How Much Cash Should Your Business Keep?

Jason Medlin
Apr 20
5 min read

Black-and-white photo representing business cash reserves and financial stability planning

"How much cash should I keep in the business?"

It's one of the most common questions I get. And the honest answer is: it depends.

That's not a cop-out. The right cash reserve for a seasonal landscaping company is different from a marketing agency with retainer clients, which is different from a contractor who bids project by project. Your number depends on your business model, your risk tolerance, and what you're planning for.

But "it depends" isn't helpful without a framework. So let's build one.

The Two Mistakes

Business owners tend to make one of two mistakes with cash.

Running too lean. Every dollar goes right back out the door. Payroll is covered, bills are paid, but there's nothing left over. One slow month, one delayed payment, one unexpected expense, and suddenly you're scrambling. You might be profitable on paper but constantly stressed about making the next payroll.

Hoarding too much. Cash piles up in the operating account because it feels safe. But that cash isn't working. It's not earning meaningful interest, it's not being invested in growth, and it's not being distributed to you as the owner. Fear of the unknown keeps money locked up that could be deployed more productively.

The goal is finding the middle ground: enough cash to weather storms and seize opportunities, but not so much that you're leaving money on the table.

The Baseline: Operating Expenses

Start with your monthly operating expenses. Not revenue. Expenses. What does it actually cost to keep the doors open each month? Include:

→ Payroll and payroll taxes

→ Rent or mortgage

→ Utilities and insurance

→ Software and subscriptions

→ Loan payments

→ Essential vendor payments

This gives you your monthly burn rate. The minimum amount you need to survive a month with zero revenue.

A common rule of thumb is to keep 3 to 6 months of operating expenses in reserve. For most small businesses, that's a reasonable starting point.

If your monthly operating expenses are $50,000, that means a cash reserve of $150,000 to $300,000.

Adjusting for Your Situation

The 3-6 month range is wide because different businesses have different risk profiles. Here's how to think about where you fall.

Lean toward 3 months if:

→ Your revenue is predictable (retainer clients, recurring contracts)

→ You have a line of credit available for emergencies

→ Your fixed costs are low relative to revenue

→ You can scale down quickly if needed

Lean toward 6 months (or more) if:

→ Your revenue is variable or project-based

→ You have significant seasonality

→ You have high fixed costs that can't be cut quickly

→ You're in an industry with long sales cycles

→ You have concentration risk (one or two clients represent a big chunk of revenue)

A landscaping company that does 60% of its revenue between April and September needs more cash reserve than a marketing agency with 12-month retainer contracts. The landscaper has to survive the slow months; the agency has predictable income.

Beyond Survival: The Opportunity Fund

Cash reserves aren't just about surviving bad times. They're also about being ready for good opportunities.

A piece of equipment comes available at a great price. A competitor is selling their client list. A talented employee becomes available. A big project lands that requires upfront investment.

If you're running lean, you can't move on these opportunities. You either pass or you scramble for financing at unfavorable terms.

Some business owners keep a separate "opportunity fund" beyond their operating reserve. This is money earmarked for strategic moves, not survival. It might be another 2-3 months of expenses, or a fixed dollar amount you've determined based on the opportunities you want to be ready for.

What About Excess Cash?

If you've built your reserve and cash keeps piling up beyond that, you have options:

Invest in growth. Hire ahead of demand, invest in marketing, upgrade equipment, expand capacity. Put the money to work in ways that generate return.

Pay down debt. If you're carrying debt with meaningful interest rates, paying it down is a guaranteed return equal to the interest rate.

Take distributions. The business exists to serve you. Once reserves are adequate, it's okay to pay yourself. Build personal savings, invest outside the business, diversify your risk.

Park it in a high-yield account. If you're not ready to deploy excess cash, at least move it somewhere that earns interest. A business savings account or money market can earn 4-5% right now. That's not nothing.

The worst option is letting excess cash sit in a checking account earning nothing because you haven't decided what to do with it.

How to Build Your Reserve

If you're currently running lean, you can't flip a switch and suddenly have 3-6 months of expenses in the bank. You build it over time.

Set a target. Based on the framework above, decide what your reserve should be. Write it down.

Automate transfers. Every month, move a fixed amount into a separate savings account. Treat it like a bill. Even $2,000 a month becomes $24,000 in a year.

Capture windfalls. When a big payment comes in or you have an unusually profitable month, put a portion of the surplus toward your reserve instead of spending it all.

Review quarterly. Check your progress. Adjust the target if your business changes. Celebrate hitting milestones.

Building a reserve takes discipline, but once it's in place, the peace of mind is worth it. You stop reacting to every cash flow bump and start making decisions from a position of stability.

The Real Answer

So how much cash should your business keep?

Enough that you can sleep at night. Enough that a slow month doesn't become a crisis. Enough that you can say yes to the right opportunity when it appears.

For most businesses, that's 3-6 months of operating expenses, adjusted for your specific risk profile. But the right number is the one you've thought through deliberately, not the one you landed on by accident.

Figure Out Your Number

If you're not sure what your cash reserve should be, or if you're trying to build one and not making progress, let's talk. At Bottomline Capital, we help business owners understand their cash position, set realistic targets, and build the financial foundation for confident decision-making.

Book a free consultation and we'll work through the numbers together.