Cash accounting records transactions when money moves. You send an invoice in January and get paid in March, the revenue shows up in March. You receive a bill in February and pay it later, the expense shows up when you pay it. Your books reflect what actually flowed through your bank account.

Accrual accounting records transactions when they happen regardless of when cash changes hands. That January invoice counts as January revenue even though payment arrives in March. The February bill counts as a February expense even if you pay it in April. Revenue and expenses match to the period they belong to.

For a small business with straightforward transactions, cash accounting works fine. It’s simpler to maintain and easier to understand at a glance. You look at your profit and loss and see something close to your actual cash position. Most small businesses start here because it makes sense for their size and complexity.

The problem with cash accounting shows up as your business grows. Say you complete a $15,000 project in December but don’t get paid until February. Under cash accounting, December looks worse than it was and February looks better than it was. Your monthly numbers bounce around based on payment timing rather than actual business performance. You can’t tell which months were truly profitable.

Accrual accounting solves this by showing revenue when you earned it and expenses when you incurred them. A construction company tracking job profitability needs to see costs against the project they belong to, not scattered across whatever months the bills got paid. Full-service bookkeeping on an accrual basis gives you financial statements that reflect real economic activity.

The IRS allows most small businesses to choose their method. If your average annual gross receipts stay under $29 million, you can generally use either one. Above that threshold or in certain industries with inventory, accrual becomes mandatory. Your accountant handles the tax election and makes sure you’re compliant.

Banks and lenders usually prefer accrual-basis financials when you apply for a loan or line of credit. Cash-basis statements can make a profitable business look unprofitable if a few large receivables haven’t come in yet. Accrual shows them the underlying business performance they need to evaluate.

Tax timing works differently under each method. With accrual, you might owe taxes on revenue you’ve billed but haven’t collected. That can create cash flow challenges if you’re waiting on slow-paying customers. This is where coordination with your accountant matters. You can sometimes use hybrid approaches or plan around the timing.

Most businesses don’t need to overthink this at the start. Cash works fine when you’re small and your transactions are simple. As you grow, New Jersey bookkeepers who understand your business can help you evaluate whether accrual makes sense and handle the transition when you’re ready. The important thing is having accurate books under whatever method you use and making sure your tax treatment is coordinated properly.