You open your bank account and see $48,000. Your profit and loss report says you lost money last month. Or the reverse: the report shows a healthy profit, but you can barely cover payroll. If that mismatch sounds familiar, the culprit is often not a mistake at all. It is the accounting method your books use. Choosing between cash vs accrual accounting shapes how you see your business, what your taxes look like, and what lenders think of you.
This guide explains both methods in plain English, shows the same month of business under each, and gives a clear recommendation for most small businesses. If you would rather have someone set this up for you, our bookkeeping services cover method selection and clean setup.
What Is Cash Basis Accounting?
Under the cash method, you record income when money lands in your account and record expenses when money leaves it. Nothing else counts. An invoice you sent is not income yet. A bill you received is not an expense yet.
Example: you finish a $6,000 project on September 28 and invoice the client. They pay on October 15. On a cash basis, the $6,000 is October revenue, even though all the work happened in September.
What Is Accrual Basis Accounting?
Under the accrual method, you record income when you earn it and expenses when you incur them, regardless of when cash moves. That same $6,000 project is September revenue because September is when you did the work. The unpaid invoice sits on your balance sheet as accounts receivable. Bills you owe but have not paid sit as accounts payable.
Accrual accounting follows GAAP (Generally Accepted Accounting Principles) and the matching principle: revenue and the costs of producing it land in the same period, so your profit reflects reality.
Cash vs Accrual Accounting: Side-by-Side Comparison
- When revenue is recorded: Cash = when payment is received. Accrual = when the work is done or goods are delivered.
- When expenses are recorded: Cash = when you pay. Accrual = when you receive the bill or the cost is incurred.
- Complexity: Cash is simple and easy to follow. Accrual needs receivables, payables, and often adjusting entries.
- Accuracy of monthly profit: Cash can swing wildly with payment timing. Accrual gives a steadier, truer picture.
- Cash visibility: Cash basis mirrors your bank balance. Accrual does not, so you need a separate cash flow view.
- Typical user: Cash suits sole proprietors and service businesses. Accrual suits inventory-heavy, growing, or investor-backed companies.
A Real-World Example: One Month, Two Methods
Imagine a small marketing agency in October. It sends $20,000 of invoices, collects $12,000 (some from September work), pays $9,000 in bills, and receives another $4,000 in vendor bills due in November.
- Cash basis: Revenue $12,000 minus expenses $9,000 = $3,000 profit.
- Accrual basis: Revenue $20,000 minus expenses $13,000 ($9,000 paid plus $4,000 incurred) = $7,000 profit.
Neither number is wrong. They answer different questions. Cash tells you what actually moved through the bank. Accrual tells you how the business performed. The simplified figures above ignore prior-period items, but they show why the same company can look very different depending on method.
Pros and Cons of Each Method
Cash Basis
- Pros: Easy to maintain, intuitive, and often defers tax because you are not taxed on income you have not collected.
- Cons: Can hide unpaid bills and overdue invoices, makes month-to-month comparison unreliable, and many lenders and investors will not accept it.
Accrual Basis
- Pros: Accurate profit, better for budgeting and forecasting, required for GAAP-compliant financial statements, and expected by most banks.
- Cons: More bookkeeping work, and you can owe tax on revenue you have not yet collected.
Which Method Does the IRS Allow?
The IRS lets most small businesses choose, but not everyone. According to IRS Publication 538, you generally must use accrual if you are a C corporation (or a partnership with a C corporation partner) whose average annual gross receipts exceed the inflation-adjusted threshold, which is in the neighborhood of $30 million and updates each year. Tax shelters are also barred from the cash method. Check IRS.gov for the current figure.
Inventory adds a wrinkle. Businesses that hold inventory historically had to use accrual. Today, businesses under the gross receipts threshold can generally use the cash method and treat inventory as non-incidental materials and supplies or follow their book treatment under Section 471(c). The rules are technical, so confirm with a CPA before relying on this.
Once you pick a method, you must be consistent. Switching generally requires filing Form 3115 (Application for Change in Accounting Method) with the IRS. Do not flip methods just to chase a lower tax bill in a given year.
How to Choose the Right Method: A Step-by-Step Process
Our Recommendation
For a solo consultant or small service business with few receivables, cash basis is usually fine and keeps life simple. For anyone with inventory, recurring invoices, employees, loans, or growth plans, accrual is the better management tool even if you file taxes on a cash basis. Many businesses run accrual books for decision making and let their CPA handle any tax-basis adjustments at year-end.
Modern software makes this easier. QuickBooks Online and Xero both let you view reports on either basis with one click, so you can see profit both ways from the same data.
Common Mistakes to Avoid
- Mixing methods, such as recording some invoices when sent and others when paid.
- Forgetting to record unpaid bills on an accrual basis, which overstates profit.
- Assuming your accounting software settings automatically match your tax filing method.
- Switching methods without filing the required IRS paperwork.
Note: This article is general educational information, not tax or legal advice. Tax rules vary by entity type and change over time. Talk with a licensed CPA before choosing or changing your accounting method.
Frequently Asked Questions
Can I switch from cash to accrual accounting?
Yes, but for tax purposes you generally need IRS approval by filing Form 3115, and you may have to make a one-time adjustment (a Section 481(a) adjustment) to avoid income being counted twice or skipped. A CPA can guide the timing.
Is cash or accrual accounting better for a small business?
Neither is universally better. Cash is simpler and works for many small service businesses. Accrual gives more accurate performance data and is better when you have inventory, credit sales, or outside financing.
Which method do banks prefer?
Most lenders prefer accrual-based financial statements because they show receivables, payables, and true profitability. Small loans may accept cash-basis reports, but expect questions.
Can I use accrual for my books and cash for taxes?
Often yes, if your business qualifies for the cash method for tax purposes. Many companies manage internally on accrual and file on cash. Your CPA can confirm this is allowed for your entity and set up the reconciliation.
Not Sure Which Method Fits Your Business?
Picking the wrong method can mean misleading reports and avoidable tax surprises. Our team handles setup, ongoing online accounting, and monthly reporting for US small businesses. See our pricing or browse all services, then contact Ask For CPA today for a free consultation.
