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Calculator Assumptions and Disclaimers

    Our calculator estimates your risk of mortgage stress by taking the following steps:

  • Breaking down your entered annual income into approximate monthly income by dividing the total by 12.
  • Breaking down your partner’s entered annual income into approximate monthly income by dividing the total by 12.
  • Comparing your entered monthly repayment to your approximate monthly income (yours plus you partner’s).
  • Displaying the result as a percentage on the table – results higher than 30 per cent are assumed to be in mortgage stress.
  • All calculations are estimates – they are not guarantees that you’ll be able to aford a particular home loan repayment and are not pre-qualifcations or pre-approvals for borrowing.
  • These calculations are only accurate for the information entered, and do not take into account future changes to you/your partner’s income, your home loan interest rate, or your mortgage repayments.
  • Diferent lenders may use diferent serviceability criteria to measure the risk of mortgage stress when you apply for a home loan.
  • Results are calculated based on pre-tax income and do not take any other living expenses into account.
  • Some people on high incomes may be comfortable paying 30% or more on housing or some people may have a solid bufer or back-up plan to make them comfortable taking on a larger debt.
  • The calculator is for information purposes only. Any advice is general and has not taken into account your personal circumstances.Read our full disclaimer.

What do the mortgage stress calculator results mean?

The mortgage stress bar shows visually how close you could be to experiencing mortgage stress.

  • Stress Free Zone: You are spending less than 20 per cent of your income on home loan repayments. You are not in mortgage stress and are not likely to be in mortgage stress for some time.
  • Stress Danger Zone: You spend between 20 per cent and 30 per cent of your income on home loan repayments. You are close to the mortgage stress tipping point, but are not yet in mortgage stress. 
  • Mortgage Stress Zone: You are spending 30 per cent or more of your income on mortgage repayments. You are already in mortgage stress.

What is mortgage stress?

You may experience mortgage stress when the cost of your home loan makes it harder to afford your other household expenses, such as food and utilities. 

This can leave you in a vulnerable position if your financial situation changes, such as if your mortgage repayments increase (e.g. your bank increases its variable interest rates), your household expenses increase (e.g. you and your spouse have a child) or your household income decreases (e.g. you experience a pay cut or lose your job).

A bank or mortgage lender may decline your mortgage application if they believe the cost of repayments may put you at risk of mortgage stress. 

Different lenders define mortgage stress differently, but a common benchmark (used by our calculator) is that if 30 per cent or more of your pre-tax income is spent on home loan repayments, you’re considered to be in mortgage stress.

Why are some Australians experiencing mortgage stress?

Between high levels of household debt, low wages growth and high property prices, many Australians are under financial pressure and at risk of falling victim to mortgage stress.

First home buyers are often at risk, particularly those who have recently purchased property in the real estate markets of Sydney and Melbourne. However, the threat of mortgage stress remains real for anyone with a mortgage.

While Australia’s cash rate has been at record lows, there’s no guarantee that interest rates won’t begin to climb upwards in the future, putting more pressure on household finances. As interest rates increase, more Australians may experience mortgage stress.

By using a mortgage stress calculator, you can assess your household situation, and plan ahead for any future interest rate rises.

How can I avoid mortgage stress?

If the mortgage stress calculator shows you are in mortgage stress or have reached the danger zone, now may be a good time to start assessing your financial situation.

Two of the simplest ways to avoid mortgage stress are to either increase your income or lower your home loan repayments. While getting a pay rise may be a challenge, you may be able to lower your mortgage repayments by switching to a more competitive lender.

First, start by comparing your current interest rate to other lenders on the market to see if you can get a better deal. Look closely at the monthly repayments and use our switch and save calculator to see how much you could save by refinancing.

However, home loans shouldn’t be chosen on rate alone. Weigh up each home loan offer and consider which features and benefits may suit your personal needs. Are you happy with a no-frills home loan with a low rate? Or would you personally benefit from extras such as an offset account?

There are lots of factors to consider when you are refinancing, but when you find a great deal, the long-term benefits can far outweigh the hassle of the paperwork.

If our calculator shows that you’re in mortgage stress, switching to a more competitive lender could be the lifeline you need to reduce the pressure on your household budget.

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Frequently asked questions

How does a mortgage calculator work?

A mortgage calculator is an extremely helpful tool when planning to take out a home loan and working out the costs. Although each mortgage calculator you come across may be slightly different, most will help you estimate how much your repayments will be. The calculator will often also show you the difference in repayments if you repay weekly, monthly or fortnightly. 

To calculate these figures, you’ll be asked to enter a few details. These include the amount you plan to borrow, whether you’re an owner-occupier or an investor, the proposed interest rate and the home loan term. It will also often show you the total interest you’ll be charged and the total amount you’ll repay over the life of the loan.  

Understanding how the mortgage calculator works, helps you to use it to see how different loan amounts, interest rates and terms affect your repayments. This can then help you choose a home loan that you can repay comfortably and save on interest costs. The mortgage calculator lets you compare the benefits and costs of home loans from different lenders to help you make a more informed choice. Use a mortgage calculator to help identify which home loan is most suitable for your requirements and financial situation.

How do you calculate how much you could save with a lower rate?

To work out how much you could save, we run the home loan details you’ve provided through our database, and search for similar home loan options that we think would be suitable for you.

We then calculate the costs of these loan options over 15 years (to keep our calculations consistent) and compare them to the cost calculations for your current home loan.

How can I calculate interest on my home loan?

You can calculate the total interest you will pay over the life of your loan by using a mortgage calculator. The calculator will estimate your repayments based on the amount you want to borrow, the interest rate, the length of your loan, whether you are an owner-occupier or an investor and whether you plan to pay ‘principal and interest’ or ‘interest-only’.

If you are buying a new home, the calculator will also help you work out how much you’ll need to pay in stamp duty and other related costs.

How much money can I borrow for a home loan?

Tip: You can use RateCity how much can I borrow calculator to get a quick answer.

How much money you can borrow for a home loan will depend on a number of factors including your employment status, your income (and your partner’s income if you are taking out a joint loan), the size of your deposit, your living expenses and any other debt you might hold, including credit cards. 

A good place to start is to work out how much you can afford to make in monthly repayments, factoring in a buffer of at least 2 – 3 per cent to allow for interest rate rises along the way. You’ll also need to factor in additional costs that come with purchasing a property such as stamp duty, legal fees, building inspections, strata or council fees.

If you are planning on renting the property, you can factor in the expected rental income to help offset the mortgage, but again it’s prudent to add a significant buffer to allow for rental management fees, maintenance costs and short periods of no rental income when tenants move out. It’s also wise to factor in changes in personal circumstances – the typical home loan lasts for around 30 years and a lot can happen between now and then.

What is mortgage stress?

Mortgage stress is when you don’t have enough income to comfortably meet your monthly mortgage repayments and maintain your lifestyle. Many experts believe that mortgage stress starts when you are spending 30 per cent or more of your pre-tax income on mortgage repayments.

Mortgage stress can lead to people defaulting on their loans which can have serious long term repercussions.

The best way to avoid mortgage stress is to include at least a 2 – 3 per cent buffer in your estimated monthly repayments. If you could still make your monthly repayments comfortably at a rate of up to 8 or 9 per cent then you should be in good position to meet your obligations. If you think that a rate rise would leave you at a risk of defaulting on your loan, consider borrowing less money.

If you do find yourself in mortgage stress, talk to your bank about ways to potentially reduce your mortgage burden. Contacting a financial counsellor can also be a good idea. You can locate a free counselling service in your state by calling the national hotline: 1800 007 007 or visiting www.financialcounsellingaustralia.org.au.

What percentage of income should my mortgage repayments be?

As a general rule, mortgage repayments should be less than 30 per cent of your pre-tax income to avoid falling into mortgage stress. When mortgage repayments exceed this amount it becomes hard to budget for other living expenses and your lifestyle quality may be diminished.

How much debt is too much?

A home loan is considered to be too large when the monthly repayments exceed 30 per cent of your pre-tax income. Anything over this threshold is officially known as ‘mortgage stress’ – and for good reason – it can seriously affect your lifestyle and your actual stress levels.

The best way to avoid mortgage stress is by factoring in a sizeable buffer of at least 2 – 3 per cent. If this then tips you over into the mortgage stress category, then it’s likely you’re taking on too much debt.

If you’re wondering if this kind of buffer is really necessary, consider this: historically, the average interest rate is around 7 per cent, so the chances of your 30 year loan spending half of its time above this rate is entirely plausible – and that’s before you’ve even factored in any of life’s emergencies such as the loss of one income or the arrival of a new family member.

How do I calculate monthly mortgage repayments?

Work out your mortgage repayments using a home loan calculator that takes into account your deposit size, property value and interest rate. This is divided by the loan term you choose (for example, there are 360 months in a 30-year mortgage) to determine the monthly repayments over this time frame.

Over the course of your loan, your monthly repayment amount will be affected by changes to your interest rate, plus any circumstances where you opt to pay interest-only for a period of time, instead of principal and interest.

Cash or mortgage – which is more suitable to buy an investment property?

Deciding whether to buy an investment property with cash or a mortgage is a matter or personal choice and will often depend on your financial situation. Using cash may seem logical if you have the money in reserve and it can allow you to later use the equity in your home. However, there may be other factors to think about, such as whether there are other debts to pay down and whether it will tie up all of your spare cash. Again, it’s a personal choice and may be worth seeking personal advice.

A mortgage is a popular option for people who don’t have enough cash in the bank to pay for an investment property. Sometimes when you take out a mortgage you can offset your loan interest against the rental income you may earn. The rental income can also help to pay down the loan.

When does Commonwealth Bank charge an early exit fee?

When you take out a fixed interest home loan with the Commonwealth Bank, you’re able to lock the interest for a particular period. If the rates change during this period, your repayments remain unchanged. If you break the loan during the fixed interest period, you’ll have to pay the Commonwealth Bank home loan early exit fee and an administrative fee.

The Early Repayment Adjustment (ERA) and Administrative fees are applicable in the following instances:

  • If you switch your loan from fixed interest to variable rate
  • When you apply for a top-up home loan
  • If you repay over and above the annual threshold limit, which is $10,000 per year during the fixed interest period
  • When you prepay the entire outstanding loan balance before the end of the fixed interest duration.

The fee calculation depends on the interest rates, the amount you’ve repaid and the loan size. You can contact the lender to understand more about what you may have to pay. 

Which mortgage is the best for me?

The best mortgage to suit your needs will vary depending on your individual circumstances. If you want to be mortgage free as soon as possible, consider taking out a mortgage with a shorter term, such as 25 years as opposed to 30 years, and make the highest possible mortgage repayments. You might also want to consider a loan with an offset facility to help reduce costs. Investors, on the other hand, might have different objectives so the choice of loan will differ.

Whether you decide on a fixed or variable interest rate will depend on your own preference for stability in repayment amounts, and flexibility when it comes to features.

If you do not have a deposit or will not be in a financial position to make large repayments right away you may wish to consider asking a parent to be a guarantor or looking at interest only loans. Again, which one of these options suits you best is reliant on many factors and you should seek professional advice if you are unsure which mortgage will suit you best.

What happens to your mortgage when you die?

There is no hard and fast answer to what will happen to your mortgage when you die as it is largely dependent on what you have set out in your mortgage agreement, your will (if you have one), other assets you may have and if you have insurance. If you have co-signed the mortgage with another person that person will become responsible for the remaining debt when you die.

If the mortgage is in your name only the house will be sold by the bank to cover the remaining debt and your nominated air will receive the remaining sum if there is a difference. If there is a turn in the market and the sale of your house won’t cover the remaining debt the case may go to court and the difference may have to be covered by the sale of other assets.  

If you have a life insurance policy your family may be able to use some of the lump sum payment from this to pay down the remaining mortgage debt. Alternatively, your lender may provide some form of mortgage protection that could assist your family in making repayments following your passing.

How long should I have my mortgage for?

The standard length of a mortgage is between 25-30 years however they can be as long as 40 years and as few as one. There is a benefit to having a shorter mortgage as the faster you pay off the amount you owe, the less you’ll pay your bank in interest.

Of course, shorter mortgages will require higher monthly payments so plug the numbers into a mortgage calculator to find out how many years you can potentially shave off your budget.

For example monthly repayments on a $500,000 over 25 years with an interest rate of 5% are $2923. On the same loan with the same interest rate over 30 years repayments would be $2684 a month. At first blush, the 30 year mortgage sounds great with significantly lower monthly repayments but remember, stretching your loan out by an extra five years will see you hand over $89,396 in interest repayments to your bank.

What are the features of home loans for expats from Westpac?

If you’re an Australian citizen living and working abroad, you can borrow to buy a property in Australia. With a Westpac non-resident home loan, you can borrow up to 80 per cent of the property value to purchase a property whilst living overseas. The minimum loan amount for these loans is $25,000, with a maximum loan term of 30 years.

The interest rates and other fees for Westpac non-resident home loans are the same as regular home loans offered to borrowers living in Australia. You’ll have to submit proof of income, six-month bank statements, an employment letter, and your last two payslips. You may also be required to submit a copy of your passport and visa that shows you’re allowed to live and work abroad.

How to break up with your mortgage broker

If you find a mortgage broker giving you generic advice or trying to sell you a competitive offer from an unsuitable lender, you might be better off  breaking up with the mortgage broker and consulting someone else. Breaking up with a mortgage broker can be done over the phone, or via email. You can also raise a complaint, either with the broker’s aggregator or with the Australian Financial Complaints Authority as necessary.

As licensed industry professionals, mortgage brokers have the responsibility of giving you accurate advice so that you know what to expect when you apply for a home loan. You may have approached the mortgage broker, for instance, because you have questions about the terms of a home loan a lender offered you. 

You should remember that mortgage brokers are obliged by law to act in your best interests and as part of complying with The Australian Securities and Investments Commission’s (ASIC) regulations. If you feel you didn’t get the right advice from the mortgage broker, or that you lost money as a result of accepting the broker’s suggestions regarding a lender or home loan offer, you can file a complaint with the ASIC and seek compensation. 

When you first speak to a mortgage broker, consider asking them about their Lender Panel, which is the list of lenders they usually recommend and who may pay them a commission. This information can help you decide if the advice they give you has anything to do with the remuneration they may receive from one or more lenders.

How much are repayments on a $250K mortgage?

The exact repayment amount for a $250,000 mortgage will be determined by several factors including your deposit size, interest rate and the type of loan. It is best to use a mortgage calculator to determine your actual repayment size.

For example, the monthly repayments on a $250,000 loan with a 5 per cent interest rate over 30 years will be $1342. For a loan of $300,000 on the same rate and loan term, the monthly repayments will be $1610 and for a $500,000 loan, the monthly repayments will be $2684.

What are the responsibilities of a mortgage broker?

Mortgage brokers act as the go-between for borrowers looking for a home loan and the lenders offering the loan. They offer personalised advice to help borrowers choose the right home loan for their needs.

In Australia, mortgage brokers are required by law to carry an Australian Credit License (ACL) if they offer credit assistance services. Which is the legal term for guidance regarding the different kinds of credit offered by lenders, including home loan mortgages. They may not need this license if they are working for an aggregator, for instance, as a franchisee. In both these situations, they need to comply with the regulations laid down by the Australian Securities and Investments Commission (ASIC).

These regulations, which are stipulated by Australian legislation, require mortgage brokers to comply with what are called “responsible lending” and “best interest” obligations. Responsible lending obligations mean brokers have to suggest “suitable” home loans. This means loans that you can easily qualify for,  actually meet your needs, and don’t prove unnecessarily challenging for you.

Starting 1 January 2021, mortgage brokers must comply with best interest obligations in addition to responsible lending obligations. These require mortgage brokers to act in the best interest of their customers and also requires them to prioritise their customers’ interests over their own. For instance, a mortgage broker may not recommend a lender who gives them a commission if that lender’s home loan offer does not benefit that particular customer.

Will I have to pay lenders' mortgage insurance twice if I refinance?

If your deposit was less than 20 per cent of your property’s value when you took out your original loan, you may have paid lenders’ mortgage insurance (LMI) to cover the lender against the risk that you may default on your repayments. 

If you refinance to a new home loan, but still don’t have enough deposit and/or equity to provide 20 per cent security, you’ll need to pay for the lender’s LMI a second time. This could potentially add thousands or tens of thousands of dollars in upfront costs to your mortgage, so it’s important to consider whether the financial benefits of refinancing may be worth these costs.

What happens to my home loan when interest rates rise?

If you are on a variable rate home loan, every so often your rate will be subject to increases and decreases. Rate changes are determined by your lender, not the Reserve Bank of Australia, however often when the RBA changes the cash rate, a number of banks will follow suit, at least to some extent. You can use RateCity cash rate to check how the latest interest rate change affected your mortgage interest rate.

When your rate rises, you will be required to pay your bank more each month in mortgage repayments. Similarly, if your interest rate is cut, then your monthly repayments will decrease. Your lender will notify you of what your new repayments will be, although you can do the calculations yourself, and compare other home loan rates using our mortgage calculator.

There is no way of conclusively predicting when interest rates will go up or down on home loans so if you prefer a more stable approach consider opting for a fixed rate loan.

How can I avoid mortgage insurance?

Lenders mortgage insurance (LMI) can be avoided by having a substantial deposit saved up before you apply for a loan, usually around 20 per cent or more (or a LVR of 80 per cent or less). This amount needs to be considered genuine savings by your lender so it has to have been in your account for three months rather than a lump sum that has just been deposited.

Some lenders may even require a six months saving history so the best way to ensure you don’t end up paying LMI is to plan ahead for your home loan and save regularly.

Tip: You can use RateCity mortgage repayment calculator to calculate your LMI based on your borrowing profile