Calculator
Mortgage Holding Cost Calculator
Mortgage Holding Cost Calculator
Annual Recurring Ownership Costs
Total Monthly Holding Cost
$4,280.5
Affordability Analysis
Owning this property costs $4,280.5 a month all-in: the $3,713.84 principal-and-interest repayment plus $566.67 of recurring ownership costs — council rates, water, building insurance and upkeep. Over a year that is $51,366.04, which is the honest number your income needs to carry, not just the bank's repayment figure. Your 80.0% LVR sits at or below the 80% line, so no LMI should apply.
*Holding costs are modelled from the figures you enter; actual council, water and strata charges vary by state and property, and lenders' fees are excluded. Investment-property tax deductions are not applied here. Educational only, not credit or tax advice.
The True Monthly Cost of Owning a Property
The bank quotes you a repayment; the property bills you a lifestyle. Australian ownership costs stack well beyond principal and interest: council rates averaging $1,200 to $2,200 a year, water and sewerage charges around $1,000 to $1,800, building insurance that has risen sharply in bushfire and flood-prone areas, body corporate levies of $3,000 to $6,000 a year for units, and a maintenance allowance that responsible owners budget at roughly 1% of the property value annually. On a typical capital-city house these ownership costs add $500 to $900 a month on top of the loan — money that never appears in the lender's serviceability figure but leaves your account every month regardless. For owner-occupiers this is the honest affordability test: a repayment you can 'technically' service can still be a lifestyle trap once the full stack is priced. For property investors the same stack determines the geared gap — the difference between rent in and costs out — which is what negative gearing actually gears. A 3.8% gross yield looks very different once water rates and strata levies take their cut; some high-strata units never cover their holding costs at any realistic rent. This calculator replaces US-style escrow thinking with the Australian cost stack. Enter the price, deposit and loan terms, then the annual figures from the council rates notice, water bill, insurance quote and strata budget. It returns the all-in monthly holding cost, the annual total, and — if you enter a rent figure — the gross yield, the share of costs the rent covers, and the monthly shortfall you would fund from salary or dividends.
From Repayment to All-In Cost
The loan side is standard amortisation: loan amount (price minus deposit) at the annual rate over your term, producing the principal-and-interest repayment per month via the ordinary annuity formula. The LVR readout — loan divided by price — flags whether you are above the 80% line where Lenders Mortgage Insurance would add a premium to these figures. The holding side is deliberately simple and honest: every recurring cost you enter is divided by twelve and stacked on the repayment. Council rates, water rates, building insurance, body corporate levies and a maintenance allowance sum to an annual ownership bill, and the all-in monthly holding cost is the repayment plus that stack. There is no escrow account in Australia — these bills arrive separately — so the calculator makes you see them as one number, the way your bank balance actually experiences them. When a weekly rent is entered, the tool computes gross rental yield (weekly rent × 52 ÷ price), the rent-coverage ratio (annual rent ÷ total annual cost) and the net annual shortfall before tax. Note the deliberate framing: this is a pre-tax, pre-depreciation cash view. Negative gearing benefits, Division 40 and 43 deductions and land tax belong to the dedicated tax tools; here the question is the raw one — does the rent pay the bills?
Expert Insights
Budget 1% for Maintenance or Pay for It in Lumps
Owners who skip the maintenance allowance don't avoid the cost — they convert it into irregular four-figure shocks: a $4,000 hot-water system, an $8,000 roof repair, an $11,000 stumping job on a Queenslander. A disciplined 1%-of-value annual allowance smooths those into a budget line, and for investors it is generally deductible when actually spent. If you have never spent it, you have a renovation coming, not a saving.
Strata Levies Are a Yield Tax on Units
Body corporate fees of $4,000-$8,000 a year quietly remove a full percentage point of gross yield from most units — and special levies for lift replacements or facade work arrive on top, sometimes $10,000 at a time. When comparing a unit against a house, price the levy into the yield first: a 4.5% unit yield net of $5,000 in levies can underperform a 3.8% house yield with none. Read the strata budget and sinking fund before you buy, not after.
The Rent-Coverage Ratio Is Your Risk Gauge
Investors obsess over yield percentages, but the ratio that matters monthly is rent ÷ total holding cost. Above 100% the property pays its own way and rate rises are absorbed by the rent; at 70-90% you are funding a modest, plannable gap; below 60% every rate rise, vacancy or water-bill increase comes straight from your salary. Australian metro houses typically sit at 55-75% — know your number and size your buffer to it.
Actionable Tips
- 1
Pull the Real Numbers Before You Offer
Every figure this calculator needs is public before auction day: the council rates notice is in the section-32/contract pack, water charges are on the vendor's bill, strata budgets are in the owners-corporation certificate, and insurance quotes are free online. Ten minutes of data beats discovering a $6,000 levy after settlement — and low levies or rates are a genuine negotiating point.
- 2
Stress the Stack, Not Just the Rate
Run the calculation twice: once at today's rate and once two points higher. The repayment jumps, but notice the holding stack doesn't — rates, water and insurance rise with inflation regardless of the RBA. If your budget only survives the first scenario, you are one renewal cycle from stress. The all-in view is exactly how lenders' serviceability teams will judge you too.
- 3
Compare Owner-Occupied and Rented on the Same Screen
Enter your rent figure even for a home you plan to live in. It prices your implicit yield — what you 'earn' by living there instead of renting it out — and shows whether renting and investing the difference would beat owning. Many owners discover their dream suburb's rent-coverage ratio is so poor that buying the cheaper suburb and investing the gap wins on both cash flow and net worth.
Real-World Examples
The Harrisons Priced the Stack Before Bidding
Pre-approved for a $950,000 repayment, the Harrisons ran the full holding stack on their target Melbourne house: rates, water, insurance and a maintenance allowance added $780 a month to the $4,900 repayment. Seeing the $5,680 all-in figure, they dropped their ceiling $60,000 and won a comparable home — the monthly breathing room funded their first ETF contributions instead of a repayment they'd regret.
Jenny Caught the Levy Trap
Jenny nearly bought a $620,000 inner-Brisbane apartment on a 4.4% gross yield — until the holding-cost view showed $5,900 a year of body corporate levies dragging rent coverage to 61%. A special-levy notice for facade work was already circulating in the strata records. She switched to a walk-up 1970s block with $1,800 in levies; rent coverage jumped to 84% and her monthly gap halved.
Marcus Sized His Gap Before Going Negative
Marcus bought a $700,000 Adelaide rental at 90% LVR knowing the rent would not cover it. The calculator put his shortfall at $740 a month — a number he pre-funded with a dedicated offset account holding six months of gaps plus rates. When the hot-water system died in year one, the maintenance allowance had already budgeted for it, and the geared investment never touched his family's everyday account.
Glossary of Terms
- Holding Cost
- The full monthly cost of owning a property: the loan repayment plus council rates, water rates, building insurance, body corporate levies and maintenance.
- Gross Rental Yield
- Annual rent divided by the property price, before any costs — the headline yield quoted in listings.
- Rent-Coverage Ratio
- Annual rent divided by total annual holding cost; above 100% the property pays its own way, below it you are funding the gap.
- Body Corporate Levy
- Compulsory strata fees covering common-property administration and the sinking fund — typically $3,000-$6,000 a year for Australian units.
Frequently Asked Questions
Everything you need to know about this topic.
Ivy Sinclair-Wren
Financial Chaos Analyst
Ivy Sinclair-Wren is a Financial Chaos Analyst covering investing, AI, wealth psychology, and the emotional consequences of opening finance apps during market crashes. Based in Melbourne, she specializes in demystifying the Australian tax code and helping users navigate the intersection of spreadsheet logic and human irrationality.