Savings .com.au

Interest-only mortgage repayment calculator

Savings.com.au’s interest-only home loan calculator allows you to compare interest-only (IO) home loans with principal and interest (P&I) loans, seeing how much more you could pay in the long term despite reduced interest-only repayments in the short term.

To use our interest-only home loan calculator, enter:

  • The loan amount
  • The interest rate of the loan
  • The loan term (number of years of the entire loan) and the interest-only period (in years)
  • Any monthly fees

You can see the extra you will pay in total interest as well as compare repayments for both interest-only and principal and interest loans.

What is an interest-only mortgage?

Interest-only loans are home loans which delay the repayment of the borrowed amount (the ‘principal’) for a fixed term, usually three to five years. This means for a period, generally at the beginning of the loan, the borrowers only repay the interest component of their home loan, before it reverts to repaying both principal and interest.

Why switch to an interest-only home loan?

Interest-only home loans can be described as “less now, more later” as repayments for a few years will be significantly lower but can be considerably higher once the interest-only period ends. They’re particularly attractive to some investors who can buy property while maximising their cash flow and increase the tax-deduction capacity of their loans.

As an example of how interest-only loans can cost less up front but be more expensive later on, let’s look at a $400,000 home loan with a 4.00% p.a. interest rate over 30 years:

  • With a five-year IO period, monthly repayments would be $1,333 before reverting to $2,111 for the remaining 25 years
  • With a simple P&I loan, the monthly repayments remain constant at $1,910

The IO loan will cost the borrower $313,400 in total interest, while the P&I option will cost around $287,500 - a difference of nearly $30,000.

Learn more about the pros and cons of interest-only home loans.


Looking for a home loan?

Buying a home or looking to refinance? The table below features home loans
with some of the lowest interest rates on the market for owner occupiers.

Lender

Variable
More details
4.6 Star Customer Ratings
  • Low rates for purchase and refinancing
  • Simple online application process
  • No fees, unlimited redraws, 0.10% offset
Disclosure
4.6 Star Customer Ratings

loans.com.au – Variable Home Loan (LVR < 90%)

  • Low rates for purchase and refinancing
  • Simple online application process
  • No fees, unlimited redraws, 0.10% offset
Disclosure
Variable
More details
Apply in minutes
  • No application or ongoing fees. Annual rate discount
  • Unlimited redraws & additional repayments. LVR <80%
  • A low-rate variable home loan from a 100% online lender. Backed by the Commonwealth Bank.
Disclosure
Apply in minutes

Unloan – Variable Rate Home Loan LVR < 80%

  • No application or ongoing fees. Annual rate discount
  • Unlimited redraws & additional repayments. LVR <80%
  • A low-rate variable home loan from a 100% online lender. Backed by the Commonwealth Bank.
Disclosure
Variable
More details
  • No annual fees – None!
  • Get fast pre-approval
  • Unlimited additional repayments free of charge
  • Redraw freely – Access your additional payments when you need them
  • Home loan specialists available today
Disclosure

ubank, part of National Australia Bank – Neat home loan - max. 60% LVR (Owner occupied, Principal and interest)

  • No annual fees – None!
  • Get fast pre-approval
  • Unlimited additional repayments free of charge
  • Redraw freely – Access your additional payments when you need them
  • Home loan specialists available today
Disclosure
Fixed
More details
  • Available for purchase or refinance. 90% LVR
  • Fast turnaround times. Can meet 30-day settlement
  • No monthly or ongoing fees, split with low-rate variable loan
Disclosure

loans.com.au – Fixed Rate OO P&I (3 years)

  • Available for purchase or refinance. 90% LVR
  • Fast turnaround times. Can meet 30-day settlement
  • No monthly or ongoing fees, split with low-rate variable loan
Disclosure
Variable
More details
  • Make unlimited additional payments that you can redraw whenever you like
  • Skip the never-ending paperwork with a simple digital application
Disclosure

ubank, part of National Australia Bank – Neat home loan - max. 80% LVR (Owner occupied, Principal and interest)

  • Make unlimited additional payments that you can redraw whenever you like
  • Skip the never-ending paperwork with a simple digital application
Disclosure
Variable
More details
Disclosure

Westpac – Flexi First Option Home Loan (Promo) - Principal & Interest (LVR up to 70%)

    Disclosure
    Variable
    More details
    • You must drawdown the eligible home loan within 120 days of applying.
    Disclosure

    ANZ – Simplicity PLUS Home Loan (Principal and Interest) (LVR < 70%) (New Customer) Special offer

    • You must drawdown the eligible home loan within 120 days of applying.
    Disclosure
    Variable
    More details
    Disclosure

    NAB – Tailored Home Loan Variable Rate - Principal and Interest LVR 60% or less

      Disclosure
      Variable
      More details
      Disclosure

      Commonwealth Bank – Wealth Package Variable Home Loan (Principal and Interest) (LVR 80% - 90%)

        Disclosure
        Variable
        More details
        Disclosure

        loans.com.au – Solar Home Loan (Principal & Interest) (LVR < 90%)

          Disclosure
          Variable
          More details

          Heritage Bank – Discount Variable $700,000+ LVR<=70%

            Variable
            More details

            Gateway Bank – Green Plus Home Loans

              Variable
              More details

              Bank Australia – Clean Energy Home Loan Package Eco/Eco Upgrade LVR <90%

                Variable
                More details

                Up – Up Home Variable (Principal & Interest) (LVR < 90)

                  Variable
                  More details

                  Tiimely Home – Live-in Variable Loan Home Loan (Principal and Interest) (LVR < 90%)

                    Variable
                    More details

                    Bank of us – FlexiDiscount Variable Rate Loan Special <80% LVR

                      Variable
                      More details

                      HomeStar – Star Essentials Owner Occupied

                        Variable
                        More details

                        Horizon Bank – Home Sweet Home Loan LVR <= 70%

                          VariableN/AN/A
                          More details

                          BCU Bank – OMG! Home Loan - LVR of <=60%

                            VariableN/A
                            More details

                            Credit Union SA – Owner Occupied Variable Home Loan Package

                              Important Information and Comparison Rate Warning

                              Base criteria of: a $400,000 loan amount, variable, fixed, principal and interest (P&I) home loans with an LVR (loan-to-value) ratio of at least 80%. However, the ‘Compare Home Loans’ table allows for calculations to be made on variables as selected and input by the user. Some products will be marked as promoted, featured or sponsored and may appear prominently in the tables regardless of their attributes. All products will list the LVR with the product and rate which are clearly published on the product provider’s website. Monthly repayments, once the base criteria are altered by the user, will be based on the selected products’ advertised rates and determined by the loan amount, repayment type, loan term and LVR as input by the user/you. *The Comparison rate is based on a $150,000 loan over 25 years. Warning: this comparison rate is true only for this example and may not include all fees and charges. Different terms, fees or other loan amounts might result in a different comparison rate. Rates correct as of October 22, 2024. View disclaimer.

                              Important Information and Comparison Rate Warning