Can I switch from Cash to Accrual later?

Yes, but it requires IRS approval. You generally must file Form 3115 (Application for Change in Accounting Method) with the IRS. Because this can be a complex process, it is best to choose the right method for your business model from the very beginning.

If I use Accrual, do I pay tax on money I haven't received?

Yes. If you invoice a client for $10,000 in December, but they don't pay you until January, that $10,000 is considered taxable revenue in December under the accrual method. You will owe taxes on it for that year, even though the cash isn't in your bank account yet.

Am I required to use the Accrual method?

The IRS generally requires C-Corporations and businesses with inventory (like a retail store) to use the accrual method if their gross receipts exceed a certain threshold (around $30 million on average over the prior 3 years). Most small service-based LLCs are free to use the cash method.

Which method does QuickBooks use?

QuickBooks Online allows you to toggle between both. You can record transactions using the accrual method (creating invoices and bills), but then click a single button to generate a Cash-basis Profit & Loss report for your CPA at tax time.

Cash vs. Accrual Accounting for LLCs: Which is Better?

Accounting is simply the process of recording the financial story of your business. But there are two very different ways to tell that story: the Cash method and the Accrual method. The difference comes down to timing—specifically, exactly when you record a transaction in your books.

Your choice profoundly impacts how much tax you pay in a given year and how clearly you understand the financial health of your business.

1. The Cash Method

The cash method is simple and intuitive. You record income only when you actually receive the money in your bank account, and you record expenses only when the money actually leaves your bank account.

Pros: It is incredibly easy to maintain. Your books will always match your bank statement exactly. It also protects your cash flow at tax time—you never have to pay tax on money you haven't received yet.
Cons: It can give you a false sense of security. If your bank account shows $20,000, you might feel rich—even if you owe a supplier $18,000 next week.

The vast majority of small businesses, freelancers, and single-member LLCs use the cash method because of its simplicity.

2. The Accrual Method

The accrual method is more complex. You record income when you earn it (even if you haven't been paid yet), and you record expenses when you incur them (even if you haven't paid the bill yet).

This method introduces two new concepts: Accounts Receivable (money clients owe you) and Accounts Payable (money you owe to vendors).

Pros: It provides a much more accurate picture of your company's true financial health. It matches revenues to the exact expenses incurred to generate that revenue, giving you a perfect view of your profit margins.
Cons: It requires more bookkeeping work. You also risk paying taxes on "phantom income." If you invoice a client in December but they don't pay until February, you still owe the IRS taxes on that invoice for the prior year.

Venture-backed startups, companies carrying large amounts of physical inventory, and businesses planning to be acquired almost exclusively use the accrual method.

3. Example: A $5,000 Project

Let's look at how the exact same project is handled differently under each method.

Imagine you run a marketing agency. On November 1st, you sign a contract for a $5,000 project. You do the work in November and incur $1,000 in software costs to complete the project, which you put on a credit card. You finish the work and send the invoice on December 15th. The client finally pays the invoice on January 10th of the following year. You pay off the credit card on January 15th.

Under the Cash Method:

Year 1 (Nov/Dec): You show $0 in revenue and $0 in expenses. (You haven't received the cash or paid the credit card yet).
Year 2 (Jan): You show $5,000 in revenue and $1,000 in expenses. Your profit for Year 2 is $4,000.

Result: You pay zero tax in Year 1.

Under the Accrual Method:

Year 1 (Nov/Dec): You show $5,000 in revenue (because you earned it by sending the invoice) and $1,000 in expenses (because you incurred the software cost). Your profit for Year 1 is $4,000.
Year 2 (Jan): You show $0 in revenue and $0 in expenses. (The cash movement in January just clears out the Accounts Receivable and Accounts Payable balances).

Result: You owe taxes on $4,000 of profit in Year 1, even though you didn't receive the cash until Year 2.

The IRS Doctrine of Constructive Receipt

Even under the cash method, you cannot play games with the IRS. If a client hands you a check on December 30th, you cannot hold it in your desk drawer until January 2nd to defer the taxes. The IRS uses the doctrine of "constructive receipt"—meaning the income is taxable as soon as it is made available to you without restriction, regardless of when you actually deposit it.

4. Which Method Should You Choose?

If you are a service-based business (consultant, designer, writer) or a very small LLC with no inventory, choose the Cash Method. The administrative ease and tax-deferral benefits are too good to pass up.

If you are building a SaaS company, a retail store with heavy inventory, or a business you intend to sell to private equity within 5 years, choose the Accrual Method. Investors and banks will demand accrual-basis financial statements because they are the only true measure of the company's performance.