Working Capital Explained: How to Calculate It and Improve It

Sales can be growing, the income statement can show a profit, and the bank account can still feel uncomfortably tight. In many businesses, the missing piece is working capital.

Working capital helps show whether the business has enough short-term resources to cover payroll, supplier bills, taxes, loan payments and other obligations as they come due. It is one of the clearest ways to connect the balance sheet to day-to-day operations.

What is working capital?

Working capital is the amount remaining when current liabilities are subtracted from current assets. Current assets are resources expected to be converted into cash, sold or used within the normal operating cycle. Current liabilities are obligations generally due within the same short-term period.

The Business Development Bank of Canada defines working capital as the cash and other current assets available after current liabilities have been accounted for.

Working capital formula

Common current assets

• Cash and bank balances
• Accounts receivable expected to be collected soon
• Inventory expected to be sold
• Short-term investments
• Prepaid expenses that will be used within the year

Common current liabilities

• Accounts payable
• Credit card balances
• Payroll and sales-tax liabilities
• Accrued expenses
• Operating lines of credit
• The portion of long-term debt due within the next year

Working capital example

Consider a business with the following balances:

Current assets	Amount
Cash	$45,000
Accounts receivable	$80,000
Inventory	$25,000
Total current assets	$150,000

Current liabilities	Amount
Accounts payable	$55,000
Payroll and sales taxes payable	$18,000
Credit cards and short-term debt	$17,000
Total current liabilities	$90,000

The calculation is:

The business has a positive working-capital position, but that does not mean all $60,000 is sitting in the bank. A large portion is tied up in receivables and inventory. The owner still needs to understand how quickly those assets can become cash.

What is the working capital ratio?

The working capital ratio, also called the current ratio, compares current assets with current liabilities.

Using the same example:

$150,000 ÷ $90,000 = 1.67

This means the business has $1.67 of current assets for every $1 of current liabilities.

What is a good working capital ratio?

There is no single ratio that is right for every business. A ratio above 1 generally means current assets exceed current liabilities, but the quality and timing of those assets matter. BDC notes that acceptable targets vary by industry and circumstances, and that inventory-heavy businesses should also consider how much of their working capital is truly liquid. Its current-ratio guidance also recommends watching the trend instead of relying on one isolated calculation.

Two businesses can each have a current ratio of 1.5 and still face very different risks:

• Business A holds mostly cash and receivables from customers who pay reliably.
• Business B holds slow-moving inventory and receivables that are already overdue.

Business A likely has a stronger short-term position even though the ratio is identical.

Working capital versus cash flow

Working capital is a balance-sheet measure at a particular date. Cash flow tracks money moving into and out of the business over a period.

Working capital	Cash flow
Uses current assets and current liabilities	Tracks actual cash receipts and payments
Shows short-term financial capacity	Shows whether cash increased or decreased
Measured at a point in time	Measured over a period
Can include inventory and unpaid invoices	Includes cash only when it is received or paid

A business can have positive working capital and still experience a temporary cash shortage if customers pay late or inventory is difficult to sell. It can also have negative working capital under a business model that collects from customers before paying suppliers. Context matters.

For a broader look at cash coming into and leaving the business, read Agile’s guide on how to improve cash flow for a small business.

Why growing businesses run into working-capital pressure

Growth often requires a business to spend money before collecting the related revenue. The company may need to purchase materials, add employees, carry inventory or pay subcontractors before the customer invoice is due.

The cash conversion cycle connects three important areas:

• Inventory: how long cash is tied up before goods are sold
• Accounts receivable: how long customers take to pay
• Accounts payable: how long the business has before supplier bills are due

When customers pay in 60 days but suppliers require payment in 30 days, the business must finance the gap. The faster sales grow, the larger that gap can become.

Warning signs of working-capital pressure

• Using credit cards or an operating line to cover recurring payroll
• Paying suppliers later than agreed
• Growing accounts receivable without matching cash collections
• Carrying inventory that is not selling
• Using GST/HST or payroll-remittance funds for operations
• Making long-term purchases from short-term operating cash
• Increasing sales while the bank balance continues to fall
• Frequently moving money between accounts to meet immediate payments

How to improve working capital

1. Invoice promptly and collect receivables sooner

Send invoices as soon as the agreed billing milestone is reached. Use clear payment terms, confirm invoices reach the right person and follow up consistently on overdue balances.

2. Review inventory levels

Inventory uses cash before it creates revenue. Identify slow-moving items, improve purchasing forecasts and avoid buying more than the business can sell within a reasonable period.

3. Use supplier terms intentionally

Pay bills by the agreed deadline, but do not automatically pay every invoice the day it arrives. Review early-payment discounts, supplier relationships and cash needs before scheduling payments.

4. Match financing to the life of the asset

Using short-term operating cash to purchase equipment, vehicles or other long-term assets can weaken working capital. Financing structure should reflect the useful life of the purchase and the business’s ability to repay.

5. Protect margins

Higher sales do not automatically create more working capital. Review pricing, direct costs, discounts, rework and unbilled project changes to make sure growth is producing enough margin.

6. Forecast upcoming cash needs

Include payroll, supplier bills, debt payments, taxes and expected customer collections in a rolling forecast. This can reveal the timing of a shortfall before it becomes urgent.

7. Keep the balance sheet current

Working capital cannot be managed from outdated records. Bank accounts, receivables, supplier bills, credit cards, taxes and short-term debt need to be recorded and reconciled consistently.

Common working-capital mistakes

• Assuming profit means cash is available
• Counting overdue receivables as though they will be collected immediately
• Ignoring supplier bills that have not yet been entered
• Using one target ratio for every industry and season
• Looking at the ratio once instead of monitoring the trend
• Failing to separate current debt from long-term debt
• Allowing bookkeeping to fall behind during periods of growth

How Agile helps businesses understand working capital

Working-capital decisions depend on reliable information about cash, customer balances, supplier bills, taxes and short-term debt. Agile keeps bookkeeping moving throughout the month with modern systems, human support and CPA oversight.

With current reconciliations and clearer financial reports, business owners can see what is available, what is owing and where short-term pressure may be developing. Learn more about Agile’s Canadian bookkeeping services and how the process works.

Frequently asked questions

What is working capital in simple terms?

Working capital is the amount left after subtracting current liabilities from current assets. It helps show whether a business has enough short-term resources to cover upcoming obligations.

What is the working capital formula?

Working capital equals current assets minus current liabilities.

What is the working capital ratio?

The working capital ratio, also called the current ratio, is current assets divided by current liabilities.

Is working capital the same as cash flow?

No. Working capital is a balance-sheet measure at a specific date. Cash flow measures cash entering and leaving the business over a period.

Can a profitable business have poor working capital?

Yes. Profit may be tied up in unpaid customer invoices or inventory while payroll, supplier bills and taxes still require cash.

What causes negative working capital?

Negative working capital can result from low cash, slow collections, excess short-term debt, large supplier balances, tax liabilities or rapid growth that requires spending before customer payments arrive.

How often should working capital be reviewed?

Many businesses benefit from reviewing it monthly and watching the trend over time. Businesses with tight cash, rapid growth or seasonal operations may need more frequent review.

How can bookkeeping improve working-capital management?

Current bookkeeping makes receivables, payables, taxes, cash and debt balances more reliable, giving owners a clearer view of short-term financial capacity.

Sources and further reading

• BDC: Working capital, formula, ratio and examples
• BDC: Current ratio calculator and guidance
• BDC: Cash conversion cycle

This article provides general educational information. It is not financial, tax or legal advice for a specific business.