Split Loan Calculator
Compare a fixed/variable split to find your ideal balance between rate certainty and flexibility.
Loan Details
Total loan amount
$
$100k$3M
Loan term
years
5 yrs30 yrs
Split Ratio
Fixed portion 50%
0% fixed100% fixed
Fixed amount
$300,000
Variable amount
$300,000
Interest Rates
Fixed rate (p.a.)
%
Variable rate (p.a.)
%
Blended rate
--%
Total monthly repayment
--
Fixed portionVariable portion
Loan amount----
Interest rate----
Monthly repayment----
Total interest----
Combined total interest--
● Fixed benefits
- Rate certainty for budget planning
- Protected if rates rise
- Predictable repayments
● Variable benefits
- Extra repayments allowed
- Offset account eligible
- Benefits if rates fall
Find your ideal split
A Rovo broker can negotiate your split loan structure and find the best rates for both portions.
Estimates only. Fixed rates are illustrative -- actual rates depend on lender, loan size and LVR. Jitendra Khatri is a Credit Representative (570729) and Rovo Finance (NJ IT PTY LTD ABN 67 654 854 378) is a Corporate Credit Representative (CCR 570633) of Broker ACL Pty Ltd ACN 681 761 375 (ACL 563763).
What is a split home loan?
A split home loan divides your mortgage into two separate portions — typically one on a fixed interest rate and one on a variable rate. Rather than committing entirely to one type, a split loan gives you the stability of knowing exactly what part of your repayment will be for a set period, while keeping the flexibility of a variable loan for the remainder.For example, on a $600,000 loan you might fix $360,000 (60%) at 6.19% for two years, and leave $240,000 (40%) on a variable rate of 6.44%. You would have a blended rate of approximately 6.28%, with the variable portion available for extra repayments and offset account savings.How to use this split loan calculator
- Enter your total loan amount — use the slider or type it in directly.
- Set your loan term — the number of years for full repayment.
- Adjust the fixed/variable split — drag the slider from 0% (all variable) to 100% (all fixed).
- Enter both interest rates — your fixed rate and your variable rate. Compare quotes from your broker to find competitive rates.
- The calculator instantly shows your blended rate, total monthly repayment, and a side-by-side comparison of each portion’s repayments and total interest.
Split loan pros and cons
Benefits of a split loan
- Rate certainty — the fixed portion protects you from rate rises during the fixed period.
- Flexibility — the variable portion allows extra repayments, offset accounts, and redraw.
- Budgeting — knowing exactly what the fixed portion costs each month makes budgeting easier.
- Risk management — you don’t have to “pick a side” — you get some of both.
Things to consider
- Fixed rate break costs — if you sell or refinance before the fixed period ends, break fees can be substantial.
- Extra repayment limits — most fixed portions cap extra repayments at $10,000–$20,000 per year.
- Rate reversion — when the fixed period ends, the fixed portion usually reverts to the lender’s standard variable rate, which may be higher than what you could negotiate.
- Complexity — managing two loan portions with potentially different lenders or account structures adds administrative overhead.
What split ratio is right for me?
There’s no universally “correct” split — it depends on your circumstances:- Certainty-focused: 70–80% fixed if you’re on a tight budget and rate rises would cause stress.
- Balanced: 50–60% fixed for a blend of certainty and flexibility.
- Flexibility-focused: 30–40% fixed if you have savings in an offset account or plan to make significant extra repayments.
A Rovo Finance broker can compare split loan options across multiple lenders to find the best rates for both portions of your loan — at no cost to you.
Your next step starts here
Book a free strategy call. We’ll review your situation, discuss your lending options, and outline a clear path forward based on your goals.
FAQs
Can I change my split ratio later?
Generally no, the split is set when the loan is established. You may be able to fix additional amounts when the current fixed period expires, or at the time of refinancing.
Are split loans available for investment properties?
Yes, split loans are available for both owner-occupier and investment purposes. The same fixed/variable tradeoffs apply.
Which lenders offer split loans?
Most major Australian lenders including the big four banks, regional banks, and many credit unions offer split loan facilities. The rates and terms vary significantly, so it pays to compare options through a broker.