Loan & finance calculators
31 calculators across four areas — residential lending, the commercial side most calculators ignore, the decisions around a mortgage, and income tax and take-home pay on current ATO rates. Every one shows its working and states what it assumes.
Serviceability on the asset rather than the borrower - development, construction, bridging, equipment and business cash flow.
ICR & DSCR
Commercial lenders do not assess a property loan on your personal income. They test whether the asset covers its own debt, using the Interest Cover Ratio and the Debt Service Cover Ratio. This calculator produces both and shows the maximum loan each supports.
Development feasibility
Build a residual feasibility for a small development: land, construction, professional fees, finance and contingency into Total Development Cost, then profit measured both on cost and on gross realisation. Includes GST under the margin scheme.
Construction draw schedule
Model a construction loan drawdown stage by stage. Interest is charged only on funds drawn, so the cost builds through the project - this shows the schedule, the interest at each stage and the total capitalised interest by practical completion.
Bridging finance cost
Bridging finance covers the gap between buying and selling. The number that matters is peak debt - the total owed at the worst moment - and whether the sale clears it. This calculator models peak debt, capitalised interest and the end debt you are left with.
Commercial LVR & security
Commercial lenders apply different maximum LVRs by asset type, and often take multiple properties as security. This calculator works out the blended lending value across your security pool and whether it covers the loan you need.
Equipment finance comparison
Compare a chattel mortgage, a finance lease and an operating lease on the same asset. The repayments are often similar - what differs is who owns the asset, when you claim GST, and whether you depreciate the asset or deduct the payment.
Working capital gap
Work out your cash conversion cycle and the funding gap it creates. If you pay suppliers before your customers pay you, growth consumes cash - and the faster you grow, the bigger the hole.
Invoice finance advance
Invoice finance advances a percentage of your unpaid invoices now, and pays the balance when the customer settles. This calculator shows the cash released, the total fee and - most importantly - the effective annual rate, which is usually far higher than the headline discount rate suggests.
SMSF LRBA feasibility
An SMSF loan through a Limited Recourse Borrowing Arrangement (LRBA) lets a self-managed super fund borrow to buy property. The fund must service the loan using rental income and super contributions alone. This calculator helps assess whether the fund's cash flow is sufficient and how much liquidity buffer remains.
Repayments, borrowing power, deposit and purchase costs, and the decisions that follow settlement.
Repayment & amortisation
Work out the repayment on an Australian home loan and see exactly how it splits between interest and principal, month by month. Add extra repayments to see how much time and interest they remove.
Borrowing power
Estimate how much an Australian lender would lend you. Lenders assess your repayment capacity at your actual rate plus APRA's serviceability buffer, currently 3.0 percentage points, which is why your assessed capacity is lower than the rate you will actually pay suggests.
Stamp duty by state
Estimate transfer duty on a residential property purchase in any Australian state or territory, plus the other upfront costs that sit on top of your deposit.
LVR & LMI estimator
Work out your loan-to-value ratio and estimate the Lenders Mortgage Insurance premium payable above 80% LVR, including what it costs once capitalised onto the loan.
Offset & extra repayments
See what money in an offset account and extra repayments actually save you. Both reduce interest, but they work differently - an offset keeps the money accessible while extra repayments reduce the debt itself.
Refinance break-even
Work out whether refinancing pays once switching costs are counted, and how many months it takes to break even. Also shows what resetting to a fresh 30-year term really costs.
Split loan comparison
Compare fixing all, part or none of your loan. A split lets you lock in certainty on part of the debt while keeping offset and extra-repayment flexibility on the rest. Test what happens if rates rise or fall.
The decisions around a home loan - interest-only expiry, rate shocks, saving a deposit, comparing offers on true cost, and whether to buy at all.
Interest-only vs P&I
See what an interest-only period really costs, and how far repayments jump the day it ends. The trap is not the lower payment - it is that the loan still has to be repaid over a shorter remaining term, so the step up at expiry is much larger than most borrowers expect.
Rate rise stress test
Test a mortgage against higher rates before a lender does. Australian lenders must assess you at your actual rate plus a serviceability buffer, so the repayment that decides your application is well above the one you would actually pay.
Deposit savings goal
Work out how long it takes to save a deposit when the target is moving. Most deposit calculators assume prices stand still; this one grows the purchase price while you save, which is the difference between a plan that works and one that never quite gets there.
Loan comparison
Compare up to three loans on total cost rather than headline rate. Upfront and annual fees routinely reverse the ranking over a realistic holding period, which is exactly what a rate-only comparison hides.
Negative gearing
Work out what an investment property actually costs to hold each week after tax. It separates the cash position from the taxable position - depreciation is deductible without being a cash cost, which is why the two differ - and shows the capital growth needed just to break even.
Repay vs invest
Should spare cash go into the mortgage or the market? Paying down a loan is a guaranteed, tax-free return equal to your interest rate, which is a higher bar than it first appears - an investment has to beat it after tax and after risk.
Rent vs buy
Compare buying against renting and investing the difference, measured on net wealth at the end of the period rather than monthly cost. Buying almost always costs more month to month early on - the real question is whether equity and capital growth more than make that back over your actual holding period.
Take-home pay, income tax, HECS-HELP, superannuation and salary sacrifice, using current ATO rates and thresholds.
Pay calculator
Work out what actually lands in your account. This applies the current ATO tax scale, Medicare levy and surcharge, HELP repayments, tax offsets and the super guarantee, then shows the result across every pay cycle. Change the financial year to see how the tax cuts affect you.
Income tax
Estimate your income tax, Medicare levy and refund position for the year, and see exactly which bracket each dollar falls into. Australia taxes income in slices - moving into a higher bracket only ever taxes the dollars above that threshold, never your whole income.
HECS / HELP
Work out your compulsory HELP repayment and how long the debt takes to clear. Since 2025-26 repayments are marginal - calculated only on income above the threshold - which is far gentler than the old system where crossing a threshold applied a rate to your whole income.
Super contributions
See your total concessional contributions against the cap, what contributions tax and Division 293 take out, and where the balance lands over time. The cap counts employer super, salary sacrifice and personal deductible contributions together - it is easy to breach it without noticing.
Salary sacrifice
Compare what salary sacrificing costs your take-home pay against what actually lands in super. The gap is your marginal rate less the 15% contributions tax - but HELP repayments and Division 293 can close it, so it is worth checking rather than assuming.
Hourly to salary
Convert an hourly rate into an annual salary and take-home pay, including overtime. Worth knowing before you compare an hourly role with a salaried one: super is compulsory on ordinary hours only, so overtime lifts your pay but not your super.
Bonus tax
Work out what a bonus is really worth after tax, and whether sacrificing it into super leaves you better off. The tax withheld from a bonus payslip is usually more than the true cost, because withholding annualises the pay period - the difference comes back at tax time.
Contractor rate
Compare an ABN contract rate against a permanent salary on equal terms. A day rate has to cover the super, annual leave, sick leave and downtime an employer would otherwise fund, so the headline number needs to be well above the salaried equivalent before you are actually ahead.
General advice warning: These calculators provide general information only. They do not take into account your objectives, financial situation or needs, and they are not personal credit or financial advice.
Results are estimates. Lender policies, interest rates, duty scales and insurance premiums change frequently and vary between providers. Confirm any figure with a licensed credit representative before acting on it.