Outsourced Finance for Solar Installers in Australia: Five Revenue Streams, Done Right

Solar revenue, separated properly

Commercial and residential solar installers run a more complex P&L than they often realise. Install revenue, STC monetisation, ACCU income, O&M recurring revenue, warranty-claim accruals — five streams, five recognition triggers, three different GST treatments. We separate them in the chart of accounts so the monthly close reflects what each line of the business is actually doing.

Why install + STC + ACCU + O&M + warranty need to live on different lines

1. Install revenue. Recognised at system energisation and handover under AASB 15. Standard GST.

2. STC monetisation. Recognised at certificate creation on the REC Registry, treated as an intangible asset under AASB 138. GST-free under Subdivision 38-N.

3. ACCU income. Recognised at issue and ANREU credit, not at application or sale. Intangible asset under AASB 138, cost-model basis. GST-free under TR 2015/2.

4. O&M recurring revenue. Recognised over the service period under AASB 15. Standard GST.

5. Warranty-claim accruals. Provided for under AASB 137 when probable and reliably measurable. Counter-revenue, not COGS.

Why most CPA practices won't touch carbon-credit accounting

The standards are technical, the GST and tax positions are contested, and the ANREU registry workflow takes time to understand. Most practices stay clear of it.

We don't. ACCU recognition under AASB 138, monthly ANREU registry reconciliation, defensible audit position, ordinary-income tax treatment (not capital).

Which tier is right for a solar installer

Volume drives tier.

• Sub-$5M installers usually fit Finance Manager — from $2,750/mo

• $5M-$25M installers typically fit Financial Controller (where ACCU volumes are material) — from $4,950/mo

• Vertically-integrated players with generation + install + ACCU monetisation streams usually move to Head of Finance for the strategic finance leadership and capital-raise readiness — from $8,500/mo

Related reading

• ACCU & Carbon Credit Accounting in Australia — the practitioner's guide

• ACCU Recognition Timing Under AASB 138 — three timing mistakes that cost solar businesses $50k+

• ANREU Registry Reconciliation — the monthly process

• EPC Accounting in Australia — for solar installers with commercial EPC scope

• Finance Function Maturity Audit — 12 questions, 5 minutes

Carbon credits on your books?

Our deeper guide — "ACCU & Carbon Credit Accounting in Australia — the practitioner's guide

Book a 30-min discovery call — email rami@techedgeaccounting.com.au or use the booking link on the homepage.

Published 26 May 2026 by Rami Rajkumar, CPA. TechEdge Finance Office — outsourced finance department for AU residential, commercial and vertically-integrated solar operators. CPA-led, Hawthorn VIC, Australia-wide.