Profit First for Tradies: Does It Actually Work in Australia? (2026)
Most Australian tradies run their finances like this: money comes in, bills go out, what's left at the end of the month is the profit. Profit First flips that. You take the profit first — non-negotiable, off the table — and run the business on what's left. The genius is that it's not a mindset shift, it's a structural change. Here's how it works and how to adapt it for Australian GST and BAS obligations.
By Benjy @ Tradie Scaler
Does Profit First Work for Australian Tradies?
How Profit First Works
Traditional business finance equation: Revenue − Expenses = Profit. In practice, this means profit is whatever's left after you've paid everything else. Which means profit is often whatever's left over — which is often not much, or nothing, or a negative number.
Profit First reverses it: Revenue − Profit = Expenses. You transfer a percentage to your profit account the moment revenue arrives. That money is gone — it doesn't exist for expenses. The business then has to operate on what remains. This forces efficiency without requiring willpower, because the constraint is structural, not psychological.
The reason this works for tradies specifically: most trade businesses don't fail because they're not busy enough. They fail because they're busy but not profitable — revenue is high, hours are long, and the owner can't explain where the money went. Profit First creates visibility and separation that makes the financial health of the business impossible to ignore.
The Profit First system uses multiple bank accounts to create separation. For Australian tradies, the recommended setup is:
Bi-weekly allocation cadence: on the 10th and 25th of each month, transfer everything from the income account across the other accounts using your target percentages. This regular rhythm replaces the anxious "how much have I got?" check with a systematic process.
The Australian-Specific Adjustments You Must Make
Mike Michalowicz wrote Profit First for the US market — no GST. The Australian adaptation is straightforward but non-negotiable: you must strip GST before calculating your profit allocations.
The correct sequence: client pays you $1,100 (including $100 GST) → immediately transfer $100 to GST account → the remaining $1,000 is your real revenue → apply your profit allocations to the $1,000. If you apply percentages to the GST-inclusive amount, your allocations will be overstated and you'll regularly be short at BAS time.
The practical tip: most tradies on Xero can automate the GST account transfer using bank rules — when revenue hits the income account, a rule automatically identifies the GST component and moves it. Talk to your bookkeeper about setting this up.
Australian tradies running payroll need to account for PAYG withholding — the tax held back from employee wages. This flows through your payroll software (Xero Payroll, Employment Hero) but the funds need to be available in the tax account when due. Ensure your tax account allocation covers both your own income tax provision and the PAYG withholding obligations.
BAS is quarterly in most cases — the GST account should be building up over the quarter and the full amount should be there when BAS is due. If you're regularly short at BAS, your GST allocation percentage is wrong — double-check you're using 1/11th of GST-inclusive revenue (not 10%).
Most Australian trade businesses starting Profit First will be nowhere near the "target" percentages. That's fine — the system is designed for gradual implementation. Here's a realistic starting point for a small-to-medium trade business:
Move 1–2% from operating expenses to profit every quarter. The discomfort of reduced operating budget is the point — it forces smarter spending decisions. Every quarter you'll find one subscription you didn't need, one supplier where you can negotiate better terms, one hire that wasn't necessary yet.
Profit First works best when paired with clear accounting software.
Xero gives you the real-time visibility to track allocations, see where money is going, and reconcile your bank accounts across multiple Profit First accounts. Most bookkeepers who implement Profit First for tradies use Xero as the accounting backbone.
Xero vs MYOB for Tradies — Compare Now →Frequently Asked Questions
Profit First is a cash management system developed by Mike Michalowicz. Instead of Revenue − Expenses = Profit, it reverses the equation: Revenue − Profit = Expenses. You allocate a percentage to profit first (as a non-negotiable transfer to a separate account), then allocate owner pay, operating expenses, and tax. The system forces the business to operate on what's left, creating financial discipline through bank account separation rather than willpower.
The Australian adaptation requires a dedicated GST account. When revenue comes in, immediately transfer the GST component (1/11th of GST-inclusive revenue) to the GST account. The remaining revenue is then allocated across profit, owner pay, operating expenses, and tax accounts. This ensures GST is never spent and is always available for BAS lodgement. Not handling GST separately is the most common mistake Australian tradies make with Profit First.
Minimum accounts needed: (1) Income — all revenue lands here, (2) GST — 1/11th of revenue, (3) Profit — your profit allocation, (4) Owner Pay — your regular wage, (5) Tax — income tax provision including PAYG, (6) Operating Expenses — bills paid from here. Some tradies combine profit and owner pay initially, but separate accounts provide better visibility and discipline.
Starting allocations for a typical Australian trade business: Profit 1–2%, Owner Pay 30–35%, Tax 15%, Operating Expenses 50–54%. Target allocations for a mature business: Profit 5–10%, Owner Pay 50%, Tax 15%, Operating Expenses 30%. Move 1–2% from operating expenses to profit each quarter. Progress is the goal — not perfection from day one.