Built for Australian Tax Agents
Lodge the whole client book before the October deadline — without four subscriptions.
Multi-client BAS, IITR, CTR, TTR, PTR and TPAR via SBR, agent declarations, bulk lodgement and a TPB-compliant audit trail — plus invoicing, bookings and a client pipeline from self-preparers. All-in-one for $0–$69/mo — replaces MYOB Tax + Xero HQ + HubSpot + Calendly.





The average sole-practitioner agency saves $145+/mo replacing MYOB Tax + Xero HQ + HubSpot + Calendly with OneBookPlus.
See practice pricingFree Tools & Resources
Tax agent vs BAS agent, education + experience pathways, four ongoing standards, 14-item Code of Conduct.
Open →Reference90hr/3yr (tax) and 45hr/3yr (BAS) rules — acceptable activities, technical proportion, 8-year recordkeeping.
Open →ReferenceBAS/IAS, ITR, company/trust/SMSF, FBT, TPAR, STP — self vs tax-agent program dates plus penalty tiers.
Open →Operator GuideAPES 305 mandatory elements, scope-creep defence, termination clauses, six fee structures.
Open →ComplianceTAA s284-75 safe harbour, FTL penalty unit math, remission grounds, TASA Code item 9 exposure.
Open →InteractiveInteractive — entity size, days late, penalty units + GIC. Includes remission likelihood ranges.
Open →Key takeaways
5The IITR form, re-imagined
The full FY25 IITR with accordion sections, live tax estimate, and a validation preview before you submit.

Client pre-fill from the ATO, salary/wages, interest, dividends — the whole income block validated as you type.
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Everything Your Practice Needs
OneBookPlus combines ATO lodgement, client management, invoicing, and practice analytics in one platform — so you can stop juggling multiple subscriptions.
Add unlimited clients with ABN validation, entity details, TFN storage (encrypted), and CUREL registration. See all your clients in one dashboard with their lodgement status and upcoming deadlines.
Lodge BAS, Company Tax Returns, Trust Returns, Partnership Returns, Individual Returns, and TPAR directly to the ATO. Your RAN and SSID are embedded in every submission as the registered intermediary.
Lodge dozens of BAS and tax returns in one batch. Select validated returns, review the summary, and submit sequentially with progress tracking. See results for each client in real-time.
Every lodgement follows the TPB-mandated review, verification, and declaration process. Agent declarations are recorded with timestamps. Full 7-year audit trail for compliance.
Bill your clients directly from OneBooksPlus. Create professional invoices for tax preparation, BAS lodgement, and advisory services. Track payments and outstanding balances per client.
Track your on-time lodgement rate against the ATO benchmark of 85%. See live BAS deadline counts — how many are due this month, how many are overdue — cross-referenced against your actual submission history. PI insurance expiry alerts so nothing slips through.
Free plan available · No credit card · MFA-secured ATO access
Free Website Included
Stop paying $30–80/mo to Wix or Squarespace — and skip the $1,500–3,000 up-front for a designer. Every OneBookPlus tax agent gets a branded booking page on the free plan. Want it on your own domain like a proper business website? $15/mo and we host it for you.
your-business.onebookplus.com.auoronebookplus.com.au/book/your-businessyourbusiness.com.au— custom branded domain, we host the siteA sole trader books a 30-minute tax-return appointment at 9pm through your booking page while you're offline. It checks your Google Calendar first, lands in your dashboard with their entity type and ABN — ready to confirm in the morning.
Brand color picker in settings. Logo upload. Trade licence number shown on every page so customers know you're legit.
Individual tax return from $150. Quarterly BAS lodgement $180. Customers see prices before booking — kills the price-shopping phone calls.
70%+ of tax agency searches happen on phones. Your booking page is built mobile-first; loads in under 2 seconds on 4G.
Already own yourbusiness.com.au? Add the Booking Website app ($15/mo) and point your domain at the booking page we host for you. We don't sell domains — keep yours wherever you registered it.
Schema.org markup for tax agency services + suburbs you cover. Google finds you for 'tax agent in [suburb]' searches.
Tax agents website cost — typical
Website builder
Wix, Squarespace or similar
Web hosting + SSL
Bundled in builders; separate if custom site
Designer (one-off)
Only if you want a custom-built site
Bookings on Calendly
Separate from your website
Typical recurring total
~$60–100/mo
+ $1,500–3,000 up-front if you hire a designer
With OneBookPlus
Your total
$0–15/mo
See it in action
Not mockups — the real practice screens for a working day in tax season.
Prepared activity statements waiting on your agent declaration — G1, 1A, G11, 1B validated. Tick, confirm SBR credentials, lodge dozens in one batch with PLS receipts back per client.

Real-time profit & loss for every client entity, so when you prep the CTR or IITR the numbers are already reconciled against the bank feed — no quarter-end scramble.

Live BAS-due counts, your on-time lodgement rate against the ATO's 85% lodgement-program benchmark, and PI-insurance expiry alerts so nothing slips the program.

Simple Setup
Select 'Tax Agency' during onboarding. Your agent profile and ATO connection are set up automatically. Enter your RAN, TPB number, and confirm PI insurance.
Add clients individually or bulk-import from CSV. ABN validation happens automatically via the ABR. Register client-agent relationships via CUREL. Import an existing client list in minutes.
Select a client, choose the form type, and prepare. Data auto-populates where possible. Review every field, confirm accuracy through the TPB-compliant workflow.
Lodge individually or in bulk. Receipts appear instantly. Invoice your client for the work. Track everything in the audit log.
Most agencies import their client list and connect the ATO within 30 minutes of signup
100%
TPB-compliant review and declaration workflow
5 years
Automatic audit log retention
All forms
BAS, CTR, TTR, PTR, IITR, TPAR, FBT, STP
$49/mo
Per agency — unlimited clients
How We Compare
| Feature | OneBookPlus | LodgeiT | Xero Tax |
|---|---|---|---|
| Multi-client management | |||
| BAS lodgement via SBR | |||
| All tax return types (CTR, TTR, PTR, IITR) | |||
| Bulk lodgement | — | ||
| Built-in client invoicing | — | — | |
| Bookings & appointments | — | — | |
| CRM & contact management | — | — | |
| Client pipeline from self-preparers | — | — | |
| All-in-one platform (no extra subscriptions) | — | — | |
| Price | $49/mo | From $33/mo | From $30/mo + Xero sub |
The Network Effect
Sole traders and individuals use OneBookPlus to prepare their income tax returns for free. But they can't self-lodge ITR through third-party software — the ATO blocks it. So they click “Connect to Agent” and get matched with you.
Sole trader prepares their ITR on OneBookPlus (free)
They can't lodge it themselves (ATO restriction for third-party software)
They click "Connect to Agent"
They're matched with your agency on the platform
You receive a pre-populated return — saves hours of data entry
You review, lodge via PLS, and charge the client
OneBookPlus handles invoicing and payment
More individuals on the platform = more leads for you. More agents = better matching for individuals. Everyone wins.
Scroll through the day from morning to 5pm: the AI receptionist answers and books a missed call, the work runs from the app, the GST invoice is sent on the spot, payment lands and the books balance themselves, a five-star review is requested automatically, and the day closes with the ledger already written.
8:20am
While you're mid-lodgement
It's Priya's first year as a sole trader and her first BAS is due. She calls the first tax agent on Google — you.
AI Receptionist
The AI answers in two rings, books an 11:00 am consult, and emails her a checklist — while you keep lodging.
In the consult
Engagement card on screen: her docs, prior-year notes and a pre-filled checklist. Straight to advice, no paper shuffle.
Between appointments
One tap turns the consult into a GST invoice with a pay link. No month-end billing run, no chasing.
While you're with a client
Card payment lands, the books update themselves, and $80.00 GST is set aside for your own BAS.
Reputation on autopilot
Two hours after payment — the sweet spot — the AI asks for a review. Priya leaves five stars.
The day closes itself
You lodged eight returns and won a new client. The book did the rest.
$0
collected
0
admin tasks done by AI
0
evenings lost
Practice pricing
Start free, upgrade when the client book justifies it. No per-lodgement fees, no per-seat tax, no annual lock-in. Add the Tax Lodgement app for unlimited-client SBR lodgement when you're ready.
Free
$0/forever
Onboard your first clients today — no credit card.
Starter
$29/mo
Replaces HubSpot + Calendly + your invoicing tool.
No card · Drops to Free if you don't upgrade
Growth
$69/mo
For firms running staff, marketing and the self-preparer pipeline.
Prices in AUD inc. GST. The Tax Lodgement app ($49/mo) adds unlimited-client SBR / PLS lodgement on any plan. Stripe processing fees apply to card payments (1.7% + 30¢ AU cards). Full plan comparison →
Already on another tool?
Most agencies move across in a single evening. Export your client list as CSV from your current tool, import it into OneBookPlus with the bulk importer — ABNs revalidate against the ABR automatically — and you're ready to lodge tomorrow morning.
Switch from
Built-in AI
You're in back-to-back meetings — new enquiries hit voicemail and go cold before you call back.
OneBookPlus
AI Receptionist · incoming call
“I need help with my BAS — can we book a call?”
If you don't answer, the AI books it — Consultation · Wed 11:00am — and texts a confirmation.
Built in Melbourne, AU
ATO-ready from day one
256-bit encryption
No credit card needed
Common questions about OneBookPlus for registered tax agents and BAS agents.
Yes. OneBookPlus is a registered Digital Service Provider with the ATO. We connect via the secure Standard Business Reporting (SBR) gateway using PLS (Practitioner Lodgement Service) for tax agents, and direct lodgement for businesses.
Absolutely. When setting up your agent profile, select 'Registered BAS Agent'. You'll be able to lodge BAS, IAS, and TPAR for your clients. Income tax return forms (CTR, TTR, PTR, IITR) will be hidden since they require tax agent registration.
Add clients with their ABN (validated via the ABR), contact details, entity type, and TFN (encrypted at rest). Register the client-agent relationship with the ATO via CUREL. Then prepare and lodge any form type for that client — their details are pre-populated.
It depends what you need alongside lodgement. LodgeiT is a strong, focused lodgement tool, and many agents pair it with Xero or MYOB for the books and a separate CRM for clients. OneBookPlus is the all-in-one alternative: beyond SBR/PLS lodgement (BAS, IITR, CTR, TTR, PTR, TPAR), you also get client invoicing, appointment bookings, CRM, and a built-in pipeline of sole traders who prepare their ITR on the platform and need an agent to lodge. If you'd rather run one tool than stitch three together, that's the difference.
Sole traders and individuals use OneBookPlus to prepare their income tax returns for free. Since they can't self-lodge ITR through third-party software, they click 'Connect to Agent' and get matched with a tax agency on the platform. You receive a pre-populated return — saving hours of data entry — and lodge it for a fee.
No. The $49/mo price covers unlimited clients. Whether you have 5 clients or 500, the price is the same.
MFA is mandatory for all ATO access. Every action is logged with a 5-year audit trail (matching the ATO statutory record-keeping period for tax agents). TFNs are encrypted at rest. Sessions are idle-locked after 15 minutes of inactivity and require re-authentication. ABN validation is re-checked every 30 days.
The Practitioner Lodgement Service (PLS) is the ATO's electronic channel that lets registered tax and BAS agents lodge returns, activity statements, and reports for their clients through SBR-enabled software. OneBookPlus connects to the SBR gateway so agents lodge BAS, IITR, CTR, TTR, PTR, and TPAR with their RAN and SSID embedded as the registered intermediary.
About the author
Founder & CEO, OneBookPlus
Bishal has over a decade of experience in digital marketing, web development, and small business consulting across Australia. He has worked extensively with Australian accounting practices and tax agents, building tools specifically for BAS lodgement, client management, and ATO compliance.
Most independent Australian tax practices run on a stack that never quite agrees with itself. You prep returns in MYOB Tax or Xero Tax at $95–$135/month, manage clients in a spreadsheet or HubSpot, take appointments through Calendly, and raise fee invoices in a fourth tool. The PI-insurance renewal lives in your inbox, the CPD log (90 hours over three years for tax agents, 45 for BAS agents) is a Word doc you update in a panic before a TPB renewal, and the lodgement-program due dates are scattered across the ATO portal and your own memory. When October hits and 45 returns are due in a month, the cracks show — and a late lodgement risks both the client's FTL penalty ($313 per 28 days for small entities) and your standing on the agent lodgement program.
OneBookPlus rebuilds the practice around the client and the lodgement. Add clients with ABN validation against the ABR, entity type and an encrypted-at-rest TFN; register the client-agent relationship via the ATO's client-update channel. Prepare BAS, IITR, CTR, TTR, PTR and TPAR with data pre-filled where the ATO allows it, review every field against the validation rules, capture the agent declaration with a timestamp, and lodge — individually or dozens at once in a bulk batch — straight through the SBR gateway with your RAN and SSID embedded as the registered intermediary. Every edit, login and submission writes to a tamper-evident audit trail kept for the five-year statutory period.
The day starts on the deadline dashboard — how many BAS are due this month, how many returns are overdue, your on-time rate against the ATO's 85% lodgement-program benchmark, and a PI-insurance expiry alert before it lapses. Sort the client book by deadline and work down it: review the prepared return, confirm deductions D1–D15 on an IITR or G1/1A/G11/1B on a BAS, tick the agent declaration, lodge. The PLS receipt lands back against the client in under a minute and an automatic email sends them their tax summary, estimated refund and a copy of the receipt. Fee invoices for the preparation work raise from the same client record with a Pay Now link — no re-keying into a separate accounting package.
Connect each business client's bank account via CDR Open Banking and transactions flow in daily, so the BAS G-codes are reconciled before you open the form rather than at quarter-end. Your own practice books run on the same engine — client fee payments match against open invoices automatically, software subscriptions and PI-insurance premiums categorise as practice expenses, and the AI categoriser learns your chart of accounts over time. Your own quarterly BAS — GST collected on fees, GST credits on purchases, net owing — is prepared in one click, so the agency that lodges for everyone else isn't the one scrambling at the deadline.
Sign up free — no credit card, no lock-in. Select “Tax Agency” during onboarding and OneBookPlus pre-configures your agent profile, the SBR connection, an AU chart of accounts and fee-invoice templates carrying your RAN. Import your client list via CSV from LodgeiT, MYOB Tax, Xero Tax or HandiTax — ABNs revalidate against the ABR automatically. Enter your RAN, SSID and PI-insurance cover, add the Tax Lodgement app ($49/month) for unlimited-client SBR lodgement, and you can be lodging your first BAS the same afternoon. Switching from a MYOB Tax plus HubSpot plus Calendly stack typically takes a single evening.
Join the next generation of tax professionals. Lodge for all your clients, get new clients through the pipeline, and run your entire practice from one platform.
Get Started FreeLast reviewed and updated: by Bishal Shrestha
Authoritative sources
We cite the primary source for every regulatory claim on this page so you can verify directly. These are the bodies whose published rules and schedules OneBookPlus aligns with for tax-agent and BAS-agent workflows.
Industries
Free for sole-practitioner tax agents
60-sec sign-up · No card · GST & BAS ready
From the blog
Practical guides and explainers from the OneBookPlus blog, grouped by topic.
The founder of OneBookPlus on the Melbourne-cafe origin story, what 200 conversations with Australian SMBs revealed about juggling 5–10 disconnected tools, and an honest checklist for choosing business software in Australia.
A practical guide to every tax deduction Australian sole traders can claim — from home office and vehicle costs to super contributions, depreciation, and the small business deductions most people miss. Updated for 2025–26 with worked examples and ATO record-keeping rules.
A practical guide to choosing between sole trader, partnership, company, and trust structures in Australia — covering ABN registration, tax implications, liability, GST obligations, and when to switch structures as you grow.
A practical guide for entrepreneurs in India and Nepal — covering business registration, GST/VAT compliance, invoicing requirements, and digital tools to manage your business from day one.
Who it's for
From registered tax agents to BAS agents — OneBookPlus is your practice command centre.
Lodging ITRs, CTRs, and BAS for a client base of 100-500+. Needs ATO integration, bulk lodgement, and practice analytics.
Specialising in quarterly BAS lodgement. Needs streamlined BAS prep, auto-populated fields, and lodgement history tracking.
Partners and staff managing hundreds of clients across tax, BAS, and advisory. Needs role-based access, audit logs, and firm-wide dashboards.
Just started your own practice. Needs affordable practice management, client onboarding, and ATO connection without enterprise pricing.
Stop overpaying
Most small businesses stitch together 4-6 tools that don't talk to each other. Here's what that typically costs.
Real-world scenario
How a Brisbane tax agent uses OneBookPlus during tax season
Karen opens her practice dashboard at 8:30am — 340 clients in her book, 45 tax returns due this month. She sorts by deadline and picks up where she left off yesterday.
For each client, she reviews their financial data: income from employment, rental properties, investment dividends, and business income. OneBookPlus pre-fills the return from connected data sources. She reviews, adjusts deductions, and validates against ATO rules before lodging.
By noon, she's lodged 8 returns. Each client gets an automatic email with their tax summary, estimated refund amount, and a copy of the lodgement receipt.
In the afternoon, she handles BAS lodgements for her quarterly clients. The BAS form pulls GST data automatically — she reviews G1, 1A, G11, 1B, validates, and lodges in batches. Her practice dashboard shows 92% of this month's lodgements complete, revenue tracking at $28,000 for the month, and 3 new client enquiries from her booking page.
How we compare
See how we compare to the tools tax agents typically use.
| Feature | OneBookPlus | MYOB Tax | Xero Tax | LodgeiT |
|---|---|---|---|---|
| BAS preparation & lodgement | Yes | Yes | Yes | Yes |
| Tax return preparation | Yes | Yes |
| Yes |
| Yes |
| Client management CRM | Yes | No | No | No |
| Practice invoicing | Yes | Yes | Yes | No |
| Client booking page | Yes | No | No | No |
| Email marketing | Yes | No | No | No |
| Practice analytics dashboard | Yes | Yes | Yes | Yes |
| Audit trail & compliance | Yes | Yes | Yes | Yes |
| Bulk lodgement | Yes | Yes | Yes | Yes |
| Affordable entry price | Yes | No | No | Yes |
| Price | From $0/mo | $135+/mo | Contact sales | $55+/mo |