Key takeaways
- In the USA it's possible to fix a mortgage for 20 or 30 years. This is not the case in Australia, where fixed rate terms are between 1 and 5 years.
 - If you really do want to fix for the long term, there are a handful of 10 year fixed rate loans. But these loans have very high rates.
 - Fixing for the long term in Australia also limits your options if you want to sell or refinance because of the high break fees.
 
What is a 30-year fixed rate home loan?
A fixed rate home loan has a flat interest rate that doesn't change for a set amount of time. In Australia that's usually a term of 1 to 5 years.
In countries like the USA, 30-year fixed rate mortgages are very popular. But you can't get 30-year fixed rate home loans in Australia.
Why aren't 30-year fixed rates offered in Australia?
The main reason 30-year fixed rates don't exist in Australia is the lack of a well-developed secondary mortgage market.
In the United States, home loans are guaranteed by two government entities: the Federal National Mortgage Association, or Fannie Mae, and the Federal Home Loan Mortgage Corporation, or Freddie Mac.
These government agencies buy home loans from lenders, bundle them as securities and then sell the securities to investors. The government assumes the risk for the home loans.
In Australia there's no equivalent protection. So long term fixed rate loans represent a risk to lenders. If rates change dramatically, a bank could be stuck with a 30-year loan term that's no longer favourable to them.
Whereas with a variable rate loan, lenders can simply increase or decrease the rate borrowers get in line with market movements.
What is the longest fixed mortgage rate in Australia?
10 years is the longest fixed home loan rate term on offer in Australia. And there's only 2 lenders that offer 10-year fixed rate home loans, so they're very rare.
These home loans have much higher interest rates than other Australian home loans too.
The risks of lengthy fixed term home loans
Most people fix their home loan rate because they want to know exactly how much they have to pay each month and forget about rate rises. But when you fix for a very long time lenders charge higher interest rates. It gets very expensive.
And there are other problems with long fixed terms.
Lack of flexibility and break costs
If you decide you want to sell your property or refinance your home loan, a long fixed term makes that harder. This is because lenders charge a break fee when you exit a fixed rate home loan before the fixed term ends.
The break fee is higher if your fixed rate is longer. It can end up costing you thousands of dollars.
According to NAB, this is because of how fixed rate loans are funded. The lender's funding costs remain fixed, so if you repaid the loan early the lender would lose money.
Fixed rate break costs are "a kind of penalty for changing a fixed rate loan early, and it's designed to protect the lender from losses."
Long term fixed rate home loans
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