Brandwave

BDO vs Forvis Mazars:Which is more popular?

In September 2026, Forvis Mazars had more branded searches than BDO among accounting firms worldwide. Forvis Mazars had about 226,000 branded searches, while BDO had 3,600. Forvis Mazars made up 4% of all accounting firm searches we track, and BDO accounted for 0.06%. When we asked ChatGPT and Google AI Overviews about accounting firms, BDO appeared in one of the three answers and Forvis Mazars in none.

Among accounting firms worldwide in September 2026

Who do people search for more?

Forvis Mazars, about 63 searches for every 1 for BDO

Forvis Mazars 226K searchesBDO 3.6K searches

Who does AI mention more?

BDO, mentioned in 1 of 3 answers, Forvis Mazars in 0

BDO in 1 of 3Forvis Mazars in 0 of 3

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Top accounting firms in ChatGPT and Google AI Overviews

In three ChatGPT questions, BDO was mentioned in one out of three: in one of the three ChatGPT answers. Forvis Mazars did not appear in any of the three answers.

Mentioned by AI

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

  • Deloitte1 of 3Named in 1 of 3 ChatGPT answers
  • KPMG1 of 3Named in 1 of 3 ChatGPT answers
  • PwC1 of 3Named in 1 of 3 ChatGPT answers
  • EY1 of 3Named in 1 of 3 ChatGPT answers
  • BDO1 of 3Named in 1 of 3 ChatGPT answers
  • Grant Thornton0 of 3Named in 0 of 3 ChatGPT answers
  • Forvis Mazars0 of 3Named in 0 of 3 ChatGPT answers
  • Baker Tilly0 of 3Named in 0 of 3 ChatGPT answers

See every answer about accounting firms

3 answers

  • Asked ChatGPT

    “Which accounting firm should I hire?”

    1. Asked ChatGPT

      “What are the best accounting firms?”

      1. 1Deloitte
      2. 2PwC
      3. 3EY
      4. 4KPMG
      5. 5BDO

    2. Asked ChatGPT

      “What's the best accounting firm for a small business?”

      1. Searched Google, AI Overview

        “accounting firms”

        Google showed no AI Overview for this search.

      2. Searched Google, AI Overview

        “small business accountant”

        Google showed no AI Overview for this search.

      Not named in any answer:

      Brands are shown in the order each answer named them. The survey took place in the United States on October 19, 2026.

      Is BDO or Forvis Mazars more popular in search?

      This chart shows how often people search Google for BDO and Forvis Mazars by name. Each line represents a brand's share of searches for all eight accounting firms we track, month by month, from English-language searches worldwide.

      BDO and Forvis Mazars among accounting firms worldwide, by month

      Share of searches by month for Forvis Mazars, BDO. The figures are in the table below the chart.

      View monthly share of searches table
      MonthDeloitteKPMGPwCEYGrant ThorntonForvis MazarsBaker TillyBDO
      Oct 202532.3%21.5%17.7%17.4%4.3%4.2%2.4%0.08%
      Nov 202534.2%18.7%18.7%17.9%4.6%3.9%2.1%0.07%
      Dec 202528.1%19%23.1%18.6%4.6%3.9%2.5%0.07%
      Jan 202629.7%19.8%19.8%19%4.9%4.1%2.7%0.07%
      Feb 202629.6%19.7%19.7%18.9%4.9%4.4%2.7%0.07%
      Mar 202629.7%19.8%19.8%19%4.9%4.1%2.7%0.07%
      Apr 202629.7%19.8%19.8%19%4.9%4.1%2.7%0.06%
      May 202631.5%21%17.3%20.1%4.2%3.6%2.3%0.06%
      Jun 202629.8%24.2%16.3%19%4%3.9%2.7%0.06%
      Jul 202632.3%21.5%17.7%17.4%5.3%3.4%2.4%0.06%
      Aug 202631.5%21%17.3%20.1%4.2%3.4%2.3%0.06%
      Sep 202632.6%21.7%17.8%17.1%4.4%4%2.4%0.06%

      How has the BDO and Forvis Mazars comparison changed over the last 12 months?

      3 findings
      • Forvis Mazars was ahead of BDO in every measured month of the 12 months ending September 2026.
      • Across the 12 months ending September 2026, BDO’s share of searches among accounting firms worldwide moved from 0.08% to 0.06%, and its estimated monthly branded searches moved from 4.4K to 3.6K.
      • Across the 12 months ending September 2026, Forvis Mazars’ share of searches among accounting firms worldwide moved from 4.2% to 4%, and its estimated monthly branded searches moved from 239K to 226K.

      How did search popularity change for accounting firms worldwide in September 2026?

      2 changes

      1. In September 2026, Forvis Mazars gained share of searches among accounting firms worldwide, from 3.4% to 4%.

      2. Estimated monthly branded searches for BDO worldwide fell 18.2% over 12 measured months, from 4.4K to 3.6K in September 2026.

      How are branded searches counted?

      3 search terms

      Brandwave collects information about searches that people make online using BDO’s and Forvis Mazars’ 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.

      BDO

      1 branded search term

      • bdo accountants

      Forvis Mazars

      2 branded search terms

      • forvis mazars
      • mazars

      How the Brand Demand Index is measured

      Other head-to-heads among accounting firms

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