Income, Tax and Borrowing Power: A Business Owner’s Balancing Act

As a business owner, you’re told to keep taxable income low to save tax. But when you want a home or investment loan, the bank wants to see strong, stable income. Those two goals can clash hard.

For most self‑employed investors, the answer is not “pay more tax forever”. It’s deliberately planning 2–3 years where your taxable income is higher and cleaner so lenders are comfortable, while still using structures, gearing and dividends smartly in the background.

In this guide, we’ll unpack how taxable income, business structure, gearing and the new negative gearing rules really interact — and what you can do this year to protect both your business and your borrowing power.

Business owners need to balance tax efficiency with lender‑friendly income.

1. The core trade‑off: low tax vs borrowing power

How lenders actually see your income

For employees, lenders just grab the last few payslips. For you as a business owner, they usually:

1. Take the last two years of tax returns and financials.
2. Average them – and often use the lower year if income dropped (Fact 19).
3. Add back certain expenses (like extra super, non‑recurring costs) if well documented.
4. Apply their own shading (e.g. discounting overtime, bonuses, some dividends).

This means:

• If you’ve had one low‑tax year, that can drag down borrowing power for at least two years.
• Aggressive deductions that were great for tax can make income look unstable or too weak for a lender.

We walk through this income translation step‑by‑step in /insights/bronte-borrowing-power-small-business-owner-guide.

Why “low taxable income” is weaker after the 2027 reforms

Until recently, some investors could afford to run very low taxable income because big negative gearing refunds and rising property prices did a lot of heavy lifting.

The 2026–27 Federal Budget and the Tax Reform Bill from 1 July 2027 change that:

• Rental losses on established properties bought after 12 May 2026 are largely quarantined, so you can’t offset them against wages or business income in the same way (Fact 12; see /insights/new-negative-gearing-rules-borrowing-power-serviceability-lvr).
• Capital gains tax becomes heavier and more complex.

Low‑tax strategies that relied on negative gearing refunds are now materially weaker, especially if your income already looks thin to a lender.

The principle to work with

For most business owners, the sustainable sweet spot is:

Taxable income high enough to pass bank tests, but not so high you’re wasting tax capacity.

That usually means planning your income in bands, not at the absolute minimum.

2. How banks turn your business into “income”

Typical self‑employed assessment steps

Every lender has its own rules, but a common approach is:

1. Start with taxable business profit (from company, trust or sole trader accounts).
2. Add your wages/salary from the business.
3. Add dividends or distributions (sometimes shaded or averaged).
4. Add back allowable expenses (e.g. once‑off legal fees, extra super, non‑cash items like depreciation in some policies).
5. Average two years, or take the lower.

So your tax return becomes the base reality. You can’t just tell the bank “the business is better than it looks”.

We go deeper into this mechanics in /insights/balancing-business-income-dividends-negative-gearing-after-budget.

Worked example: same business, two tax strategies

Assume:

• Business genuinely makes $280,000 profit before the owner’s wage.
• Owner’s household spending and other debts are the same in both scenarios.
• We ignore other complexities to keep this simple.

Same business. Same real cashflow. Very different taxable income and borrowing power.

In Scenario B, you probably pay more personal tax, but you may unlock hundreds of thousands more in borrowing capacity. That can matter far more than the extra tax in the long run if you’re building a portfolio.

The APRA buffer and why it bites harder

Under APRA rules, lenders test whether you could afford a loan if interest rates were 3% higher than today’s rate. That buffer:

• Shrinks borrowing power as rates rise.
• Hurts more if your taxable income looks thin or volatile.

If you’re targeting a $1.2m home loan, your repayments at 6.5% might be ~$7,600/month P&I over 30 years. But the bank has to test you at 9.5%+, closer to $10,000/month.

That test is easier to pass when your last two tax returns show solid, stable income.

Lenders usually average two years of income and may use the lower year.

3. Structuring income: salary, dividends and drawings

Why stable salary beats lumpy dividends

From a lender’s perspective, a higher, consistent salary for 2–3 years is usually better than a mix of low wages and unpredictable dividends (Fact 7).

• Salary reads as reliable, recurring income.
• Large, irregular dividends can be discounted or averaged over multiple years.
• Trust distributions can be tricky, especially under the new trust tax rules in the 2026–27 Budget.

Where possible, aim to:

• Set a target salary that supports planned borrowing.
• Keep that salary consistent, not jumping from $60k to $220k and back.

Practical income banding

A simple framework to explore with your accountant and broker:

1. Baseline band – the minimum level that keeps your personal life and basic borrowing capacity intact (e.g. $110k).
2. Accumulate band – where you sit in years you’re preparing to invest or refinance (e.g. $180k–$220k for 2–3 years).
3. Harvest band – later in life when debt is lower and you can shift back towards more tax efficiency.

You don’t need to sit at the top band forever. But 1–2 years of low taxable income can cost you 2–3 years of borrowing power, because of how lenders average.

Company vs trust structures

Common patterns:

• Company (Pty Ltd)

  • Lender cares mainly about your salary + dividends, and sometimes the company’s retained profits.
  • Strong retained profits can help, but not as much as a clear, stable income stream to you.

• Discretionary trust

  • Lender looks at distributions and underlying trust income.
  • After the 2027 reforms and trust distribution crackdowns, aggressive streaming to low‑tax family members can weaken your income profile.

The key is to make sure your personal assessable income line looks healthy enough for the bank, even if some profit stays in the structure.