Brandwave

Great Southern Bank vs NAB:Which is more popular?

In September 2026, NAB had more branded searches than Great Southern Bank among banks in Australia. NAB had about 1 million branded searches, while Great Southern Bank had 135,000. NAB made up 15.3% of all bank searches we track, and Great Southern Bank accounted for 2%. When we asked ChatGPT and Google AI Overviews about banks, NAB appeared in three of the five answers and Great Southern Bank in one. NAB was mentioned before Great Southern Bank in every answer that named either.

Among banks in Australia in September 2026

Who do people search for more?

NAB, about 8 searches for every 1 for Great Southern Bank

NAB 1M searchesGreat Southern Bank 135K searches

Who does AI mention more?

NAB, mentioned in 3 of 5 answers, Great Southern Bank in 1

NAB in 3 of 5Great Southern Bank in 1 of 5

Who does AI recommend more?

NAB, named ahead of Great Southern Bank in 2 of 2 answers

NAB first in 2Great Southern Bank never first

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Top banks in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, NAB was mentioned in three out of five: in one of the three ChatGPT answers and in both Google AI Overviews. Great Southern Bank was mentioned in one out of five: not in any of the three ChatGPT answers, but in one of the two Google AI Overviews. NAB was listed before Great Southern Bank in every answer that named either.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. ING1st
  2. Macquarie Bank2nd
  3. CommBank3rd
  4. Up4th
  5. NAB5th
  6. Westpac6th
  7. ANZ7th
  8. ubank8th
  9. Bendigo Bank9th
  10. Great Southern Bank10th
  11. +5 more

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • CommBank4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Macquarie Bank4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • ING4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Westpac3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • NAB3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Up3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • ANZ2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Bendigo Bank2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • ubank2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Great Southern Bank1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers

+5 more

See every answer about banks

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in Australia on October 22, 2026.

Is Great Southern Bank or NAB more popular in search?

This chart shows how often people search Google for Great Southern Bank and NAB by name. Each line represents a brand's share of searches for all 15 banks we track, month by month, from searches in Australia.

Great Southern Bank and NAB among banks in Australia, by month

Share of searches by month for NAB, Great Southern Bank. The figures are in the table below the chart.

View monthly share of searches table
MonthCommBankANZWestpacNABSt.GeorgeBendigo BankBankwestMacquarie BankBOQGreat Southern BankSuncorp BankubankINGME BankUp
Oct 202526%17.6%17.6%15%5.3%4.3%2.9%2.9%2.9%1.6%1.1%0.87%0.73%1.1%0.39%
Nov 202524.1%18%18%15.4%5.4%4.4%3%3%3.3%1.6%1.1%0.73%0.67%0.89%0.4%
Dec 202525.2%18.9%18.9%13.2%5.7%4.6%2.5%2.5%3.1%1.7%1.1%0.76%0.54%0.93%0.34%
Jan 202625.4%19%19%13.3%5.7%3.8%2.5%2.5%3.1%1.7%0.94%0.94%0.64%0.94%0.42%
Feb 202626.4%16.1%19.8%13.8%5.9%4%2.7%2.7%2.6%1.8%1.2%0.98%0.66%0.98%0.44%
Mar 202624.2%18.2%18.2%15.5%5.4%4.5%3%2.4%3%2%1.1%0.9%0.61%0.73%0.4%
Apr 202621.9%19.9%19.9%13.9%6%4.9%2.7%2.7%3%1.8%0.98%0.8%0.55%0.66%0.36%
May 202621.6%19.7%19.7%13.8%5.9%4.8%2.6%3.2%3%1.8%1.2%0.97%0.66%0.65%0.43%
Jun 202622%20.1%20.1%14.1%6%4%2.7%2.7%3%1.8%0.99%0.99%0.55%0.54%0.36%
Jul 202622.3%20.3%20.3%14.2%5%4.1%2.7%2.7%3.1%1.8%1%0.82%0.58%0.55%0.37%
Aug 202624%16.1%19.8%16.7%4.9%4.9%2.7%2.7%3%1.8%0.98%0.98%0.66%0.53%0.44%
Sep 202624.1%17.8%17.8%15.3%5.4%4.4%2.9%2.9%2.9%2%1.3%1.1%0.87%0.59%0.48%

How has the Great Southern Bank and NAB comparison changed over the last 12 months?

3 findings
  • NAB was ahead of Great Southern Bank in every measured month of the 12 months ending September 2026.
  • Across the 12 months ending September 2026, Great Southern Bank’s share of searches among banks in Australia moved from 1.6% to 2%, and its estimated monthly branded searches held steady at 135K.
  • Across the 12 months ending September 2026, NAB’s share of searches among banks in Australia moved from 15% to 15.3%, and its estimated monthly branded searches moved from 1.3M to 1M.

How did search popularity change for Australia banks in September 2026?

2 changes

  1. In September 2026, ANZ overtook Westpac and NAB to rank 2nd among banks in Australia, with 17.8% of the searches.

  2. In September 2026, NAB lost share of searches among banks in Australia, from 16.7% to 15.3%.

How are branded searches counted?

3 search terms

Brandwave collects information about searches that people make online using Great Southern Bank’s and NAB’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.

Great Southern Bank

1 branded search term

  • great southern bank

NAB

2 branded search terms

  • nab
  • nab bank

How the Brand Demand Index is measured

Other head-to-heads among banks

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