Mortgage Switching Calculator
Mortgage Switching Calculator See If Refinancing Actually Pays Off
This mortgage switching calculator estimates whether moving your home loan to a new lender will actually leave you better off, once the cost of switching is weighed against the savings from a lower rate. Enter the details of your existing loan and the loan you’re considering, including fees on both sides, and it returns the break-even point and the long-term net saving.
The headline rate on a refinance offer rarely tells the full story. Discharge fees, application fees, valuation costs, and registration charges all need to be subtracted from the saving before you know whether the switch is genuinely worthwhile. This calculator does that math for you. The output is an estimate based on your inputs, not a refinance offer.
The Break-Even Point and Why It Matters
The break-even point is the number of months it takes for the interest saved on the new loan to exceed the total cost of switching. Until you pass that point, you’ve spent more than you’ve saved. After you pass it, every month is net benefit.
A shorter break-even period generally signals a stronger case for switching, since you start banking the saving sooner. A longer break-even period means you need to be confident you’ll keep the new loan long enough to benefit, and if you’re likely to sell or refinance again within that window, the switch may not add up. Break-even figures also assume the rate gap holds steady, which isn’t guaranteed over years.
How to Use the Calculator
You need details from both your current loan and the loan you’re considering, pulled from your latest statement and the new lender’s quote:
Current loan amount and interest rate
Remaining term on your current loan
New loan interest rate and term
Switching costs, including discharge, application, valuation, and registration fees
Ongoing fees on each loan
The mortgage switching calculator returns the break-even point in months, the net saving across the remaining term, and the cost difference per month. Run it twice, once with your remaining term, and once with a reset term, since resetting the clock can lower your monthly repayment but extend the total interest paid.
How ADA Financial Services Helps
A mortgage switching calculator answers one question: does the math work on this specific pair of loans. A broker answers the harder one: which lender would actually approve you at a rate that makes the switch worthwhile, and whether the structure fits your full position.
ADA Financial Services compares refinance options across our lender panel and looks at the total picture rather than the headline rate. We assess how long you plan to stay in the property, model the break-even with all costs included, and compare lenders on rate, fees, and policy fit. Our fee is paid by the lender at settlement in most standard cases, disclosed in writing before any application proceeds. We’re based on the Sunshine Coast and work with borrowers across Northern Australia.
Wondering if switching your mortgage is actually worth it?
Speak with an ADA Financial Services specialist about your refinance options. We review your current loan, compare what the market is offering, and give you a clear, honest answer on whether the numbers stack up before you make a move.
This is general information only and does not constitute financial or credit advice. Speak to a licensed broker for advice tailored to your situation.
FAQs
How much rate difference do I need before switching is worth it?
There’s no single threshold, since it depends on your loan balance and the cost of switching. As a rough guide, a gap of 0.5 to 1 percentage point on a typical balance usually clears the cost within 12 to 24 months. Run your numbers through the calculator above for your specific situation.
Will my current lender try to keep me if I tell them I'm leaving?
Often, yes. Most major lenders have retention teams able to offer a better rate to existing customers who request a discharge. It’s generally worth asking your current lender what they can do before refinancing elsewhere.
How long does it actually take to switch home loans?
For most straightforward refinances, the full process takes two to four weeks from application to settlement. Complex situations involving equity releases or non-standard income documentation can take longer.
Can I switch lenders during a fixed rate period?
Yes, but break costs may apply, and they can be significant depending on how much time remains on the fixed term and how rates have moved since you locked in. Request a written break cost estimate from your current lender first, then run that number through the calculator above.
What This Loan Repayment Calculator Shows
This loan repayment calculator estimates what you will pay each month on a home loan, how much of that payment goes to interest versus principal, and the total interest charged across the full term. You enter your loan amount, interest rate, term, and repayment frequency. The output gives you a clean repayment figure to plan around and a total cost number that most borrowers underestimate.
The estimate is based on the inputs you provide and assumes a standard principal and interest loan with a constant interest rate. Real loans vary as rates move and fees apply. Treat the output as a planning figure, not a loan offer.
What This Loan Repayment Calculator Shows
This loan repayment calculator estimates what you will pay each month on a home loan, how much of that payment goes to interest versus principal, and the total interest charged across the full term. You enter your loan amount, interest rate, term, and repayment frequency. The output gives you a clean repayment figure to plan around and a total cost number that most borrowers underestimate.
The estimate is based on the inputs you provide and assumes a standard principal and interest loan with a constant interest rate. Real loans vary as rates move and fees apply. Treat the output as a planning figure, not a loan offer.