Lines of Credit and Cash Flow: What Borrowing Actually Does to Your Books

Sundered Oak

Sep 11

3 min read

A line of credit can be a genuinely useful tool for a small business. It can smooth out cash flow gaps, cover payroll during a slow month, or help you take on a bigger job than you could otherwise fund. But from a bookkeeping perspective, borrowing money has consequences that aren't always obvious until they start showing up as problems.

Here's what to understand about how debt affects your cash flow - and your books.

A Line of Credit Is Not Income

This sounds obvious, but it trips people up constantly. When you draw on a line of credit, that money shows up in your bank account and can feel like revenue. It isn't. It's a liability - money you owe back, with interest. Recording it correctly matters, because if it gets miscategorized as income, your books will look better than they are and you'll potentially pay taxes on money you borrowed.

The Real Cost Isn't Just the Interest Rate

When you're evaluating whether to borrow, the interest rate is only part of the picture. What actually matters for your day-to-day cash flow is the payment - how much is leaving your account every month, and what does that do to your ability to cover everything else?

This is where a lot of small businesses get into trouble. The payment feels manageable when you take out the loan, but stack a few of them together - a line of credit, an equipment loan, maybe a merchant cash advance - and suddenly a significant chunk of your monthly revenue is going straight to debt service before you've paid a single operating expense.

What to Watch For in Your Books

If you have a bookkeeper, ask them to show you your total monthly debt payments as a percentage of your revenue. There's no magic number that works for every business, but if that percentage is climbing, it's worth paying attention to.

Other warning signs:

Drawing on your line of credit to cover regular operating expenses month after month
Paying off your line of credit and then immediately needing to draw on it again
Taking on new debt to cover existing debt payments

These patterns don't always mean disaster, but they do mean something in the business model or cash flow cycle needs attention.

Recording Debt Correctly

Every loan and line of credit should be set up as a liability account in your books. Payments need to be split correctly between principal (which reduces the liability) and interest (which is an expense). If your loan payments are being recorded incorrectly, your balance sheet is wrong and your expense reports are misleading.

For the Strategy Side, Talk to a Pro

Whether to take on debt, how much is appropriate for your business, and how to evaluate loan terms are questions for your CPA or a financial advisor who knows your full picture. What a bookkeeper can do is make sure the debt you do take on is recorded correctly and that you can see clearly what it's costing you every month.

This post is for general informational purposes only and does not constitute legal or tax advice. Consult a qualified professional for guidance specific to your situation.