An accounting department has five core functions: paying bills (accounts payable), collecting money (accounts receivable), running payroll, producing financial reports, and maintaining financial controls. When all five run well, leaders get accurate numbers on time and the business avoids late fees, cash surprises, and fraud.
The five core functions at a glance
| Function | What it covers | What goes wrong without it |
|---|---|---|
| Accounts payable (money out) | Paying vendors and bills on time, capturing early-payment discounts | Late fees, strained vendor relationships, cash surprises |
| Accounts receivable (money in) | Invoicing customers, tracking what is owed, following up on late payments | Slow cash flow, uncollected revenue |
| Payroll | Paying employees accurately and on time, filing and paying payroll taxes | Penalties, unhappy employees, compliance risk |
| Financial reporting | Monthly close, profit and loss, balance sheet, cash flow, budgets | Decisions made on guesses instead of numbers |
| Financial controls | Reconciliations, approvals, separation of duties | Errors, fraud, failed audits |
1. Accounts payable
Accounts payable makes sure every bill is approved, recorded, and paid on time. A good AP process schedules payments to protect cash, avoids late charges, and takes advantage of early-payment discounts when they are worth it. It also keeps vendor records, like W-9 forms, current for year-end 1099 reporting.
2. Accounts receivable
Accounts receivable turns sales into cash. It covers sending accurate invoices promptly, tracking what each customer owes, and following up with friendly, consistent reminders. A monthly aging report shows which balances are overdue so collection issues are caught early.
3. Payroll
Payroll pays employees accurately and on schedule, withholds the right taxes, and files and pays them with federal and state agencies on time. In California, payroll also has to account for state-specific rules on overtime, final pay, and paid sick leave, so errors can be costly.
4. Financial reporting
Reporting is the reason the rest of the data is collected. A timely monthly close produces the profit and loss statement, balance sheet, and cash flow statement. Those reports drive budgeting, forecasting, and pricing decisions, and they are what banks, investors, and auditors ask to see.
5. Financial controls
Controls protect the business from errors and fraud. Core controls include monthly bank and credit card reconciliations, approval limits on spending, and separation of duties, so no single person can both approve and pay a bill. The controller typically owns this function.
Other functions, depending on your business
- Inventory and cost accounting
- Sales tax and business tax filings, coordinated with your CPA
- Budgeting and cash flow forecasting
- Audit and lender reporting
- Fixed asset tracking and depreciation
Signs your accounting department needs attention
- The monthly close takes more than two to three weeks, or does not happen at all.
- Leaders do not trust the numbers, or each report tells a different story.
- Bank accounts are not reconciled every month.
- One person handles payments, deposits, and reconciliations alone.
- Cash surprises happen, even when the business is profitable.
Who handles each function, and how the roles fit together, is covered in our companion article, Accounting Department Roles and Job Titles Explained.
Need help with your accounting?
Pacific Crest Group provides outsourced accounting, controller services, and financial reporting for companies across the Bay Area and the West Coast. Explore our Accounting & Finance services or schedule a call.