Fitness businesses have a bookkeeping profile that combines high transaction volume, multiple revenue streams, complex payroll arrangements, and a consistent temptation to misclassify income and expenses. A gym with 500 members, a PT studio, a supplement retail counter, and a mix of employees and contractors will test any bookkeeper who assumes the work is just bank reconciliation and quarterly BAS.
GST on Memberships and Personal Training
Gym memberships and personal training sessions are taxable supplies. GST at 10% applies to membership fees, casual entry fees, group fitness class fees, and one-on-one personal training sessions. There is no exemption for general fitness services — the supply is taxable regardless of whether the client has a general practitioner's referral or not.
The narrow exception worth understanding (and not overapplying) is where fitness services are provided as part of a health fund benefit managed under a recognised private health insurance arrangement, or where an allied health professional delivers exercise physiology services that qualify as GST-free health services under item 1.1 of Schedule 1 to the GST Act. An exercise physiologist providing services to patients referred by a GP under a chronic disease management plan may qualify as a GST-free medical service. A personal trainer running general group fitness classes does not qualify, regardless of how the marketing frames the health benefits.
In practice, most gym and studio revenue is fully taxable. If the business has any allied health practitioners operating out of its facility, get a clear determination on the GST status of those specific services before assuming they follow the general gym tax treatment. Miscoding GST-free health services as taxable (or the reverse) creates BAS errors that compound across every quarter.
Deferred Revenue for Annual Memberships
When a member pays $1,200 upfront for a 12-month membership in January, the correct accounting treatment under AASB 15 is to recognise $100 of revenue per month over the membership term — not $1,200 in January.
The upfront receipt is initially a liability (deferred revenue or unearned income):
Dr Bank 1,200
Cr Deferred Revenue (GST excl.) 1,090.91
Cr GST Liability 109.09
Each month, $100 of deferred revenue is recognised as income:
Dr Deferred Revenue 100.00
Cr Revenue — Memberships 100.00
The GST was remitted at the time of receipt (for a cash-basis entity) or when the tax point was created (for accruals). Revenue recognition is independent of the GST treatment — the GST is remitted in the quarter the payment was received, but the revenue is spread across 12 months.
At year end, the balance in deferred revenue represents prepaid memberships not yet earned. This is a current liability on the balance sheet. Gyms that skip this step and treat all membership receipts as immediate income will overstate profit in periods of strong sales and understate it during member churn — which distorts management decisions about capacity, pricing, and staffing.
For month-to-month memberships billed by direct debit, there is generally no deferred revenue issue — the billing cycle matches the service period. The complexity arises with annual or multi-month prepaid arrangements, corporate wellness packages, and gift memberships.
POS Reconciliation Across Multiple Revenue Streams
Most gyms run at least three separate revenue streams through a single point-of-sale or member management system: memberships/access fees, personal training or class bookings, and retail (supplements, merchandise, branded apparel). Some studios also sell gift vouchers and run events.
Each stream should be coded to a separate income account. This matters not just for management reporting but for GST accuracy — if the business ever introduces a supply that is input-taxed or GST-free (e.g., a registered allied health service), mixing it with fully taxable revenue makes the ITC apportionment calculation significantly harder.
Daily POS reconciliation should compare:
- Cash receipts per the POS system vs cash deposited per the bank statement.
- Card transactions per the POS vs card settlement deposits from the payment gateway (Stripe, Square, Tyro, or similar). Card settlements typically lag by one business day and are net of merchant fees — do not code the net deposit as revenue. Code gross revenue to revenue accounts and the merchant fee to a bank charge or merchant fee expense account.
- Direct debit receipts (membership billing runs) per the member management system vs amounts cleared through the business bank account.
Discrepancies between POS and bank often arise from failed direct debits, chargebacks, or gift voucher redemptions that were not correctly coded at point of redemption. A gym with 500 members running fortnightly direct debits might have 5-15 failures per run — those failures need to be tracked as outstanding debts (or cancelled memberships, depending on the system's workflow), not simply ignored until the member complains.
Equipment Depreciation
Gym equipment — treadmills, weights, cable machines, reformers, rowing machines — is a capital asset subject to depreciation. The ATO's tax ruling TR 2024/1 (the effective life ruling, updated annually) sets the effective life for gymnasium equipment at 5 years under the diminishing value method or 7 years under the prime cost method. Note that effective life is reviewed periodically by the ATO — confirm the current ruling at the time of acquisition.
For small businesses eligible to use the simplified depreciation rules (aggregated turnover under $10 million), assets above the instant asset write-off threshold enter the general small business pool and are depreciated at 30% diminishing value (15% in the first year). Assets below the threshold are immediately deductible in the year of first use.
For larger fitness businesses (turnover above $10 million), standard AASB 116 depreciation applies using the cost model (or revaluation model if elected). A large gym chain that replaces treadmill belts every 3 years might componentise its treadmill assets — separating the frame (longer life) from the belt and motor components (shorter life). Componentisation requires the asset register to track sub-components separately, but it produces a more accurate depreciation charge and avoids over-depreciation on the long-life frame.
GST on equipment purchases: full ITC available in the BAS period the invoice is received (accruals) or paid (cash basis), provided the purchase is for business use. If the equipment is used partly for private purposes — unlikely in a commercial gym, but relevant for a home-based personal trainer — the ITC must be apportioned.
Casual Instructor Payroll vs Contractor Engagement
This is where gyms get into genuine compliance risk. The distinction between an employee and an independent contractor is determined by the totality of the relationship, not by the label on the contract or the fact that the instructor has an ABN.
Under the ATO's multi-factor test, a casual fitness instructor who:
- Works hours set by the gym's timetable,
- Uses the gym's equipment and facilities,
- Cannot subcontract their classes to another instructor without approval,
- Is paid per class at a rate set by the gym, and
- Does not invoice multiple clients in the same kind of work,
is likely an employee for payroll tax, superannuation, and workers' compensation purposes — regardless of whether they hold an ABN and submit invoices.
The consequences of misclassification are serious: unpaid superannuation (SGC contributions plus administration fee and nominal interest), PAYG withholding liability, payroll tax in states where the threshold is exceeded, and WorkCover premium shortfalls.
The practical bookkeeping action: for every instructor engaged on a regular ongoing basis, obtain a copy of the instructor's ABN registration, confirm they have their own clients outside this gym, and check that they genuinely operate their own business. If they work exclusively for one gym, meet with the gym owner and the tax agent before coding those invoices as contractor expenses.
For genuine contractors — a visiting specialist instructor hired for a weekend workshop who runs their own business with multiple clients — the arrangement is simpler. Code the invoice to contractor labour, no PAYG, no super obligation. TPAR does not apply to fitness businesses (TPAR is limited to building/construction, cleaning, courier, IT, and security industries), so no annual TPAR reporting is required for fitness instructor payments.
Direct Debit Failures and Membership Cancellations
Direct debit failures are a regular feature of gym operations. When a member's payment fails, the member management system typically retries the debit (often after 3-5 business days) and may apply a dishonour fee.
From a bookkeeping perspective: the failed debit creates a debtor on the member's ledger. The gym has provided access to its facilities for the period covered by the failed payment and is owed the fee. Code the receivable at the time the service is provided, not at the time of collection. If the retry succeeds, match the receipt against the debtor. If the member ultimately cancels without paying, write off the outstanding balance to bad debts.
Membership cancellation credits (where a member has paid upfront and cancels partway through) create a liability — the unearned portion of the prepaid fee is refundable. Credit the deferred revenue account for the unearned period and, if a refund is made, debit deferred revenue and credit bank. If the membership contract includes a cancellation fee that offsets the refund, recognise the cancellation fee as income in the period of cancellation.