CommBank, NAB, Westpac or ANZ – how do the Big Four savings accounts stack up?

By Peter Terlato · · 3 min read
Fact Checked
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Big Four banks Australia logos

Household budgets remain tight with cost of living pressures still at the fore. The RBA kept the cash rate on hold at 3.60% in November and economists now predict that further cuts won't come into play until mid 2026. This means being aware of the best savings rates is important. 

While the Big Four dominate the market, they typically don't offer the highest rates available.

Discover the best high interest savings rates

How do the big four savings accounts compare?

The Big Four banks all offer savings account interest rates above the current cash rate of 3.60%.

However, these rates aren't as high as some other major banks and smaller providers. For instance, Rabobank’s High Interest Savings Account at 5.00% p.a. (for the first 4 months, reverting to 3.45% p.a.) easily outpaces the leading Big Four rate.

Best savings rates offered by the Big Four – November 2025

  • CBA NetBank Saver – 4.45% p.a. (introductory rate, reverts to standard 1.55% p.a. rate after 5 months)
  • NAB iSaver – 4.45% p.a. (introductory rate, reverts to standard 1.25% rate after 4 months)
  • ANZ Plus Growth Saver – 4.15% p.a. (bonus rate, ongoing if monthly conditions are met)
  • Westpac Life  – 4.25% p.a. (bonus rate, ongoing if monthly conditions are met)

It's worth noting that high interest savings rates often require customers to meet specific conditions in order to receive the full advertised rate. Common requirements include:

  • Monthly deposit minimums
  • Limited or no withdrawals
  • Maintaining minimum balances
  • Age restrictions for youth or senior accounts
  • New customer bonuses that expire after an introductory period.

What conditions do the Big Four impose?

Keep in mind that most of these high interest savings products are bonus saver accounts, with strings attached. To receive the bonus rate, you'll usually need to meet some eligibility criteria – such as maintaining a minimum balance and avoiding withdrawals. If you fail any of the requirements each month, you may receive a lower standard rate and earn far less interest.

Below you'll find a comprehensive breakdown of the requirements and conditions you must meet to qualify for the top rates offered by Westpac, CommBank, NAB and ANZ.

Feature CBA NetBank Saver NAB iSaver ANZ Plus Growth Saver Westpac Life Goal
Max rate
 4.45% p.a.
 4.45% p.a.
 4.15% p.a.
 4.25% p.a.
Standard rate
 1.55% p.a.
 1.25% p.a.
 0.05% p.a.
 0.40% p.a.
Monthly account fees None None None None
Linked transaction account
 Required
 Required
 Required
 Required
Monthly balance growth
 Not required
 Not required
 Required, by at least $100
 Required, by at least $0.01
Minimum number of transactions Not required Not required Not required Not required
Withdrawals Permitted Permitted Permitted Permitted

How do the Big Four compare to smaller providers?

Many people stick with one bank for everything, but this could mean missing out leading rates. 

Shopping around for savings accounts can really boost your stash and it’s good practice to compare different providers against your current account. Plus, most savings accounts nowadays can be opened and operated online. This means you can shuffle money between accounts and set up new ones without ever having to visit a branch.

Below is a breakdown of the leading savings accounts on Mozo's database – conditions apply.

Best savings rates in Mozo's database – November 2025

  • ubank Save – 5.10% p.a. (bonus rate, ongoing if monthly conditions are met)
  • Rabobank HISA – 5.00% p.a. (introductory rate, reverts to standard 3.45% p.a. rate after 4 months)
  • ING Savings Maximiser – 4.80% p.a. (bonus rate, ongoing if monthly conditions are met)
  • Bankwest Easy Saver – 4.80% p.a. (introductory rate, reverts to standard 4.00% p.a. rate after 4 months)
  • MOVE Bank Growth Saver – 4.75% p.a. (bonus rate, ongoing if monthly conditions are met)

Want to know how the Big Four compare to other savings accounts? Check out the table below for more options, or head over to our savings account comparison page for more information.

Mozo may receive payment if you click products on our site. We don’t compare the entire market, but you can search our database of 255 savings accounts using the filters.
Last updated 5 December 2025 Important disclosures
  • Promoted

    Boss Saver

    Maximum rate
    4.65 % p.a.
    (for $0 to $100,001)
    Minimum $500 deposited into linked transaction account, and 5 Visa Card transactions from that account
    Standard rate
    0.20 % p.a.
    (for $0 and over)
    Go to site
    • Ongoing bonus interest when you meet conditions
    • No minimum balance, ongoing fees or withdrawal penalties
    • Manage your money easily on the BCU Bank app
  • Promoted

    AMP Bank GO Save

    Maximum rate
    4.25 % p.a.
    (for $0 to $250,001)
    Standard rate
    4.25 % p.a.
    (for $0 to $250,001)
    Go to site
    • No deposit or withdrawal conditions
    • No minimum balance or monthly account fees
    • All you need is an AMP Bank GO Everyday Account to open a Save account in the AMP Bank GO app.
  • Promoted

    Reward Saver Account

    Maximum rate
    4.50 % p.a.
    (for $0 to $1,000,000)
    Intro bonus rate of 4.50% for balances up to $1,000,000 for the first 4 months, reverting to 2.50%. Minimum deposit of $50 and no withdrawals.
    Standard rate
    0.00 % p.a.
    (for $0 and over)
    Go to site
    • Earn bonus rate by depositing $50 a month and making no withdrawals
    • Introductory rate for first 4 months
    • No monthly account fees

  • High Interest Savings Account

    Maximum rate
    5.00 % p.a.
    (for $0 to $250,001)
    Bonus rate for the first 4 months from account opening
    Standard rate
    3.45 % p.a.
    (for $0 to $250,001)
    Go to site
    • Easy set up, online and mobile banking app
    • No fees, no minimum balance, no minimum monthly deposit and no minimum term
    • Kick start your savings with the 4 month introductory variable rate

  • Reward Saver Kick Start Account - Up to 30 years old

    Maximum rate
    4.75 % p.a.
    (for $5,000 to $100,000)
    Minimum deposit of $20 and no withdrawals in the month.
    Standard rate
    0.00 % p.a.
    (for $0 and over)
    Go to site
    • Earn bonus rates by depositing $20 a month and making no withdrawals
    • Mozo Experts Choice Awards winner for Teen High Interest Savings in 2025
    • No monthly account fees

  • Boss Saver

    Maximum rate
    4.65 % p.a.
    (for $0 to $100,001)
    Minimum $500 deposited into linked transaction account, and 5 Visa Card transactions from that account
    Standard rate
    0.20 % p.a.
    (for $0 and over)
    Go to site
    • Ongoing bonus interest when you meet conditions
    • No minimum balance, ongoing fees or withdrawal penalties
    • Manage your money easily on the BCU Bank app

  • Savvy Saver Account

    Maximum rate
    4.65 % p.a.
    (for $0 to $100,001)
    Minimum $500 deposited into linked transaction account, and 5 Visa Card transactions from that account
    Standard rate
    0.20 % p.a.
    (for $0 and over)
    Go to site
    • No minimum balance required
    • Move money in and out and still earn interest
    • Transfer or make payments using the mobile app

  • Reward Saver Account

    Maximum rate
    4.50 % p.a.
    (for $0 to $1,000,000)
    Intro bonus rate of 4.50% for balances up to $1,000,000 for the first 4 months, reverting to 2.50%. Minimum deposit of $50 and no withdrawals.
    Standard rate
    0.00 % p.a.
    (for $0 and over)
    Go to site
    • Earn bonus rate by depositing $50 a month and making no withdrawals
    • Introductory rate for first 4 months
    • No monthly account fees

  • Smart Saver Account

    Maximum rate
    4.45 % p.a.
    (for $0 to $250,000)
    Minimum deposit of $100 and no withdrawals in the month
    Standard rate
    0.50 % p.a.
    (for $0 and over)
    Go to site
    • Earn bonus interest each month (T&Cs apply)
    • Open up to five accounts
    • No monthly fees or minimum balance

  • Power Saver

    Maximum rate
    4.35 % p.a.
    (for $0 to $250,000)
    Minimum of $100 deposited into account, and no withdrawals made.
    Standard rate
    0.50 % p.a.
    (for $0 and over)
    Go to site
    • Bonus interest for the first four months
    • No minimum balance, ongoing fees or withdrawal penalties
    • Manage your money easily on the BCU Bank app

  • AMP Bank GO Save

    Maximum rate
    4.25 % p.a.
    (for $0 to $250,001)
    Standard rate
    4.25 % p.a.
    (for $0 to $250,001)
    Go to site
    • No deposit or withdrawal conditions
    • No minimum balance or monthly account fees
    • All you need is an AMP Bank GO Everyday Account to open a Save account in the AMP Bank GO app.

  • Savings+Bonus

    Maximum rate
    4.25 % p.a.
    (for $1 to $250,000)
    Minimum $100 monthly deposit and no withdrawals to earn bonus interest each month.
    Standard rate
    1.75 % p.a.
    (for $1 to $250,000)
    Go to site
    • Enjoy bonus interest when you meet criteria
    • Access your money at any time via app
    • $250K maximum balance

  • Bonus Saver

    Maximum rate
    4.25 % p.a.
    (for $0 and over)
    Standard rate
    0.05 % p.a.
    (for $0 and over)
    Go to site
    • Bonus interest for the first four months
    • No minimum balance, ongoing fees or withdrawal penalties
    • Manage your money easily on the BCU Bank app

  • Hi Saver

    Maximum rate
    4.25 % p.a.
    (for $0 and over)
    Bonus rate for the first 4 months from account opening
    Standard rate
    0.05 % p.a.
    (for $0 and over)
    Go to site
    • Earn bonus interest for the first four months
    • No Minimum balance required
    • Transfer or make payments using the mobile app
Showing 11 results from 255 savings accounts. Use the filters to see more

^See information about the Mozo Experts Choice Savings Account Awards

Mozo provides general product information. We don't consider your personal objectives, financial situation or needs and we aren't recommending any specific product to you. You should make your own decision after reading the PDS or offer documentation, or seeking independent advice.

While we pride ourselves on covering a wide range of products, we don't cover every product in the market. If you decide to apply for a product through our website, you will be dealing directly with the provider of that product and not with Mozo.

Today's savings account rates