How Much Cash Should Your Business Keep in the Bank?

Opening your bank app and seeing a fat balance feels good — for about four seconds, until you remember payroll runs Friday. 

Maybe you can spend it. Maybe you can’t. Some of that cash already has a job. Payroll’s due Friday. Sales tax is due next week. An insurance bill lands next month. Somewhere in there might be a customer deposit for work you haven’t finished yet.

That’s why the bank balance alone can’t tell you whether your business has enough cash. You need a target.

Start With 3–6 Months, Then Adjust

There’s no magic number that fits every business. Still, three to six months of core expenses is a useful starting range.

Many businesses carry far less. A 2026 JPMorganChase Institute small business snapshot found that the typical firm in its nationwide sample had only 17.6 days of cash reserves in 2025 — not even three weeks. A reserve that thin leaves almost no room for a slow-paying customer, a broken piece of equipment, or one weak sales month.

The goal isn’t to copy another business. It’s to give your own business enough time to make a calm decision when something goes wrong.

Cash Is Not the Same as Profit

A profitable business can still run short on cash. That happens when customers owe you money, inventory’s been bought but not sold yet, or debt payments eat up more cash than the income statement shows.

The opposite happens too. A business can have plenty of cash in the bank because it just landed a loan or a large customer deposit. That doesn’t mean the business earned that money, or that it’s safe to spend.

Your income statement tells you whether the business is making money. Your balance sheet and cash flow tell you whether it can pay its bills. You need all three parts of the picture.

How to Calculate Your Cash Reserve Target

1. Find Your Essential Monthly Cash Expenses

Look at the last 6–12 months, not just one. Add up the costs you’d still need to pay if sales slowed down for a while:

• Payroll, payroll taxes, and employee benefits
• Rent or mortgage payments
• Loan payments
• Insurance
• Utilities, phone, and required software
• Basic inventory, materials, or supplies needed to serve customers
• Other costs that keep the lights on

Skip depreciation and amortization — those don’t use cash that month. You can also leave out optional spending you’d pause during a true emergency. If you have annual or quarterly bills, divide them into a monthly amount so they don’t sneak up on you.

2. Choose the Number of Months

A business can often stay near three months when it has steady monthly customers, quick collections, low debt, and no single customer who could cause a real problem by walking away.

A business may need six months or more when it has:

• Seasonal or uneven sales
• One or two customers that make up a large share of revenue
• Customers who take a long time to pay
• Large payroll, inventory, or equipment costs
• Fast growth, a new location, or plans to hire
• Little access to credit if an emergency hits

A line of credit can be a good backup plan, but don’t count it as cash. The lender can change the terms, cut the limit, or decide not to renew it. It’s support, not a replacement for savings.

3. Add Known Costs That Are Coming

Your emergency reserve is only one piece of the target. Add money for costs you already know are coming and haven’t set aside yet — an insurance renewal, a vehicle purchase, a needed equipment repair. If taxes aren’t held in a separate account, include those upcoming payments too.

Use this simple formula:

A Simple Example

Suppose a business needs $30,000 each month to cover its essential costs. Revenue is usually steady, but two customers make up a large part of sales, so the owner decides four months feels more reasonable than three.

Money set aside for sales tax, payroll taxes, or income taxes stays separate from that number.

Not All Money in the Bank Is Available

Before you decide the business has extra cash, subtract what already belongs somewhere else:

• Sales tax collected from customers
• Payroll taxes withheld or already due
• Income tax money you’ve set aside
• Customer deposits for work that isn’t finished
• Restricted grant money or funds meant for a specific project
• Checks, automatic drafts, or other payments that haven’t cleared yet

Keeping tax money and reserves in separate accounts makes this much easier to see. You don’t need ten bank accounts to pull it off. For most businesses, an operating account, a tax account, and a reserve account cover it.

Where Should the Reserve Be Kept?

Emergency cash should be safe and easy to reach. Keep enough in checking for normal bills. The rest may fit better in an insured business savings or money market account, where it can earn a little interest without getting mixed into daily spending.

Money you might need soon usually doesn’t belong in the stock market. Short-term CDs or Treasury bills can work for part of a larger reserve, but only if the timing won’t keep you from reaching the money when you need it. Talk with your banker or your financial advisor before you decide where to park it.

Also watch the deposit insurance limit. The FDIC generally adds together deposits owned by a corporation, partnership, or unincorporated association at the same insured bank and insures them up to $250,000 for that entity. Sole proprietorships follow different ownership rules. If your balance might climb above the limit, ask how the accounts are titled and insured — opening a few more accounts at the same bank doesn’t automatically buy you more coverage.

Can a Business Keep Too Much Cash?

Yes — but don’t rush to move money out just because the balance looks high.

First, cover taxes, unpaid bills, your reserve target, and any planned purchases. Then decide what the leftover cash should do. It might pay down debt, replace equipment, fund a hire, fund retirement, grow the business, or become an owner distribution.

The right choice depends on the business, the tax effect, and what’s coming next. Cash with no job just sits there — nobody actually needs a Scrooge McDuck vault of gold coins to swim in, and that’s not really the goal. Cash moved too soon can leave the business scrambling. Both are avoidable if you plan before you spend.

What If You Are Nowhere Near the Goal?

A big target shouldn’t stop you from starting. Build the reserve in steps:

1. Save enough to cover two weeks of essential expenses.
2. Build that to one month.
3. Work toward two months, then three.
4. Review the target before pushing toward six months or more.

Move a set amount each week, or save a small share of collected revenue. Use the strong months to make progress, but don’t move so much that the operating account runs short. If the business is carrying expensive debt, talk through the balance between saving cash and paying that debt down.

Review the Number as the Business Changes

Your target shouldn’t stay the same forever. Review it at least once a year, and whenever you add employees, take on debt, open a location, lose a large customer, or make another major change. A growing business often needs more cash even when profit is improving.

How We Help

At Compton & Company, we do more than record what already happened. For our monthly accounting clients, we help business owners understand their numbers, notice changes, and plan ahead. That might mean setting a cash target, separating money that already has a job, or deciding whether the business can handle a large purchase.

You shouldn’t have to guess what the number in the bank means. Good financial reports and a practical plan can tell you what’s available, what’s already spoken for, and what the business needs next.

If you’d like help understanding your business cash flow and building a clearer plan, contact Compton & Company, CPAs. We help small business owners navigate today and plan for tomorrow.

Frequently Asked Questions

How much cash should a small business keep in the bank?

A practical starting point is 3–6 months of essential operating expenses. A stable business may be comfortable near three months. A seasonal, growing, or less predictable business may need six months or more.

Should accounts receivable count as part of the cash reserve?

No. Accounts receivable may turn into cash, but it isn’t cash yet. Customers may pay late, pay less than expected, or not pay at all. Track it in your cash forecast, but don’t count it as money already in the bank.

Should a line of credit count as cash on hand?

No. A line of credit is a backup source of borrowed money. It can support a cash plan, but it doesn’t replace savings.

Should tax money be kept in the cash reserve?

Tax money should usually be tracked separately. The reserve is what’s left after sales tax, payroll tax, income tax, and other known obligations are covered.

Is it okay to keep more than six months of expenses?

Yes. A larger reserve can make sense for a seasonal business, a company with high equipment costs, or an owner planning a major change. Just make sure the extra cash has a purpose and sits somewhere safe that fits when you might need it.