Every owner whose net worth sits entirely in their business is carrying a risk they would never accept from an investment adviser: one asset, one sector, one economy, and one that takes their income away at the same moment it loses its value.
Building something outside the business is not a lack of confidence in it. It is the only protection against being wrong about it.
Get the order right
Working capital first. Then a buffer that would carry the business through a bad period. Then expensive debt paid down. Then investment inside the business where there is a clear return.
Only after those does external investing make sense. Anyone advising otherwise while the business carries an overdraft is not helping you.
Personal or through the company?
A meaningful question with different tax treatment on the way in, while held, and on the way out — and it depends on your structure and your own circumstances.
What is worth avoiding is drifting into it: buying investments through the business account because that is where the money was, and reconstructing the reasoning at year end. Decide deliberately, with advice.
Keep it boring and keep it separate
Money intended to reduce your concentration risk should not be invested in things closely tied to your own industry or your own customers. A supplier's shares, a competitor's venture, or a scheme somebody in your trade is promoting all move with the same things your business moves with.
The point of the exercise is that it does not.
Liquidity matters more for a business owner
Your income is more variable than a salaried person's, so being able to reach money when a quiet quarter arrives is worth more to you than it is to them.
That argues for keeping a meaningful part accessible rather than committing everything to things you cannot exit quickly.
Be sceptical of what gets offered
Business owners with visible success attract investment propositions, and the ones that arrive unsolicited are rarely the good ones. High promised returns, urgency, and complexity you cannot explain back to somebody else are the three signals worth respecting.
Check that anyone giving you financial advice is licensed to do so. It takes a minute and it is the single most effective filter available.
Do it steadily
A monthly amount, automated, continuing through the years the business needs money — because those are precisely the years it is easiest to stop and hardest to make up afterwards.
Owners who wait for a good year to start investing generally find the good year has other uses.
General guidance, not financial or investment advice. Take advice from a licensed financial adviser.