Should You Use Home Equity to Renovate or Buy an Investment?

Using equity for renovations is usually best when your home is under‑improved for the area and lifestyle is your priority. Using equity to buy another property usually makes more sense when your current home already works, your cashflow is strong and you want long‑term wealth growth. The right decision comes from comparing risk, cashflow and tax outcomes for both options side‑by‑side.

In Australia, you generally release equity either by topping up your home loan, refinancing with cash‑out, or moving to a construction loan. Lenders will usually cap total lending at around 80% of your property value without lenders mortgage insurance (LMI), and they’ll apply a 3% serviceability buffer (APRA) to test repayments at a higher rate.

Usable equity is usually capped by an 80% loan-to-value ratio rather than your full equity.

Step 1: Work out how much equity you can safely use

How usable equity is calculated

Usable equity is not your full equity. A common rule is:

Usable equity ≈ 80% of your property value − your current loan balance.

This is consistent with how we approach equity across our investment content (see /insights/rose-bay-equity-investments-family-safety-buffers).

Example
Home value: $1,500,000
Current loan: $700,000
Target LVR: 80% → $1,500,000 × 80% = $1,200,000
Usable equity ≈ $1,200,000 − $700,000 = $500,000

You could borrow up to another $500,000 without paying LMI. The safer question is how much of that you can service comfortably after the APRA buffer and higher RBA cash rates.

One pool of equity, two very different uses

You’re essentially deciding how to allocate that $500,000 (in this example) between:

1. Improving your existing home via renovations or rebuild; or
2. Funding a deposit and costs for another property (often an investment).

We almost always recommend separate loan splits for each purpose to protect tax deductibility and flexibility, consistent with our investment playbook at /insights/using-equity-fund-next-investment-property-playbook.

Step 2: Renovate vs buy – side‑by‑side comparison

High‑level pros and cons

Worked cashflow example

Let’s reuse the earlier usable equity example and compare two scenarios with an extra $400,000 borrowed.

Assume:

• New borrowing: $400,000
• Interest rate: 6.5% p.a.
• Term: 30 years, P&I on home, IO on investment split

Scenario A – $400k renovation
Full $400,000 added to home loan at 6.5% P&I.

Approximate repayment: about $2,528 per month (using a standard 30‑year P&I formula).
There’s no rental income to offset this. All repayments are after‑tax.

Scenario B – $400k used as 20% deposit for $2m investment purchase

• $400,000 equity split (interest‑only)
• New $1.6m investment loan at 6.5% IO

Approximate repayments:

• Equity split (IO at 6.5%): ≈ $2,167 per month
• Investment loan (IO at 6.5%): ≈ $8,667 per month
• Total additional repayments: ≈ $10,834 per month

Indicative rent: say $1,600 per week = ~$6,933 per month.
Net cash shortfall (before tax): ≈ $3,900 per month.

Under current rules, much of this shortfall could be tax‑deductible via negative gearing. But with Budget 2026–27 reforms limiting negative gearing on many established properties from 1 July 2027, you should stress‑test on the basis of little or no negative gearing benefit (see /insights/worked-examples-after-tax-cashflow-investment-loans-before-after-reforms).

Step 3: When renovating is usually the better call

Signs your equity is better spent on your home

Renovation or rebuild often wins when:

• Your home is physically or functionally behind comparable local properties (e.g. 2‑bed, 1‑bath in a 4‑bed, 3‑bath street).
• You plan to stay put 5–10+ years, so you’ll actually enjoy the changes.
• School zones, commute and community are already ideal.
• Your borrowing capacity is tight and you can’t comfortably service an extra investment loan.

In Sydney’s East, for example, lifting a solid home up to local standard can be a safer play than stretching for another property. Our renovation‑focused guides at /insights/equity-release-renovations-extensions-rebuilds-eastern-suburbs and /insights/using-home-equity-major-renovation-eastern-suburbs-without-overstretching step through how to size and structure those projects.

Renovation funding options

You’ll typically choose between:

• Simple top‑up: Best for smaller, staged works (e.g. kitchen, bathrooms) up to ~10–20% of property value.
• Refinance with cash‑out: When your current lender won’t release enough equity or rates/terms elsewhere are better.
• Construction loan: For major structural works or knockdown‑rebuilds, with progress draws and builder contracts. See /insights/financing-rose-bay-renovations-extensions-rebuilds for detail.

Key safeguards:

1. Cap total LVR at 80% where possible.
2. Keep at least 3–6 months of total repayments in offset as a buffer.
3. Demand fixed‑price or very tight contracts and contingencies for cost overruns.

Comparing lifestyle, cashflow and risk helps decide between renovating and investing.

Step 4: When buying another property is usually better

When an investment purchase tends to win

Using equity to buy another property often suits when:

• Your current home already fits your 5+ year lifestyle.
• Household income is stable, with strong surplus after all expenses.
• You’re comfortable with investment risk and accept that property can go sideways for years.
• You want to build a portfolio and are prepared for extra admin and changing tax rules.

A practical structure is:

1. A separate, interest‑only equity split on your home for deposit and costs.
2. A standalone investment loan secured only by the new property, avoiding cross‑collateralisation (as outlined at /insights/using-equity-fund-next-investment-property-playbook).

This keeps purposes clean and makes future refinancing or selling a single property much easier.

Watch the new tax and policy landscape

With the 2026–27 Budget changes, negative gearing will largely be restricted to new builds from 1 July 2027, and rental losses on many established properties bought after 12 May 2026 won’t be deductible against wages.

That means:

• You should test any new investment on the basis of no negative gearing benefit.
• New builds may become relatively more attractive than established homes for some investors.
• Record‑keeping and loan tracing will matter more than ever; mixed‑purpose loans are a trap.

For business owners, another property isn’t your only option. Sometimes it’s better to use equity to support your business through separate, clearly labelled splits, as covered in /insights/using-investment-property-equity-support-small-business and /insights/balancing-business-expansion-and-investment-property-purchases.

Step 5: A decision framework you can use this week

1. Clarify your 5–10 year priorities

Rank these from 1–5:

• Improving day‑to‑day lifestyle in your current home
• Getting kids into/keeping them in preferred school zones
• Growing long‑term net worth
• Reducing work hours or business risk
• Preserving maximum flexibility (e.g. ability to move or sell)

If lifestyle and schools top the list, renovation usually deserves first look. If wealth and flexibility rank higher, a well‑structured investment purchase may fit better.

2. Run the cashflow and risk tests

For each option:

1. Calculate new total repayments at today’s rates plus 3%.
2. Check you can still save or maintain buffers after living costs and tax.
3. Stress‑test on one wage if you’re part of a couple, or a 20–30% income hit if self‑employed.
4. Confirm you’ll still hold at least 3–6 months’ repayments in offset.

3. Structure the loans cleanly

Regardless of which option you choose:

• Use separate splits for each purpose (home renovation, investment deposit, business use).
• Use offset accounts rather than redraw to keep tax tracing clean if your home might become an investment later.
• Avoid mixing personal and investment purposes in one split.

If you’re unsure which way to go, start by mapping both scenarios with a broker who also understands tax. Often the numbers and risk profile make the decision obvious once they’re in one place.

FAQs

Can I use equity for both renovations and an investment property?

Yes, if your usable equity and borrowing capacity are strong enough. The key is to split the borrowing into separate loan accounts – one for renovations (non‑deductible) and one for the investment deposit and costs (potentially deductible). This protects tax deductibility and makes it easier to adjust or refinance each piece later.

Is it better financially to renovate first or invest first?

Financially, investing first can deliver higher long‑term returns, but only if the property is well‑chosen and you can comfortably hold it through rate rises and policy changes. Renovating first often makes sense when your current home is well‑located but under‑improved, and you’re planning to stay long term. Many clients stage it: renovate to a sensible level, then invest once cashflow and buffers allow.

Do I need a construction loan to use equity for renovations?

Not always. Smaller, cosmetic or non‑structural works can often be funded through a standard top‑up or refinance with cash‑out. You typically need a construction loan when the works are structural, staged, or large relative to property value, and when the builder requires progress payments. Lenders will want detailed plans, a fixed‑price contract and council approvals.

Is interest on equity used for renovations tax‑deductible?

Usually not, if the property is your principal place of residence and you’re renovating for personal use. Interest is generally deductible only where the borrowed funds are used to produce assessable income, such as buying or improving an investment property. Because rules are tightening, getting tax advice before you mix purposes in one loan is increasingly important.

How risky is it to use equity for an investment with the new negative gearing rules?

The main added risk is cashflow. From 1 July 2027 many established residential investments bought after 12 May 2026 won’t be able to offset rental losses against salary and wages. That means you must be comfortable funding any shortfall from after‑tax income without relying on a refund. Conservative buffers and clean loan structures help manage this risk.

Key takeaways

• Treat equity as a scarce resource and decide based on your 5–10 year lifestyle and wealth goals.
• Renovations suit under‑improved homes and lifestyle priorities; investments suit strong cashflow and growth goals.
• Always test both options at today’s rates plus 3% and assume little or no negative gearing benefit.
• Keep every loan purpose in its own split, with offsets, to protect tax outcomes and flexibility.

If you want a numbers‑first view of your options, book a free 15‑minute strategy call at /contact. In one conversation you can see whether renovating, buying an investment, or waiting aligns best with your tax position, borrowing power and lifestyle plans – with your tax, your loan and your structure all considered together by a CPA, Tax Agent and Broker in one.

General advice only.