$75,000 GST threshold. 4 BAS quarters. 26+ ATO classification codes.
Every transaction classified to the correct GST code. Every BAS prepared with the correct period totals. Every lodgement instructed via the ATO Business Portal — or the run halts and tells you which classification failed.
Quick answer
Australian BAS / GST compliance is governed by four pillars: the BAS quarterly cycle (Q1-Q4 with deadlines 28 October / 28 February / 28 April / 28 July), GST classifications (standard 10%, Division 38 GST-free, Division 40 input-taxed), TPAR contractor reporting for 5 specific industries (annual by 28 August), and the ATO Business Portal lodgement workflow. XIntelliSync prepares all four; you lodge externally at bp.ato.gov.au or via your tax agent's software.
Why this lives on XIntelliSync, not on a tax agent's website
XIntelliSync prepares the BAS, the GST summary, and the TPAR. The ATO does the lodgement. We refuse to fake the acknowledgement.
Most accounting platforms calculate GST, generate a BAS report PDF, and ask you to manually re-key the numbers into the ATO Business Portal. The result is two systems of truth (yours + the ATO's) that drift the moment you forget to update one. XIntelliSync prepares the BAS, the GST summary, and the TPAR contractor report from one source-of-truth transaction ledger — then instructs you to lodge externally because we are not a registered ATO Digital Service Provider.
Two GST classifications, four BAS quarters, five TPAR-mandatory industries, and the $75,000 GST registration threshold. Get any one wrong and you're either underpaying tax (the ATO follows up with penalties + GIC) or overpaying (your accountant catches it 12 months later in the annual review). Per-transaction verification is the difference between a clean lodgement and a Failure to Lodge.
XGVS — 42 layers, 6 stages, 356+ gates across 34 compliance frameworks. Every action passes every gate that applies — or the action halts and tells you why. ATO DSP, BAS preparation, GST classification (Division 38 + Division 40), and TPAR contractor reporting are four of those 34. Your tax data, every transaction, every quarter.
See the BAS / GST cluster in the agent libraryWhy BAS / GST compliance is the second-most-expensive SMB risk surface (after payroll).
Four reasons the difference between a clean BAS and an ATO interest-charge accrual is per-transaction classification, not quarterly review.
Misclassification across Division 38 / 40 / standard 10% drives most BAS errors.
A vendor invoice marked taxable when it was GST-free, a property-management invoice mixed-supply when it should have been apportioned, a software-export invoice charged GST when it should have been GST-free under Division 38 export rules. Per-transaction classification is where most BAS errors accumulate.
BAS deadlines are 28 October / 28 February / 28 April / 28 July.
Lodging electronically via the ATO Business Portal (bp.ato.gov.au) or via a registered tax agent grants a 4-week extension on most quarters. Failure to Lodge attracts ATO penalties per quarter — they scale with entity size and the number of late lodgements.
TPAR is in addition to BAS, not in place of it.
Five industries (construction, cleaning, courier/road-freight, IT, security) must lodge TPAR annually by 28 August reporting all contractor payments. The 28 August deadline is independent of quarterly BAS deadlines. Many SMBs miss TPAR because it is annual and easy to forget between BAS cycles.
XIntelliSync prepares; you lodge externally.
XIntelliSync is not a registered ATO Digital Service Provider and does not lodge with the ATO on your behalf. The platform prepares the BAS, generates the lodgement file in the ATO-required format, and instructs you to lodge via bp.ato.gov.au or your tax agent's software. Your ATO acknowledgement reference comes from the ATO directly, not from XIntelliSync.
The Four Pillars
Quarterly cycle. Classifications. TPAR. Lodgement. Every BAS runs through all four.
Each pillar is a system of ATO rules and obligations that exists independently of XIntelliSync. The platform's job is to prepare, verify, and instruct — not to bypass.
BAS Quarterly Cycle
Four quarters per year. Two BAS lodgement paths.
Q1 Jul–Sep · Q2 Oct–Dec · Q3 Jan–Mar · Q4 Apr–Jun · Monthly required above $20M turnover
Quarterly BAS lodgement is the default for businesses with under $20M turnover. Each quarter has its own lodgement deadline (28 October / 28 February / 28 April / 28 July) plus a 4-week extension if lodging electronically via the ATO Business Portal or a registered tax agent. Failure to Lodge attracts ATO penalties scaled by entity size and number of late quarters.
GST Classifications
Standard 10%. GST-free Division 38. Input-taxed Division 40.
10% standard rate · 26+ ATO classification codes · Division 38 (GST-free) + Division 40 (input-taxed)
Most supplies attract 10% GST. Division 38 GST-free supplies include basic food (bread, milk, fresh produce), medical services, education courses, exports, and approved childcare. Division 40 input-taxed supplies include residential rent, financial supplies (insurance premiums, lending), and second-hand digital currency. The classification per transaction determines whether GST is charged, whether GST credits are claimable, and how the supply flows through the BAS.
TPAR — Taxable Payments Annual Report
Five industries report contractor payments annually.
Mandatory for: building & construction · cleaning · courier & road-freight · IT services · security/investigation/surveillance · Annual lodgement by 28 August
TPAR is an annual ATO lodgement required of businesses in five specific industries that pay contractors. The report captures each contractor's ABN, name, GST status, and total amount paid in the financial year. Lodged via the ATO Business Portal by 28 August each year (for the previous financial year ending 30 June). XIntelliSync prepares the TPAR data per contractor and instructs lodgement via the portal — no fake ACK numbers, no auto-submission.
ATO Business Portal Lodgement
PREPARE in XIntelliSync. LODGE at the ATO portal.
PREPARE → DOWNLOAD → INSTRUCT → CONFIRM · ATO Business Portal: bp.ato.gov.au · myGov for sole traders: my.gov.au
XIntelliSync is not a registered ATO Digital Service Provider and does not lodge anything with the ATO on your behalf. The platform prepares BAS, GST summary, and TPAR data, generates the lodgement file/figures, and instructs you to lodge via the ATO Business Portal (bp.ato.gov.au) — or via your tax agent's software, or via myGov for sole traders (my.gov.au). After you confirm the lodgement, XIntelliSync records the ATO acknowledgement reference in your audit log. Honest separation that respects ATO infrastructure.
What XIntelliSync actually does about BAS / GST / TPAR
Three binaries, all backed by 5+ tax-cluster agents shipping in production right now.
1. GST classification happens at transaction-time, not at BAS-time. The agent automated-gst-calculation classifies every transaction against the 26+ ATO classification codes — standard 10% taxable, Division 38 GST-free supplies (basic food, medical, education, exports, approved childcare), Division 40 input-taxed supplies (residential rent, financial supplies). If a transaction falls in a borderline category (e.g. mixed-supply restaurant takeaway vs dine-in), the gate trips and you classify before the BAS is prepared.
2. BAS preparation is one source-of-truth, not a manual re-key. The agent automated-bas-preparation pulls the GST classifications, the PAYG instalments, the FBT, the WET, and the LCT into one BAS lodgement file ready for the ATO Business Portal. The agent automated-tax-deadline-alerts tracks the lodgement deadline per quarter (Q1 28 Oct, Q2 28 Feb, Q3 28 Apr, Q4 28 Jul + 4-week tax-agent extension) and automated-regulatory-filing prepares the lodgement bundle.
3. TPAR contractor reporting is automatic for the 5 mandatory industries. Building & construction, cleaning, courier & road-freight, IT services, security/investigation/surveillance — every contractor payment in these industries is captured throughout the year and prepared for the 28 August annual TPAR lodgement. The agent automated-tax-return-preparation handles the cross-reference against ABN Lookup so contractor ABN status is verified at payment-time, not at TPAR-time.
What XIntelliSync deliberately does NOT do. No ATO lodgement on your behalf — XIntelliSync is not a registered Digital Service Provider and we won't fake an ATO acknowledgement. No Division 38 vs Division 40 interpretation calls — if your supply is borderline (mixed-supply, GST-inclusive vs GST-exclusive), the call stays with you and your tax agent. No GST registration on your behalf — once your turnover crosses $75,000, you register at ato.gov.au directly.
Five tax agents. One source-of-truth ledger. Zero fake ATO lodgements. Every BAS, every GST classification, every TPAR contractor record prepared and instructed externally via the ATO Business Portal at bp.ato.gov.au.
See pricingWhere to lodge externally
After XIntelliSync prepares. Before you confirm.
XIntelliSync is not a registered ATO Digital Service Provider and does not lodge on your behalf. Once XIntelliSync prepares your BAS, GST summary, or TPAR, lodge externally at one of these official ATO portals:
ATO Business Portal — bp.ato.gov.au
For businesses with an ABN. Lodge BAS, STP Phase 2, TPAR, and other business activity reports. Requires myGovID + Relationship Authorisation Manager (RAM) access.
myGov — my.gov.au
For sole traders and individuals lodging via personal ATO Online Services. Link your ATO account once via myGov to manage individual BAS, super, and tax records.
ATO Online Services — onlineservices.ato.gov.au
The unified ATO online services entry point. Routes to ATO Online for individuals or to ATO Online Services for Business depending on your account type.
ATO main site — ato.gov.au
General ATO guidance, classification rulings, penalty calculators, due-date calendar, and registered tax agent lookup. The official source of truth for every BAS / GST / TPAR rule referenced on this page.
Tax Practitioners Board — tpb.gov.au/tax-agent-finder
Find a registered Australian tax agent or BAS agent for situations where professional lodgement is preferable to self-lodgement. Tax agents typically have a 4-week lodgement extension on standard BAS deadlines.
All 22+ industries served
BAS / GST / TPAR nuances by industry.
Different industries have different GST classifications (Division 38 GST-free, Division 40 input-taxed, standard 10%), different TPAR obligations, and different BAS-period complexity. Below: the most-relevant BAS/GST feature for every industry XIntelliSync serves.
Construction
TPAR mandatory — building & construction industry must report contractor payments annually by 28 August. GST on supplies, GST credits on materials. Progress claim invoicing creates BAS timing complexity.
Healthcare
Many medical services GST-free under Division 38-7 (medical services) and Division 38-10 (other health). Allied health may be partially GST-free. Pharmacy mixed — most prescription medicines GST-free, retail products taxable.
Hospitality
Restaurant meals consumed on-premises taxable at 10% GST. Takeaway food may be GST-free if it qualifies as basic food per Division 38. Liquor always taxable. Tip pooling does not affect GST.
Retail
Most retail goods 10% GST taxable. Basic food items (bread, milk, fresh fruit/veg, plain meat) GST-free under Division 38 Schedule 2. Mixed baskets require per-line classification — software with up-to-date ATO classification codes is essential.
Consulting / Professional Services
Most consulting services 10% GST taxable. Exports of services may be GST-free under Division 38. Sub-contracted work to other GST-registered consultants — GST on supplier invoice claimable as input credit. TPAR may apply for cleaning/IT/security services.
Digital / Tech
Software licences and SaaS subscriptions to AU customers: 10% GST. Exports to overseas customers: typically GST-free under Division 38 export rules. TPAR mandatory for IT services to other businesses. Stripe/payment-processor fees include GST claimable as input credit.
Finance
Most financial supplies INPUT-TAXED under Division 40 — no GST charged on supply, no GST credits claimable on related expenses. Fee-based services (advisory, brokerage) often taxable at 10% GST. Mixed-supply businesses must apportion input credits.
Legal
Legal services 10% GST taxable. Trust account holdings are NOT consideration for supply — no GST until earned/billed. Disbursements (court filing fees, expert reports) may be GST-free or taxable per ATO rulings. Expense recoveries treated per the Goods and Services Tax Ruling GSTR 2000/37.
Childcare
Childcare services GST-free under Division 38-145 if approved-services or registered-carer. CCS subsidy reconciliation creates BAS timing complexity. Materials and supplies (10% GST) claimable as input credits.
Education
Most education courses GST-free under Division 38-85 (education courses) when delivered by registered training organisations or approved tertiary providers. Course materials may be partially taxable. International student fees typically GST-free under Division 38 export rules.
Manufacturing
Manufacturing supplies generally 10% GST taxable. Exports GST-free under Division 38. Raw materials with GST claimable as input credits. Capital purchases (machinery, vehicles) GST claimable in the period acquired. Quarterly BAS most common; monthly required if turnover exceeds $20M.
Transport
Road freight services 10% GST taxable. International freight (export and import legs) typically GST-free under Division 38. Fuel tax credits available — separate claim through BAS. TPAR mandatory for road freight services to businesses.
Mining
Mining production 10% GST taxable; exports GST-free. Substantial fuel tax credits, R&D tax incentive offsets, and capital allowances flow through BAS. Native title and royalty payments have specific GST treatment per ATO mining-industry rulings.
Agriculture
Most fresh food (bread, milk, fruit, vegetables, meat) GST-free under Division 38 Schedule 2. Processed/packaged food typically taxable. Fuel tax credits available for off-road farm machinery. Livestock sales GST-free between primary producers.
Fitness
Fitness services 10% GST taxable. Membership fees GST applies. Equipment retail (apparel, supplements) taxable. Personal-trainer commissions to contractors may trigger TPAR if industry-wide reporting becomes mandatory.
Non-profit
Charitable not-for-profits with GST registration: most fundraising events GST-free under Division 38 if non-commercial test passes. Gifts and donations not consideration — no GST. Government grants may or may not be consideration depending on conditions. NDIS supports GST-free under Division 38-38.
Events
Event ticket sales 10% GST taxable. Bundled packages (ticket + food + accommodation) require apportionment per ATO events-industry guidance. Sponsorship income generally taxable. Door-takings reconciliation drives BAS-period accuracy.
Creative
Creative services to AU clients 10% GST taxable. International commissions GST-free under Division 38 export rules. Royalty income taxable. TPAR may apply for security/courier/cleaning sub-contractors used in production.
Marketing
Marketing services 10% GST taxable. Media spend pass-through (Google Ads, Meta Ads) — GST treatment depends on whether you re-bill or just facilitate. Overseas service exports GST-free under Division 38.
Human Resources
HR consulting and recruitment services 10% GST taxable. Placement fee payments are taxable supplies. Background-check pass-through costs require apportionment if charged at-cost vs marked-up.
Insurance
General insurance premiums INPUT-TAXED under Division 40 — no GST on the premium portion, but the policy holder may claim a decreasing adjustment. Life insurance premiums GST-free. Brokerage and intermediary services taxable at 10% GST.
Real Estate
Residential rent INPUT-TAXED under Division 40 — no GST charged, no GST credits on related expenses. Commercial property rent generally 10% GST taxable. Sale of new residential premises taxable; existing residential GST-free under Division 38. Property management fees 10% GST taxable.
Industry-specific GST classification and TPAR rules verifiable on ato.gov.au. Specific Division 38 / Division 40 rulings published per industry.
Australian BAS / GST compliance. Questions answered.
When does my Australian business need to register for GST?+
When is BAS due?+
What's the difference between Division 38 GST-free and Division 40 input-taxed?+
Which industries must lodge TPAR?+
Does XIntelliSync lodge BAS, GST, or TPAR with the ATO?+
What happens if I miss a BAS lodgement deadline?+
Can I correct a BAS after lodging it?+
How does XIntelliSync verify each BAS before I lodge?+
Keep reading
Go deeper on any pillar.
Every linked page below goes deeper on one part of what you just read.
XGVS BAS verification runs on every transaction.
From Starter tier ($97/month AUD). BAS preparation, GST classification across Division 38 / 40 / standard 10%, TPAR data assembly, and per-quarter XGVS verification — included from Starter tier upward. The verification is the foundation, not the upgrade. First month 50% off.