CommBank vs NAB:Which is more popular?
In September 2026, CommBank had more branded searches than NAB among business bank accounts in Australia. CommBank had about 4,400 branded searches, while NAB had 2,900. CommBank made up 7.8% of all business bank account searches we track, and NAB accounted for 5.1%. When we asked ChatGPT and Google AI Overviews about business bank accounts, NAB appeared in all five answers and CommBank in three. NAB was mentioned before CommBank in four out of five answers.
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Top business bank accounts in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, NAB appeared in all five answers. CommBank was mentioned in three out of five: in two of the three ChatGPT answers and in one of the two Google AI Overviews. NAB was listed before CommBank in four out of five answers.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
NAB5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Westpac5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
CommBank3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
ANZ2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Airwallex1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Wise1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Judo Bank0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Revolut0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about business bank accounts
5 answers
Asked ChatGPT
“What's the best business bank account in Australia?”
Asked ChatGPT
“Which bank should I open a business account with?”
Asked ChatGPT
“Which business account has the lowest fees for a small business?”
Searched Google, AI Overview
“business bank account”
Searched Google, AI Overview
“business account”
Brands are shown in the order each answer named them. The survey took place in Australia on October 27, 2026.
Share of searches by month for CommBank, NAB. The figures are in the table below the chart.
View monthly share of searches table
| Month | Judo Bank | Airwallex | CommBank | NAB | Revolut | Westpac | ANZ | Wise |
|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 36.2% | 36.3% | 8.8% | 5.8% | 3.2% | 4.8% | 3.8% | 1.2% |
| Nov 2025 | 37.1% | 37.2% | 7.4% | 4.9% | 2.7% | 5.9% | 3.9% | 0.98% |
| Dec 2025 | 34.1% | 41.8% | 6.7% | 4.4% | 3% | 5.5% | 3.7% | 0.9% |
| Jan 2026 | 29% | 43.6% | 8.6% | 5.7% | 3.1% | 5.7% | 3.1% | 1.2% |
| Feb 2026 | 45.5% | 30.5% | 7.4% | 4.9% | 2.7% | 4.9% | 3.2% | 0.99% |
| Mar 2026 | 48.3% | 32.4% | 5.3% | 4.3% | 2.3% | 4.3% | 2.3% | 0.86% |
| Apr 2026 | 43.7% | 35.9% | 5.8% | 4.7% | 2.6% | 3.9% | 2.6% | 0.95% |
| May 2026 | 47.2% | 31.8% | 6.3% | 4.1% | 2.7% | 4.1% | 2.7% | 1% |
| Jun 2026 | 52.2% | 28.8% | 5.7% | 3.7% | 2.4% | 3.7% | 2.4% | 0.93% |
| Jul 2026 | 44.8% | 30.1% | 7.3% | 4.8% | 4% | 4.8% | 3.1% | 1.2% |
| Aug 2026 | 42.1% | 34.7% | 5.6% | 4.5% | 4.5% | 4.5% | 3% | 1.1% |
| Sep 2026 | 39.2% | 32.1% | 7.8% | 5.1% | 5.1% | 5.1% | 4.2% | 1.3% |
CommBank and NAB sell other things too, so only their searches that name this product count here, like “commbank business account”.
How has the CommBank and NAB comparison changed over the last 12 months?
3 findings
- CommBank was ahead of NAB in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, CommBank’s share of searches among business bank accounts in Australia moved from 8.8% to 7.8%, and its estimated monthly branded searches held steady at 4.4K.
- Across the 12 months ending September 2026, NAB’s share of searches among business bank accounts in Australia moved from 5.8% to 5.1%, and its estimated monthly branded searches held steady at 2.9K.
How did search popularity change for Australia business bank accounts in September 2026?
2 changes
In September 2026, CommBank gained share of searches among business bank accounts in Australia, from 5.6% to 7.8%.
In September 2026, NAB gained share of searches among business bank accounts in Australia, from 4.5% to 5.1%.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using CommBank’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.
Other head-to-heads among business bank accounts
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