The Equity Engine, Charter Finance

From property to portfolio

Your home loan is the engine, not the obstacle.

Two numbers in. See how disciplined extra repayments, equity release, and debt recycling can turn one home loan into a property portfolio over 25 years. Built for property investors, owner-occupiers, and anyone weighing their next move.

Charter Finance is a mortgage advisory firm. Every figure here is grounded in mortgage maths, not generic compounding. As part of our Financial Wholeness Journey™, we help clients structure their lending so cashflow turns into equity, and equity funds the next decision.

Run the numbers, your story

Better numbers. Better decisions. The maths on your own future.

Adjust the inputs to match your situation. The calculation runs the same debt-recycling model used in the story above. Numbers update live.

The Equity Engine

Run your own numbers.

Home loan owing

Home value

Rate (% pa)

Term (years)

Extra per month (AUD)

Property growth (% pa)

Investment property cost

Default reflects a typical Australian metro investment property.

Marginal tax rate (% incl. Medicare)

37% income + 2% Medicare. Adjust to your bracket.

Net portfolio at year 25 $0

Home equity plus investment property equity

Non-deductible debt $0

Original home loan (Split A)

Deductible debt $0

Equity-release splits + IP loans

Investment properties 0

Bought when equity allows

Annual tax deduction $0

Deductible interest, multiplied by your marginal rate

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Why the home loan is the lever, not the obstacle.

Most owner-occupiers treat the mortgage as a 30-year sentence. We treat it as the engine. Every extra repayment converts cashflow into equity. Equity is what funds the next property. The investment portfolio is a downstream consequence of how the home loan was structured in the first place.

Extra repayments shrink non-deductible debt fastest.

Released equity becomes new deductible debt at each purchase.

Investment loans run interest-only while you still owe on your home, then switch to principal and interest.

Two engines compound: home equity, plus investment equity.

This calculator illustrates a debt-recycling strategy. Whether this strategy is appropriate for you depends on your tax position, lender policy, your investment goals, your borrowing capacity, and other factors not modelled here. Charter Finance is not a tax adviser. Speak to a qualified accountant or wealth planner before implementing. General information only.

Key assumptions in this model

Usable equity: capped at 80% of your home value, minus your home loan balance.
Investment property purchase trigger: when usable equity is at least 25% of the current investment property price (no cap on number).
Stamp duty: flat 5% national average on each investment purchase.
Other purchase costs: not modelled (legals, inspections, loan setup).
Investment property loan: 80% of the property price at the time of purchase.
Equity release: drawn as a new tax-deductible loan split against your home, equal to the deposit plus stamp duty.
Investment loan repayments: interest-only while your non-deductible home loan (Split A) still has a balance. Once Split A is paid off, all investment splits and IP loans switch to principal and interest, reset to a fresh 30-year term.
Extra repayments: directed to your non-deductible split (Split A) only, until paid off.
Property growth: applied equally to your home and to investment properties.
Rent and holding costs: not modelled.
Tax effect: indicative only. Calculated as deductible interest, multiplied by your nominated marginal rate. Subject to current Australian tax law; speak to a qualified accountant before relying on this figure.
Capital gains tax, land tax, lender's mortgage insurance: not modelled.
Borrowing capacity: not assessed. Real lender approval depends on income, expenses, existing debt, and policy.