Bookkeeping for a startup is not just smaller-scale bookkeeping for a mature business. The entity structures are different, the funding mechanisms are different, and the ATO obligations — particularly around R&D and employee equity — require record-keeping that most general-purpose bookkeepers have never set up before.
If you are taking on your first startup client, or if you have a startup client whose books are already a mess, this guide covers the foundations that need to be right from the beginning.
The company structure and share capital account
Most Australian startups incorporate as companies — PTY LTD — rather than as trusts or sole traders. The share capital account is a critical distinction from the moment the company is formed.
Share capital is not income and not equity from trading. When founders receive shares at incorporation, or when investors subscribe for shares in a capital raise, the proceeds go to a Share Capital account on the balance sheet — not to revenue, not to retained earnings.
Common early mistakes:
- Treating a capital raise as income — deposits into the bank account from investors can look like ordinary receipts. They must be credited to Share Capital (and the relevant liability or equity account depending on the instrument).
- No distinction between share classes — if the company has ordinary shares and preference shares, maintain separate accounts for each class. This becomes critical when preference shareholders have liquidation preferences.
- Founders' shares at near-zero consideration — founders often receive shares for minimal consideration at incorporation. This is legitimate and common. Record it correctly: debit Share Subscription Receivable (or Cash) for the actual consideration paid, credit Share Capital for the same amount. The "value" is not the same as the initial consideration.
R&D tax incentive: record-keeping from day one
The Australian R&D Tax Incentive (R&DTI) provides a tax offset — 43.5% refundable for small companies with turnover below $20 million. It is one of the most valuable concessions available to early-stage Australian tech companies.
But the ATO requires contemporaneous evidence. You cannot reconstruct an R&D claim from memory or aggregated expense codes at year-end.
What records must be kept
For each R&D activity, the company must maintain:
- A description of the core R&D activities and their experimental hypothesis
- A record of personnel time spent on R&D activities (not just cost — actual time)
- Direct expense records: contractor invoices, materials, software subscriptions used for R&D, cloud compute costs
- Overhead allocation methodology (if overhead is included in the claim)
Bookkeeping structure for R&D
Set up a dedicated project code or cost centre for R&D activities. Every invoice, payroll allocation, and overhead charge that relates to R&D should be coded to this centre. This is what the R&D consultant (and the ATO on review) will need to reconstruct the claim.
Do not mix R&D expenses with general operating expenses. A developer's salary split 60% R&D / 40% general engineering requires a documented methodology for the split — time tracking, project allocation, or a consistent percentage with written justification.
GST note: R&D expenses generally follow normal GST rules. Claim ITCs on R&D-related purchases where applicable. The R&DTI offset is separate from GST treatment.
Convertible notes
Convertible notes are debt instruments that convert to equity at a future funding round (or on other defined trigger events). They are extremely common in early Australian startup fundraising.
How to record a convertible note
At issuance:
- Debit: Bank (proceeds received)
- Credit: Convertible Note Payable (liability)
The note is a liability until it converts or is repaid. It is not equity until conversion occurs.
Interest accrues on the note (typically 8–12% per annum under Australian standard terms):
- Debit: Interest Expense
- Credit: Accrued Interest (liability)
Interest on convertible notes is INP (input-taxed) — no GST applies.
At conversion
When the note converts to equity (typically at the next priced round):
- Debit: Convertible Note Payable (principal)
- Debit: Accrued Interest
- Credit: Share Capital (for the total amount converted)
The conversion discount and valuation cap mechanics are handled in the shareholder register and cap table — the bookkeeper's role is to ensure the dollar amounts transferred to Share Capital are correct.
SAFE notes (Simple Agreement for Future Equity)
A SAFE (Simple Agreement for Future Equity) is not a loan and not equity — it is an agreement by the company to issue shares at a future date when specific trigger events occur (usually a priced funding round).
Recording SAFEs:
At issuance, the SAFE proceeds are typically recorded as:
- Debit: Bank
- Credit: SAFE Liability (or SAFE — Mezzanine Equity, depending on treatment)
There is ongoing debate in Australian accounting practice about whether a SAFE is a financial liability or equity. The treatment depends on the specific terms of the instrument, whether it has an unconditional obligation to deliver cash (most SAFEs do not), and whether the entity applies AASB 9 or AASB 132 strictly.
Practical advice: Do not code SAFE proceeds as ordinary revenue. Flag the SAFE agreement to the accountant at the time of issuance and get direction on the correct balance sheet classification before recording anything. Getting this wrong creates compounding errors when the SAFE converts.
Employee Share Schemes (ESS)
Australian employee share schemes are governed by Subdivision 83A of the ITAA 1997, with complex concessions that affect when employees pay tax on their equity. The bookkeeper's practical obligations are:
ESS interests and PAYG withholding
Under the start-up ESS concessions (available to companies with less than 10 years of operation, turnover under $50 million, and shares not listed on an exchange), employees can receive options or shares at a discount without paying tax at the time of grant. Tax is deferred until the earliest of sale, employment ceasing, or 15 years.
For startups using the concessions, there is no PAYG withholding obligation at the time of grant. The bookkeeper does not need to withhold or remit tax on concession-eligible ESS interests.
For schemes that do not qualify for the start-up concessions, the discount is included in the employee's assessable income at the grant date and is subject to PAYG withholding as if it were salary.
ESS annual reporting obligation
The company has an annual reporting obligation to the ATO: the ESS Annual Report is due on 14 August each year and reports the details of ESS interests issued during the prior financial year. Missing this is a common mistake for first-time startup clients.
Bookkeeping support: Maintain a register of ESS interests issued — employee name, grant date, number of shares/options, exercise price, and whether the start-up concessions applied. This is the source data for the ESS Annual Report.
ATO obligations from day one
The moment a startup employs its first person — even if that person is just a founder on payroll — ATO obligations start:
- Register for PAYG withholding before the first payroll run. Do not wait until after the first payment has been made.
- Single Touch Payroll — all employers must report payroll events to the ATO in real time via STP. Set up an STP-enabled payroll system before the first payroll, not after.
- Superannuation — the Superannuation Guarantee requires contributions for all eligible employees. The SG rate for 2026–27 is 11.5%. Payments must reach the employee's super fund by the quarterly due dates (28 July, 28 October, 28 January, 28 April). Late SG payments require an SGC (Superannuation Guarantee Charge) statement — a painful and costly obligation.
- GST registration — optional below $75,000 turnover but often worth registering from day one if the startup has significant R&D expenses or capital expenditure on which it wants to claim ITCs. A startup burning $300,000 per year on R&D is leaving meaningful ITCs on the table if it is not GST-registered.
Setting up the chart of accounts
A startup's chart of accounts needs accounts that a standard small business does not require:
- Share Capital — Ordinary and Share Capital — Preference (separate accounts per class)
- SAFE Liability (or classification as directed by accountant)
- Convertible Note Payable
- Accrued Interest — Convertible Notes
- R&D Expense (separate from general operating expenses)
- ESS Expense (if the scheme is not concession-eligible and discount is recognised as an expense)
- Option Reserve (equity component for options with an accounting fair value)
Building these accounts in at the start costs 15 minutes. Reconstructing them from undifferentiated accounts at tax time costs days.
Startup bookkeeping is more complex than it looks from the outside. The entity structures, the funding instruments, and the ATO reporting obligations are all different from a mature trading business. Getting the foundations right in the first year — particularly the R&D expense tracking, the equity instruments, and the STP and super registrations — pays dividends for the entire life of the company.
This article was last reviewed on 19 November 2026. R&D incentive rates, ESS concession thresholds, and ATO registration requirements are updated regularly. Always confirm current rules at ato.gov.au. This is general guidance, not specific tax or legal advice.