Split Loan

Split Loan divides your home loan into two or more portions—typically part fixed rate and part variable rate. This strategy balances the certainty of fixed repayments with the flexibility and potential savings of variable rates.

How Split Loans Work

Instead of choosing fixed OR variable, you get both.

Common split: 50/50

• $600,000 total loan
• $300,000 fixed at 5.89% for 3 years
• $300,000 variable at 6.19%

Repayments:

• Fixed portion: $1,765/month (locked)
• Variable portion: $1,825/month (can change)
• Total: $3,590/month

Benefits:

• If rates rise: Fixed portion protects you
• If rates fall: Variable portion reduces
• Partial access to offset accounts (on variable portion)
• Make extra repayments on variable portion

Common Split Combinations

50/50 Split (Most Popular)

Structure:

• 50% fixed (3-5 years)
• 50% variable

Best for:

• First home buyers wanting some certainty
• Moderate risk tolerance
• Balanced approach

Example: $700,000 loan

• $350,000 fixed at 5.79% for 4 years
• $350,000 variable at 6.09%
• If rates rise 1%: Only half your loan affected
• Fixed portion: $2,053/month (unchanged)
• Variable portion: $2,183/month (vs $2,127 before rise)
• Extra cost: $56/month (vs $210/month if fully variable)

70/30 Split (Conservative)

Structure:

• 70% fixed
• 30% variable

Best for:

• Risk-averse borrowers
• Expecting rate rises
• Want maximum certainty

Example: $650,000 loan

• $455,000 fixed at 5.89%
• $195,000 variable at 6.19%
• Majority protected from rate rises
• Still have $195K variable for extra repayments and offset

30/70 Split (Aggressive)

Structure:

• 30% fixed
• 70% variable

Best for:

• Risk-tolerant borrowers
• Expecting rate falls
• Want flexibility to pay off quickly

Example: $800,000 loan

• $240,000 fixed at 5.79%
• $560,000 variable at 6.09%
• Large variable portion: Make big extra repayments
• Offset account on $560K (maximize interest savings)
• Small fixed portion: Hedge against rate rises

Why Use a Split Loan

1. Hedge Against Rate Movements

Uncertain interest rate environment:

• Rates might rise: Fixed portion protects you
• Rates might fall: Variable portion benefits

Example (rates rise 1.5%):

• Fully variable $600K loan: +$540/month
• 50/50 split: +$270/month (half the impact)
• Savings from split: $270/month

Example (rates fall 0.75%):

• Fully fixed $600K: No benefit (locked in)
• 50/50 split: -$135/month (variable portion reduces)
• Still capture some rate fall benefit

2. Maintain Flexibility

Fixed loan restrictions:

• No extra repayments (or limited to $10K-$30K/year)
• No offset account
• High break costs if exiting early

Split loan flexibility:

• Make unlimited extra repayments on variable portion
• Offset account on variable portion
• If you need to sell/refinance, only pay break costs on fixed portion

Example:

• $700,000 split: $400K fixed + $300K variable
• Want to pay off $80K from inheritance
• Apply all $80K to variable portion (no penalty)
• Variable portion now $220K
• Total loan: $620K
• Paid down $80K without break fees

3. Access to Offset Account

Best of both worlds:

• Fixed rate: Certainty on portion
• Variable rate: Offset account on variable portion

Example: $650,000 split (50/50)

• $325K fixed at 5.79%
• $325K variable at 6.09% with offset account
• Offset balance: $60,000
• Effective variable balance: $265K
• Save interest on $60K while fixed portion remains protected

Annual savings:

• $60K in offset at 6.09% = $3,654/year saved
• Still have fixed rate certainty on $325K

4. Manage Cashflow Risk

Smooth rate transition:

• Fixed portion expires at different times
• Gradual exposure to rate changes

Example: Staggered fixing

• Year 1: Fix 50% for 2 years, 50% for 4 years
• Year 3: First fixed portion expires (50% exposed to new rates)
• Year 5: Second portion expires (100% exposed)
• Avoid cliff-edge risk (all fixed expiring at once)

Real-World Examples

Example 1: First Home Buyer (Success)

Profile:

• Couple, age 30 and 32
• Loan: $620,000
• Strategy: 60/40 split

Structure:

• $372,000 fixed at 5.69% for 4 years
• $248,000 variable at 5.99% with offset

Year 1-4 (rates rise to 7.5%):

• Fixed portion: $2,180/month (protected)
• Variable portion: $1,730/month (increased from $1,500)
• Saved $300/month vs fully variable

Offset account:

• Built up $45,000 in offset (variable portion)
• Saves $225/month in interest
• Net variable cost: $1,505/month

Year 5 (fixed expires, rates at 6.8%):

• Refix 50% at 6.39% for 3 years
• Variable portion: $203K (paid down from $248K)
• Smooth transition (avoided full exposure)

Outcome:

• Protected during rate rise cycle (2022-2024)
• Maintained offset flexibility
• Paid down extra $45K on variable portion
• Successful strategy

Example 2: Investor (Optimization)

Profile:

• Property investor, age 44
• Loan: $550,000 investment property
• Strategy: 30/70 split (favor variable)

Structure:

• $165,000 fixed at 6.09% for 2 years (small hedge)
• $385,000 variable at 6.39% with offset

Tax optimization:

• Offset account: $120,000 (rental income accumulated)
• Effective variable balance: $265,000
• Interest on $265K = $16,934/year (tax deductible)
• Offset saves: $7,668/year tax-free
• Minimizes taxable rental income while deducting max interest

Flexibility:

• Makes $1,500/month extra repayments on variable portion
• Paid down to $280K after 4 years
• Refinanced fully to variable at 5.89%
• Low fixed portion allowed flexibility

Example 3: Growing Family (Risk)

Profile:

• Couple with 2 young kids
• Loan: $780,000
• Strategy: 80/20 split (heavy fixed)

Structure:

• $624,000 fixed at 5.49% for 5 years (locked in low rate)
• $156,000 variable at 5.79%

Risk realized:

• Year 2: Interest rates drop to 4.8% (unexpected)
• Fixed portion: Still paying 5.49% (0.69% above market)
• Cost: $358/month more than market rate
• Over 5 years: $21,480 overpaid

Year 5: Fixed expires (rates now 6.9%)

• New fixed rate: 6.59% for 3 years
• Shock: Repayment jumps from $3,670 to $4,320
• Increase: $650/month (struggle to afford)

Lesson:

• Locked in too much (80%) for too long (5 years)
• Couldn't capitalize on rate falls
• Large jump when fixed expired
• 50/50 split would have been better

Split Loan Strategies

Strategy 1: Staggered Maturity

Fix portions at different terms to avoid all expiring at once.

Example: $700,000 loan

• $350,000 fixed for 2 years at 5.59%
• $350,000 fixed for 5 years at 6.09%

Timeline:

• Year 2: First $350K expires, refix or move to variable
• Year 5: Second $350K expires
• Spread risk over time

Benefit:

• Avoid cliff-edge (all fixed expiring in high rate environment)
• Opportunistically lock in rates at different times

Strategy 2: Offset Maximization

Large variable portion with offset, small fixed hedge.

Example: $650,000 loan

• $150,000 fixed at 5.79% (23%)
• $500,000 variable at 6.09% (77%) with $100K offset

Benefits:

• $100K offset saves $6,090/year
• Effective loan: $550K
• Fixed portion: Small hedge
• Maximize offset tax-free returns

Best for:

• High savings rate
• Offset balance growing
• Want flexibility over certainty

Strategy 3: Fixed Ladder

Fix in tranches as rates change.

Example: $750,000 loan

• Start: Fully variable at 6.29%
• Rates start rising: Fix $250K at 6.49% for 3 years
• Rates rise more: Fix another $250K at 6.79% for 4 years
• Keep $250K variable

Outcome:

• Locked in portions at different rates
• Maintained flexibility on $250K
• Average rate lower than fixing all at peak

Strategy 4: Income Protection

Fix portion equal to your minimum comfortable repayment.

Example: Income $12,000/month, comfortable paying $4,000/month

• $700,000 total loan
• Fix $600K at 5.89% = $3,525/month (protected)
• Variable $100K at 6.19% = $610/month
• Total: $4,135/month

If rates rise:

• Fixed portion unchanged
• Variable increases to $750/month (1% rise)
• Total: $4,275 (still manageable)

If you lose job:

• Can afford minimum repayments
• Protected by fixed portion

Costs and Considerations

Application Fees

Potentially doubled:

• Fixed portion: $600 application fee
• Variable portion: Separate $600 fee
• Total: $1,200 (vs $600 single loan)

Some lenders:

• Charge once for split loan
• Check before applying

Break Costs (Fixed Portion)

If you exit early:

• Variable portion: $0-$500 exit fee
• Fixed portion: $5,000-$30,000 break costs

Example:

• $600K split: $300K fixed + $300K variable
• Need to sell after 2 years (3 years left on fixed)
• Variable: $350 exit fee
• Fixed: $8,500 break cost
• Total: $8,850

vs fully fixed:

• $600K fixed: $18,000 break costs
• Split saves $9,150 (only pay break costs on half)

Offset Account Limitations

Only on variable portion:

• Can't have offset on fixed portion
• Interest savings limited to variable amount

Example:

• $700K split: $400K fixed + $300K variable with offset
• Offset balance: $80K
• Can only offset against $300K (not the $400K fixed)
• Maximum savings: $80K × 6.09% = $4,872/year

vs fully variable:

• Could offset against full $700K
• Potential savings: $80K × 6.19% × ($700K/$300K) = $11,344/year
• Give up $6,472/year in offset capacity

Complexity

Two loans to manage:

• Separate repayments (sometimes)
• Two interest rates to track
• Two expiry dates (if both fixed)

More paperwork:

• Separate loan contracts
• Separate account numbers
• Potentially two offset accounts

When to Use vs Avoid Split Loans

Use Split Loans When:

Uncertain rate environment:

• Unclear if rates will rise or fall
• Want protection both ways

Moderate risk tolerance:

• Don't want fully variable (too risky)
• Don't want fully fixed (too restrictive)

Want flexibility + certainty:

• Extra repayments on variable portion
• Offset account benefit
• Fixed repayment security

Long-term hold (7+ years):

• Benefit from multiple fixed cycles
• Offset compounds over time

Avoid Split Loans When:

Rates clearly trending:

• Rates definitely rising: Fix 100%
• Rates definitely falling: Stay 100% variable

Short-term hold (1-3 years):

• Complexity not worth it
• May pay break costs on fixed portion

Very small loan (under $300K):

• Splitting too thin (e.g., $150K each portion)
• Administrative hassle exceeds benefit

Need maximum flexibility:

• Planning to pay off quickly (inheritance, sale of asset)
• Fully variable better (no fixed portion restrictions)

Common Split Loan Questions

What's the ideal split ratio?

Most common: 50/50

• Balanced protection and flexibility
• Works in most scenarios

Adjust based on:

• Risk tolerance: 70/30 fixed if conservative
• Rate outlook: 30/70 fixed if expect falls
• Savings capacity: Higher variable if building offset

Can I change the split later?

At fixed portion expiry:

• Renegotiate split (e.g., 50/50 → 60/40)
• Adjust based on new rate environment

Before expiry:

• Usually requires refinancing (break costs)
• Not recommended mid-term

Can I have multiple fixed portions?

Yes:

• $900K loan: $300K fixed 2y + $300K fixed 4y + $300K variable
• Three separate portions
• Staggered maturities

Complexity:

• More accounts to manage
• Higher administration

Do I pay more for a split loan?

Interest rates:

• Fixed portion: Same rate as standalone fixed
• Variable portion: Same rate as standalone variable
• No rate penalty for splitting

Fees:

• Some lenders charge twice (application fee per portion)
• Others charge once
• Check before applying

Final Thoughts

Split loans offer a middle ground between fixed and variable—providing partial certainty while maintaining flexibility.

Ideal for:

• First home buyers (uncertain rate environment)
• Moderate risk tolerance (want some protection)
• Offset users (build savings while hedging)
• Long-term holders (benefit over multiple cycles)

Typical split:

• 50/50 (balanced)
• $600K loan: $300K fixed 3y + $300K variable with offset
• Fixed: $1,760/month (certainty)
• Variable: $1,825/month (flexibility)
• Offset $50K: Save $250/month
• Net variable cost: $1,575/month

Expected outcomes:

• Protected from rate rises (fixed portion buffers impact)
• Benefit from rate falls (variable portion reduces)
• Offset tax-free savings ($3,000-$6,000/year)
• Flexibility to pay down variable portion
• Balanced risk/reward

Before splitting:

• Review current rate environment
• Determine risk tolerance
• Calculate offset benefit (variable portion)
• Compare single vs split fees
• Speak to NIK Finance broker about optimal split ratio

Common mistake to avoid:

• Don't fix too much (80%+) for too long (5 years)
• Leaves little flexibility
• If rates fall, you overpay significantly
• Stick to 50/50 or 60/40 if unsure

A well-structured split loan (50/50, 3-year fixed portion, variable with offset) provides excellent balance—protecting you from rate rises while maintaining flexibility to pay down debt and build offset savings worth $5,000-$10,000/year.