Your current schedule
Your current policy schedule and the professional services definition on it.

BOOKKEEPER AND BAS AGENT INSURANCE
Yes, in almost every case. A PI policy written for bookkeeping and BAS services will generally not cover tax agent services unless they appear in the professional services definition, subject to the wording of your policy. The definition has to be widened before you lodge the first return, your turnover estimate may push you into a higher TPB tier, and the premium moves with the mix of work. Here is what to change and what it cost a client who did exactly this.
Premiums and outcomes described are specific to this client and indicative only. Your own terms will depend on your circumstances and the insurer.
THE SHORT ANSWER
Does a registered BAS agent need to change their professional indemnity insurance when they start offering tax agent services?
Yes, in almost every case. A PI policy written for bookkeeping and BAS services will generally not cover tax agent services unless they appear in the professional services definition, so the policy should be endorsed or re-placed before the first tax return is lodged. The limit should be checked against the TPB tier for your new fee estimate ($250,000, $500,000 or $1,000,000 by turnover), and the original retroactive date should be carried across, back to the earlier of your previous policy's retroactive date or the start of your first policy. On Tank's placements the change has added a few hundred dollars a year for a sole practitioner. Cover always turns on the policy wording and the schedule.
Mid-term endorsement is the usual route. The likely uninsured gap is the period between lodging your first return and updating the policy, so do the policy first. Figures are indicative only, not a quote.
A bookkeeper's policy usually reads something like "bookkeeping, BAS preparation and lodgement, payroll processing". Tax agent services, which under the Tax Agent Services Act include preparing and lodging income tax returns and giving advice on tax liabilities, are a different activity with a different rate. If they are not in the definition, a claim from a tax return you prepared can be declined on scope.
| What changes | Why | What we do |
|---|---|---|
| Professional services definition | Tax agent services must be named, with the split between bookkeeping, BAS and tax work | Endorse the existing policy or re-place it with the new definition before the first return is lodged |
| Limit and TPB tier | Tax work usually lifts fee turnover, which can move you from $250,000 to $500,000 or $1,000,000 under TPB(GS) 06/2010 | Re-estimate the year's fees with the new services and pick the limit against the new tier, not the old one |
| Retroactive date | TPB(GS) 06/2010 requires retroactive cover to the earlier of your previous policy's retroactive date or the start of your first policy | Ask for the original retroactive date in every endorsement or replacement quote, and tell you if a market will not match it |
We re-quoted the risk with the new services definition. Seven insurers returned terms from approximately $700 to $1,600 for the same submission. The specialist market that writes tax practitioners as a class came in lowest, at approximately $700, with the original retroactive date preserved. Bookkeeping-only PI the year before had been quoted from approximately $450, so the move to majority tax work moved the PI premium by a few hundred dollars a year. Figures rounded up and indicative only.
The order of operations matters: the policy change should be in place before the first return is lodged. Full case study: solo bookkeeper to tax agent.
Your current policy schedule and the professional services definition on it.
Applied, approved, or approved in a director's personal name while trading through a company. The insured name on the policy has to match how you will practise.
The expected split of fees between bookkeeping, BAS services and tax agent services for the next twelve months.
Anything beyond individual and small business returns: trusts, superannuation fund returns, financial statements, ASIC compliance or tax planning. Each is quoted, but each is rated.
That is a separate licensing question and a separate PI tier, and bookkeeper policies typically exclude it.
FREQUENTLY ASKED QUESTIONS
QUOTE REQUEST
Send your current schedule and the expected split between bookkeeping, BAS and tax work. We will come back with the endorsement or replacement options and the cost of each.
We work to endorse or re-place bookkeeper PI for tax agent services with the original retroactive date preserved. With the schedule and the new fee split in hand, terms usually come back within a day or two.
Last updated: 05/09/2026