Overdue BAS & GST

Why unlodged BAS compounds faster than income tax

A BAS is due every quarter, so a business that stops lodging accumulates four failures a year rather than one. Each unlodged statement can attract a failure to lodge on time penalty, calculated in penalty units, and the general interest charge accrues daily on any unpaid balance underneath.

The second problem is visibility. When you stop lodging, the ATO cannot see what you actually owe. It may issue a default assessment based on its own estimate of your turnover, and those estimates are almost always higher than the real figure. Lodging the actual statements replaces the estimate with the truth, which is often the single biggest reduction available to a business in this position.

You may be owed money, not just liable for it

Every quarter you have not lodged is a quarter where GST credits on your business purchases have not been claimed. For a business with real expenses - stock, subcontractors, fuel, tools, rent, software - the input tax credits can materially offset the GST you collected.

There is a limit. Under GST law you generally have four years from the due date of the relevant BAS to claim an input tax credit. Once that window closes the credit is gone permanently. This is why a backlog older than four years is genuinely urgent: waiting costs money that cannot be recovered later.

How we work through a BAS backlog

We start by pulling your full ATO lodgement and account history through the tax agent portal, so we can see exactly which periods are open, what has been estimated, and what is owing. That takes the guesswork out before any bookkeeping starts.

We then reconstruct each quarter from whatever records exist. Bank statements alone are usually enough to build a defensible BAS if the accounting file is incomplete or was never set up. Where records are genuinely missing, we use reasonable estimates supported by the documentation you do have, and we note the basis so the position can be explained if it is ever queried.

Statements are lodged in chronological order so the ATO account resolves cleanly, then we deal with the resulting balance - a payment plan where appropriate, and a remission request for penalties where there is a reasonable explanation for the delay.

Penalty remission is a request, not an entitlement

The ATO can remit failure to lodge penalties where the delay was caused by circumstances outside your control - illness, a family crisis, a natural disaster, a business partner who disappeared with the records. It weighs your compliance history and whether you came forward voluntarily.

We prepare remission requests based on your actual circumstances and the supporting evidence available. We cannot promise a specific outcome, because that decision belongs to the ATO. What we can say is that coming forward before enforcement action starts consistently produces better results than waiting to be found.

What it costs and how long it takes

BAS catch-up is quoted as a fixed fee per period once we have seen the scope, so the cost is known before work begins. Multi-period discounts apply when several quarters are handled together, because most of the reconstruction work is shared.

Turnaround depends on record quality. A business with a clean bank feed and a handful of quarters is usually lodged within days of providing access. A multi-year backlog rebuilt from paper records takes longer, and we will tell you which one you are before you commit.