The accounting failures that cost small businesses most, how ATO penalties and director liability work, and where to check registrations or complain.
The most expensive accounting bill is rarely the accountant's invoice. It is the penalty for a late lodgement, the interest on a debt left to grow, a director penalty notice, or the clean-up after an unregistered adviser. These guides describe those patterns and how to avoid them.
Start with the small business accounting mistakes that cost most. Then read how ATO late lodgement penalties and interest charges work, what director penalty notices mean for company directors, and the risks of using an unregistered tax adviser. The record keeping guide covers the five-year rule and software exits, the Payday Super guide covers the new super timing, and the complaints guide lists the Tax Practitioners Board, professional bodies, the Australian Small Business and Family Enterprise Ombudsman and state commissioners.
This is general information, not tax advice. If you have received a penalty notice or a director penalty notice, speak with a registered tax agent or lawyer promptly, because some options have short deadlines.
Mistakes, Penalties and Official Sources
How the ATO's failure to lodge on time penalty, the general interest charge and shortfall penalties work for small businesses, with worked examples and how to reduce them.
Mistakes, Penalties and Official Sources
What records an Australian small business must keep, for how long, in what form, how digital copies and software exits work, and how good records lower your accountant's fee.
Mistakes, Penalties and Official Sources
How to complain about an Australian accountant, tax agent, BAS agent or bookkeeper, from the firm itself to the TPB, professional bodies, ASBFEO, state commissioners and tribunals.
Mistakes, Penalties and Official Sources
How ATO director penalty notices work for Australian company directors, which debts they cover, the 21-day options, lockdown notices, new directors and how good accounting prevents them.
Mistakes, Penalties and Official Sources
What changed for Australian employers under Payday Super from 1 July 2026, the common timing, fund and contractor mistakes, the cost of the super guarantee charge and what to ask your BAS agent.
Mistakes, Penalties and Official Sources
The accounting and tax mistakes that cost Australian small businesses most, from mixing personal spending and late BAS to Division 7A, super timing and unregistered advisers.
Mistakes, Penalties and Official Sources
Why using an unregistered person to prepare your tax return or BAS for a fee is risky in Australia, how to check the Tax Practitioners Board register, red flags and what to do if it happens.
