Serviceability

Serviceability is your ability to comfortably afford loan repayments based on your income, living expenses, existing debts, and financial commitments. Lenders assess this before approving your loan to ensure you won't default.

How Serviceability Works

Lenders use complex calculators to determine if you can afford a loan, factoring in:

Income (what you earn):

• Salary/wages
• Rental income (often counted at 80%)
• Business income (self-employed)
• Investment income
• Government benefits (Centrelink, some count, some don't)

Expenses (what you spend):

• Living costs (groceries, utilities, transport, etc.)
• Existing loan repayments (car loans, personal loans)
• Credit card limits (not balances—full limit)
• HECS/HELP debt
• Dependents (children)
• Childcare, school fees
• Rental payments (if currently renting)

The formula (simplified):

Surplus = Income - Expenses - New Loan Repayments

If surplus is positive and above lender's minimum threshold, you pass serviceability.

Serviceability Buffer: The 3% Rule

Banks test if you can afford repayments at a rate 3% higher than the actual loan rate—to protect against future rate rises.

Example:

• Loan: $600,000
• Actual interest rate: 6.2% p.a.
• Monthly payment at 6.2%: $3,690

Serviceability test rate: 9.2% (6.2% + 3%)

• Monthly payment at 9.2%: $4,870
• You must prove you can afford $4,870/month even though you'll actually pay $3,690

This buffer protects you (and the lender) if rates increase.

Why Serviceability Buffers Exist

Historical context:

• 2020-2021: Interest rates at 2-3% (record lows)
• Borrowers approved based on 2% rates
• 2022-2024: Rates rise to 6-7%
• Many borrowers struggle with doubled repayments

Regulatory requirement:

• APRA (Australian Prudential Regulation Authority) mandates minimum 3% buffer
• Some lenders use higher buffers (3.5-4%) for safer lending

Example of buffer protecting borrowers:

• 2021: Borrow $700,000 at 2.5% = $2,775/month
• Bank tests at 5.5% (2.5% + 3%) = $3,975/month
• You prove you can afford $3,975/month
• 2024: Rate rises to 6.5% = $4,430/month
• You can (just) afford it because bank stress-tested your income

Without the buffer, borrowers approved at 2.5% would default when rates hit 6.5%.

Real-World Serviceability Calculation

Borrower profile:

• Single, age 32
• Gross income: $120,000/year ($10,000/month)
• Net income (after tax): $7,680/month

Expenses:

• Rent: $2,200/month
• Living expenses (bank's benchmark): $2,500/month
• Car loan: $550/month
• Credit card limit: $15,000 (minimum repayment: $450/month assumed)
• HECS debt: $25,000 (repayment via tax: $188/month)
• Total expenses: $5,888/month

Available for loan repayments:

• Net income: $7,680
• Expenses: $5,888
• Surplus: $1,792/month

Loan serviceability test (6.2% loan, tested at 9.2%):

• Loan amount: $400,000
• Payment at 9.2%: $3,247/month
• Surplus available: $1,792/month
• Shortfall: $1,455/month
• Result: REJECTED (can't afford $400,000 loan)

Maximum serviceable loan:

• Available surplus: $1,792/month
• At 9.2% test rate: Can borrow ~$220,000
• At actual 6.2% rate: Repayments would be $1,350/month

How to improve serviceability:

1. Pay off car loan ($550/month freed up)
2. Reduce credit card limit to $5,000 ($300/month freed up)
3. New available surplus: $2,642/month
4. New serviceable amount: ~$410,000

Factors That Reduce Serviceability

1. High Living Expenses

Lenders use the higher of:

• Your declared expenses
• HEM (Household Expenditure Measure) benchmark

HEM benchmark (2025):

• Single person: $2,100-$2,800/month
• Couple: $3,200-$4,000/month
• Family (2 kids): $4,500-$5,500/month

Example:

• You declare living expenses: $1,800/month (very frugal)
• HEM benchmark for single person: $2,400/month
• Lender uses: $2,400/month (the higher amount)

This prevents borrowers from understating expenses to appear more serviceable.

2. Credit Card Limits

Lenders assume you'll use your full credit card limit, even if you have $0 balance.

Example:

• Credit card limit: $20,000
• Current balance: $1,000
• Minimum repayment on $1,000: $30/month

Lender assumes:

• Balance: $20,000 (full limit)
• Minimum repayment: $600/month (3% of $20,000)
• Your serviceability is reduced by $600/month

Impact on borrowing:

• $600/month = ~$93,000 less borrowing capacity
• Solution: Cancel unused cards or reduce limits before applying

3. Existing Debts

All loan repayments count against serviceability.

Example:

• Car loan: $18,000 remaining, $480/month
• Personal loan: $8,000 remaining, $250/month
• Total: $730/month reduces borrowing capacity by ~$113,000

Options:

• Pay off debts before applying (use savings or bonus)
• Consolidate into home loan (but must count repayments)
• Wait until debts are nearly paid off

4. HECS/HELP Debt

Compulsory repayments reduce net income.

HECS repayment rates (2025): | Income | Repayment Rate | |--------|----------------| | $51,550-$59,518 | 1% | | $59,519-$63,089 | 2% | | $63,090-$66,875 | 2.5% | | $66,876-$70,888 | 3% | | $70,889-$75,140 | 3.5% | | $75,141-$79,652 | 4% | | $79,653-$84,443 | 4.5% | | $84,444-$89,527 | 5% | | $100,000+ | 7-10% |

Example:

• Gross income: $95,000
• HECS debt: $40,000
• Repayment rate: 5%
• Annual repayment: $4,750
• Monthly impact: $396 (reduces net income)

Impact on borrowing:

• $396/month = ~$61,000 less borrowing capacity

Solution: No way to avoid this, but consider paying off HECS before applying if you have savings (though this may reduce deposit).

5. Dependents (Children)

Each dependent increases living expense benchmarks.

HEM adjustment:

• Single, no kids: $2,400/month
• Single, 1 child: $3,100/month (+$700)
• Single, 2 children: $3,800/month (+$1,400)

Impact:

• Each child reduces borrowing capacity by ~$108,000

Example:

• Single parent, income $110,000, 2 kids
• HEM expenses: $3,800/month
• Childcare: $1,800/month (sometimes partially counted)
• Total expenses: $5,600+ vs $2,400 for single person
• Borrowing capacity: $320,000 vs $600,000 (single, no kids)

6. Investment Property Negative Gearing

Rental income counts, but so do all expenses.

Example:

• Own investment property worth $550,000
• Loan: $450,000 at $2,700/month
• Rental income: $2,000/month (bank counts 80% = $1,600)
• Rates, strata, insurance: $600/month
• Net impact: -$1,700/month (reduces serviceability)

Lenders calculate:

• Rental income: $1,600 (only 80%)
• Loan repayment: $2,700
• Other costs: $600
• Net: -$1,700/month (reduces borrowing capacity by ~$263,000)

Strategy: If investment property is heavily negatively geared, consider selling before applying for new home loan.

Factors That Improve Serviceability

1. Higher Income

Most direct way to improve serviceability.

Example:

• Current income: $90,000
• Borrowing capacity: $450,000
• Salary increase to $110,000 (+$20,000)
• New borrowing capacity: $550,000 (+$100,000)

Every $1,000/month extra income ≈ $155,000 extra borrowing capacity

Strategies:

• Negotiate raise or promotion
• Take on overtime or second job
• Include partner's income (joint application)
• Include consistent bonuses (with 2+ year history)

2. Lower or Clear Debts

Eliminate repayments to free up cashflow.

Example:

• Car loan: $450/month, 18 months remaining, $7,500 owing
• Pay it off with savings: $7,500
• Frees up: $450/month
• Increases borrowing capacity by ~$70,000

3. Reduce Credit Card Limits

Cancel or reduce limits before applying.

Example:

• Credit card 1: $12,000 limit (unused) → Cancel
• Credit card 2: $18,000 limit → Reduce to $5,000
• Frees up: $750/month (assumed minimum repayments)
• Increases borrowing capacity by ~$116,000

Process:

• Call credit card provider
• Request limit reduction or cancellation
• Wait 30 days for update on credit file
• Apply for home loan

4. Joint Applications

Combine incomes with partner or family member.

Example:

• Person A: $100,000 income, can borrow $500,000
• Person B: $80,000 income, can borrow $400,000
• Joint: $180,000 combined, can borrow $900,000+

Caution: Joint income isn't always additive due to:

• Combined living expenses (only slightly lower than two separate households)
• Dependents
• Combined debts

Typical multiplier:

• Single borrower: 5-6x income
• Couple: 5-6x combined income (not quite double)

5. Reduce Unnecessary Expenses

While HEM sets a floor, excessive discretionary spending can hurt.

Red flags for lenders (reviewing bank statements):

• Gambling: $500+/month
• Frequent Afterpay/ZIP purchases
• Expensive restaurant/entertainment spending
• Alcohol/tobacco spending

Strategy:

• Clean up bank statements 3-6 months before applying
• Reduce discretionary spending to under $1,000/month
• Show consistent savings pattern

6. Second Job or Side Income

Additional income sources can count if stable.

Lenders may accept:

• Part-time second job (with 3+ months history)
• Rental income from investment property (80% counted)
• Consistent overtime (2+ year history)
• Business income (2+ years tax returns)

Example:

• Main job: $85,000
• Side gig (Uber, consulting): $15,000/year (with 2+ years history)
• Total income: $100,000 (if lender accepts side income)
• Borrowing capacity: +$75,000

Income Types and How They're Assessed

1. PAYG Salary (Easiest)

Assessed at: 100% of gross income

Evidence required:

• Recent payslips (2-3 months)
• Employment contract or letter
• Tax return (sometimes)

Bonus/commission:

• Counted at 80-100% if consistent 2+ year history
• Recent bonuses only: May be excluded

2. Self-Employed Income (Harder)

Assessed at: 100% of net profit (after business expenses)

Evidence required:

• 2 years tax returns (full financials)
• Business bank statements (6-12 months)
• Accountant letter confirming income

Challenges:

• Tax deductions reduce assessable income
• Variable income year-to-year
• Lenders average last 2 years (or take lower year)

Example:

• Year 1 net profit: $95,000
• Year 2 net profit: $78,000
• Lender uses: $78,000 (lower year)
• Borrowing capacity: Based on $78,000, not $95,000

Strategies:

• Apply in a strong income year
• Minimize business expense claims year before applying
• Use low-doc loan (higher rate, but accepts less documentation)

3. Rental Income

Assessed at: 70-80% of rent (lender assumes vacancy/costs)

Example:

• Rental income: $2,400/month
• Lender counts: $1,920/month (80%)
• Only $1,920 added to income

Required evidence:

• Lease agreement
• Bank statements showing rent received
• Rental ledger from agent

4. Investment Income (Shares/Dividends)

Assessed at: 80-100% if consistent

Evidence:

• 2 years tax returns showing dividend income
• Investment portfolio statements

Challenge: Variable income year-to-year may be excluded or reduced.

5. Centrelink Payments

Varies by payment type:

• Family Tax Benefit: Often counted 100%
• Child Support: Counted 100%
• Disability Support Pension: Counted 80-100%
• JobSeeker: Usually NOT counted (temporary)

Example:

• Salary: $75,000
• Family Tax Benefit: $8,000/year
• Child support: $12,000/year
• Total assessable: $95,000

Lender-Specific Serviceability Differences

Different lenders have different serviceability policies—some are more generous than others.

Example: $120,000 income, $2,800 expenses

| Lender | Test Rate | HEM Benchmark | Max Borrowing | |--------|-----------|---------------|---------------| | Big 4 Bank A | 9.1% | $2,700/month | $580,000 | | Big 4 Bank B | 9.3% | $2,900/month | $540,000 | | Non-Bank Lender | 8.8% | $2,500/month | $640,000 | | Credit Union | 9.5% | $3,000/month | $520,000 |

Difference: Up to $120,000 in borrowing capacity for same applicant!

Why differences exist:

• Risk appetite (conservative vs aggressive)
• Funding costs (banks vs non-banks)
• Target customers (high-income vs mass-market)

Broker value: NIK Finance brokers know which lenders have the most generous serviceability for your profile—saving you from rejected applications.

Serviceability vs LVR

Passing serviceability doesn't mean automatic approval—you also need adequate deposit.

Two tests to pass:

1. Serviceability Test

Can you afford repayments?

• Income: $110,000
• Serviceability: Can borrow $550,000

2. LVR Test

Do you have enough deposit?

• Deposit: $80,000
• Can borrow at 80% LVR on: $400,000 property ($80K deposit = 20%)
• Can borrow at 90% LVR on: $800,000 property (but would need $80K for 10%)

Limiting factor: Whichever is lower.

Example:

• Serviceability says: Can borrow $650,000
• Deposit is $70,000 (10% of $700,000)
• LVR limits you to: $630,000 loan (on $700K property)
• Even though you can afford more, deposit is limiting

Solution: Save larger deposit or use guarantor.

Common Serviceability Mistakes

1. Not Declaring All Expenses

Mistake:

• Declare expenses: $1,500/month (just rent + utilities)
• Reality: Spend $3,500/month (rent, utilities, groceries, transport, entertainment)

Result:

• Lender uses HEM benchmark: $2,700/month
• Or finds evidence in bank statements
• Application delayed or borrowing reduced

Fix: Be honest—lender will verify via bank statements.

2. Applying with Maximum Credit Limits

Mistake:

• Have 3 credit cards: $15K, $12K, $8K = $35K total limits
• Balances: $0 (paid off monthly)
• Think: "I have no debt!"

Reality:

• Lender assumes: $1,050/month minimum repayments (3% of $35K)
• Reduces borrowing capacity: ~$162,000

Fix: Cancel unused cards, reduce limits 60-90 days before applying.

3. Job Change Right Before Applying

Mistake:

• Change jobs 2 weeks before loan application
• New job pays more, think it will help

Reality:

• Lender requires 3-6 months employment history (or passed probation)
• Application rejected or delayed

Fix: Apply before changing jobs, or wait 3-6 months in new role.

4. Ignoring Partner's Debts in Joint Application

Mistake:

• Apply jointly to combine incomes
• Forget partner has $25,000 personal loan ($650/month)

Reality:

• Combined income: $180,000 (great!)
• Partner's debt: $650/month reduces borrowing by ~$100,000
• Net benefit less than expected

Fix: Consider if joint application is better than single, or pay off partner's debts first.

5. Using Gifted Deposit Without Documentation

Mistake:

• Parents gift $50,000 for deposit
• Can't prove where it came from
• Lender sees sudden $50K in account

Reality:

• Lender suspects undisclosed loan
• Assumes $50K is debt with $1,500/month repayments
• Reduces serviceability by ~$232,000

Fix: Get statutory declaration from parents stating gift (not loan), provide paper trail.

How to Calculate Your Serviceability

Step-by-Step Calculation

Step 1: Calculate Net Income

• Gross income: $120,000/year ($10,000/month)
• Tax: ~$2,320/month
• HECS: $500/month
• Net income: $7,180/month

Step 2: Add Other Income

• Rental income: $2,000/month × 80% = $1,600/month
• Total assessable income: $8,780/month

Step 3: Calculate Expenses

• HEM benchmark: $2,500/month
• Car loan: $520/month
• Credit cards (limits $20K): $600/month assumed
• Investment property costs (net): $800/month
• Total expenses: $4,420/month

Step 4: Calculate Surplus

• Income: $8,780
• Expenses: $4,420
• Surplus: $4,360/month

Step 5: Apply Test Rate (9.2%)

• Surplus: $4,360/month
• At 9.2% rate, can afford repayment of: $4,360/month
• Maximum loan: ~$675,000

Step 6: Verify with Lender Calculator Use online calculators from major banks (adjust for your lender's test rate).

Online Calculators

Most accurate:

• CommBank Borrowing Power Calculator
• Westpac Borrowing Power Calculator
• ANZ Home Loan Borrowing Calculator

Broker tools (more comprehensive):

• Speak to a NIK Finance broker who uses professional serviceability software accounting for:
  • Specific lender policies
  • Latest test rates
  • Your exact income/expense profile
  • Optimal lender for your situation

Improving Serviceability: Action Plan

90 days before applying:

• [ ] Check credit score (dispute any errors)
• [ ] Review all credit card limits
• [ ] Cancel unused cards
• [ ] Reduce limits on active cards to lowest needed
• [ ] Clean up bank statements (reduce discretionary spending)
• [ ] Stop gambling, Afterpay, frequent cash withdrawals

60 days before:

• [ ] Pay off small debts (personal loans, car loans if close to paid)
• [ ] Gather 2 years tax returns (self-employed)
• [ ] Confirm employment stability (pass probation if new job)
• [ ] Get rental income documentation (if applicable)
• [ ] Build consistent savings pattern ($1,000-$2,000/month)

30 days before:

• [ ] Request payslips, employment letter
• [ ] Finalize deposit amount (including genuine savings proof)
• [ ] Get gift documentation if using family assistance
• [ ] Pre-approval application with broker
• [ ] Compare lenders for best serviceability

At application:

• [ ] Declare all income accurately
• [ ] Declare all expenses honestly
• [ ] Provide clean 3-6 months bank statements
• [ ] Disclose all debts and liabilities
• [ ] Explain any irregular deposits/withdrawals

Final Thoughts

Serviceability is the gatekeeper to your borrowing capacity—even more important than your deposit in many cases.

Key principles:

• Income is king: Every $1,000/month extra income ≈ $155,000 more borrowing
• Debts are poison: Every $500/month debt reduces borrowing by ~$77,000
• Credit limits = debt: Reduce all limits 60-90 days before applying
• HEM is the floor: You can't claim lower expenses than benchmarks
• Buffer protects you: 3% test rate ensures you survive rate rises

Typical borrowing multiples:

• PAYG employee: 5-6x gross income
• Self-employed: 4-5x net income (after business expenses)
• With debts/dependents: 3-4x income
• With clean profile: 6-7x income (some non-banks)

Example outcomes:

• $100,000 income, no debts, no kids: Borrow $550,000-$650,000
• $100,000 income, $800/month debts, 2 kids: Borrow $320,000-$400,000
• $180,000 joint income, no debts, no kids: Borrow $1,000,000-$1,200,000

Before you apply:

• Calculate your own serviceability using online calculators
• Clear or reduce debts (especially credit cards)
• Stabilize employment (6+ months in role)
• Build 3-6 months of clean bank statements
• Speak to a NIK Finance broker to find lenders with the best serviceability for your profile

The power of preparation:

• Unprepared applicant: $95K income, $30K credit limits, $18K car loan = Borrow $420,000
• Prepared applicant: Same $95K income, $5K credit limit, car loan paid off = Borrow $580,000
• Difference: $160,000 more borrowing (38% increase) just from optimizing debts and limits

Serviceability is within your control—spend 90 days preparing, and you can increase your borrowing capacity by $100,000-$200,000 or more.