Most small business owners can tell you their sales figure off the top of their head. Far fewer can tell you their gross margin, their runway, or how much cash is actually available to spend this week. That gap is where good businesses quietly get into trouble.
Business finance isn’t accounting. Accounting records what already happened. Finance is about using those records to decide what happens next.
Table of Contents
Profit Is an Opinion, Cash Is a Fact
A business can be profitable on paper and still fail to make payroll. It happens constantly.
Profit is calculated when a sale is recorded. Cash arrives when the customer actually pays. If you invoice on 60-day terms but pay suppliers in 15, you can grow yourself straight into insolvency — every new order widens the gap.
Track both. But when the two disagree, cash wins.
The Four Numbers Worth Watching Weekly
1. Gross Margin
Revenue minus the direct cost of delivering the product or service, expressed as a percentage. This single number tells you whether your pricing works. If gross margin is thin, no amount of volume will save you — you’ll just lose money faster.
2. Fixed Monthly Costs
Rent, salaries, software, insurance — everything you pay regardless of sales. Knowing this number tells you your break-even point: fixed costs divided by gross margin percentage.
3. Cash Runway
Cash in the bank divided by average monthly burn. Expressed in months. If the answer is under three, that’s your most urgent problem, whatever else is on your list.
4. Receivables Ageing
How much you’re owed, and how old each invoice is. Money sitting in the 60- and 90-day columns is money you’ve already earned and are effectively lending to your customers for free.
Separate the Business From Yourself
Mixing personal and business money is the most common and most expensive mistake small operators make. It makes margins impossible to read, tax filing painful, and lending applications weak.
Open a dedicated business account. Pay yourself a set amount on a set date. Everything else stays in the business.
Funding: Know What You’re Really Buying
Different money serves different purposes:
- Retained profit — cheapest capital available, and the slowest to accumulate
- Bank debt — fine for assets with predictable returns; dangerous for covering losses
- Invoice financing — solves timing problems, not profitability problems
- Equity investment — permanent, expensive, and appropriate only when growth genuinely needs fuel
Borrowing to fix a cash-timing issue is reasonable. Borrowing to hide a margin problem just postpones the reckoning.
Build a Simple Forecast
You don’t need financial modelling software. A spreadsheet with twelve columns will do:
- Opening cash
- Expected money in
- Expected money out
- Closing cash
Update it weekly with what actually happened. Within two months you’ll be forecasting more accurately than most businesses ever manage — and you’ll see problems eight weeks before they arrive instead of the morning they do.
Financial Control Is a Habit, Not an Event
The owners who stay solvent aren’t the ones with the best accountants. They’re the ones who sit down for twenty minutes every Friday, look at the same four numbers, and act on what they see.
Set the appointment. Keep it. That habit is worth more than any financial tool you could buy.