How Lenders Calculate Your Borrowing Capacity
Lenders calculate borrowing capacity using your income, existing debts, living expenses, and a serviceability buffer that assesses whether you can afford repayments at a rate 3.0 percentage points above the loan product rate. Your gross income forms the starting point, then all regular debt commitments are deducted, followed by an estimate of your living expenses based on either declared figures or a benchmark set by the lender. The amount you can borrow depends on the residual income after those deductions and the interest rate used in the assessment.
Loganholme sits within the Logan City Council area, where median property values differ across unit and house types, and many buyers in the suburb are purchasing established homes within commuting distance of both Brisbane CBD and the northern Gold Coast employment hubs. A buyer earning $95,000 per year with a car loan of $380 per month and no other debts may find their borrowing capacity sits around $520,000 to $560,000 depending on the lender's expense benchmark and the product rate used in the assessment. That same buyer, after clearing the car loan, could see their capacity increase by $80,000 to $100,000 without any change in income.
The serviceability buffer is an APRA requirement that applies to all authorised deposit-taking institutions. If a lender offers you a variable rate at 6.1 per cent, the serviceability assessment uses 9.1 per cent. That higher rate determines whether you can afford the loan, not the rate you actually pay. The difference between the two figures is significant when applied to a loan amount in the mid-six-figure range.
Income Types That Strengthen Your Application
Base salary is the most straightforward form of income and is typically assessed at 100 per cent of the declared amount. Overtime, bonuses, and commission income are assessed differently depending on consistency and documentation. Most lenders require at least six months of payslips showing regular overtime, with some preferring 12 months or two years of tax returns to confirm the income is sustainable.
Consider a buyer working in logistics at one of the industrial estates near the Pacific Motorway who earns a base salary of $78,000 plus regular weekend penalty rates averaging $14,000 per year. If the overtime has been consistent for 18 months and appears on consecutive payslips, most lenders will assess 80 to 100 per cent of that additional income. The buyer's assessed income rises from $78,000 to around $89,000 to $92,000, lifting borrowing capacity by $60,000 to $80,000. Without the overtime documented across enough pay cycles, the additional income is ignored entirely.
Self-employed applicants are generally assessed using the most recent two years of tax returns, with income calculated as net profit plus any add-backs such as depreciation. Lenders apply different policies on provisional income and whether the current year's earnings can be considered before lodgement of the tax return. If you operate as a company and take a mix of salary and dividends, some lenders assess the total income while others assess only the salary component unless the business financials are provided.
Ready to chat to one of our team?
Book a chat with a Mortgage Broker at Wagstaff Finance today.
How Living Expenses Affect What You Can Borrow
Lenders assess living expenses using either your declared figures or a benchmark derived from the Household Expenditure Measure, which is maintained by industry and adjusted periodically. The benchmark applies a minimum expense level based on household size and income, and where your declared expenses fall below the benchmark, the lender uses the higher figure.
A couple applying jointly with a combined income of $145,000 and two dependents may declare monthly expenses of $3,200. The lender's benchmark for that household composition and income level might sit at $3,800. The assessment uses $3,800, not the declared amount. The additional $600 per month reduces borrowing capacity by approximately $120,000 to $140,000 depending on the lender and the rate applied. Buyers often underestimate expenses or fail to include categories the benchmark captures, and the lender applies the more conservative figure regardless.
If you hold active credit card facilities, most lenders assess a liability based on the limit rather than the outstanding balance. A card with a $15,000 limit and a nil balance is treated as though you are making minimum repayments on the full $15,000, typically around 3.0 to 3.8 per cent of the limit per month. That phantom repayment of $450 to $570 per month reduces borrowing capacity by $90,000 to $115,000. Closing unused facilities before applying removes that impact entirely.
Debt-to-Income Limits and What They Mean for Loganholme Buyers
From 1 February 2026, APRA introduced a debt-to-income lending limit requiring each authorised deposit-taking institution to restrict lending above six times gross income to no more than 20 per cent of new owner-occupier loans and 20 per cent of new investor loans each quarter. The limit applies at the lender level, not the borrower level, and is measured quarterly. If a lender has already written a high proportion of loans above the six-times threshold in a given quarter, they may decline applications that would otherwise meet serviceability requirements or direct borrowers toward loan structures that reduce the DTI ratio.
A buyer earning $110,000 per year applying for a $680,000 loan has a DTI ratio of 6.18. That application falls within the restricted portion of the lender's quarterly allocation. If the lender has capacity remaining within the 20 per cent threshold, the application can proceed. If the lender is close to the quarterly cap, the application may be declined or the buyer may be asked to increase their deposit to bring the loan amount below $660,000, reducing the DTI ratio to exactly 6.0. The restriction does not prevent high DTI lending entirely, but it does create variability in approval outcomes depending on timing and the lender's quarterly position.
Loans for the purchase or construction of new dwellings are excluded from the DTI limit. A buyer in Loganholme purchasing a newly built townhouse or constructing a new home on vacant land is not subject to the restriction, even if their DTI ratio exceeds six times income. The policy is designed to support new housing supply while limiting leverage on established property purchases.
When Improving Borrowing Capacity Makes More Sense Than Waiting for Rates to Fall
Borrowers often delay applications in the expectation that lower rates will increase their borrowing capacity. The serviceability buffer moves with the product rate, so a reduction in rates increases capacity, but the relationship is not linear and the timing is uncertain. A buyer assessed at a product rate of 6.1 per cent is tested at 9.1 per cent. If the product rate falls to 5.8 per cent, the test rate falls to 8.8 per cent, and borrowing capacity increases by around 3 to 4 per cent for the same income and expenses. That increase is modest compared to the impact of reducing a $25,000 personal loan or closing a $12,000 credit card limit, either of which could lift capacity by 10 to 15 per cent immediately.
In our experience, buyers who focus on clearing short-term debts and building a consistent income record over six to twelve months see a more significant and reliable improvement in borrowing capacity than those waiting for rate movements that may or may not occur within a useful timeframe. If your income is due to increase due to a pay rise or a change in employment, documenting that increase through payslips and applying once the income is established delivers a measurable result. Loan serviceability relies on verified, current financial information, not projected circumstances.
Lenders Mortgage Insurance and the 80 Per Cent LVR Threshold
Lenders mortgage insurance applies to residential loans where the loan-to-value ratio exceeds 80 per cent. The premium is calculated on a sliding scale based on the loan amount and LVR, and is a one-time cost borne by the borrower. A buyer purchasing a property valued at $620,000 with a 10 per cent deposit borrows $558,000, resulting in an LVR of 90 per cent. The LMI premium on that loan sits in the range of $16,000 to $22,000 depending on the lender's insurer and the applicant's profile. The premium can be capitalised into the loan amount, but doing so increases the total borrowing requirement and the ongoing repayments.
Buyers using the Australian Government 5% Deposit Scheme can borrow up to 95 per cent of the property value without paying LMI, provided the property is within the scheme's price cap and the buyer meets eligibility requirements. In Queensland, the price cap for Loganholme as part of a capital city or regional centre is $1,000,000. The scheme is available through participating lenders and cannot be combined with Help to Buy. It is particularly relevant for buyers who have sufficient income to service a loan at 95 per cent LVR but prefer to avoid the LMI premium or redirect savings toward settlement costs and post-purchase expenses.
Using Pre-Approval to Confirm Your Position Before Committing
Pre-approval provides written confirmation from a lender that they are willing to lend a specified amount subject to valuation and final conditions. It does not guarantee unconditional approval, but it removes uncertainty around income assessment, expense benchmarking, and credit history before you make an offer. Home loan pre-approval is typically valid for three to six months depending on the lender, and allows you to move quickly when a suitable property becomes available.
Loganholme has a mix of established homes, newer estates, and townhouse developments, with variation in property condition and tenure type. A pre-approval confirms the amount you can borrow and the deposit required, allowing you to focus your search on properties within that range and avoid the situation where you make an offer conditional on finance and subsequently find your borrowing capacity falls short due to expense benchmarks or uncommitted debt facilities you had not accounted for. The lender conducts a full assessment at pre-approval stage, including a credit check and verification of income and liabilities, so the outcome reflects the same criteria that will apply at formal application.
If your circumstances change between pre-approval and formal application, such as a change in employment, an increase in credit card limits, or new debt commitments, the lender reassesses your position and may adjust the approved amount. Pre-approval is not a static figure, and maintaining the financial position you presented at the time of assessment is necessary to preserve the outcome.
What to Bring to Your First Appointment
An initial appointment focuses on confirming your income, liabilities, deposit position, and the type of property you intend to purchase. Payslips covering the most recent three months, tax returns for the most recent two years if you are self-employed, and recent statements for all bank accounts, credit cards, and loan facilities provide the information needed to produce an accurate assessment. If you receive income from investments, rental properties, or family tax benefits, statements or tax return schedules showing that income allow it to be included in the assessment where the lender's policy permits.
A current credit report gives visibility of any defaults, judgments, or credit enquiries that may affect your application and allows those issues to be addressed before proceeding. You can obtain your credit report at no cost from the major credit reporting bodies. If you are purchasing in Loganholme and require specific guidance on lender policies for the area, the property type, or your occupation, that detail is best discussed once your financial position is on the table.
Call one of our team or book an appointment at a time that works for you. We work with buyers across the Logan City Council area and can provide a borrowing capacity assessment based on current lender criteria and your verified financial position.
Frequently Asked Questions
How do lenders calculate my borrowing capacity?
Lenders use your gross income, deduct all debt commitments and living expenses, then apply a serviceability buffer of 3.0 percentage points above the product rate. The remaining income determines the loan amount you can service. Each lender applies different expense benchmarks and income assessment policies, which can result in different borrowing capacity outcomes for the same applicant.
What is the debt-to-income limit and does it apply to me?
From 1 February 2026, lenders can approve no more than 20 per cent of new owner-occupier loans and 20 per cent of new investor loans each quarter to borrowers with a DTI ratio of six times gross income or higher. The limit applies at lender level and is measured quarterly. Loans for new dwelling purchases or construction are excluded from the restriction.
Will closing my credit card increase my borrowing capacity?
Yes. Lenders assess credit card limits as though you are making minimum monthly repayments on the full limit, even if the balance is nil. A $15,000 limit can reduce borrowing capacity by $90,000 to $115,000. Closing unused facilities before applying removes that assessed liability and increases the amount you can borrow.
Do I need to pay lenders mortgage insurance if my deposit is less than 20 per cent?
LMI applies when your loan-to-value ratio exceeds 80 per cent. The premium is calculated on the loan amount and LVR and is a one-time cost. Buyers using the Australian Government 5% Deposit Scheme can borrow up to 95 per cent LVR without paying LMI if they meet eligibility criteria and the property is within the scheme's price cap.
How is overtime or commission income assessed?
Lenders require evidence that overtime or commission is regular and sustainable, typically through at least six to twelve months of consecutive payslips or two years of tax returns. Most lenders assess 80 to 100 per cent of verified additional income. Without sufficient history, the income is excluded from the assessment entirely.
