Built for Australian Tax Agents
Practice Management for Tax Agents & BAS Agents
Prepare and validate the whole client book before the October deadline, without four subscriptions.
Multi-client BAS, IITR, CTR, TTR, PTR and TPAR preparation and validation, agent declarations, bulk review and a TPB-compliant audit trail, plus invoicing, bookings and a client pipeline from self-preparers. All-in from $29/mo, the Free plan plus the Tax Practice Suite, replacing MYOB Tax + Xero HQ + HubSpot + Calendly. The plans themselves run $0 to $69/mo.
Free plan. No card required. · BAS & return preparation · TPB-compliant audit trail · Sign up in 60 seconds





Cut $66+/mo from your software stack by replacing MYOB Tax + Xero HQ + HubSpot + Calendly with OneBookPlus.
See practice pricingLodgement status. Direct ATO e-lodgement via SBR is in final ATO certification, prepare and validate BAS and returns today; we'll tell you the moment lodgement goes live on your account. Everything else here is live today: BAS & return preparation, multi-client & practice management, billable time & invoicing, tasks, practice reports, the CPD register, key-date tracking and client documents.
Free Tools & Resources
Reference material for TPB-registered practitioners
TPB Registration Guide
Tax agent vs BAS agent, education + experience pathways, four ongoing standards, 14-item Code of Conduct.
ReferenceTPB CPE Requirements
90hr/3yr (tax) and 45hr/3yr (BAS) rules, acceptable activities, technical proportion, 8-year recordkeeping.
ReferenceLodgement Deadline Calendar
BAS/IAS, ITR, company/trust/SMSF, FBT, TPAR, STP, self vs tax-agent program dates plus penalty tiers.
Operator GuideEngagement Letter Primer
APES 305 mandatory elements, scope-creep defence, termination clauses, six fee structures.
ComplianceSafe Harbour & FTL Penalties
TAA s284-75 safe harbour, FTL penalty unit math, remission grounds, TASA Code item 9 exposure.
InteractiveFTL Penalty & GIC Calculator
Interactive, entity size, days late, penalty units + GIC. Includes remission likelihood ranges.
Key takeaways
5- Built for TPB-registered tax agents and BAS agents, store your RAN, SSID and PI insurance ($2m+ minimum cover typical) per agent, and OneBookPlus embeds them in every ATO submission as the registered intermediary.
- Direct ATO e-lodgement via SBR is in final ATO certification, prepare and validate BAS and returns today; we'll tell you the moment lodgement goes live on your account.
Show 3 moreShow less
- Multi-client BAS preparation in bulk: prep and review BAS for dozens of clients in one workflow, with agent declaration capture and client signoff via secure portal link before anything is filed.
- TPB compliance scaffolding includes a CPD/CPE register (tax agents need 120 hours over 3 years; BAS agents 90 hours; both with a 20-hour annual minimum), client record retention for the 5-year statutory period, and a tamper-evident audit trail of every lodgement, edit and login.
- Free plan covers 10 invoices/month and 250 contacts; Starter is $29/month ($290 a year billed annually) and Growth is $69/month ($690 a year), billed in AUD. SBR-ready preparation and validation runs on the Tax Practice Suite app ($29/month on top of any plan, including Free): unlimited BAS and TPAR preparation, with income-tax returns $2 each after the first 5 free every month. That per-return price applies once direct e-lodgement is switched on; nothing is charged per lodgement before then.
The IITR form, re-imagined
Every section of the individual return, in one scroll.
The full FY25 IITR with accordion sections, live tax estimate, and a validation preview before you submit.

Personal & income details
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
A Modern Platform for Tax Professionals
OneBookPlus combines BAS and return preparation, client management, invoicing, and practice analytics in one platform, so you can stop juggling multiple subscriptions.
Multi-Client Management
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.
SBR-ready preparation and validation
Prepare and validate BAS, Company Tax Returns, Trust Returns, Partnership Returns, Individual Returns and TPAR, with your RAN and SSID carried as the registered intermediary. Direct ATO e-lodgement via SBR is in final ATO certification, prepare and validate BAS and returns today; we'll tell you the moment lodgement goes live on your account.
Bulk preparation and review
Work through dozens of BAS and tax returns in one batch. Select validated returns, review the summary, and track progress client by client. Direct ATO e-lodgement via SBR is in final ATO certification, prepare and validate BAS and returns today; we'll tell you the moment lodgement goes live on your account.
TPB-Compliant Workflow
Every lodgement follows the TPB-mandated review, verification, and declaration process. Agent declarations are recorded with timestamps. Full 7-year audit trail for compliance.
Client Invoicing Built In
Bill your clients directly from OneBookPlus. Create professional invoices for tax preparation, BAS lodgement, and advisory services. Track payments and outstanding balances per client.
Practice Reports & Key Dates
A practice-performance report, revenue collected, work-in-progress, billed time and on-time lodgement rate, plus a rolling ATO key-dates calendar (BAS quarters, super guarantee, STP, TPAR, FBT) with overdue and due-soon flags so nothing slips.
Billable Time & Practice Tasks
Track billable hours per client and roll them straight into an invoice, no re-keying. A task board handles follow-ups, lodgement deadlines and compliance to-dos, so every client obligation is tracked to done.
CPD Register & Client Documents
Log CPD against your TPB obligation (tax agents 120 hours over 3 years, BAS agents 90, with a 20-hour annual minimum) with live progress, and file working papers, signed returns and source documents securely per client.
Free plan available · No credit card · MFA-secured ATO access
Free booking page included
Your tax agency business gets a booking page. Free.
Stop paying a website subscription you do not need, and skip the up-front designer quote. Every OneBookPlus tax agent gets a branded booking page on the free plan. Want it on your own domain like a proper business website? The Website Builder app is $29/mo and we host it for you.
your-business.onebookplus.com.auoronebookplus.com.au/book/your-businessyourbusiness.com.au: your own branded domain, hosted by us24/7 emergency callout booking
A 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.
Branded with your colours, logo & licence
Brand color picker in settings. Logo upload. Trade licence number shown on every page so customers know you're legit.
Show service prices upfront
Individual tax return from $150. Quarterly BAS lodgement $180. Customers see prices before booking, kills the price-shopping phone calls.
Mobile-first: looks great on phones
Your booking page is built mobile-first, so a customer searching on a phone can book without pinching to zoom.
Bring your own domain: we host the site
Already own yourbusiness.com.au? Add the Website Builder app ($29/mo) and point your domain at the site we host for you, through a guided DNS and SSL wizard. We don't sell domains, keep yours wherever you registered it.
Local SEO baked in
Schema.org markup for tax agency services + suburbs you cover. Google finds you for 'tax agent in [suburb]' searches.
Tax agents website cost, typical
What tax agents pay for a website
- From $24/mo
Website builder
Squarespace's cheapest plan billed monthly, verified 2 August 2026. Wix publishes no fixed Australian rate.
- $15 to $40/mo
Web hosting + SSL
Bundled in builders; separate if custom site
- $1,500 to $3,000
Designer (one-off)
Only if you want a custom-built site
- From US$10/mo
Bookings on Calendly
Per seat, billed in US dollars, verified 2 August 2026. Separate from your website.
Typical recurring total
~$39 to $64/mo
+ US$10/mo per seat if you add Calendly for bookings, billed in US dollars, and $1,500 to $3,000 up-front if you hire a designer
With OneBookPlus
Included on every plan
- Branded booking page, free plan
- Hosting + SSL, free plan
- 24/7 customer self-booking, free plan
- Connect your own domain with the Website Builder app, +$29/mo (BYO)
Your total
$0 to $29/mo
See it in action
The screens a client file passes through.
Not mockups, the real practice screens for a working day in tax season.
BAS lodgement queue
Prepared activity statements waiting on your agent declaration, G1, 1A, G11, 1B validated. Tick, confirm SBR credentials, and work through dozens in one batch. Direct e-lodgement is in final ATO certification, so the finished batch is filed through your usual channel for now.

Client P&L at tax time
Real-time profit & loss for every client entity, built from the invoices and expenses already recorded, so the numbers are there when you prep the CTR or IITR.

Deadline & on-time dashboard
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
From Sign-Up to First Prepared Return in Minutes
Sign up as a Tax Agency
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 your clients
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.
Prepare and review
Select a client, choose the form type, and prepare. Data auto-populates where possible. Review every field, confirm accuracy through the TPB-compliant workflow.
Finalise and get paid
Validate individually or in bulk, capture the agent declaration, then file through your usual channel. Direct ATO e-lodgement via SBR is in final ATO certification, prepare and validate BAS and returns today; we'll tell you the moment lodgement goes live on your account. Invoice your client for the work and track everything in the audit log.
Import your client list and connect the ATO the day you sign up
Who it's for
Built for every tax professional
From registered tax agents to BAS agents. OneBookPlus is your practice command centre.
Registered Tax Agent
Lodging ITRs, CTRs, and BAS for a client base of 100-500+. Needs bulk preparation, an SBR-ready connection and practice analytics.
BAS Agent
Specialising in quarterly BAS lodgement. Needs streamlined BAS prep, auto-populated fields, and lodgement history tracking.
Multi-Partner Firm
Partners and staff managing hundreds of clients across tax, BAS, and advisory. Needs role-based access, audit logs, and firm-wide dashboards.
New Practice
Just started your own practice. Needs affordable practice management, client onboarding, and ATO connection without enterprise pricing.
What a four-tool stack costs each month
Named tools, at each vendor’s own cheapest published plan, and ours underneath. Vendor pricing changes, so check each one before you decide.
Or use OneBookPlus
$69/mo
Everything in the list above, on one bill.
Start freeNo credit card · Free forever · Cancel anytime
Example walkthrough
Monday in lodgement season
An illustrative walkthrough of a typical tax practice day in season
You open the practice dashboard and the book is sorted by deadline: the returns due this month, what is in progress, and where you left off on Friday.
For each client you review the income picture, employment, rental, investment and business, with the return pre-filled from the connected data sources. You adjust deductions, then validate against the ATO rules before anything is marked ready.
By the middle of the day a batch of returns is prepared, validated and queued for lodgement, and each client has an automatic email with their summary.
In the afternoon you work the quarterly BAS clients. The form pulls the GST data through, you review G1, 1A, G11 and 1B, and validate in batches rather than one client at a time. The dashboard shows the share of this month's lodgement work complete, the practice revenue booked so far, and any new client enquiries that came through your booking page.
How we compare
OneBookPlus vs tax practice software
See how we compare to the tools tax agents typically use.
| Feature | OneBookPlus | MYOB Tax | Xero Tax | LodgeiT |
|---|---|---|---|---|
| BAS preparation & validation | 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 preparation & review | Yes | Yes | Yes | Yes |
| Affordable entry price | Yes | No | No | Yes |
| Price | From $0/mo | Subscription | Contact sales | Subscription |
Built for Australian Tax Compliance
100%
TPB-compliant review and declaration workflow
5 years
Automatic audit log retention
All forms
BAS, CTR, TTR, PTR, IITR, TPAR and FBT prepared and validated
From $29/mo
Tax Practice Suite add-on, sits on any plan
How We Compare
OneBookPlus vs Other Tax Platforms
| Feature | OneBookPlus | LodgeiT | Xero Tax |
|---|---|---|---|
| Multi-client management | |||
| BAS preparation and validation (SBR-ready) | |||
| All tax return types (CTR, TTR, PTR, IITR) | |||
| Bulk preparation and review | , | ||
| Built-in client invoicing | , | , | |
| Bookings & appointments | , | , | |
| CRM & contact management | , | , | |
| Client pipeline from self-preparers | , | , | |
| All-in-one platform (no extra subscriptions) | , | , | |
| Price | From $29/mo add-on | See LodgeiT pricing | See Xero pricing, plus a Xero subscription |
The Network Effect
Get Clients Automatically
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 it, file it through your usual channel, 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.
One day, written by itself, an illustrated day of an Australian tax agent practice run on OneBookPlus
An illustrated day, not real customer data. Scroll through it 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 review invite is queued for the next daily run, and the day closes with the ledger already written.
8:20am
While you're mid-BAS
The first-BAS call you'd have missed.
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
Answered mid-BAS, consult booked.
The AI answers in two rings, books an 11:00 am consult, and emails her a checklist, while you keep working the queue.
In the consult
Her docs and prior-year notes, already open.
Engagement card on screen: her docs, prior-year notes and a pre-filled checklist. Straight to advice, no paper shuffle.
Between appointments
The consult, invoiced without a month-end run.
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
Paid, and your own BAS figure moves.
Card payment lands, the books update themselves, and $80.00 GST is set aside for your own BAS.
Reputation on autopilot
The review ask, once her BAS is lodged.
Once the payment clears, the AI asks for the review at the delay you set. You never have to raise it with a client.
The day closes itself
Eight returns validated, one new client.
You prepared and validated eight returns and won a new client. The book did the rest.
$0
collected
0
admin tasks done by AI
0
evenings lost
An illustrated day, not real customer data. AI Receptionist is a $79/mo add-on that needs AI Companion ($25/mo, included on Growth), and AI Companion is what sends the review invite as well. The rest of the day is the app itself.
Practice pricing
Four plans. All built for tax practices.
Start free, upgrade when the client book justifies it. No per-seat tax, no annual lock-in. Add the Tax Practice Suite app ($29/mo) for the practice side: multi-client management, preparation and validation. Its SBR lodgement pricing (unlimited BAS & TPAR, income-tax returns $2 each after the first 5 free every month) applies once lodgement is switched on, and nothing is charged per lodgement before then.
Free
$0/forever
Onboard your first clients today, no credit card.
- Up to 250 client contacts
- 10 invoices/month
- Client CRM with entity + ABN fields
- Branded booking page for consults
- GST + ABN built-in
- MFA-secured login
Starter
$29/mo
Replaces HubSpot + Calendly + your invoicing tool.
- Everything in Free
- Unlimited invoices & clients
- Stripe online payments + reminders
- Client portal for signed engagements
- Email reminders (BAS due, tax-time prompts)
- Accounting, P&L & BAS reports
- 3 team members (partner + 2 staff)
- 5-year tamper-evident audit log
No card · Drops to Free if you don't upgrade
Plus
$49/mo
Outgrowing the basics, unlimited contacts & bookings, advanced reporting.
- Everything in Starter
- Unlimited contacts & bookings
- Advanced reporting & analytics
- Batch invoicing
- Budget tracking
- 5 team logins
- 10 GB website media storage
Growth
$69/mo
For firms running staff, marketing and the self-preparer pipeline.
- Everything in Plus
- Tax Practice Suite ($29/mo add-on), SBR-ready
- Bulk BAS & IITR preparation workflow
- Client pipeline from self-preparers
- Email campaigns to your client list
- Practice analytics + on-time dashboard
- 10 team members + role-based access
Prices in AUD inc. GST. The Tax Practice Suite app ($29/mo) carries the practice side on any plan. Its SBR / PLS lodgement pricing (unlimited BAS & TPAR, income-tax returns (IITR, CTR, PTR, TTR, FBT) $2 each after the first 5 free every month) applies once direct e-lodgement is switched on. Online card payments carry Stripe processing fees (1.7% + 30¢ AU cards) plus a 2.5% OneBookPlus platform fee. See the full plan comparison
Already on another tool?
Switching from LodgeiT, MYOB Tax, Xero Tax or HandiTax?
Switching is designed to fit 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 prepare tomorrow morning.
- 1Export your client list CSV from LodgeiT, MYOB Tax or Xero Tax (5 min)
- 2Upload via the bulk importer, ABN, entity type and TFN fields auto-map (10 min)
- 3Enter your RAN, SSID and PI-insurance details, connect the ATO via SBR (15 min)
- 4Cancel your old subscriptions tomorrow morning, coffee in hand
Switch from
Built-in AI
Can’t get to the phone? Your AI can.
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.
Extend Your Toolkit
Apps for Tax Agencies
Add invoicing, bookings, and more to run your entire practice from one platform.
Australian Owned
Built in Melbourne, AU
GST Compliant
ATO-ready from day one
Encrypted & Isolated
TLS in transit, AES-256 at rest, tenant isolation at the database layer, read the security page
Free Plan Available
No credit card needed
Frequently Asked Questions
Common questions about OneBookPlus for registered tax agents and BAS agents.
Is OneBookPlus a registered DSP with the ATO?
Not yet. OneBookPlus is in the ATO's Digital Service Provider onboarding programme (DSPPT-49533) and the lodgement features ship after final approval. The connection is built for the Standard Business Reporting (SBR) gateway, using PLS (Practitioner Lodgement Service) for tax agents and direct lodgement for businesses. Direct ATO e-lodgement via SBR is in final ATO certification, prepare and validate BAS and returns today; we'll tell you the moment lodgement goes live on your account.
Is direct ATO lodgement switched on right now?
No. Direct ATO e-lodgement via SBR is in final ATO certification, prepare and validate BAS and returns today; we'll tell you the moment lodgement goes live on your account. Preparation is live today: add clients, prepare and validate BAS and returns, capture the agent declaration and run your whole practice (billable time, tasks, reports, CPD, documents). Until lodgement is switched on for your account you file through your usual channel.
Can BAS agents use this platform?
Absolutely. When setting up your agent profile, select 'Registered BAS Agent'. You can prepare and validate BAS, IAS and TPAR for your clients. Income tax return forms (CTR, TTR, PTR, IITR) stay hidden since they require tax agent registration.
How does client management work?
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 validate any form type for that client, their details are pre-populated.
What is the best software for tax agents in Australia?
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: alongside SBR/PLS-ready preparation and validation (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.
How does the client pipeline work?
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.
Is there a limit on the number of clients?
The Tax Practice Suite is a $29/mo add-on that sits on top of your platform plan, which can be the Free plan, so a solo agent can run at $29/mo all-in (Free covers 10 invoices/month and 250 contacts). A working practice billing lots of clients would typically pair it with the Starter plan ($29/mo) for unlimited invoicing and online payments, $58/mo all-in. Either way the Suite covers unlimited BAS and TPAR lodgement; income-tax returns (IITR, CTR, PTR, TTR, FBT) are $2 each after the first 5 free every month.
What about security and compliance?
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.
What is the Practitioner Lodgement Service (PLS)?
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 prepares and validates BAS, IITR, CTR, TTR, PTR and TPAR for that channel, with your RAN and SSID carried as the registered intermediary. Direct ATO e-lodgement via SBR is in final ATO certification, prepare and validate BAS and returns today; we'll tell you the moment lodgement goes live on your account.
About the author
Bishal Shrestha
Founder & CEO, OneBookPlus
Bishal spent a decade running digital projects for Australian small businesses before founding OneBookPlus. He writes and maintains these pages, and publishes what OneBookPlus does not do alongside what it does.
Read the founder bioHow this page was researched
The compliance and licensing statements above are taken from the bodies this page links to, including Standard Business Reporting, the Tax Practitioners Board and the ATO, so you can read the rule rather than take our word for it. Plan prices come from the OneBookPlus price registry, so the page and the checkout cannot disagree. Everything said about OneBookPlus describes what the product does today, and the page says so where it does not do something.
Explore more
How OneBookPlus Works for Tax Agents
Most independent Australian tax practices run on a stack that never quite agrees with itself. You prep returns in MYOB Tax or Xero Tax, 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 (120 hours over three years for tax agents, 90 for BAS agents, with a 20-hour annual minimum) 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 ($364 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 work through them individually or dozens at once in a bulk batch, built for the SBR gateway with your RAN and SSID carried as the registered intermediary. Direct e-lodgement via SBR is in final ATO certification, so the finished figures are filed through your usual channel until it is switched on for your account. Every edit, login and submission writes to a tamper-evident audit trail kept for the five-year statutory period.
Your Daily Workflow
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 to D15 on an IITR or G1/1A/G11/1B on a BAS, tick the agent declaration, and mark it ready to file. The status lands back against the client 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, and no re-keying into a separate accounting package.
Client Books & Your Own
Each business client's sales and expenses sit in one ledger, so the BAS G-codes are built from the invoices, bills and scanned receipts already on file rather than assembled at quarter-end. Your own practice books run on the same engine: client fee payments match against open invoices, and software subscriptions and PI-insurance premiums are categorised as practice expenses against your chart of accounts. Your own quarterly BAS, covering GST collected on fees, GST credits on purchases and net owing, is prepared in one click, so the agency that lodges for everyone else isn't the one scrambling at the deadline.
Getting Started
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, and ABNs revalidate against the ABR automatically. Enter your RAN, SSID and PI-insurance cover and add the Tax Practice Suite app ($29/month) for the practice side, and you can have your first BAS prepared and validated the same afternoon. Its SBR lodgement pricing (unlimited BAS and TPAR, with income-tax returns $2 each after the first 5 free every month) applies once direct e-lodgement is switched on, and nothing is charged per lodgement before then. Switching from a MYOB Tax plus HubSpot plus Calendly stack is designed to fit in a single evening.
See it with real data
The live demo is a working OneBookPlus account with invoices, quotes and jobs already in it, click around before you decide anything.
A Modern Platform for Modern Tax Agents
Join the next generation of tax professionals. Prepare for all your clients, get new clients through the pipeline, and run your entire practice from one platform.
Get started freeReviewed by Bishal Shrestha
Authoritative sources
Where the regulatory facts on this page come from
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.
- Tax Practitioners Board (TPB), registers and regulates Australian tax agents, BAS agents, and tax (financial) advisers. Sets the Code of Professional Conduct, CPD requirements, and PI insurance minimums.
- ATO Practitioner Lodgement Service (PLS), the gateway agents use to lodge tax returns, BAS, and amendments on behalf of clients via SBR-enabled software.
- Standard Business Reporting (SBR), the electronic-lodgement framework. SBR-enabled software is the only path for PLS-based agent lodgement.
- ATO Digital Service Provider (DSP) register, list of approved software vendors. OneBookPlus is in the DSPPT-49533 onboarding programme; lodgement features ship after final approval.
- ATO Business Activity Statements, quarterly BAS lodgement schedule, deadlines, FTL penalties ($364 per 28-day period for small entities from 1 July 2026, capped at 5 periods).
- Fair Work Australia, modern award classifications, minimum wage, and employer obligations relevant to practice payroll.
From the blog
Related reading for tax agents
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