Borrowing power guide
How Much Can I Borrow on a $100,000 Salary?
An estimate for a single applicant on $100,000 gross annual income — produced with Brickwise's borrowing-capacity engine using the real APRA serviceability buffer. General information, not advice.
Estimated borrowing capacity
$690,000
Typical range $550,000 – $760,000
- Monthly repayment (est.)
- $4,361
- Indicative purchase price
- $790,000
- Indicative LVR
- 87%
The assumptions behind this estimate
This figure is a clean single-applicant scenario — a ceiling a buyer on this income could approach, not a guaranteed approval. Every input is documented so you know exactly what's driving it.
- Income: $100,000 gross annual (single applicant).
- Deposit: $150,000 — 1.5× gross annual income (illustrative deposit).
- Living expenses: $2,500/month — moderate lifestyle benchmark for a single applicant.
- Existing debts: none (no HECS, credit-card limits, or loans).
- Interest rate: 6.5% p.a. variable, assessed at 9.5% (6.5% + the 3% APRA buffer).
- State: NSW (stamp duty + acquisition costs).
How income turns into borrowing capacity
Australian lenders use a serviceability formula: take your eligible income, subtract living expenses and the stress-tested cost of all existing debts, then see how much is left to service a new loan — assessed at the buffer rate, not the rate you actually pay.
On $100,000 that leaves a monthly surplus of roughly $5,833 after the assumed $2,500/month living costs. Spread over a 30-year term at 9.5%, that surplus services a loan of about $690,000.
For the mechanics in depth, read the complete guide: How Much Can I Borrow for an Investment Property in Australia.
What changes your number
- Deposit size. A larger deposit raises the purchase price you can reach and can avoid LMI (lender's mortgage insurance) at ≤80% LVR.
- Existing debts. Credit-card limits (not just balances), HECS, personal and car loans all reduce assessed surplus — a $20K limit alone can cut capacity by $80K–$120K.
- Living expenses. Lenders assess yours against the HEM benchmark; declaring less than HEM is rarely accepted.
- Interest rates. Both the actual rate and the buffer rate move together — a 1% rate rise trims capacity by ~10–12%.
- Lender choice. Capacity for the same applicant varies $100K–$250K+ across lenders.
Borrowing power by income
How the estimate shifts across nearby incomes (same single-applicant assumptions):
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Start the free questionnaireFAQ — borrowing on $100,000
How much can I borrow on a $100,000 salary in Australia?
Based on a clean single-applicant scenario — $100,000 gross income, no HECS or credit-card debt, 2,500/month living expenses, a 1.5× gross annual income (illustrative deposit) — the estimated realistic borrowing capacity is around $690,000 (range $550,000 to $760,000), assessed at 9.5% (the 6.5% benchmark rate plus the APRA 3% buffer). This is a general estimate for information only — your actual capacity depends on your specific finances and the lender's policy.
How does the APRA 3% buffer affect borrowing on a $100,000 income?
APRA requires lenders to assess your repayments at the actual interest rate plus a minimum 3% buffer, even though you pay the lower rate. On a $100,000 income that's an assessment rate of 9.5% versus the 6.5% you'd actually pay. The buffer is the single biggest constraint on Australian borrowing capacity — when rates fall, capacity rises, and vice versa.
What would increase my borrowing from 690K?
Reducing credit-card limits (lenders assess the full limit, not the balance), paying out personal or car loans, lowering declared living expenses, adding a partner's income, or choosing a larger deposit all lift capacity. So does lender choice — capacity for the same applicant can vary $100K–$250K+ across lenders. A broker maps the policy that fits your situation.
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