Professional indemnity vs public liability: which one does your business need?

A graphic designer and a carpenter can run businesses the same size, with the same turnover, and need completely different insurance. The carpenter's biggest risk is physical — an injury, a damaged property. The designer's biggest risk is financial — artwork with a typo that went to print fifty thousand times. Public liability covers the first. Professional indemnity covers the second. Confusing them is one of the most common — and most expensive — small business insurance mistakes.

The one-line difference

• Public liability: your business physically hurt someone or damaged their property.
• Professional indemnity: your advice, design or professional service cost a client money.

A claim only lands in one bucket. If a client trips over your laptop bag in a meeting, that is public liability. If the strategy you presented in that meeting turns out negligently wrong and costs them a fortune, that is professional indemnity. Holding one policy gives you exactly zero cover for the other kind of claim.

Who needs which

Mostly public liability

Businesses whose product is physical work or a physical space: trades, cleaning, landscaping, retail, hospitality, events, fitness. Anyone whose worst day involves an ambulance or a repair bill.

Mostly professional indemnity

Businesses whose product is thinking: consultants, accountants and bookkeepers, IT and software contractors, marketing agencies, engineers, architects, financial advisers. Anyone whose worst day involves a client's lawyer and a spreadsheet of losses. For several of these professions PI is compulsory under licensing rules, not optional.

Realistically, both

Most service businesses straddle the line. The IT consultant installs hardware on site (public liability) and configures the backup system that silently fails (professional indemnity). The building designer visits sites (PL) and signs off drawings (PI). The physio owns a clinic where someone can slip (PL) and prescribes exercises that can be blamed for an injury (PI, often as part of malpractice cover). Client contracts increasingly require both, with minimum limits for each — commonly $10 million or $20 million public liability and $1 million to $10 million professional indemnity.

The claims-made trap

The two covers also work differently in time, and this is where businesses get burnt. Public liability is an occurrence policy: what matters is when the incident happened. Professional indemnity is claims-made: what matters is when the claim arrives. A PI policy only responds to claims made while the policy is active — even for work done years earlier.

Three practical consequences:

• Never let PI lapse between renewals. A gap does not just pause cover — it can void protection for all prior work, and new insurers may exclude it.
• Maintain continuity when switching insurers. The new policy needs a retroactive date that reaches back to when you started practising, or your history is exposed.
• Buy run-off cover when you stop trading. Claims can arrive years after you close, retire or sell. Run-off cover keeps the policy responding to your past work.

Keeping both straight

Once you hold both covers — plus a business pack, vehicles and workers comp — you have a stack of policies with different insurers, limits, renewal dates and certificates. The claims-made nature of PI makes tidy records more than housekeeping: a lapse you did not notice is a permanent hole in your cover.

• File both policies against your business entity in Insuro, with each policy's schedule and current certificate of currency together.
• Forward renewal emails to your private @insuro.com.au address so every new schedule and certificate files itself against the right policy.
• Let renewal reminders fire well before each expiry — for PI, renewing on time is not just about staying covered from today, it is about staying covered for everything you have ever done.
• Keep old PI schedules on file even after switching insurers — the retroactive dates and policy periods matter if an old-work claim ever surfaces.

The bottom line

Ask yourself what your worst realistic day looks like. If it involves an injury or damaged property, you need public liability. If it involves a client blaming your advice for their losses, you need professional indemnity. If both days are imaginable — and for most service businesses they are — you need both, kept continuously in force, with the paperwork somewhere you can actually find it.