How to Manage Cash Flow for Your Small Business

To manage cash flow, forecast the cash you expect to receive and pay out week by week, so you can see a shortfall before it happens. Then work both sides: invoice promptly and follow up so money comes in sooner, time your payments so money goes out when you can afford it, and keep a cash reserve for the weeks the forecast gets wrong. Review the forecast every week against what actually happened.

Billed publishes this page. Definitions are quoted from OpenStax textbooks, opened on October 30, 2026. This page covers the practical side of managing cash; for the financial statement itself, see what is a cash flow statement, and for figures across small businesses, see cash flow statistics.

What you're managing

OpenStax's Principles of Accounting, Volume 1 (chapter 16 key terms) defines cash flow as "cash receipts and cash disbursements as a result of business activity". Its Principles of Finance (section 19.3) says: "Cash management means efficiently collecting cash from customers and managing cash outflows."

Profit and cash aren't the same thing: depending on your accounting method, your books can show a sale before the client pays, but you can only pay bills with the cash you've received. See cash vs. accrual accounting. For the gap between them, see what is a cash flow gap and what is working capital.

Step 1: Forecast cash week by week

OpenStax's Principles of Finance (chapter 19 key terms) defines a cash budget as "a report that shows an estimation of cash inflows, outflows, and cash balances over a specific period of time, such as monthly, quarterly, or annually". For a small business, a weekly version for the next few months is a practical place to start:

1. Start with today's bank balance.
2. List the cash you expect to receive each week: invoices due, deposits and recurring payments.
3. List the cash you expect to pay each week: rent, payroll, contractors, software, loan payments and tax payments.
4. Work out each week's ending balance: starting balance + money in − money out.
5. Mark any week whose ending balance falls below the minimum balance you want to keep.

Step 2: Bring cash in sooner

• Invoice as soon as the work is done. See how to send an invoice.
• Set clear payment terms with a calendar due date. See invoice payment terms explained and what net 30 means.
• Follow up on overdue invoices on a schedule. See how to write invoice payment reminders.
• Let clients pay from the invoice, with a pay link on it.
• Consider an early-payment discount only if it's worth the cost to you. See the guide to invoice discounts.
• Watch who owes you, and for how long. OpenStax defines an accounts receivable aging schedule as "a report that shows amounts owed by customers by the age of the account, as measured by the number of days since the sale". See accounts receivable management and accounts receivable turnover.

Step 3: Time the cash going out

• Use the payment terms your suppliers give you. OpenStax describes trade credit as "credit granted to a business, also called accounts payable; allows a business to buy goods and services on account and pay the cash at some point in the future". Paying on the due date, not earlier, keeps cash in your account longer.
• Plan large purchases for weeks when your forecast shows room.
• Set money aside for taxes as you're paid, so tax payments don't leave a hole. Ask your accountant how much; see what is quarterly estimated tax.
• Review recurring charges each quarter and cancel what you no longer use.

Step 4: Build a cash reserve

Keep a reserve in a separate account for the weeks when clients pay late or costs come in higher than planned. Decide on a target with your accountant, based on your own monthly costs and how much your income varies, and add to it in the weeks your forecast shows extra cash.

Worked example: a four-week forecast

The business and figures here are a sample, invented for this example.

A design studio starts with $15,000.00 in the bank and wants to keep at least $8,000.00 on hand.

• Week 1: $15,000.00 + $8,000.00 in − $6,500.00 out = $16,500.00
• Week 2: $16,500.00 + $3,000.00 in − $7,200.00 out = $12,300.00
• Week 3: $12,300.00 + $2,500.00 in − $9,800.00 out (payroll and a tax payment) = $5,000.00
• Week 4: $5,000.00 + $12,000.00 in − $5,800.00 out = $11,200.00

Week 3 drops to $5,000.00, which is $8,000.00 − $5,000.00 = $3,000.00 below the minimum. Seeing this two weeks ahead, the owner can follow up on invoices due in week 3, move a planned purchase to week 4, or use the reserve, instead of finding out when the bank balance is already low.

Step 5: Review each week

Each week, replace the forecast numbers with what actually came in and went out, roll the forecast forward a week, and note why any number was off. Compare it with your income, expenses and unpaid invoices each month. For the bigger picture, see what is free cash flow and what is accounts receivable.

Where Billed fits

• Getting paid: Billed's invoice software page says "Invoice reports show which invoices are paid, partially paid or past due, and you can see who owes you money and send them a payment reminder." Its accept payments page says "Billed integrates with Stripe to enable online payments on invoices."
• Regular billing: Billed's recurring invoices page says "Invoices are created automatically and sent to your customers according to your settings."
• Reports: Billed's financial reporting page lists "Invoice Reports (paid, partially paid, and overdue)" and says "Each report can be filtered by date range and exported."
• Spending: Billed's expense tracking page says "the income vs expense report compares income with expenses so you can see how profitable the business is."

Related Articles

• What Is a Cash Flow Statement?
• What Is Working Capital?
• Cash Flow Statistics
• What Is Accounts Receivable Management?

Frequently Asked Questions

What is cash flow management?

OpenStax's Principles of Finance says: "Cash management means efficiently collecting cash from customers and managing cash outflows." In practice, that means forecasting cash, collecting what you're owed on time, timing your payments and keeping a reserve.

How do I make a cash flow forecast?

Start with your bank balance, list the cash you expect in and out each week, and work out each week's ending balance. In the sample on this page, a studio starting with $15,000.00 sees week 3 drop to $5,000.00, below its $8,000.00 minimum.

Is cash flow the same as profit?

No. Depending on your accounting method, your books can show a sale before the client pays, but you can only spend the cash you've received. For how the cash flow statement shows this, see the page on cash flow statements.

How can I get clients to pay faster?

Invoice as soon as the work is done, show a calendar due date, add a pay link, and follow up on overdue invoices on a schedule.

How big should a cash reserve be?

That depends on your costs and how much your income varies. Decide on a target with your accountant and build it up in the weeks your forecast shows extra cash.