Plan the timing. Keep cash available when bills come due.
A cash budget estimates the money a business expects to receive and pay during a future period. It starts with the opening cash balance and projects the closing balance, helping you spot a shortage before payroll, rent, or a supplier invoice is due.
You can build one with a spreadsheet and a realistic collection schedule. The essential task is to put each payment in the period when cash is expected to move. A strong sales month can still leave a business short of cash if customers pay later than its bills.
What is a cash budget used for?
A cash budget supports decisions about payment timing, equipment purchases, cash reserves, and financing. OpenStax’s financial-budgeting guide explains how expected collections and payments help identify when additional funding may be needed.
The word “cash” includes money received or paid through business bank accounts, not just physical currency. This is a cash-flow planning tool, rather than a requirement to pay every expense with banknotes.
For a small business, the most useful output is often a practical question: After the expected receipts and payments, will enough money remain for the next set of obligations?
The information you need before starting
- Opening cash: The money available at the beginning of the period, using reconciled records.
- Expected receipts: Customer collections and other anticipated cash inflows.
- Expected payments: Payroll, suppliers, rent, taxes, debt payments, and planned purchases.
- Minimum cash target: The cushion you want to preserve for operations.
- Financing assumptions: Borrowing, owner contributions, or repayments shown separately.
Gather bank records, unpaid invoices, supplier bills, payroll schedules, and loan payment details. Mark uncertain items clearly. A prospective sale or an unapproved loan should not be presented as guaranteed cash.
How to prepare a cash budget in 6 steps
1. Choose a period that reveals the timing
A monthly budget is a useful starting point. Use weekly columns when balances are tight or receipts are uneven. A month-end total can look comfortable while hiding a shortage in the middle of the month.
Keep the same period across every supporting schedule. For example, do not combine weekly payroll with monthly customer collections without translating both into the same calendar.
2. Enter the opening cash balance
Use an opening balance that reflects outstanding payments and reconciliation adjustments. Keep restricted funds or money unavailable for operations identifiable. Do not count an unused credit line as cash already in the bank.
Once the first period is complete, its projected closing balance becomes the next period’s opening balance. This link lets a shortage carry forward rather than disappear between columns.
3. Estimate when customers will actually pay
Separate immediate payments from credit sales. Use invoice due dates and collection history to estimate receipts. A $10,000 invoice issued this month might bring in no cash this month if the customer pays next month.
For a repeatable forecast, split collections into practical groups: amounts already invoiced, cash sales expected during the period, and collections from future credit sales. Avoid including the same invoice in two groups.
Sales and cash receipts answer different questions. Our guide to understanding earnings and revenue provides useful context for separating business performance from the movement of money.
4. Schedule the cash payments
List payments when they are expected to leave the account. Include recurring operating bills and irregular items such as annual insurance, estimated taxes, equipment purchases, and loan installments.
Depreciation is an accounting expense without a current cash payment, so do not insert it as a separate cash outflow. Include an equipment purchase when it is paid for. For loan payments, account for the cash paid toward both principal and interest.
Check small recurring charges as well as large invoices. Banking and payment-processing costs can be easy to miss; our guide to reducing avoidable bank fees can help you review those charges.
5. Calculate the balance before financing
Add expected receipts to opening cash, then subtract the scheduled payments. Compare the result with your minimum cash target. Corporate Finance Institute’s budgeting overview highlights the importance of receipt and payment timing in cash planning.
A positive closing balance does not necessarily mean you have money to spend freely. If it is below your operating cushion, the budget is still signaling a funding or timing problem.
6. Add realistic funding and update the forecast
Show any planned borrowing, owner funding, and debt repayments in separate rows. Distinguish approved arrangements from possibilities. Include related interest, fees, or repayment obligations where applicable.
After each period, replace estimates with actual results and explain the differences. Keep the original budget available for comparison, then update future assumptions based on what you learned.
A simple cash budget example
Imagine a small service business with $8,000 of opening cash. It expects $18,000 of customer collections and $20,000 of cash payments this month. Management wants to keep a $7,000 minimum balance.
| Item | Amount |
|---|---|
| Opening cash balance | $8,000 |
| Expected customer collections | $18,000 |
| Total cash available | $26,000 |
| Payroll payments | ($9,000) |
| Supplier payments | ($5,000) |
| Rent and utilities | ($3,000) |
| Taxes and other cash payments | ($3,000) |
| Total cash payments | ($20,000) |
| Closing cash before financing | $6,000 |
| Minimum cash target | $7,000 |
| Gap to the target | $1,000 |
The business is not forecasting a negative month-end balance. It is forecasting a $1,000 shortfall against its chosen cushion. If it secures a $1,000 cash injection before the relevant payments, the projected closing balance becomes $7,000, before any additional financing costs.
Now suppose $4,000 of customer receipts arrive one month late. Closing cash before financing falls from $6,000 to $2,000, and the gap to the target rises to $5,000. This stress test shows why collection timing matters more than a sales headline alone.
These numbers are illustrative. Check weekly balances too: the business could still run short before a late-month collection even if it meets the month-end target.
Cash budget versus other financial reports
| Tool | Main purpose |
|---|---|
| Cash budget | Projects future cash receipts, payments, and balances |
| Operating budget | Plans operating revenue, costs, and expenses |
| Statement of cash flows | Reports cash movements for a completed period |
CFI’s cash-flow statement guide describes the historical report’s operating, investing, and financing sections. The cash budget uses forecasts to help you act before payments occur.
Neither cash in the bank nor retained earnings is a complete measure of the other. Our explanation of net income and retained earnings helps clarify why accumulated accounting profit is not a bank balance.
What to do when the budget shows a shortage
First identify whether the problem is late collections, a one-time purchase, or a recurring gap between receipts and payments. Those causes need different responses.
- Follow up on overdue invoices and confirm realistic payment dates.
- Review optional purchases that can be delayed without disrupting essential work.
- Discuss payment arrangements with suppliers before changing agreed terms.
- Evaluate available funding, its cost, and how repayment affects later periods.
- Recheck prices, margins, and recurring costs if the shortage keeps returning.
A loan can bridge timing, but it does not automatically repair an unprofitable business model. Do not solve one month’s gap by ignoring the repayment in the next month’s plan. The SBA’s financial-literacy resources point small businesses toward advising and financial-management support.
Common mistakes that weaken the forecast
Counting sales as collected cash: Use expected deposit dates, not invoice dates alone.
Missing one-time payments: Keep a calendar for annual bills and planned capital spending.
Counting financing twice: Show new funding once and keep repayments visible.
Ignoring uncertainty: Build a slower-collection scenario alongside the base case.
Mixing personal and business spending: Record owner contributions and withdrawals clearly. The SBA recommends separating personal and business finances to simplify recordkeeping.
Frequently asked questions
Is a cash budget the same as cash stuffing?
No. Cash stuffing usually refers to allocating spending money to envelopes or categories. A business cash budget forecasts receipts, payments, and future cash balances.
Can a profitable business have a cash shortage?
Yes. Customer payments may arrive after payroll or supplier bills. Asset purchases and debt principal payments also use cash without matching the period’s reported operating expenses.
How much minimum cash should a business keep?
There is no single target that fits every business. Consider payroll, fixed obligations, collection reliability, seasonality, and access to funding. The $7,000 target in this article is only an example.
How often should I update the cash budget?
Review it as each period closes and when a material receipt or payment changes. Weekly updates may be useful during tight periods; a stable business may use a monthly review with extra checks for major events.
Turn the forecast into a working routine
Start with reconciled cash, map realistic collection dates, and schedule every meaningful payment. Compare the projected balance with an operating cushion, test delayed receipts, and revise the plan using actual results. The value of a cash budget comes from making timely decisions with it.