Fixed vs Variable vs Split Home Loan (2025-26)
The three main rate structures for Australian home loans. Each is a different bet on rate direction and a different trade-off between certainty and flexibility.
Quick Answer
If you can absorb rate rises and want maximum flexibility: Variable with offset.
If rate-rise risk would break your budget or you're on fixed income: Fixed 2-3 years.
If you want both (most popular): Split 60/40 fixed/variable. Keep the offset on the variable portion.
Feature Comparison
| Feature | Fixed | Variable | Split |
|---|---|---|---|
| Rate certainty | Locked for 1–5 yrs | Moves with RBA cash rate | Partial (fixed portion locked) |
| Benefit from rate cuts | ❌ No — locked | ✅ Yes — immediately | Partial (variable portion only) |
| Protection from rate rises | ✅ Full (during fixed term) | ❌ No | Partial (fixed portion only) |
| Extra repayments | Limited (typically $10–20k/yr cap) | Unlimited, no fees | Unlimited on variable side |
| 100% offset account | Rarely available | Standard feature | Variable side only |
| Redraw of extra payments | Limited or unavailable | Standard, sometimes fees | Variable side only |
| Break costs (early exit) | Can be $10k–$50k+ if rates fall | Generally none | Only on fixed portion |
| Typical rate vs variable | 0.30–0.80% lower than variable (when banks expect rate cuts) | Baseline | Blended |
| Easier loan approval | Slightly stricter serviceability test | Standard | Standard |
| Best for | Budget certainty, expecting rate rises, fixed-income earners | Maximum flexibility, expecting rate cuts, offset users | Hedge both directions, moderate offset balance |
Rate Shock: What Could Happen
Scenario: $700,000 loan, 30-year term. Variable rate 6.10%, fixed 5.79% for 3 years.
Imagine RBA raises rates 2% over the next 12 months (variable → 8.10%).
All Fixed
Monthly: $4,098 (locked)
Protected from rise
Best in this scenario
All Variable
Monthly today: $4,242
After +2%: $5,185
+$943/mo shock
60% Fixed / 40% Variable
Monthly today: $4,170
After +2%: $4,536
+$365/mo (manageable)
Inverse scenario (rates fall 2%): All Variable wins by $943/mo. Split saves $565/mo. All Fixed misses out on cuts entirely.
When Each Structure Wins
Choose Fixed When
- You have a tight budget and can't absorb a 2%+ rate rise
- You're on fixed-income (retiree, pension)
- You think rates are at cycle bottoms and about to rise
- You're not planning to sell or refinance during the fixed term
- You don't have a big offset balance (so flexibility doesn't matter)
- You value sleep at night more than maximum savings
Choose Variable When
- You have $20k+ to keep in offset (huge interest savings)
- You can absorb rate rises without budget pain
- You think rates are near cycle tops and about to fall
- You may sell or refinance within 2-3 years
- You want to make large extra repayments without restrictions
- Statistically, variable wins ~70% of the time historically (RBA tends to cut more than raise in long run)
Choose Split When
- You want flexibility on some of the loan and certainty on the rest
- You have an offset balance to deploy on the variable side
- You can't decide which way rates will move (almost everyone)
- Most common ratios: 50/50 (balanced), 60/40 fixed/variable (defensive), 40/60 (offset users), 70/30 (very defensive)
Common Mistakes
- Fixing during peak rates. Banks raise fixed rates BEFORE the RBA acts. If fixed rate is much higher than current variable, the market expects cuts — don't lock in the peak.
- Forgetting break costs. Selling or refinancing during a fixed term can cost $10k-$50k. Only fix if you're committed to staying.
- Splitting too far in one direction. 90% fixed defeats the purpose; might as well go full fixed. Same for the other extreme.
- Letting fixed roll to standard variable. When fixed expires, banks roll you onto SVR (often higher than what new customers get). Always negotiate or refinance.
Related Tools
Mortgage Repayment Calculator
Standard amortisation
Split Loan Calculator
Test rate-shock scenarios
Offset Account Calculator
Interest savings from offset
Refinance Calculator
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Disclaimer: General information only, not personal advice. Compare offers and negotiate based on your individual circumstances. A mortgage broker can help compare 20+ lenders in one application.