9 Financial Planning Tips Every Small Business Owner Should Know
Practical advice on building a realistic budget, planning income and expenditure, setting financial goals and forecasting profit.
Before looking at individual figures, it helps to know where they come from. Every business number lives in one of three financial statements.
Shows what you earned and what it cost to earn it over a period — usually a month or a year. Read it from the top: sales, then cost of sales, then overheads, ending with net profit.
Tip: Compare each month with the same month last year, not just the previous month — it removes seasonal noise.
A snapshot of what the business owns (assets) and owes (liabilities) on a single date. The difference is the owners' equity — what the business is worth on paper.
Tip: Look at current assets versus current liabilities: it shows whether you can cover bills due within the next year.
Tracks actual money moving in and out of the bank, split into trading, investing and financing. It explains why your bank balance changed even when profit did not.
Tip: If profit is rising but cash from trading is falling, check how quickly customers are paying you.
Each number comes with a simple formula and a practical tip. Open one at a time and try it with your own figures.
The total value of sales before any costs are deducted.
Revenue = Units sold × Price
Tip: track revenue by product or customer group, not just in total — it shows where growth really comes from.
What is left after the direct costs of making or delivering your product or service.
Gross margin % = (Revenue − Cost of sales) ÷ Revenue × 100
Tip: a falling gross margin is often the earliest sign that prices need reviewing.
What remains after all costs, including overheads, have been paid.
Net profit = Gross profit − Overheads
Tip: review overheads as a percentage of revenue — it should fall as you grow.
Mark-up is added to cost; margin is a share of the selling price. They are not the same, and confusing them leads to under-pricing.
A 50% mark-up = a 33% margin
Tip: always set prices from the margin you need, not the mark-up you are used to.
The level of sales at which you cover all your costs — no profit, no loss.
Break-even sales = Fixed costs ÷ Gross margin %
Tip: recalculate break-even before any major new cost, such as a hire or a new lease.
How many months the business could keep going on its current cash if no new money came in.
Runway (months) = Cash in bank ÷ Average monthly net outflow
Tip: for businesses that are not yet profitable, this may be the single most important number to watch.
On average, how long customers take to pay you.
Debtor days = Trade debtors ÷ Annual credit sales × 365
Tip: if debtor days are higher than your payment terms, tighten your credit control.
This article is general information to help you think about your business finances. It is not regulated financial, tax or legal advice. For decisions specific to your situation, speak to a suitably qualified professional. See our Disclaimer.

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