Cash flow vs P&L — what's the difference

What is a cash flow statement and what is a P&L?

A cash flow statement tracks money movement: opening balance, inflows, outflows and closing balance. It only contains real money that passed through a bank account or cash desk.

A P&L (profit and loss statement, or income statement) tracks results: what the business earned in a period and what it spent to earn it. The difference is profit; profit as a share of revenue is margin.

Both reports use the same transactions, so a $19,700 profit and a $700 cash increase in one month is normal, not an error.

Cash flow vs P&L: the core difference

The core difference is timing: the cash flow statement records a transaction when money moves; the P&L records it when revenue is earned or a cost is incurred.

Cash basis vs accrual basis

Cash basis accounting records revenue and expenses on payment dates; accrual basis records them when the work is done and the cost arises. These are two ways to build a P&L.

Cash basis: revenue is client payments received in the month; expenses are what you paid. Simple and easy to check against a bank statement, but profit jumps around: one large prepayment makes a month look great.

Accrual basis: revenue is the work delivered in the month, paid or not; expenses are the costs that belong to the month, paid or not. Profit is smoother and shows the real economics, but you must track receivables, advances and accruals.

For most small businesses, a cash-basis P&L plus tight control of who owes you, whom you owe and which advances you've taken is enough.

Why profit isn't cash: six reasons

Profit and cash diverge for six typical reasons, each measurable separately.

Owner draws are a distribution of profit, not an expense. Book them as expenses and the P&L understates profit.

Worked example: one agency month in two reports

Below is a hypothetical September at a digital agency. All figures are illustrative.

What happened during the month:

1. The agency delivered $60,000 of client work. Clients paid $42,000 of it; the remaining $18,000 will be paid in October.
2. One client paid off an August invoice: $9,000.
3. Another client prepaid October work: $6,000.
4. September payroll was accrued at $30,000 and will be paid on October 5. In September, the agency paid August payroll: $28,000.
5. Rent and software were paid: $4,000 and $3,000.
6. September taxes were accrued at $3,000; taxes for the previous period were paid: $2,500.
7. Laptops were bought for $10,800, with a useful life of 36 months.
8. $3,000 of a loan was repaid, and the owner took a $5,000 draw.

Accrual-basis P&L:

Cash flow statement for the same month:

Profit is $19,700, but cash grew by only $700. Judging by the P&L alone, the owner might hire two more people. The cash flow statement shows almost no free cash: $30,000 of September payroll is still due, and $6,000 of inflows is an advance for October.

On a cash basis (by payment date, excluding equipment, loan and owner draw), profit is $57,000 − $37,500 = $19,500 — exactly the operating cash flow.

Example for a clinic or studio: packages and equipment

In clinics and service businesses that sell packages, the gap comes from prepaid courses and equipment.

Say a client prepays a package of 10 sessions at $50 each — $500 up front. In September they attend 3 sessions.

A $12,000 device with a four-year life is a $12,000 outflow in the month of purchase and $250 of monthly depreciation on an accrual P&L. Booked as an expense on a cash-basis P&L, it makes that month look like a loss.

How to reconcile profit and cash, step by step

A reconciliation explains the gap between profit and cash and catches booking errors:

Operating cash flow = profit + depreciation − increase in receivables + increase in client advances + increase in payroll and taxes payable

Net change in cash = operating cash flow − equipment purchases ± loans − owner draws

Steps:

1. Take accrual-basis profit for the month.
2. Add back depreciation: it is an expense with no cash payment.
3. Subtract the increase in receivables: how much more clients owe at month-end than at the start.
4. Add the increase in client advances, payroll payable and unpaid taxes.
5. Subtract equipment purchases, loan repayments and owner draws; add any new loans.
6. Compare the result with the actual change in bank and cash balances. If the gap exceeds a couple of percent, look for unbooked transactions and internal transfers recorded as income or expenses.

Reconciliation for the agency example:

It matches the cash flow statement to the dollar.

When you need which report

Use the cash flow statement for decisions about the next few weeks and the P&L for decisions about the business model.

To turn monthly reports into a plan, see budget vs actual, step by step; for the overall setup, see management accounting for agencies and clinics.

How it works in 95sales CRM

In 95sales CRM, the monthly P&L is cash-basis: revenue is client payments by payment date, expenses are grouped by category, and you get a project filter, margin and Excel export. In effect, it shows the cash picture by category — the "cash-basis profit" from the example above.

The accrual view comes from the management balance sheet as of today. It shows exactly the lines a reconciliation needs: client receivables, client advances (overpayments), payroll payable and unpaid taxes, plus money in bank accounts and cash desks. Payments and balances for each client are in payments and debts.

Common mistakes

1. Watching only one report. A profitable business can run out of cash, and one with a healthy balance can be losing money.
2. Treating a prepayment as earned. An advance is an obligation until the work is done.
3. Booking owner draws and loan repayments as expenses. Profit and margins look worse than they are.
4. Not booking transfers between your own accounts. They inflate both inflows and outflows.
5. Skipping the monthly reconciliation. Errors pile up until nobody trusts the reports.