports meaningful; a poorly structured one makes them useless.
Standard COA Structure:
| Range | Category | Example Accounts |
|---|---|---|
| 1000s | Assets | 1000 Cash, 1100 Accounts Receivable, 1500 Equipment |
| 2000s | Liabilities | 2000 Accounts Payable, 2100 Credit Card Payable, 2500 SBA Loan |
| 3000s | Equity | 3000 Owner’s Capital, 3100 Owner’s Draw, 3900 Retained Earnings |
| 4000s | Revenue | 4000 Service Revenue, 4100 Product Sales |
| 5000s | Cost of Goods Sold | 5000 Materials, 5100 Direct Labor |
| 6000s–9000s | Operating Expenses | 6000 Payroll, 6100 Rent, 6200 Insurance, 6300 Marketing |
For tax return alignment, your expense accounts should map to the categories on your tax return — Schedule C lines, Form 1120-S lines, etc. We configure this mapping during accounting system setup.
The Monthly Bookkeeping Process
Week 1: Transaction Categorization
Review all transactions that imported from your bank and credit card feeds. Categorize anything that wasn’t automatically categorized by a bank rule. Attach receipts to expenses over a threshold (typically $50+).
Week 2–3: Accounts Receivable and Payable
- Send invoices for completed work
- Review AR aging — follow up on invoices over 30 days past due
- Approve and pay vendor bills due in the current period
Month-End: Bank Reconciliation
Compare your accounting software’s cash balance to your actual bank statement. Every difference must be identified and explained: outstanding checks, deposits in transit, bank fees not yet recorded, errors. A reconciled balance sheet means your books can be trusted.
Month-End: Financial Report Review
Generate and review your P&L and balance sheet. Ask: Is revenue tracking to plan? Are any expense categories running significantly over budget? Is cash increasing or decreasing? What does the balance sheet tell me about my financial position?
See also: our guide to understanding financial statements for how to read and interpret these reports.
Key Documents to Retain
- Receipts: For every business expense; IRS requires documentation of business purpose, amount, date, and vendor. Mobile receipt capture apps eliminate paper receipts — see our paperless accounting guide.
- Bank and credit card statements: Retain for 7 years.
- Invoices sent: Retain with payment records for 7 years.
- Vendor invoices: Retain with payment records for 7 years.
- Contracts and agreements: Retain for the life of the agreement plus 7 years.
- Payroll records: Retain for 4 years minimum (7 recommended).
- Tax returns: Retain indefinitely.
DIY Bookkeeping vs. Hiring a Professional
When DIY makes sense:
- Very early stage, simple transactions, low volume
- You have a financial background or are willing to invest time in learning
- Your books have a consistent, simple structure that doesn’t require judgment
When to hire a bookkeeper or CPA:
- More than 50–75 transactions per month
- You have employees (payroll adds significant complexity)
- You’re making business decisions based on your financial data
- You’ve fallen behind and have months of uncategorized transactions
- Tax season reveals errors in your books consistently
For most Utah small businesses past their first year, the cost of professional bookkeeping is less than the CPA’s time correcting DIY errors at year-end. See our full-service bookkeeping and monthly bookkeeping services for how we structure ongoing support.
Build a Bookkeeping System That Works for Your Business
Good books don’t require an accounting degree — they require a consistent system, the right software, and human oversight. FJ & Associates can set up your system, handle the ongoing work, or review your DIY books quarterly.
Call (801) 927-1337 | Email admin@cpaone.net | 612 N Kays Dr Suite 120, Kaysville, UT 84037
Related Guides:
- How to Read & Understand Financial Statements
- Guide to Bank Account Reconciliation
- Small Business Budgeting Guide
- Cloud Accounting Software Comparison
- Paperless Accounting for Small Businesses
Missy Dennis, CPA | Partner | FJ & Associates, PLLC | Kaysville, Utah. Missy holds a Master of Accounting degree from the University of Utah and is a licensed Certified Public Accountant. She is committed to providing clear, accurate, and actionable guidance so clients can navigate complex financial decisions with confidence. With more than twenty years of public accounting experience, Missy Dennis specializes in: tax preparation and tax advisory; bookkeeping strategy alignment; estate and trust taxation; audit and consulting services; low-income housing tax credits; non-profit accounting; and small- and mid-sized business advisory.
