Why is your bank balance different from your profit?

Your bank balance differs from profit because invoices and payments happen at different times. VAT, unpaid sales, unpaid supplier bills, stock, equipment purchases and loan principal also affect the two figures differently. Reconcile them with a short profit-to-bank bridge before deciding what the business can spend.

A profitable month can end with less cash. A loss-making month can end with more. Neither result means one number is wrong: profit and bank cash answer different questions.

Profit measures performance; the bank measures cleared cash

A profit and loss account covers a period. It takes sales and subtracts the costs recognised in producing them. The result shows whether trading created a profit or loss under the accounting basis used.

The bank balance is a point-in-time amount. It includes opening cash and every cleared receipt or payment, whether or not that movement belongs in the period’s profit calculation.

GOV.UK separates the profit and loss account from the balance sheet: the first records sales, running costs and profit or loss, while the second records assets, liabilities and amounts owed at the year end.

That distinction explains why checking the bank cannot replace a profit review. It also explains why a positive profit does not prove that the cash is available to spend.

Six lines explain most differences between profit and bank cash

Build a bridge from period profit to the movement in the bank account. Start with these six adjustments.

1. Unpaid customer sales reduce cash relative to profit. A sale may count as income before the customer pays. If £3,600 of recorded sales is still outstanding, profit includes it but the bank does not.
2. Unpaid supplier bills increase cash relative to profit. A supplier cost can reduce profit before the invoice is paid. The cash remains in the bank until the payment clears.
3. Stock can move before its cost reaches profit. Buying £5,000 of stock uses cash immediately. Depending on the accounting method, the unsold portion may remain an asset rather than becoming a current-period cost.
4. VAT can sit in the bank without being profit. Keep the expected liability visible rather than treating the full bank balance as earned money.
5. Equipment purchases use cash differently from day-to-day costs. A £6,000 oven or machine can leave the bank at once, while its accounting or tax treatment may be spread or handled through capital allowances.
6. Loan principal reduces cash but not operating profit. Repaying £1,200 of principal reduces the liability and the bank balance. Interest is treated separately as a finance cost.

HMRC describes a VAT-registered trader as effectively collecting VAT on behalf of the tax authority. The business normally pays the excess of output VAT over reclaimable input VAT. Owner investment, dividends and drawings can create further differences; add them as separate bridge lines when they occur.

A six-line bridge turns an £8,400 profit into £16,800 in the bank

The following example is illustrative and simplified. Harbour Cafe starts the month with £12,000 in the bank and reports £8,400 operating profit.

1. Start with opening bank cash of £12,000.
2. Add operating profit of £8,400.
3. Subtract £3,600 of sales recorded but not yet paid by customers.
4. Add back £4,800 of supplier costs recorded but not yet paid.
5. Subtract a £6,000 equipment purchase paid from the bank.
6. Subtract £1,200 of loan principal repaid.
7. Add £2,400 of net VAT cash collected but not yet paid to HMRC.

The bank balance is £16,800, even though the month’s operating profit is £8,400. The difference is explained by opening cash, payment timing and non-profit bank movements. The £2,400 VAT line also means the whole £16,800 is not free cash.

After this reconciliation, work out how much cash the business actually has left by deducting known commitments from the cleared balance. The related Involiqo guide is linked in the sources below.

Invoice dates and payment dates make the bridge auditable

A useful reconciliation does more than force two totals to agree. Every adjustment should point to a record that another person can check.

For customer sales, keep the invoice date, due date, paid amount and cleared date. For supplier costs, keep the invoice date, approval status, due date and bank-payment date. For VAT, loans and equipment, retain the supporting statement or schedule.

Involiqo connects these operational records. Money In and Money Out show cash movement, while approved supplier invoices show what has been recognised, what is due and when it is expected to leave. If gross margin changes as well as cash, trace the underlying invoice line items.

Do not post a vague line called “timing difference” for £7,000. Split it into unpaid sales, unpaid bills and the specific non-profit cash movements. A labelled bridge reveals what should reverse next month and what needs action now.

Reconcile profit and bank cash before the Monday spending decision

Use the same short routine after the monthly accounts are available, and perform a lighter version each Monday for material movements.

1. Confirm the opening and closing cleared bank balances.
2. Record profit for the same date range and on the same accounting basis.
3. List unpaid customer sales included in profit.
4. List unpaid supplier costs included in profit.
5. Add stock, equipment, VAT, finance and owner transactions separately.
6. Tie every line to an invoice, bank entry, VAT account or loan schedule.
7. Investigate the unexplained remainder rather than carrying it forward.

Once the bridge agrees, place the dated receipts and payments into a 13-week cash-flow forecast. The reconciliation explains the past and current gap; the forecast shows when that gap may create pressure.

Frequently asked questions

Can a profitable business run out of cash?

Yes. Profit can include sales that customers have not paid, while the bank must fund wages, rent, VAT, stock and supplier payments on their due dates. Rapid growth can widen that timing gap. Reconcile receivables and payables, then forecast the dates cash will clear before committing to new spending.

Can the bank balance rise while the business makes a loss?

Yes. A new loan, owner investment, sale of equipment, delayed supplier payment or customer collection from an earlier period can increase cash without creating current-period operating profit. Label the source of the increase. Borrowed cash and overdue bills improve today’s balance but create later obligations.

Which figure should you check before spending?

Check both, then calculate the cash available after known commitments. Profit shows whether trading is economically sustainable; the bank confirms cleared cash at one moment. Neither alone includes every near-term bill. Start with reconciled bank cash, reserve VAT and payroll, and use dated bills and forecasts for the final decision.

Key takeaways

• Profit covers performance over a period; the bank balance is cleared cash at a point in time.
• Unpaid sales, unpaid supplier bills and stock timing create common differences.
• VAT, equipment and loan principal move cash without matching operating profit.
• A labelled profit-to-bank bridge should tie every adjustment to evidence.
• Reconcile the current gap before calculating spendable cash or forecasting the next 13 weeks.

The unexplained remainder is the number to investigate

Do not try to make profit equal the closing bank balance. Explain the route between them. Once opening cash, payment timing and non-profit movements are labelled, any remainder becomes a specific reconciliation issue instead of a general worry.

Sources

• GOV.UK: Company annual accounts overview — https://www.gov.uk/annual-accounts/overview
• GOV.UK: VAT guide (Notice 700) — https://www.gov.uk/guidance/vat-guide-notice-700
• HMRC Business Income Manual: VAT general account treatment — https://www.gov.uk/hmrc-internal-manuals/business-income-manual/bim31525
• GOV.UK: Capital allowances and balancing charges 2026 — https://www.gov.uk/government/publications/capital-allowances-and-balancing-charges-hs252-self-assessment-helpsheet/hs252-capital-allowances-and-balancing-charges-2026
• Involiqo: How to work out how much cash your business actually has left — https://involiqo.com/blog/practical-cash-flow-review-stock-based-businesses
• Involiqo: How to build a 13-week cash-flow forecast for a restaurant — https://involiqo.com/blog/13-week-cash-flow-forecast-restaurant
• Involiqo: How to spot supplier price increases in invoice data — https://involiqo.com/blog/spot-supplier-price-increases-invoice-data