When you set up your business accounting, one of the first decisions you make is which accounting method to use. Cash basis or accrual basis. Most small businesses choose cash basis without thinking much about it — and for most small businesses, that's the right choice. But understanding why, and when it might not be, is worth a few minutes.
What Cash Basis Accounting Is
Under cash basis accounting, you record income when you actually receive the money and expenses when you actually pay them.
If you complete a project in December and the client pays you in January, that income doesn't appear on your December books — it shows up in January when the cash arrives. If you receive a bill in December but pay it in January, the expense is recorded in January.
This makes cash basis intuitive and easy to reconcile. Your books closely mirror your bank account.
What Accrual Basis Accounting Is
Under accrual basis accounting, you record income when it's earned — regardless of when you receive payment — and expenses when they're incurred — regardless of when you pay them.
The December project completion gets recorded as income in December even though the cash doesn't arrive until January. The December bill gets recorded as an expense in December even though you pay it in January.
Accrual accounting gives a more accurate picture of your actual profitability in a given period. If you completed $80,000 of work in December but only received $30,000 in cash, cash basis shows $30,000 in December revenue while accrual shows $80,000.
Your accounting method affects both your taxes and how well you can read your own numbers. Talk through which one suits your business.
Tax Implications
The accounting method you use affects when you pay taxes on income.
Under cash basis, you don't recognize income until you receive it. This gives you some control over your tax liability — if you're heading into December with more income than expected, you might defer some invoices to push the income into next year.
Under accrual basis, income is recognized when earned regardless of receipt. You could owe tax on income you haven't yet collected — which creates cash flow pressure, particularly for businesses with slow-paying clients.
For most small businesses, cash basis is more tax-friendly because it aligns taxable income with actual cash flow.
Who Has to Use Accrual
Businesses with average annual gross receipts over $32 million for the prior three tax years (the 2026 threshold) are generally required to use the accrual method. Most small businesses are well below this threshold.
If your business is below that threshold and doesn't have significant inventory complexity, cash basis is almost certainly available to you.
When Accrual Makes More Sense Even If Not Required
There are situations where choosing accrual basis produces a more useful picture of your business.
If you have significant accounts receivable and accounts payable, accrual accounting shows a more accurate picture of your actual financial position. A business with $200,000 in completed but unpaid work looks profitable on an accrual basis. On cash basis it might look like it's struggling.
If you're seeking outside financing, investors or lenders often prefer or require accrual-based financial statements because they show economic reality more accurately.
Switching Methods
You can switch accounting methods but it requires IRS approval via Form 3115. Switching creates a transition year adjustment that can have significant tax consequences.
The mechanics can be complex and the tax impact can be substantial. If you're considering switching, model the impact with your accountant before filing the change.
Consistency Matters
Whichever method you choose, the IRS requires consistency. You can't switch back and forth from year to year to optimize your tax position. Once you establish a method, you use it consistently until you formally change it with IRS approval.
For most small businesses, cash basis is the right starting point — it's simpler, it's more intuitive, and it generally produces a more favorable tax outcome.
New business clients hear about this during their initial setup conversation with us. Your business model, your growth trajectory, and how you plan to use your financial statements should decide the method.