The most dangerous assumption in transportation isn’t about freight rates or fuel prices.

It’s assuming profitability equals liquidity.

Transportation companies fail or stall not because they aren’t generating revenue, but because they miscalculate how much accessible cash they truly need. That’s why we advise transportation and logistics companies to maintain a cash reserve equal to 10–30% of annual revenue.

This isn’t a rule of thumb. It’s a risk-management strategy.

What Is a Cash Reserve, and What Is It Used For?

A cash reserve is a portion of your revenue set aside to navigate obstacles in your path to profitability or to seize unforeseen opportunities. A cash reserve is not “extra cash.” It’s strategic capital.

Cash reserves protect your business from three predictable realities of the transportation and logistics industry:

• Payment delays and accounts receivable drag
• Market volatility and fuel fluctuations
• Growth that demands cash before it produces it

Without sufficient reserves, even strong companies are forced into reactive decisions — drawing on a line of credit or other forms of debt, delaying hiring, straining vendor relationships, or missing growth opportunities.

Your ideal cash reserve will fall somewhere between 10-30% of your annual revenue depending on your risk tolerance and other business factors. Companies operating with stable contracts, diversified customers, and disciplined cost control can often operate safely around 10% (roughly two months of expenses). Companies experiencing revenue swings, high customer concentrations, long receivable cycles, or growth initiatives should target closer to 30% (approximately six months of expenses). Exactly where you fall on that spectrum is a decision you make with your financial leadership, whether that’s an in-house team or an outsourced or Virtual CFO.

The question is not, “which number is right?”

The question is, “how much volatility can your business absorb without losing control?”

If you want to play it safe, you can always aim to set aside 30% to give your company a little wiggle room in case of a catastrophe (or a once in a lifetime opportunity) comes your way.

Also bear in mind not all transportation companies will be able to set aside that amount of cash right away. This is more a goal to strive for rather than an absolute marker of “business safety.”

How Do I Calculate My Ideal Cash Reserve?

Here is the framework we use with transportation clients:

Step 1: Annual Revenue ÷ 365 = Average Daily Revenue
Step 2: Accounts Receivable Days – Accounts Payable Days = Cash Usage (or the amount of time you need to have your bills (AP) covered before your cash comes back in the door (AR))
Step 3: Daily Revenue × Cash Gap = Ideal Cash Reserve

Example:

For example, a $3.5 million transportation company might aim to have anywhere from $350K to $1 million set aside depending on their risk profile and tolerance.

No matter where you fall on the 10-30% spectrum, it’s a good idea to secure a line of credit in the same amount as your cash reserve—and do so well before you need it. A line of credit can be a lifesaver if your short-term cash flow shows that your accounts payable will exceed your accounts receivable for a period of time. You can pay it off once the cash comes in, but in the meantime, it helps keep your vendors and employees satisfied.

Keep Your Cash Reserve in a Separate Account

After determining your cash reserve target, we suggest gradually building toward it and keeping it in a separate account from your tax and operating accounts. Treat your reserve as a distinct entity in a high-interest savings account, money market, or CD keeping it out of sight and out of mind.

After all, why wouldn’t you want to make money just by keeping your reserve set aside?

A Conversation Worth Having

The 10–30% question isn’t really about percentages.

It’s about leadership.

Are you building a company that reacts to volatility — or one that absorbs it?

Are you funding growth deliberately — or hoping cash flow keeps up?

Transportation companies that treat liquidity as a strategic asset outperform those that treat it as leftover cash.

If you’re unsure whether your reserve aligns with your company’s risk profile and growth trajectory, that’s a conversation worth having. A disciplined cash strategy doesn’t just protect your business — it positions it to lead.

Looking for more financial strategies to accelerate progress on your business growth plan? Take our Profit-Focused Maturity Assessment for Transportation Companies to evaluate your financial processes, cash flow management, forecasting, and overall profitability strategy. In just a few minutes, you’ll gain clarity on where your business stands — and what steps you can take to build a successful business.