How this usually works
The fastest way to answer “how much does BAS lodgement cost” is to map your situation: monthly or quarterly, current or overdue, payroll or no payroll, transaction volume, and whether your books are already reconciled in software like Xero, MYOB or QuickBooks.
Providers then price the work by scope: reconcile and review, prepare activity statement, lodge as a registered BAS/tax agent, and handle ATO questions. Cleanup, software fixes and back‑dated BAS are priced separately from routine lodgement.
Typical BAS lodgement costs in Australia
- Quarterly BAS, books current and low complexity: $110–$330+ per lodgement.
- Monthly IAS (PAYG/GST instalments), simple: $55–$150 per submission.
- BAS with moderate reconciliation or review (adjustments, minor fixes): $220–$550+ per lodgement.
- Catch‑up or overdue BAS (per period), including cleanup: $300–$1,200+ depending on volume and condition of records.
- Bookkeeping packages that include BAS: typically $250–$800+ per month based on transactions, payroll, and reporting needs.
Pricing varies by scope, urgency and who does what. Fixed‑fee BAS is common when your books are current; hourly rates usually apply to cleanup and once‑off projects.
Australian context to keep in view
- BAS reports GST, PAYG withholding and other obligations to the ATO; IAS is often used for PAYG instalments or withholding when no GST is reported.
- Registered BAS agents and tax agents can lodge on your behalf and may access ATO lodgement concessions that extend due dates when you’re on their client list.
- Late lodgement can trigger ATO penalties and interest. Engaging an agent early can help with extensions, a catch‑up plan and communication with the ATO.
If you’re unsure whether you need a BAS agent or accountant, see BAS Agent vs Accountant. If you want to prepare more in‑house, review Best Way to Prepare BAS.
What changes the price
Scope
Confirm what’s included: bank reconciliations, review adjustments, activity statement preparation, agent lodgement, ATO follow‑ups and end‑of‑quarter reports.
Software fit
Clean, reconciled data in fit‑for‑purpose software reduces time and cost. Migrations, app integrations and file cleanups add cost.
Turnaround and communication
Urgent or after‑hours work may attract surcharges. Ask how documents are requested, how queries are handled and what your approval step looks like.
Commercial fit
Compare fixed fees for routine BAS versus hourly billing for cleanup. Get separate lines for catch‑up work so future quarters are cheaper and predictable.
Ways to lodge and what they cost
- Self‑lodge via ATO Online or software: no agent fee, but you carry the time, risk and any corrections. Software subscription costs may apply.
- Bookkeeper/BAS agent: common for small businesses needing accurate prep and agent lodgement, usually on a fixed fee when books are current.
- Tax accountant: useful when BAS links to tax planning, structures or complex adjustments; expect higher review time for technical issues.
- Ongoing package: bookkeeping + BAS + payroll support for steady cashflow and consistent quality; good value if you have regular transaction volume.
If you only need a one‑off BAS or a catch‑up across several periods, ask for a staged quote: cleanup first, then routine BAS on a lower fixed fee.
How to keep your BAS bill down
- Keep bank feeds reconciled and label transactions regularly.
- Use receipt capture and attach documents to key purchases.
- Match payroll/STP and super on time; fix issues before BAS.
- Avoid last‑minute rush by agreeing a quarter‑end checklist.
- Separate once‑off cleanup from future fixed‑fee BAS work.
Best next steps
Write down the outcome you want: a one‑off BAS, ongoing bookkeeping + BAS, or a catch‑up across several quarters. Share your software, transaction volume, reporting frequency and any deadlines.
Then request an itemised quote that separates cleanup from routine lodgement, clarifies turnaround time and confirms whether agent lodgement concessions apply.
If you’re ready to move, compare BAS agent services or find a BAS agent, or use the form below for a quick estimate tailored to your situation.
Frequently asked questions
How Much Does BAS Lodgement Cost?
For a simple quarterly BAS where your books are current, budget $110–$330+ per lodgement with a registered BAS or tax agent. Monthly IAS is commonly $55–$150 per submission. Work that involves cleanup, catch‑up BAS, fuel tax credits, complex adjustments or urgent turnarounds can lift the fee to $300–$1,200+ per period. If you prefer a bundled option, bookkeeping + BAS packages often range from $250–$800+ per month depending on volume and payroll.
What should I check before deciding?
Confirm your reporting frequency (monthly vs quarterly), whether your accounts are reconciled, transaction volume, payroll/STP status, any overdue periods, and whether you need a BAS agent or tax accountant review. Ask providers to split one‑off cleanup from routine BAS, show what’s fixed fee vs hourly, and confirm expected due dates and agent concessions.
When should I get professional advice?
Get advice if you’re changing GST registration, dealing with mixed/complex supplies, claiming fuel tax credits, varying PAYG instalments, managing trust distributions or director loans, switching software, or catching up overdue BAS. These situations affect tax and risk and benefit from a registered agent’s review.
What is the safest next step?
Write a short brief (scope, timing, software) and request an itemised quote. If you want help now, use the form below to get a BAS lodgement quote, or compare BAS agent services first if you’re weighing options.