Cash and Accrual Accounting: The Complete 7-Point Guide for Small Business Owners

What Are Cash and Accrual Accounting?

Cash and accrual accounting are the two methods businesses use to record financial transactions. They differ on one fundamental question: when does the transaction get recorded? Under cash basis accounting, you record revenue when money arrives and expenses when money leaves. Under accrual basis accounting, you record revenue when it's earned and expenses when they're incurred, regardless of when cash changes hands. Which method you choose affects your tax return, your financial statements, and how clearly you can see your business's financial health at any given point.

This is general information, not tax advice. Consult a qualified accounting professional about your specific situation before changing your accounting method.

How Cash and Accrual Accounting Work

Cash Basis Accounting

Cash basis accounting is exactly what it sounds like. You invoiced a client in December but didn't collect until January? That revenue lands in January under cash accounting. You received a supplier bill in March but paid it in April? The expense shows up in April.

This method is straightforward to maintain. It maps directly to your bank balance, which makes cash flow easy to read. The limitation is that it doesn't show you what clients owe you, what you owe suppliers, or how your business actually performed in any given period.

Accrual Basis Accounting

Accrual basis accounting records revenue when it's earned and expenses when they're incurred. That December invoice goes into December's records, even if you collect in January. The March supplier bill goes into March, even if you pay in April.

This method follows GAAP and produces a more accurate picture of profitability by period. It requires tracking accounts receivable, accounts payable, prepaid expenses, and deferred income. The trade-off is greater bookkeeping complexity every month.

Accrual accounting shows what your business earned and owed in a given period. Cash accounting shows what moved through your bank account. Neither is wrong, but only one tells the full financial story.

7 Key Differences Between Cash and Accrual Accounting

Here's how the two methods compare across the areas that matter most to a business owner.

Advantages and Disadvantages of Each Method

Cash Basis Accounting

Advantages:

• Easy to implement and maintain, especially for businesses with limited accounting resources

• No need to track outstanding receivables or payables each month

• Bank balance directly reflects available cash at any point

• Lower bookkeeping overhead month to month

Disadvantages:

• Doesn't show a complete picture of what your business earned or owes

• Not GAAP compliant, so it's unsuitable for external financing or audited financial statements

• Seasonal income swings can distort your profit and loss results

• Can't accurately track what clients owe you or what you owe suppliers

Accrual Basis Accounting

Advantages:

• GAAP compliant and required for audited financial statements

• More accurate picture of profitability across periods

• Tracks accounts receivable and accounts payable for better financial planning

• Required by lenders, investors, and auditors for larger or externally funded businesses

Disadvantages:

• More complex to implement and maintain

• Doesn't directly show cash flow, so a separate cash flow statement is essential

• Requires dedicated bookkeeping to track accruals, deferrals, and prepaid items correctly

IRS Rules: Which Accounting Method Does Your Business Have to Use?

Are you required to use one method over the other? For many small businesses, the answer depends on your size, structure, and whether you carry inventory. According to IRS Publication 538 on Accounting Periods and Methods, businesses that fall below the IRS gross receipts threshold may use cash basis accounting. Businesses above that threshold, C corporations, partnerships with C corporation partners, and businesses with inventory held for sale to customers must generally use accrual basis accounting.

Two common situations that require accrual accounting regardless of size:

• Businesses involved in long-term contracts where revenue spans multiple periods

• Businesses that carry inventory and sell goods to customers

Switching accounting methods after you've adopted one requires IRS approval via Form 3115 (Application for Change in Accounting Method). This is not a self-service change. Get qualified guidance before you file.

Not sure which threshold applies to your business in the current tax year? Check IRS Publication 538 or speak with your tax professional before making a decision.

How to Convert Between Cash and Accrual Accounting

What does a conversion actually involve? The steps differ depending on which direction you're moving. In both cases, you need IRS approval first, and the adjustments must flow through your opening retained earnings or the current-year accounts depending on whether they're transition or year-end adjustments.

Converting from Cash Basis to Accrual Basis Accounting

Converting to accrual means adding items that cash accounting ignored. Work through these four adjustments.

1. Accrued expenses: Record expenses incurred but not yet paid, including unpaid wages, materials received but not billed, and outstanding supplier invoices. Debit the expense account, credit accounts payable.

2. Prepaid expenses: Identify cash payments that cover future periods, such as advance rent. Shift the unused portion into a prepaid expense asset and reduce the current-period expense accordingly.

3. Accounts receivable: Record sales made on credit for which no cash has arrived yet. Debit accounts receivable, credit the revenue account for the correct period.

4. Deferred income: If customers paid in advance, that cash isn't revenue yet. Move it from revenue to a deferred income liability until the goods are delivered or the service is performed.

Converting from Accrual Basis to Cash Basis Accounting

Converting back to cash means removing accrual entries and aligning everything with actual cash movement.

1. Reverse accrued expenses: Remove any expenses recorded but not yet paid. Debit accounts payable, credit the expense account. Shift recognition to the period when you actually pay.

2. Remove prepaid expenses: Shift prepaid assets back to expenses in the period when cash was originally paid out.

3. Remove accounts receivable: Reverse credit sales not yet collected and shift the revenue into the period when cash is actually received.

4. Clear deferred income: Move advance customer payments from the deferred income liability into revenue in the period when cash was received.

Can your current bookkeeping setup handle these adjustments cleanly? If you're converting methods, the risk of errors in period assignments and retained earnings entries is real. Getting the accounting setup right before you file reduces the correction work significantly.

Which Method Is Right for Your Business?

Cash and accrual accounting each serve a purpose. Cash basis works well for small, simple operations where ease of maintenance and direct cash flow visibility matter most. Accrual basis is the right choice for growing businesses, those carrying inventory, and any business that needs GAAP-compliant financials for lenders, investors, or auditors. The IRS also removes the choice for certain business types above the gross receipts threshold.

If you're setting up your books for the first time or need to switch methods, getting the structure right from the start saves significant corrective work later. The team at BusAcTa Advisors can help you set up and maintain your books under either method. Our bookkeeping services and accounting services are built around your business's actual needs. Contact BusAcTa Advisors to talk through the right method and setup for your situation.