Rentvesting Calculator Australia (2025–26) | Rent vs Buy

Rentvesting is a strategy where you rent the home you live in and buy an investment property elsewhere. Instead of stretching to buy in an expensive area, you rent affordably and invest in a location with stronger rental yield or capital growth. The calculator above compares the total cost of rentvesting (rent + investment property costs, minus tax savings) against buying the same property as your home. It uses 2025-26 ATO income tax rates and state-specific land tax thresholds.

What Is Rentvesting?

Rentvesting means renting where you want to live while owning an investment property somewhere else. The term combines “renting” and “investing” and has become increasingly common in Australian property discussions as the gap between rents and mortgage repayments has widened, particularly in Sydney and Melbourne.

The strategy works because Australian tax law treats investment property expenses differently from owner-occupied property expenses. When you live in a property (PPOR — principal place of residence), mortgage interest is not tax deductible. When you own an investment property, the interest, along with other holding costs, can be deducted from your taxable income if the property runs at a loss. This is negative gearing.

For a rentvestor, the calculation is: pay rent somewhere affordable, then use your borrowing capacity to buy an investment property. The IP generates rental income, tax deductions, and (ideally) capital growth. The net weekly cost of the rentvesting approach may be lower than the cost of buying a home outright, at least in the early years.

Rentvesting vs Buying a Home: The Real Math

Consider a scenario based on a common question from Australian property forums: “Rent is $450/week but a mortgage on the same property would be $600/week. Is rentvesting the only logical move?”

The scenario:

• Property: $600,000 in Melbourne
• Deposit: $120,000 (20%, no LMI)
• Loan: $480,000 at 6.5% interest-only
• Rent you currently pay: $450/week
• IP weekly rent received: $500/week (from tenants)
• IP expenses (rates, insurance, management, maintenance): $10,000/year
• Annual salary: $120,000

Option A — Buy the property as your home (PPOR):

• Annual mortgage (IO): $31,200
• Annual expenses (rates + insurance + maintenance, no management): $5,500
• No rental income (you live in it)
• No tax deduction (PPOR interest is not deductible)
• No land tax (PPOR exempt in all states)
• Total annual cost: $36,700 ($706/week)

Option B — Rent + invest (rentvesting):

• Annual rent you pay: $23,400 ($450 x 52)
• Annual IP mortgage (IO): $31,200
• Annual IP expenses: $10,000
• Annual IP rental income: -$25,000 ($500 x 50 weeks)
• Net rental loss: $16,200 ($31,200 + $10,000 - $25,000)
• Tax saving at 32% marginal rate (incl. Medicare): ~$5,184
• Land tax (VIC, assuming ~$250,000 land value): ~$475
• Total annual cost: $34,891 ($671/week)

In Year 1, rentvesting costs approximately $35 less per week than buying the same property as a home. The difference comes entirely from the tax deduction on the investment property — a benefit that does not exist for owner-occupiers.

Both scenarios build the same equity in the same property. But the rentvestor pays less out of pocket because the ATO effectively subsidises part of the cost through negative gearing.

The Crossover Point: When Does Your Mortgage Become Cheaper Than Rent?

The key limitation of rentvesting is that rent increases over time while a fixed mortgage payment does not. If you lock in a fixed mortgage today, the repayment stays the same in Year 10. Your rent does not.

At 3.5% annual rent growth (close to the national long-term average), $450/week rent becomes:

• Year 5: $535/week
• Year 10: $635/week
• Year 15: $754/week
• Year 20: $895/week

Meanwhile, interest-only mortgage payments on $480,000 at 6.5% remain $600/week. The crossover point — when rent exceeds the mortgage interest — occurs around Year 9 in this example.

For principal and interest loans, the crossover arrives sooner. As principal is repaid, the interest portion decreases, making the mortgage effectively cheaper each year while rent keeps rising.

This does not mean rentvesting stops making sense at the crossover point. Even after rent exceeds the mortgage, the rentvestor still has the tax deduction, rental income, and capital growth on the IP. But the cash flow advantage narrows and eventually reverses. The 5-year comparison table in the calculator above shows how your costs evolve over time.

Tax Benefits of Rentvesting

Rentvesting unlocks three tax benefits that owner-occupiers cannot access:

1. Negative gearing. If your IP expenses (interest, rates, insurance, management, depreciation) exceed rental income, the net loss reduces your taxable income. At a 32% marginal rate, a $16,000 net rental loss saves approximately $5,120 in tax per year. Use our negative gearing calculator to estimate your specific tax saving.

2. Depreciation. Division 43 (building structure, 2.5% per year for properties built after September 1987) and Division 40 (plant and equipment for new items) provide non-cash deductions that increase your tax saving without additional spending. A $500-$770 quantity surveyor report can unlock $5,000-$20,000+ in first-year deductions. See our depreciation calculator.

3. CGT discount. When you eventually sell the IP after holding for 12+ months, the 50% CGT discount halves the taxable capital gain. An owner-occupier selling their PPOR pays no CGT at all (main residence exemption), but the rentvestor has had years of tax deductions that the owner-occupier did not receive. Estimate your CGT liability with our CGT calculator.

The trade-off: a PPOR is completely exempt from both CGT and land tax. An investment property is subject to both. The rentvesting strategy trades those exemptions for annual tax savings through negative gearing and depreciation.

Hidden Costs People Forget

When comparing rent vs buy, several costs are often underestimated or omitted:

• Land tax: Investment properties are subject to state land tax above the threshold. In Victoria, land tax can start from $50,000 in taxable land value. PPOR owners are exempt. Use our land tax calculator to check your state.
• Property management fees: Typically 7-10% of gross rent, plus letting fees for finding new tenants.
• Vacancy: Even 2-4 weeks per year of vacancy reduces your annual rental income by 4-8%.
• Stamp duty: A one-off purchase cost that varies by state. On a $600,000 property in Victoria, stamp duty for an investor is approximately $31,000.
• CGT on sale: When you sell the investment property, capital gains tax applies on the gain (with the 50% discount if held 12+ months). PPOR sales are CGT-free.
• Maintenance and repairs: Budget $2,000-$5,000 per year for unexpected repairs.

Our calculator includes all of these costs so you see the full picture, not just mortgage vs rent.

First Home Buyer Grants: What You Lose

Buying an investment property first may disqualify you from First Home Buyer (FHB) concessions when you later purchase a home to live in. The rules vary by state:

• NSW: The First Home Buyer Assistance Scheme provides stamp duty exemption (under $800,000) or concession ($800,000-$1,000,000). You must live in the property for 12 continuous months.
• Victoria: The First Home Owner Grant ($10,000 for new homes under $750,000) requires you to live in the property for 12 months. If you already own property, you may be ineligible.
• Queensland: The $30,000 First Home Owner Grant (new homes under $750,000) requires you to live in the property as your principal place of residence.

If you are considering rentvesting, check whether you would otherwise qualify for FHB concessions in your state before proceeding. The stamp duty saving alone can be $20,000-$30,000 in some states. This is general information only — contact your state revenue office for current eligibility rules.

When Rentvesting Does Not Make Sense

Rentvesting is not the right strategy for everyone. It may not be suitable when:

• The rent-to-mortgage gap is small. If rent is $550/week and a mortgage is $600/week, the $50 difference may not justify the complexity, stamp duty, and CGT exposure of owning an IP.
• You want lifestyle stability. Renting means the landlord can sell or choose not to renew your lease. If stability and the ability to renovate matter to you, owning your home has non-financial value.
• Capital growth favours your home area. If the area you want to live in has higher expected growth than the area you would invest in, buying your home builds more wealth over time.
• You are eligible for substantial FHB concessions. The stamp duty saving and grants available to first home buyers can offset years of negative gearing tax benefits.

The calculator above helps you quantify the financial comparison, but the decision also involves lifestyle factors that a calculator cannot measure.

Go Deeper with the Full Spreadsheet

This calculator compares Year 1 costs and a 5-year snapshot. Our premium spreadsheet models 10-30 years with changing interest rates, rent growth, and depreciation decline. The Pro and Complete tiers include a dedicated Rent vs Buy tab that extends this comparison across your full investment horizon, including a crossover point analysis and year-by-year net wealth tracking for both scenarios.

If you already hold an investment property and want cleaner tax-time records, the ATO rental property worksheet tracks rental income and deductible expenses in one sheet.